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authorblogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-10-05 10:12:53 +0000
committerblogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-10-05 10:12:53 +0000
commit5c105d9f3fd086aff195d3849dcf847d6b0bd927 (patch)
tree1229a11f725bfa58aa7c57a76898553bb5f6654a /package/px5g/src/library
downloadopenwrt-5c105d9f3fd086aff195d3849dcf847d6b0bd927.tar.gz
openwrt-5c105d9f3fd086aff195d3849dcf847d6b0bd927.zip
branch Attitude Adjustment
git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33625 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/px5g/src/library')
-rw-r--r--package/px5g/src/library/base64.c264
-rw-r--r--package/px5g/src/library/bignum.c2010
-rw-r--r--package/px5g/src/library/havege.c276
-rw-r--r--package/px5g/src/library/rsa.c750
-rw-r--r--package/px5g/src/library/sha1.c622
-rw-r--r--package/px5g/src/library/timing.c265
-rw-r--r--package/px5g/src/library/x509write.c1139
7 files changed, 5326 insertions, 0 deletions
diff --git a/package/px5g/src/library/base64.c b/package/px5g/src/library/base64.c
new file mode 100644
index 000000000..b7cc5b84e
--- /dev/null
+++ b/package/px5g/src/library/base64.c
@@ -0,0 +1,264 @@
+/*
+ * RFC 1521 base64 encoding/decoding
+ *
+ * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
+ *
+ * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the names of PolarSSL or XySSL nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "polarssl/config.h"
+
+#if defined(POLARSSL_BASE64_C)
+
+#include "polarssl/base64.h"
+
+static const unsigned char base64_enc_map[64] =
+{
+ 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
+ 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
+ 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
+ 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
+ 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x',
+ 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7',
+ '8', '9', '+', '/'
+};
+
+static const unsigned char base64_dec_map[128] =
+{
+ 127, 127, 127, 127, 127, 127, 127, 127, 127, 127,
+ 127, 127, 127, 127, 127, 127, 127, 127, 127, 127,
+ 127, 127, 127, 127, 127, 127, 127, 127, 127, 127,
+ 127, 127, 127, 127, 127, 127, 127, 127, 127, 127,
+ 127, 127, 127, 62, 127, 127, 127, 63, 52, 53,
+ 54, 55, 56, 57, 58, 59, 60, 61, 127, 127,
+ 127, 64, 127, 127, 127, 0, 1, 2, 3, 4,
+ 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
+ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
+ 25, 127, 127, 127, 127, 127, 127, 26, 27, 28,
+ 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
+ 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
+ 49, 50, 51, 127, 127, 127, 127, 127
+};
+
+/*
+ * Encode a buffer into base64 format
+ */
+int base64_encode( unsigned char *dst, int *dlen,
+ unsigned char *src, int slen )
+{
+ int i, n;
+ int C1, C2, C3;
+ unsigned char *p;
+
+ if( slen == 0 )
+ return( 0 );
+
+ n = (slen << 3) / 6;
+
+ switch( (slen << 3) - (n * 6) )
+ {
+ case 2: n += 3; break;
+ case 4: n += 2; break;
+ default: break;
+ }
+
+ if( *dlen < n + 1 )
+ {
+ *dlen = n + 1;
+ return( POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL );
+ }
+
+ n = (slen / 3) * 3;
+
+ for( i = 0, p = dst; i < n; i += 3 )
+ {
+ C1 = *src++;
+ C2 = *src++;
+ C3 = *src++;
+
+ *p++ = base64_enc_map[(C1 >> 2) & 0x3F];
+ *p++ = base64_enc_map[(((C1 & 3) << 4) + (C2 >> 4)) & 0x3F];
+ *p++ = base64_enc_map[(((C2 & 15) << 2) + (C3 >> 6)) & 0x3F];
+ *p++ = base64_enc_map[C3 & 0x3F];
+ }
+
+ if( i < slen )
+ {
+ C1 = *src++;
+ C2 = ((i + 1) < slen) ? *src++ : 0;
+
+ *p++ = base64_enc_map[(C1 >> 2) & 0x3F];
+ *p++ = base64_enc_map[(((C1 & 3) << 4) + (C2 >> 4)) & 0x3F];
+
+ if( (i + 1) < slen )
+ *p++ = base64_enc_map[((C2 & 15) << 2) & 0x3F];
+ else *p++ = '=';
+
+ *p++ = '=';
+ }
+
+ *dlen = p - dst;
+ *p = 0;
+
+ return( 0 );
+}
+
+/*
+ * Decode a base64-formatted buffer
+ */
+int base64_decode( unsigned char *dst, int *dlen,
+ unsigned char *src, int slen )
+{
+ int i, j, n;
+ unsigned long x;
+ unsigned char *p;
+
+ for( i = j = n = 0; i < slen; i++ )
+ {
+ if( ( slen - i ) >= 2 &&
+ src[i] == '\r' && src[i + 1] == '\n' )
+ continue;
+
+ if( src[i] == '\n' )
+ continue;
+
+ if( src[i] == '=' && ++j > 2 )
+ return( POLARSSL_ERR_BASE64_INVALID_CHARACTER );
+
+ if( src[i] > 127 || base64_dec_map[src[i]] == 127 )
+ return( POLARSSL_ERR_BASE64_INVALID_CHARACTER );
+
+ if( base64_dec_map[src[i]] < 64 && j != 0 )
+ return( POLARSSL_ERR_BASE64_INVALID_CHARACTER );
+
+ n++;
+ }
+
+ if( n == 0 )
+ return( 0 );
+
+ n = ((n * 6) + 7) >> 3;
+
+ if( *dlen < n )
+ {
+ *dlen = n;
+ return( POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL );
+ }
+
+ for( j = 3, n = x = 0, p = dst; i > 0; i--, src++ )
+ {
+ if( *src == '\r' || *src == '\n' )
+ continue;
+
+ j -= ( base64_dec_map[*src] == 64 );
+ x = (x << 6) | ( base64_dec_map[*src] & 0x3F );
+
+ if( ++n == 4 )
+ {
+ n = 0;
+ if( j > 0 ) *p++ = (unsigned char)( x >> 16 );
+ if( j > 1 ) *p++ = (unsigned char)( x >> 8 );
+ if( j > 2 ) *p++ = (unsigned char)( x );
+ }
+ }
+
+ *dlen = p - dst;
+
+ return( 0 );
+}
+
+#if defined(POLARSSL_SELF_TEST)
+
+#include <string.h>
+#include <stdio.h>
+
+static const unsigned char base64_test_dec[64] =
+{
+ 0x24, 0x48, 0x6E, 0x56, 0x87, 0x62, 0x5A, 0xBD,
+ 0xBF, 0x17, 0xD9, 0xA2, 0xC4, 0x17, 0x1A, 0x01,
+ 0x94, 0xED, 0x8F, 0x1E, 0x11, 0xB3, 0xD7, 0x09,
+ 0x0C, 0xB6, 0xE9, 0x10, 0x6F, 0x22, 0xEE, 0x13,
+ 0xCA, 0xB3, 0x07, 0x05, 0x76, 0xC9, 0xFA, 0x31,
+ 0x6C, 0x08, 0x34, 0xFF, 0x8D, 0xC2, 0x6C, 0x38,
+ 0x00, 0x43, 0xE9, 0x54, 0x97, 0xAF, 0x50, 0x4B,
+ 0xD1, 0x41, 0xBA, 0x95, 0x31, 0x5A, 0x0B, 0x97
+};
+
+static const unsigned char base64_test_enc[] =
+ "JEhuVodiWr2/F9mixBcaAZTtjx4Rs9cJDLbpEG8i7hPK"
+ "swcFdsn6MWwINP+Nwmw4AEPpVJevUEvRQbqVMVoLlw==";
+
+/*
+ * Checkup routine
+ */
+int base64_self_test( int verbose )
+{
+ int len;
+ unsigned char *src, buffer[128];
+
+ if( verbose != 0 )
+ printf( " Base64 encoding test: " );
+
+ len = sizeof( buffer );
+ src = (unsigned char *) base64_test_dec;
+
+ if( base64_encode( buffer, &len, src, 64 ) != 0 ||
+ memcmp( base64_test_enc, buffer, 88 ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n Base64 decoding test: " );
+
+ len = sizeof( buffer );
+ src = (unsigned char *) base64_test_enc;
+
+ if( base64_decode( buffer, &len, src, 88 ) != 0 ||
+ memcmp( base64_test_dec, buffer, 64 ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n\n" );
+
+ return( 0 );
+}
+
+#endif
+
+#endif
diff --git a/package/px5g/src/library/bignum.c b/package/px5g/src/library/bignum.c
new file mode 100644
index 000000000..8b7c12ff0
--- /dev/null
+++ b/package/px5g/src/library/bignum.c
@@ -0,0 +1,2010 @@
+/*
+ * Multi-precision integer library
+ *
+ * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
+ *
+ * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the names of PolarSSL or XySSL nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/*
+ * This MPI implementation is based on:
+ *
+ * http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf
+ * http://www.stillhq.com/extracted/gnupg-api/mpi/
+ * http://math.libtomcrypt.com/files/tommath.pdf
+ */
+
+#include "polarssl/config.h"
+
+#if defined(POLARSSL_BIGNUM_C)
+
+#include "polarssl/bignum.h"
+#include "polarssl/bn_mul.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#define ciL ((int) sizeof(t_int)) /* chars in limb */
+#define biL (ciL << 3) /* bits in limb */
+#define biH (ciL << 2) /* half limb size */
+
+/*
+ * Convert between bits/chars and number of limbs
+ */
+#define BITS_TO_LIMBS(i) (((i) + biL - 1) / biL)
+#define CHARS_TO_LIMBS(i) (((i) + ciL - 1) / ciL)
+
+/*
+ * Initialize one or more mpi
+ */
+void mpi_init( mpi *X, ... )
+{
+ va_list args;
+
+ va_start( args, X );
+
+ while( X != NULL )
+ {
+ X->s = 1;
+ X->n = 0;
+ X->p = NULL;
+
+ X = va_arg( args, mpi* );
+ }
+
+ va_end( args );
+}
+
+/*
+ * Unallocate one or more mpi
+ */
+void mpi_free( mpi *X, ... )
+{
+ va_list args;
+
+ va_start( args, X );
+
+ while( X != NULL )
+ {
+ if( X->p != NULL )
+ {
+ memset( X->p, 0, X->n * ciL );
+ free( X->p );
+ }
+
+ X->s = 1;
+ X->n = 0;
+ X->p = NULL;
+
+ X = va_arg( args, mpi* );
+ }
+
+ va_end( args );
+}
+
+/*
+ * Enlarge to the specified number of limbs
+ */
+int mpi_grow( mpi *X, int nblimbs )
+{
+ t_int *p;
+
+ if( X->n < nblimbs )
+ {
+ if( ( p = (t_int *) malloc( nblimbs * ciL ) ) == NULL )
+ return( 1 );
+
+ memset( p, 0, nblimbs * ciL );
+
+ if( X->p != NULL )
+ {
+ memcpy( p, X->p, X->n * ciL );
+ memset( X->p, 0, X->n * ciL );
+ free( X->p );
+ }
+
+ X->n = nblimbs;
+ X->p = p;
+ }
+
+ return( 0 );
+}
+
+/*
+ * Copy the contents of Y into X
+ */
+int mpi_copy( mpi *X, mpi *Y )
+{
+ int ret, i;
+
+ if( X == Y )
+ return( 0 );
+
+ for( i = Y->n - 1; i > 0; i-- )
+ if( Y->p[i] != 0 )
+ break;
+ i++;
+
+ X->s = Y->s;
+
+ MPI_CHK( mpi_grow( X, i ) );
+
+ memset( X->p, 0, X->n * ciL );
+ memcpy( X->p, Y->p, i * ciL );
+
+cleanup:
+
+ return( ret );
+}
+
+/*
+ * Swap the contents of X and Y
+ */
+void mpi_swap( mpi *X, mpi *Y )
+{
+ mpi T;
+
+ memcpy( &T, X, sizeof( mpi ) );
+ memcpy( X, Y, sizeof( mpi ) );
+ memcpy( Y, &T, sizeof( mpi ) );
+}
+
+/*
+ * Set value from integer
+ */
+int mpi_lset( mpi *X, int z )
+{
+ int ret;
+
+ MPI_CHK( mpi_grow( X, 1 ) );
+ memset( X->p, 0, X->n * ciL );
+
+ X->p[0] = ( z < 0 ) ? -z : z;
+ X->s = ( z < 0 ) ? -1 : 1;
+
+cleanup:
+
+ return( ret );
+}
+
+/*
+ * Return the number of least significant bits
+ */
+int mpi_lsb( mpi *X )
+{
+ int i, j, count = 0;
+
+ for( i = 0; i < X->n; i++ )
+ for( j = 0; j < (int) biL; j++, count++ )
+ if( ( ( X->p[i] >> j ) & 1 ) != 0 )
+ return( count );
+
+ return( 0 );
+}
+
+/*
+ * Return the number of most significant bits
+ */
+int mpi_msb( mpi *X )
+{
+ int i, j;
+
+ for( i = X->n - 1; i > 0; i-- )
+ if( X->p[i] != 0 )
+ break;
+
+ for( j = biL - 1; j >= 0; j-- )
+ if( ( ( X->p[i] >> j ) & 1 ) != 0 )
+ break;
+
+ return( ( i * biL ) + j + 1 );
+}
+
+/*
+ * Return the total size in bytes
+ */
+int mpi_size( mpi *X )
+{
+ return( ( mpi_msb( X ) + 7 ) >> 3 );
+}
+
+/*
+ * Convert an ASCII character to digit value
+ */
+static int mpi_get_digit( t_int *d, int radix, char c )
+{
+ *d = 255;
+
+ if( c >= 0x30 && c <= 0x39 ) *d = c - 0x30;
+ if( c >= 0x41 && c <= 0x46 ) *d = c - 0x37;
+ if( c >= 0x61 && c <= 0x66 ) *d = c - 0x57;
+
+ if( *d >= (t_int) radix )
+ return( POLARSSL_ERR_MPI_INVALID_CHARACTER );
+
+ return( 0 );
+}
+
+/*
+ * Import from an ASCII string
+ */
+int mpi_read_string( mpi *X, int radix, char *s )
+{
+ int ret, i, j, n;
+ t_int d;
+ mpi T;
+
+ if( radix < 2 || radix > 16 )
+ return( POLARSSL_ERR_MPI_BAD_INPUT_DATA );
+
+ mpi_init( &T, NULL );
+
+ if( radix == 16 )
+ {
+ n = BITS_TO_LIMBS( strlen( s ) << 2 );
+
+ MPI_CHK( mpi_grow( X, n ) );
+ MPI_CHK( mpi_lset( X, 0 ) );
+
+ for( i = strlen( s ) - 1, j = 0; i >= 0; i--, j++ )
+ {
+ if( i == 0 && s[i] == '-' )
+ {
+ X->s = -1;
+ break;
+ }
+
+ MPI_CHK( mpi_get_digit( &d, radix, s[i] ) );
+ X->p[j / (2 * ciL)] |= d << ( (j % (2 * ciL)) << 2 );
+ }
+ }
+ else
+ {
+ MPI_CHK( mpi_lset( X, 0 ) );
+
+ for( i = 0; i < (int) strlen( s ); i++ )
+ {
+ if( i == 0 && s[i] == '-' )
+ {
+ X->s = -1;
+ continue;
+ }
+
+ MPI_CHK( mpi_get_digit( &d, radix, s[i] ) );
+ MPI_CHK( mpi_mul_int( &T, X, radix ) );
+ MPI_CHK( mpi_add_int( X, &T, d ) );
+ }
+ }
+
+cleanup:
+
+ mpi_free( &T, NULL );
+
+ return( ret );
+}
+
+/*
+ * Helper to write the digits high-order first
+ */
+static int mpi_write_hlp( mpi *X, int radix, char **p )
+{
+ int ret;
+ t_int r;
+
+ if( radix < 2 || radix > 16 )
+ return( POLARSSL_ERR_MPI_BAD_INPUT_DATA );
+
+ MPI_CHK( mpi_mod_int( &r, X, radix ) );
+ MPI_CHK( mpi_div_int( X, NULL, X, radix ) );
+
+ if( mpi_cmp_int( X, 0 ) != 0 )
+ MPI_CHK( mpi_write_hlp( X, radix, p ) );
+
+ if( r < 10 )
+ *(*p)++ = (char)( r + 0x30 );
+ else
+ *(*p)++ = (char)( r + 0x37 );
+
+cleanup:
+
+ return( ret );
+}
+
+/*
+ * Export into an ASCII string
+ */
+int mpi_write_string( mpi *X, int radix, char *s, int *slen )
+{
+ int ret = 0, n;
+ char *p;
+ mpi T;
+
+ if( radix < 2 || radix > 16 )
+ return( POLARSSL_ERR_MPI_BAD_INPUT_DATA );
+
+ n = mpi_msb( X );
+ if( radix >= 4 ) n >>= 1;
+ if( radix >= 16 ) n >>= 1;
+ n += 3;
+
+ if( *slen < n )
+ {
+ *slen = n;
+ return( POLARSSL_ERR_MPI_BUFFER_TOO_SMALL );
+ }
+
+ p = s;
+ mpi_init( &T, NULL );
+
+ if( X->s == -1 )
+ *p++ = '-';
+
+ if( radix == 16 )
+ {
+ int c, i, j, k;
+
+ for( i = X->n - 1, k = 0; i >= 0; i-- )
+ {
+ for( j = ciL - 1; j >= 0; j-- )
+ {
+ c = ( X->p[i] >> (j << 3) ) & 0xFF;
+
+ if( c == 0 && k == 0 && (i + j) != 0 )
+ continue;
+
+ p += sprintf( p, "%02X", c );
+ k = 1;
+ }
+ }
+ }
+ else
+ {
+ MPI_CHK( mpi_copy( &T, X ) );
+ MPI_CHK( mpi_write_hlp( &T, radix, &p ) );
+ }
+
+ *p++ = '\0';
+ *slen = p - s;
+
+cleanup:
+
+ mpi_free( &T, NULL );
+
+ return( ret );
+}
+
+/*
+ * Read X from an opened file
+ */
+int mpi_read_file( mpi *X, int radix, FILE *fin )
+{
+ t_int d;
+ int slen;
+ char *p;
+ char s[1024];
+
+ memset( s, 0, sizeof( s ) );
+ if( fgets( s, sizeof( s ) - 1, fin ) == NULL )
+ return( POLARSSL_ERR_MPI_FILE_IO_ERROR );
+
+ slen = strlen( s );
+ if( s[slen - 1] == '\n' ) { slen--; s[slen] = '\0'; }
+ if( s[slen - 1] == '\r' ) { slen--; s[slen] = '\0'; }
+
+ p = s + slen;
+ while( --p >= s )
+ if( mpi_get_digit( &d, radix, *p ) != 0 )
+ break;
+
+ return( mpi_read_string( X, radix, p + 1 ) );
+}
+
+/*
+ * Write X into an opened file (or stdout if fout == NULL)
+ */
+int mpi_write_file( char *p, mpi *X, int radix, FILE *fout )
+{
+ int n, ret;
+ size_t slen;
+ size_t plen;
+ char s[1024];
+
+ n = sizeof( s );
+ memset( s, 0, n );
+ n -= 2;
+
+ MPI_CHK( mpi_write_string( X, radix, s, (int *) &n ) );
+
+ if( p == NULL ) p = "";
+
+ plen = strlen( p );
+ slen = strlen( s );
+ s[slen++] = '\r';
+ s[slen++] = '\n';
+
+ if( fout != NULL )
+ {
+ if( fwrite( p, 1, plen, fout ) != plen ||
+ fwrite( s, 1, slen, fout ) != slen )
+ return( POLARSSL_ERR_MPI_FILE_IO_ERROR );
+ }
+ else
+ printf( "%s%s", p, s );
+
+cleanup:
+
+ return( ret );
+}
+
+/*
+ * Import X from unsigned binary data, big endian
+ */
+int mpi_read_binary( mpi *X, unsigned char *buf, int buflen )
+{
+ int ret, i, j, n;
+
+ for( n = 0; n < buflen; n++ )
+ if( buf[n] != 0 )
+ break;
+
+ MPI_CHK( mpi_grow( X, CHARS_TO_LIMBS( buflen - n ) ) );
+ MPI_CHK( mpi_lset( X, 0 ) );
+
+ for( i = buflen - 1, j = 0; i >= n; i--, j++ )
+ X->p[j / ciL] |= ((t_int) buf[i]) << ((j % ciL) << 3);
+
+cleanup:
+
+ return( ret );
+}
+
+/*
+ * Export X into unsigned binary data, big endian
+ */
+int mpi_write_binary( mpi *X, unsigned char *buf, int buflen )
+{
+ int i, j, n;
+
+ n = mpi_size( X );
+
+ if( buflen < n )
+ return( POLARSSL_ERR_MPI_BUFFER_TOO_SMALL );
+
+ memset( buf, 0, buflen );
+
+ for( i = buflen - 1, j = 0; n > 0; i--, j++, n-- )
+ buf[i] = (unsigned char)( X->p[j / ciL] >> ((j % ciL) << 3) );
+
+ return( 0 );
+}
+
+/*
+ * Left-shift: X <<= count
+ */
+int mpi_shift_l( mpi *X, int count )
+{
+ int ret, i, v0, t1;
+ t_int r0 = 0, r1;
+
+ v0 = count / (biL );
+ t1 = count & (biL - 1);
+
+ i = mpi_msb( X ) + count;
+
+ if( X->n * (int) biL < i )
+ MPI_CHK( mpi_grow( X, BITS_TO_LIMBS( i ) ) );
+
+ ret = 0;
+
+ /*
+ * shift by count / limb_size
+ */
+ if( v0 > 0 )
+ {
+ for( i = X->n - 1; i >= v0; i-- )
+ X->p[i] = X->p[i - v0];
+
+ for( ; i >= 0; i-- )
+ X->p[i] = 0;
+ }
+
+ /*
+ * shift by count % limb_size
+ */
+ if( t1 > 0 )
+ {
+ for( i = v0; i < X->n; i++ )
+ {
+ r1 = X->p[i] >> (biL - t1);
+ X->p[i] <<= t1;
+ X->p[i] |= r0;
+ r0 = r1;
+ }
+ }
+
+cleanup:
+
+ return( ret );
+}
+
+/*
+ * Right-shift: X >>= count
+ */
+int mpi_shift_r( mpi *X, int count )
+{
+ int i, v0, v1;
+ t_int r0 = 0, r1;
+
+ v0 = count / biL;
+ v1 = count & (biL - 1);
+
+ /*
+ * shift by count / limb_size
+ */
+ if( v0 > 0 )
+ {
+ for( i = 0; i < X->n - v0; i++ )
+ X->p[i] = X->p[i + v0];
+
+ for( ; i < X->n; i++ )
+ X->p[i] = 0;
+ }
+
+ /*
+ * shift by count % limb_size
+ */
+ if( v1 > 0 )
+ {
+ for( i = X->n - 1; i >= 0; i-- )
+ {
+ r1 = X->p[i] << (biL - v1);
+ X->p[i] >>= v1;
+ X->p[i] |= r0;
+ r0 = r1;
+ }
+ }
+
+ return( 0 );
+}
+
+/*
+ * Compare unsigned values
+ */
+int mpi_cmp_abs( mpi *X, mpi *Y )
+{
+ int i, j;
+
+ for( i = X->n - 1; i >= 0; i-- )
+ if( X->p[i] != 0 )
+ break;
+
+ for( j = Y->n - 1; j >= 0; j-- )
+ if( Y->p[j] != 0 )
+ break;
+
+ if( i < 0 && j < 0 )
+ return( 0 );
+
+ if( i > j ) return( 1 );
+ if( j > i ) return( -1 );
+
+ for( ; i >= 0; i-- )
+ {
+ if( X->p[i] > Y->p[i] ) return( 1 );
+ if( X->p[i] < Y->p[i] ) return( -1 );
+ }
+
+ return( 0 );
+}
+
+/*
+ * Compare signed values
+ */
+int mpi_cmp_mpi( mpi *X, mpi *Y )
+{
+ int i, j;
+
+ for( i = X->n - 1; i >= 0; i-- )
+ if( X->p[i] != 0 )
+ break;
+
+ for( j = Y->n - 1; j >= 0; j-- )
+ if( Y->p[j] != 0 )
+ break;
+
+ if( i < 0 && j < 0 )
+ return( 0 );
+
+ if( i > j ) return( X->s );
+ if( j > i ) return( -X->s );
+
+ if( X->s > 0 && Y->s < 0 ) return( 1 );
+ if( Y->s > 0 && X->s < 0 ) return( -1 );
+
+ for( ; i >= 0; i-- )
+ {
+ if( X->p[i] > Y->p[i] ) return( X->s );
+ if( X->p[i] < Y->p[i] ) return( -X->s );
+ }
+
+ return( 0 );
+}
+
+/*
+ * Compare signed values
+ */
+int mpi_cmp_int( mpi *X, int z )
+{
+ mpi Y;
+ t_int p[1];
+
+ *p = ( z < 0 ) ? -z : z;
+ Y.s = ( z < 0 ) ? -1 : 1;
+ Y.n = 1;
+ Y.p = p;
+
+ return( mpi_cmp_mpi( X, &Y ) );
+}
+
+/*
+ * Unsigned addition: X = |A| + |B| (HAC 14.7)
+ */
+int mpi_add_abs( mpi *X, mpi *A, mpi *B )
+{
+ int ret, i, j;
+ t_int *o, *p, c;
+
+ if( X == B )
+ {
+ mpi *T = A; A = X; B = T;
+ }
+
+ if( X != A )
+ MPI_CHK( mpi_copy( X, A ) );
+
+ for( j = B->n - 1; j >= 0; j-- )
+ if( B->p[j] != 0 )
+ break;
+
+ MPI_CHK( mpi_grow( X, j + 1 ) );
+
+ o = B->p; p = X->p; c = 0;
+
+ for( i = 0; i <= j; i++, o++, p++ )
+ {
+ *p += c; c = ( *p < c );
+ *p += *o; c += ( *p < *o );
+ }
+
+ while( c != 0 )
+ {
+ if( i >= X->n )
+ {
+ MPI_CHK( mpi_grow( X, i + 1 ) );
+ p = X->p + i;
+ }
+
+ *p += c; c = ( *p < c ); i++;
+ }
+
+cleanup:
+
+ return( ret );
+}
+
+/*
+ * Helper for mpi substraction
+ */
+static void mpi_sub_hlp( int n, t_int *s, t_int *d )
+{
+ int i;
+ t_int c, z;
+
+ for( i = c = 0; i < n; i++, s++, d++ )
+ {
+ z = ( *d < c ); *d -= c;
+ c = ( *d < *s ) + z; *d -= *s;
+ }
+
+ while( c != 0 )
+ {
+ z = ( *d < c ); *d -= c;
+ c = z; i++; d++;
+ }
+}
+
+/*
+ * Unsigned substraction: X = |A| - |B| (HAC 14.9)
+ */
+int mpi_sub_abs( mpi *X, mpi *A, mpi *B )
+{
+ mpi TB;
+ int ret, n;
+
+ if( mpi_cmp_abs( A, B ) < 0 )
+ return( POLARSSL_ERR_MPI_NEGATIVE_VALUE );
+
+ mpi_init( &TB, NULL );
+
+ if( X == B )
+ {
+ MPI_CHK( mpi_copy( &TB, B ) );
+ B = &TB;
+ }
+
+ if( X != A )
+ MPI_CHK( mpi_copy( X, A ) );
+
+ ret = 0;
+
+ for( n = B->n - 1; n >= 0; n-- )
+ if( B->p[n] != 0 )
+ break;
+
+ mpi_sub_hlp( n + 1, B->p, X->p );
+
+cleanup:
+
+ mpi_free( &TB, NULL );
+
+ return( ret );
+}
+
+/*
+ * Signed addition: X = A + B
+ */
+int mpi_add_mpi( mpi *X, mpi *A, mpi *B )
+{
+ int ret, s = A->s;
+
+ if( A->s * B->s < 0 )
+ {
+ if( mpi_cmp_abs( A, B ) >= 0 )
+ {
+ MPI_CHK( mpi_sub_abs( X, A, B ) );
+ X->s = s;
+ }
+ else
+ {
+ MPI_CHK( mpi_sub_abs( X, B, A ) );
+ X->s = -s;
+ }
+ }
+ else
+ {
+ MPI_CHK( mpi_add_abs( X, A, B ) );
+ X->s = s;
+ }
+
+cleanup:
+
+ return( ret );
+}
+
+/*
+ * Signed substraction: X = A - B
+ */
+int mpi_sub_mpi( mpi *X, mpi *A, mpi *B )
+{
+ int ret, s = A->s;
+
+ if( A->s * B->s > 0 )
+ {
+ if( mpi_cmp_abs( A, B ) >= 0 )
+ {
+ MPI_CHK( mpi_sub_abs( X, A, B ) );
+ X->s = s;
+ }
+ else
+ {
+ MPI_CHK( mpi_sub_abs( X, B, A ) );
+ X->s = -s;
+ }
+ }
+ else
+ {
+ MPI_CHK( mpi_add_abs( X, A, B ) );
+ X->s = s;
+ }
+
+cleanup:
+
+ return( ret );
+}
+
+/*
+ * Signed addition: X = A + b
+ */
+int mpi_add_int( mpi *X, mpi *A, int b )
+{
+ mpi _B;
+ t_int p[1];
+
+ p[0] = ( b < 0 ) ? -b : b;
+ _B.s = ( b < 0 ) ? -1 : 1;
+ _B.n = 1;
+ _B.p = p;
+
+ return( mpi_add_mpi( X, A, &_B ) );
+}
+
+/*
+ * Signed substraction: X = A - b
+ */
+int mpi_sub_int( mpi *X, mpi *A, int b )
+{
+ mpi _B;
+ t_int p[1];
+
+ p[0] = ( b < 0 ) ? -b : b;
+ _B.s = ( b < 0 ) ? -1 : 1;
+ _B.n = 1;
+ _B.p = p;
+
+ return( mpi_sub_mpi( X, A, &_B ) );
+}
+
+/*
+ * Helper for mpi multiplication
+ */
+static void mpi_mul_hlp( int i, t_int *s, t_int *d, t_int b )
+{
+ t_int c = 0, t = 0;
+
+#if defined(MULADDC_HUIT)
+ for( ; i >= 8; i -= 8 )
+ {
+ MULADDC_INIT
+ MULADDC_HUIT
+ MULADDC_STOP
+ }
+
+ for( ; i > 0; i-- )
+ {
+ MULADDC_INIT
+ MULADDC_CORE
+ MULADDC_STOP
+ }
+#else
+ for( ; i >= 16; i -= 16 )
+ {
+ MULADDC_INIT
+ MULADDC_CORE MULADDC_CORE
+ MULADDC_CORE MULADDC_CORE
+ MULADDC_CORE MULADDC_CORE
+ MULADDC_CORE MULADDC_CORE
+
+ MULADDC_CORE MULADDC_CORE
+ MULADDC_CORE MULADDC_CORE
+ MULADDC_CORE MULADDC_CORE
+ MULADDC_CORE MULADDC_CORE
+ MULADDC_STOP
+ }
+
+ for( ; i >= 8; i -= 8 )
+ {
+ MULADDC_INIT
+ MULADDC_CORE MULADDC_CORE
+ MULADDC_CORE MULADDC_CORE
+
+ MULADDC_CORE MULADDC_CORE
+ MULADDC_CORE MULADDC_CORE
+ MULADDC_STOP
+ }
+
+ for( ; i > 0; i-- )
+ {
+ MULADDC_INIT
+ MULADDC_CORE
+ MULADDC_STOP
+ }
+#endif
+
+ t++;
+
+ do {
+ *d += c; c = ( *d < c ); d++;
+ }
+ while( c != 0 );
+}
+
+/*
+ * Baseline multiplication: X = A * B (HAC 14.12)
+ */
+int mpi_mul_mpi( mpi *X, mpi *A, mpi *B )
+{
+ int ret, i, j;
+ mpi TA, TB;
+
+ mpi_init( &TA, &TB, NULL );
+
+ if( X == A ) { MPI_CHK( mpi_copy( &TA, A ) ); A = &TA; }
+ if( X == B ) { MPI_CHK( mpi_copy( &TB, B ) ); B = &TB; }
+
+ for( i = A->n - 1; i >= 0; i-- )
+ if( A->p[i] != 0 )
+ break;
+
+ for( j = B->n - 1; j >= 0; j-- )
+ if( B->p[j] != 0 )
+ break;
+
+ MPI_CHK( mpi_grow( X, i + j + 2 ) );
+ MPI_CHK( mpi_lset( X, 0 ) );
+
+ for( i++; j >= 0; j-- )
+ mpi_mul_hlp( i, A->p, X->p + j, B->p[j] );
+
+ X->s = A->s * B->s;
+
+cleanup:
+
+ mpi_free( &TB, &TA, NULL );
+
+ return( ret );
+}
+
+/*
+ * Baseline multiplication: X = A * b
+ */
+int mpi_mul_int( mpi *X, mpi *A, t_int b )
+{
+ mpi _B;
+ t_int p[1];
+
+ _B.s = 1;
+ _B.n = 1;
+ _B.p = p;
+ p[0] = b;
+
+ return( mpi_mul_mpi( X, A, &_B ) );
+}
+
+/*
+ * Division by mpi: A = Q * B + R (HAC 14.20)
+ */
+int mpi_div_mpi( mpi *Q, mpi *R, mpi *A, mpi *B )
+{
+ int ret, i, n, t, k;
+ mpi X, Y, Z, T1, T2;
+
+ if( mpi_cmp_int( B, 0 ) == 0 )
+ return( POLARSSL_ERR_MPI_DIVISION_BY_ZERO );
+
+ mpi_init( &X, &Y, &Z, &T1, &T2, NULL );
+
+ if( mpi_cmp_abs( A, B ) < 0 )
+ {
+ if( Q != NULL ) MPI_CHK( mpi_lset( Q, 0 ) );
+ if( R != NULL ) MPI_CHK( mpi_copy( R, A ) );
+ return( 0 );
+ }
+
+ MPI_CHK( mpi_copy( &X, A ) );
+ MPI_CHK( mpi_copy( &Y, B ) );
+ X.s = Y.s = 1;
+
+ MPI_CHK( mpi_grow( &Z, A->n + 2 ) );
+ MPI_CHK( mpi_lset( &Z, 0 ) );
+ MPI_CHK( mpi_grow( &T1, 2 ) );
+ MPI_CHK( mpi_grow( &T2, 3 ) );
+
+ k = mpi_msb( &Y ) % biL;
+ if( k < (int) biL - 1 )
+ {
+ k = biL - 1 - k;
+ MPI_CHK( mpi_shift_l( &X, k ) );
+ MPI_CHK( mpi_shift_l( &Y, k ) );
+ }
+ else k = 0;
+
+ n = X.n - 1;
+ t = Y.n - 1;
+ mpi_shift_l( &Y, biL * (n - t) );
+
+ while( mpi_cmp_mpi( &X, &Y ) >= 0 )
+ {
+ Z.p[n - t]++;
+ mpi_sub_mpi( &X, &X, &Y );
+ }
+ mpi_shift_r( &Y, biL * (n - t) );
+
+ for( i = n; i > t ; i-- )
+ {
+ if( X.p[i] >= Y.p[t] )
+ Z.p[i - t - 1] = ~0;
+ else
+ {
+#if defined(POLARSSL_HAVE_LONGLONG)
+ t_dbl r;
+
+ r = (t_dbl) X.p[i] << biL;
+ r |= (t_dbl) X.p[i - 1];
+ r /= Y.p[t];
+ if( r > ((t_dbl) 1 << biL) - 1)
+ r = ((t_dbl) 1 << biL) - 1;
+
+ Z.p[i - t - 1] = (t_int) r;
+#else
+ /*
+ * __udiv_qrnnd_c, from gmp/longlong.h
+ */
+ t_int q0, q1, r0, r1;
+ t_int d0, d1, d, m;
+
+ d = Y.p[t];
+ d0 = ( d << biH ) >> biH;
+ d1 = ( d >> biH );
+
+ q1 = X.p[i] / d1;
+ r1 = X.p[i] - d1 * q1;
+ r1 <<= biH;
+ r1 |= ( X.p[i - 1] >> biH );
+
+ m = q1 * d0;
+ if( r1 < m )
+ {
+ q1--, r1 += d;
+ while( r1 >= d && r1 < m )
+ q1--, r1 += d;
+ }
+ r1 -= m;
+
+ q0 = r1 / d1;
+ r0 = r1 - d1 * q0;
+ r0 <<= biH;
+ r0 |= ( X.p[i - 1] << biH ) >> biH;
+
+ m = q0 * d0;
+ if( r0 < m )
+ {
+ q0--, r0 += d;
+ while( r0 >= d && r0 < m )
+ q0--, r0 += d;
+ }
+ r0 -= m;
+
+ Z.p[i - t - 1] = ( q1 << biH ) | q0;
+#endif
+ }
+
+ Z.p[i - t - 1]++;
+ do
+ {
+ Z.p[i - t - 1]--;
+
+ MPI_CHK( mpi_lset( &T1, 0 ) );
+ T1.p[0] = (t < 1) ? 0 : Y.p[t - 1];
+ T1.p[1] = Y.p[t];
+ MPI_CHK( mpi_mul_int( &T1, &T1, Z.p[i - t - 1] ) );
+
+ MPI_CHK( mpi_lset( &T2, 0 ) );
+ T2.p[0] = (i < 2) ? 0 : X.p[i - 2];
+ T2.p[1] = (i < 1) ? 0 : X.p[i - 1];
+ T2.p[2] = X.p[i];
+ }
+ while( mpi_cmp_mpi( &T1, &T2 ) > 0 );
+
+ MPI_CHK( mpi_mul_int( &T1, &Y, Z.p[i - t - 1] ) );
+ MPI_CHK( mpi_shift_l( &T1, biL * (i - t - 1) ) );
+ MPI_CHK( mpi_sub_mpi( &X, &X, &T1 ) );
+
+ if( mpi_cmp_int( &X, 0 ) < 0 )
+ {
+ MPI_CHK( mpi_copy( &T1, &Y ) );
+ MPI_CHK( mpi_shift_l( &T1, biL * (i - t - 1) ) );
+ MPI_CHK( mpi_add_mpi( &X, &X, &T1 ) );
+ Z.p[i - t - 1]--;
+ }
+ }
+
+ if( Q != NULL )
+ {
+ mpi_copy( Q, &Z );
+ Q->s = A->s * B->s;
+ }
+
+ if( R != NULL )
+ {
+ mpi_shift_r( &X, k );
+ mpi_copy( R, &X );
+
+ R->s = A->s;
+ if( mpi_cmp_int( R, 0 ) == 0 )
+ R->s = 1;
+ }
+
+cleanup:
+
+ mpi_free( &X, &Y, &Z, &T1, &T2, NULL );
+
+ return( ret );
+}
+
+/*
+ * Division by int: A = Q * b + R
+ *
+ * Returns 0 if successful
+ * 1 if memory allocation failed
+ * POLARSSL_ERR_MPI_DIVISION_BY_ZERO if b == 0
+ */
+int mpi_div_int( mpi *Q, mpi *R, mpi *A, int b )
+{
+ mpi _B;
+ t_int p[1];
+
+ p[0] = ( b < 0 ) ? -b : b;
+ _B.s = ( b < 0 ) ? -1 : 1;
+ _B.n = 1;
+ _B.p = p;
+
+ return( mpi_div_mpi( Q, R, A, &_B ) );
+}
+
+/*
+ * Modulo: R = A mod B
+ */
+int mpi_mod_mpi( mpi *R, mpi *A, mpi *B )
+{
+ int ret;
+
+ MPI_CHK( mpi_div_mpi( NULL, R, A, B ) );
+
+ while( mpi_cmp_int( R, 0 ) < 0 )
+ MPI_CHK( mpi_add_mpi( R, R, B ) );
+
+ while( mpi_cmp_mpi( R, B ) >= 0 )
+ MPI_CHK( mpi_sub_mpi( R, R, B ) );
+
+cleanup:
+
+ return( ret );
+}
+
+/*
+ * Modulo: r = A mod b
+ */
+int mpi_mod_int( t_int *r, mpi *A, int b )
+{
+ int i;
+ t_int x, y, z;
+
+ if( b == 0 )
+ return( POLARSSL_ERR_MPI_DIVISION_BY_ZERO );
+
+ if( b < 0 )
+ b = -b;
+
+ /*
+ * handle trivial cases
+ */
+ if( b == 1 )
+ {
+ *r = 0;
+ return( 0 );
+ }
+
+ if( b == 2 )
+ {
+ *r = A->p[0] & 1;
+ return( 0 );
+ }
+
+ /*
+ * general case
+ */
+ for( i = A->n - 1, y = 0; i >= 0; i-- )
+ {
+ x = A->p[i];
+ y = ( y << biH ) | ( x >> biH );
+ z = y / b;
+ y -= z * b;
+
+ x <<= biH;
+ y = ( y << biH ) | ( x >> biH );
+ z = y / b;
+ y -= z * b;
+ }
+
+ *r = y;
+
+ return( 0 );
+}
+
+/*
+ * Fast Montgomery initialization (thanks to Tom St Denis)
+ */
+static void mpi_montg_init( t_int *mm, mpi *N )
+{
+ t_int x, m0 = N->p[0];
+
+ x = m0;
+ x += ( ( m0 + 2 ) & 4 ) << 1;
+ x *= ( 2 - ( m0 * x ) );
+
+ if( biL >= 16 ) x *= ( 2 - ( m0 * x ) );
+ if( biL >= 32 ) x *= ( 2 - ( m0 * x ) );
+ if( biL >= 64 ) x *= ( 2 - ( m0 * x ) );
+
+ *mm = ~x + 1;
+}
+
+/*
+ * Montgomery multiplication: A = A * B * R^-1 mod N (HAC 14.36)
+ */
+static void mpi_montmul( mpi *A, mpi *B, mpi *N, t_int mm, mpi *T )
+{
+ int i, n, m;
+ t_int u0, u1, *d;
+
+ memset( T->p, 0, T->n * ciL );
+
+ d = T->p;
+ n = N->n;
+ m = ( B->n < n ) ? B->n : n;
+
+ for( i = 0; i < n; i++ )
+ {
+ /*
+ * T = (T + u0*B + u1*N) / 2^biL
+ */
+ u0 = A->p[i];
+ u1 = ( d[0] + u0 * B->p[0] ) * mm;
+
+ mpi_mul_hlp( m, B->p, d, u0 );
+ mpi_mul_hlp( n, N->p, d, u1 );
+
+ *d++ = u0; d[n + 1] = 0;
+ }
+
+ memcpy( A->p, d, (n + 1) * ciL );
+
+ if( mpi_cmp_abs( A, N ) >= 0 )
+ mpi_sub_hlp( n, N->p, A->p );
+ else
+ /* prevent timing attacks */
+ mpi_sub_hlp( n, A->p, T->p );
+}
+
+/*
+ * Montgomery reduction: A = A * R^-1 mod N
+ */
+static void mpi_montred( mpi *A, mpi *N, t_int mm, mpi *T )
+{
+ t_int z = 1;
+ mpi U;
+
+ U.n = U.s = z;
+ U.p = &z;
+
+ mpi_montmul( A, &U, N, mm, T );
+}
+
+/*
+ * Sliding-window exponentiation: X = A^E mod N (HAC 14.85)
+ */
+int mpi_exp_mod( mpi *X, mpi *A, mpi *E, mpi *N, mpi *_RR )
+{
+ int ret, i, j, wsize, wbits;
+ int bufsize, nblimbs, nbits;
+ t_int ei, mm, state;
+ mpi RR, T, W[64];
+
+ if( mpi_cmp_int( N, 0 ) < 0 || ( N->p[0] & 1 ) == 0 )
+ return( POLARSSL_ERR_MPI_BAD_INPUT_DATA );
+
+ /*
+ * Init temps and window size
+ */
+ mpi_montg_init( &mm, N );
+ mpi_init( &RR, &T, NULL );
+ memset( W, 0, sizeof( W ) );
+
+ i = mpi_msb( E );
+
+ wsize = ( i > 671 ) ? 6 : ( i > 239 ) ? 5 :
+ ( i > 79 ) ? 4 : ( i > 23 ) ? 3 : 1;
+
+ j = N->n + 1;
+ MPI_CHK( mpi_grow( X, j ) );
+ MPI_CHK( mpi_grow( &W[1], j ) );
+ MPI_CHK( mpi_grow( &T, j * 2 ) );
+
+ /*
+ * If 1st call, pre-compute R^2 mod N
+ */
+ if( _RR == NULL || _RR->p == NULL )
+ {
+ MPI_CHK( mpi_lset( &RR, 1 ) );
+ MPI_CHK( mpi_shift_l( &RR, N->n * 2 * biL ) );
+ MPI_CHK( mpi_mod_mpi( &RR, &RR, N ) );
+
+ if( _RR != NULL )
+ memcpy( _RR, &RR, sizeof( mpi ) );
+ }
+ else
+ memcpy( &RR, _RR, sizeof( mpi ) );
+
+ /*
+ * W[1] = A * R^2 * R^-1 mod N = A * R mod N
+ */
+ if( mpi_cmp_mpi( A, N ) >= 0 )
+ mpi_mod_mpi( &W[1], A, N );
+ else mpi_copy( &W[1], A );
+
+ mpi_montmul( &W[1], &RR, N, mm, &T );
+
+ /*
+ * X = R^2 * R^-1 mod N = R mod N
+ */
+ MPI_CHK( mpi_copy( X, &RR ) );
+ mpi_montred( X, N, mm, &T );
+
+ if( wsize > 1 )
+ {
+ /*
+ * W[1 << (wsize - 1)] = W[1] ^ (wsize - 1)
+ */
+ j = 1 << (wsize - 1);
+
+ MPI_CHK( mpi_grow( &W[j], N->n + 1 ) );
+ MPI_CHK( mpi_copy( &W[j], &W[1] ) );
+
+ for( i = 0; i < wsize - 1; i++ )
+ mpi_montmul( &W[j], &W[j], N, mm, &T );
+
+ /*
+ * W[i] = W[i - 1] * W[1]
+ */
+ for( i = j + 1; i < (1 << wsize); i++ )
+ {
+ MPI_CHK( mpi_grow( &W[i], N->n + 1 ) );
+ MPI_CHK( mpi_copy( &W[i], &W[i - 1] ) );
+
+ mpi_montmul( &W[i], &W[1], N, mm, &T );
+ }
+ }
+
+ nblimbs = E->n;
+ bufsize = 0;
+ nbits = 0;
+ wbits = 0;
+ state = 0;
+
+ while( 1 )
+ {
+ if( bufsize == 0 )
+ {
+ if( nblimbs-- == 0 )
+ break;
+
+ bufsize = sizeof( t_int ) << 3;
+ }
+
+ bufsize--;
+
+ ei = (E->p[nblimbs] >> bufsize) & 1;
+
+ /*
+ * skip leading 0s
+ */
+ if( ei == 0 && state == 0 )
+ continue;
+
+ if( ei == 0 && state == 1 )
+ {
+ /*
+ * out of window, square X
+ */
+ mpi_montmul( X, X, N, mm, &T );
+ continue;
+ }
+
+ /*
+ * add ei to current window
+ */
+ state = 2;
+
+ nbits++;
+ wbits |= (ei << (wsize - nbits));
+
+ if( nbits == wsize )
+ {
+ /*
+ * X = X^wsize R^-1 mod N
+ */
+ for( i = 0; i < wsize; i++ )
+ mpi_montmul( X, X, N, mm, &T );
+
+ /*
+ * X = X * W[wbits] R^-1 mod N
+ */
+ mpi_montmul( X, &W[wbits], N, mm, &T );
+
+ state--;
+ nbits = 0;
+ wbits = 0;
+ }
+ }
+
+ /*
+ * process the remaining bits
+ */
+ for( i = 0; i < nbits; i++ )
+ {
+ mpi_montmul( X, X, N, mm, &T );
+
+ wbits <<= 1;
+
+ if( (wbits & (1 << wsize)) != 0 )
+ mpi_montmul( X, &W[1], N, mm, &T );
+ }
+
+ /*
+ * X = A^E * R * R^-1 mod N = A^E mod N
+ */
+ mpi_montred( X, N, mm, &T );
+
+cleanup:
+
+ for( i = (1 << (wsize - 1)); i < (1 << wsize); i++ )
+ mpi_free( &W[i], NULL );
+
+ if( _RR != NULL )
+ mpi_free( &W[1], &T, NULL );
+ else mpi_free( &W[1], &T, &RR, NULL );
+
+ return( ret );
+}
+
+/*
+ * Greatest common divisor: G = gcd(A, B) (HAC 14.54)
+ */
+int mpi_gcd( mpi *G, mpi *A, mpi *B )
+{
+ int ret, lz, lzt;
+ mpi TG, TA, TB;
+
+ mpi_init( &TG, &TA, &TB, NULL );
+
+ MPI_CHK( mpi_copy( &TA, A ) );
+ MPI_CHK( mpi_copy( &TB, B ) );
+
+ lz = mpi_lsb( &TA );
+ lzt = mpi_lsb( &TB );
+
+ if ( lzt < lz )
+ lz = lzt;
+
+ MPI_CHK( mpi_shift_r( &TA, lz ) );
+ MPI_CHK( mpi_shift_r( &TB, lz ) );
+
+ TA.s = TB.s = 1;
+
+ while( mpi_cmp_int( &TA, 0 ) != 0 )
+ {
+ MPI_CHK( mpi_shift_r( &TA, mpi_lsb( &TA ) ) );
+ MPI_CHK( mpi_shift_r( &TB, mpi_lsb( &TB ) ) );
+
+ if( mpi_cmp_mpi( &TA, &TB ) >= 0 )
+ {
+ MPI_CHK( mpi_sub_abs( &TA, &TA, &TB ) );
+ MPI_CHK( mpi_shift_r( &TA, 1 ) );
+ }
+ else
+ {
+ MPI_CHK( mpi_sub_abs( &TB, &TB, &TA ) );
+ MPI_CHK( mpi_shift_r( &TB, 1 ) );
+ }
+ }
+
+ MPI_CHK( mpi_shift_l( &TB, lz ) );
+ MPI_CHK( mpi_copy( G, &TB ) );
+
+cleanup:
+
+ mpi_free( &TB, &TA, &TG, NULL );
+
+ return( ret );
+}
+
+#if defined(POLARSSL_GENPRIME)
+
+/*
+ * Modular inverse: X = A^-1 mod N (HAC 14.61 / 14.64)
+ */
+int mpi_inv_mod( mpi *X, mpi *A, mpi *N )
+{
+ int ret;
+ mpi G, TA, TU, U1, U2, TB, TV, V1, V2;
+
+ if( mpi_cmp_int( N, 0 ) <= 0 )
+ return( POLARSSL_ERR_MPI_BAD_INPUT_DATA );
+
+ mpi_init( &TA, &TU, &U1, &U2, &G,
+ &TB, &TV, &V1, &V2, NULL );
+
+ MPI_CHK( mpi_gcd( &G, A, N ) );
+
+ if( mpi_cmp_int( &G, 1 ) != 0 )
+ {
+ ret = POLARSSL_ERR_MPI_NOT_ACCEPTABLE;
+ goto cleanup;
+ }
+
+ MPI_CHK( mpi_mod_mpi( &TA, A, N ) );
+ MPI_CHK( mpi_copy( &TU, &TA ) );
+ MPI_CHK( mpi_copy( &TB, N ) );
+ MPI_CHK( mpi_copy( &TV, N ) );
+
+ MPI_CHK( mpi_lset( &U1, 1 ) );
+ MPI_CHK( mpi_lset( &U2, 0 ) );
+ MPI_CHK( mpi_lset( &V1, 0 ) );
+ MPI_CHK( mpi_lset( &V2, 1 ) );
+
+ do
+ {
+ while( ( TU.p[0] & 1 ) == 0 )
+ {
+ MPI_CHK( mpi_shift_r( &TU, 1 ) );
+
+ if( ( U1.p[0] & 1 ) != 0 || ( U2.p[0] & 1 ) != 0 )
+ {
+ MPI_CHK( mpi_add_mpi( &U1, &U1, &TB ) );
+ MPI_CHK( mpi_sub_mpi( &U2, &U2, &TA ) );
+ }
+
+ MPI_CHK( mpi_shift_r( &U1, 1 ) );
+ MPI_CHK( mpi_shift_r( &U2, 1 ) );
+ }
+
+ while( ( TV.p[0] & 1 ) == 0 )
+ {
+ MPI_CHK( mpi_shift_r( &TV, 1 ) );
+
+ if( ( V1.p[0] & 1 ) != 0 || ( V2.p[0] & 1 ) != 0 )
+ {
+ MPI_CHK( mpi_add_mpi( &V1, &V1, &TB ) );
+ MPI_CHK( mpi_sub_mpi( &V2, &V2, &TA ) );
+ }
+
+ MPI_CHK( mpi_shift_r( &V1, 1 ) );
+ MPI_CHK( mpi_shift_r( &V2, 1 ) );
+ }
+
+ if( mpi_cmp_mpi( &TU, &TV ) >= 0 )
+ {
+ MPI_CHK( mpi_sub_mpi( &TU, &TU, &TV ) );
+ MPI_CHK( mpi_sub_mpi( &U1, &U1, &V1 ) );
+ MPI_CHK( mpi_sub_mpi( &U2, &U2, &V2 ) );
+ }
+ else
+ {
+ MPI_CHK( mpi_sub_mpi( &TV, &TV, &TU ) );
+ MPI_CHK( mpi_sub_mpi( &V1, &V1, &U1 ) );
+ MPI_CHK( mpi_sub_mpi( &V2, &V2, &U2 ) );
+ }
+ }
+ while( mpi_cmp_int( &TU, 0 ) != 0 );
+
+ while( mpi_cmp_int( &V1, 0 ) < 0 )
+ MPI_CHK( mpi_add_mpi( &V1, &V1, N ) );
+
+ while( mpi_cmp_mpi( &V1, N ) >= 0 )
+ MPI_CHK( mpi_sub_mpi( &V1, &V1, N ) );
+
+ MPI_CHK( mpi_copy( X, &V1 ) );
+
+cleanup:
+
+ mpi_free( &V2, &V1, &TV, &TB, &G,
+ &U2, &U1, &TU, &TA, NULL );
+
+ return( ret );
+}
+
+static const int small_prime[] =
+{
+ 3, 5, 7, 11, 13, 17, 19, 23,
+ 29, 31, 37, 41, 43, 47, 53, 59,
+ 61, 67, 71, 73, 79, 83, 89, 97,
+ 101, 103, 107, 109, 113, 127, 131, 137,
+ 139, 149, 151, 157, 163, 167, 173, 179,
+ 181, 191, 193, 197, 199, 211, 223, 227,
+ 229, 233, 239, 241, 251, 257, 263, 269,
+ 271, 277, 281, 283, 293, 307, 311, 313,
+ 317, 331, 337, 347, 349, 353, 359, 367,
+ 373, 379, 383, 389, 397, 401, 409, 419,
+ 421, 431, 433, 439, 443, 449, 457, 461,
+ 463, 467, 479, 487, 491, 499, 503, 509,
+ 521, 523, 541, 547, 557, 563, 569, 571,
+ 577, 587, 593, 599, 601, 607, 613, 617,
+ 619, 631, 641, 643, 647, 653, 659, 661,
+ 673, 677, 683, 691, 701, 709, 719, 727,
+ 733, 739, 743, 751, 757, 761, 769, 773,
+ 787, 797, 809, 811, 821, 823, 827, 829,
+ 839, 853, 857, 859, 863, 877, 881, 883,
+ 887, 907, 911, 919, 929, 937, 941, 947,
+ 953, 967, 971, 977, 983, 991, 997, -103
+};
+
+/*
+ * Miller-Rabin primality test (HAC 4.24)
+ */
+int mpi_is_prime( mpi *X, int (*f_rng)(void *), void *p_rng )
+{
+ int ret, i, j, n, s, xs;
+ mpi W, R, T, A, RR;
+ unsigned char *p;
+
+ if( mpi_cmp_int( X, 0 ) == 0 )
+ return( 0 );
+
+ mpi_init( &W, &R, &T, &A, &RR, NULL );
+
+ xs = X->s; X->s = 1;
+
+ /*
+ * test trivial factors first
+ */
+ if( ( X->p[0] & 1 ) == 0 )
+ return( POLARSSL_ERR_MPI_NOT_ACCEPTABLE );
+
+ for( i = 0; small_prime[i] > 0; i++ )
+ {
+ t_int r;
+
+ if( mpi_cmp_int( X, small_prime[i] ) <= 0 )
+ return( 0 );
+
+ MPI_CHK( mpi_mod_int( &r, X, small_prime[i] ) );
+
+ if( r == 0 )
+ return( POLARSSL_ERR_MPI_NOT_ACCEPTABLE );
+ }
+
+ /*
+ * W = |X| - 1
+ * R = W >> lsb( W )
+ */
+ s = mpi_lsb( &W );
+ MPI_CHK( mpi_sub_int( &W, X, 1 ) );
+ MPI_CHK( mpi_copy( &R, &W ) );
+ MPI_CHK( mpi_shift_r( &R, s ) );
+
+ i = mpi_msb( X );
+ /*
+ * HAC, table 4.4
+ */
+ n = ( ( i >= 1300 ) ? 2 : ( i >= 850 ) ? 3 :
+ ( i >= 650 ) ? 4 : ( i >= 350 ) ? 8 :
+ ( i >= 250 ) ? 12 : ( i >= 150 ) ? 18 : 27 );
+
+ for( i = 0; i < n; i++ )
+ {
+ /*
+ * pick a random A, 1 < A < |X| - 1
+ */
+ MPI_CHK( mpi_grow( &A, X->n ) );
+
+ p = (unsigned char *) A.p;
+ for( j = 0; j < A.n * ciL; j++ )
+ *p++ = (unsigned char) f_rng( p_rng );
+
+ j = mpi_msb( &A ) - mpi_msb( &W );
+ MPI_CHK( mpi_shift_r( &A, j + 1 ) );
+ A.p[0] |= 3;
+
+ /*
+ * A = A^R mod |X|
+ */
+ MPI_CHK( mpi_exp_mod( &A, &A, &R, X, &RR ) );
+
+ if( mpi_cmp_mpi( &A, &W ) == 0 ||
+ mpi_cmp_int( &A, 1 ) == 0 )
+ continue;
+
+ j = 1;
+ while( j < s && mpi_cmp_mpi( &A, &W ) != 0 )
+ {
+ /*
+ * A = A * A mod |X|
+ */
+ MPI_CHK( mpi_mul_mpi( &T, &A, &A ) );
+ MPI_CHK( mpi_mod_mpi( &A, &T, X ) );
+
+ if( mpi_cmp_int( &A, 1 ) == 0 )
+ break;
+
+ j++;
+ }
+
+ /*
+ * not prime if A != |X| - 1 or A == 1
+ */
+ if( mpi_cmp_mpi( &A, &W ) != 0 ||
+ mpi_cmp_int( &A, 1 ) == 0 )
+ {
+ ret = POLARSSL_ERR_MPI_NOT_ACCEPTABLE;
+ break;
+ }
+ }
+
+cleanup:
+
+ X->s = xs;
+
+ mpi_free( &RR, &A, &T, &R, &W, NULL );
+
+ return( ret );
+}
+
+/*
+ * Prime number generation
+ */
+int mpi_gen_prime( mpi *X, int nbits, int dh_flag,
+ int (*f_rng)(void *), void *p_rng )
+{
+ int ret, k, n;
+ unsigned char *p;
+ mpi Y;
+
+ if( nbits < 3 )
+ return( POLARSSL_ERR_MPI_BAD_INPUT_DATA );
+
+ mpi_init( &Y, NULL );
+
+ n = BITS_TO_LIMBS( nbits );
+
+ MPI_CHK( mpi_grow( X, n ) );
+ MPI_CHK( mpi_lset( X, 0 ) );
+
+ p = (unsigned char *) X->p;
+ for( k = 0; k < X->n * ciL; k++ )
+ *p++ = (unsigned char) f_rng( p_rng );
+
+ k = mpi_msb( X );
+ if( k < nbits ) MPI_CHK( mpi_shift_l( X, nbits - k ) );
+ if( k > nbits ) MPI_CHK( mpi_shift_r( X, k - nbits ) );
+
+ X->p[0] |= 3;
+
+ if( dh_flag == 0 )
+ {
+ while( ( ret = mpi_is_prime( X, f_rng, p_rng ) ) != 0 )
+ {
+ if( ret != POLARSSL_ERR_MPI_NOT_ACCEPTABLE )
+ goto cleanup;
+
+ MPI_CHK( mpi_add_int( X, X, 2 ) );
+ }
+ }
+ else
+ {
+ MPI_CHK( mpi_sub_int( &Y, X, 1 ) );
+ MPI_CHK( mpi_shift_r( &Y, 1 ) );
+
+ while( 1 )
+ {
+ if( ( ret = mpi_is_prime( X, f_rng, p_rng ) ) == 0 )
+ {
+ if( ( ret = mpi_is_prime( &Y, f_rng, p_rng ) ) == 0 )
+ break;
+
+ if( ret != POLARSSL_ERR_MPI_NOT_ACCEPTABLE )
+ goto cleanup;
+ }
+
+ if( ret != POLARSSL_ERR_MPI_NOT_ACCEPTABLE )
+ goto cleanup;
+
+ MPI_CHK( mpi_add_int( &Y, X, 1 ) );
+ MPI_CHK( mpi_add_int( X, X, 2 ) );
+ MPI_CHK( mpi_shift_r( &Y, 1 ) );
+ }
+ }
+
+cleanup:
+
+ mpi_free( &Y, NULL );
+
+ return( ret );
+}
+
+#endif
+
+#if defined(POLARSSL_SELF_TEST)
+
+#define GCD_PAIR_COUNT 3
+
+static const int gcd_pairs[GCD_PAIR_COUNT][3] =
+{
+ { 693, 609, 21 },
+ { 1764, 868, 28 },
+ { 768454923, 542167814, 1 }
+};
+
+/*
+ * Checkup routine
+ */
+int mpi_self_test( int verbose )
+{
+ int ret, i;
+ mpi A, E, N, X, Y, U, V;
+
+ mpi_init( &A, &E, &N, &X, &Y, &U, &V, NULL );
+
+ MPI_CHK( mpi_read_string( &A, 16,
+ "EFE021C2645FD1DC586E69184AF4A31E" \
+ "D5F53E93B5F123FA41680867BA110131" \
+ "944FE7952E2517337780CB0DB80E61AA" \
+ "E7C8DDC6C5C6AADEB34EB38A2F40D5E6" ) );
+
+ MPI_CHK( mpi_read_string( &E, 16,
+ "B2E7EFD37075B9F03FF989C7C5051C20" \
+ "34D2A323810251127E7BF8625A4F49A5" \
+ "F3E27F4DA8BD59C47D6DAABA4C8127BD" \
+ "5B5C25763222FEFCCFC38B832366C29E" ) );
+
+ MPI_CHK( mpi_read_string( &N, 16,
+ "0066A198186C18C10B2F5ED9B522752A" \
+ "9830B69916E535C8F047518A889A43A5" \
+ "94B6BED27A168D31D4A52F88925AA8F5" ) );
+
+ MPI_CHK( mpi_mul_mpi( &X, &A, &N ) );
+
+ MPI_CHK( mpi_read_string( &U, 16,
+ "602AB7ECA597A3D6B56FF9829A5E8B85" \
+ "9E857EA95A03512E2BAE7391688D264A" \
+ "A5663B0341DB9CCFD2C4C5F421FEC814" \
+ "8001B72E848A38CAE1C65F78E56ABDEF" \
+ "E12D3C039B8A02D6BE593F0BBBDA56F1" \
+ "ECF677152EF804370C1A305CAF3B5BF1" \
+ "30879B56C61DE584A0F53A2447A51E" ) );
+
+ if( verbose != 0 )
+ printf( " MPI test #1 (mul_mpi): " );
+
+ if( mpi_cmp_mpi( &X, &U ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n" );
+
+ MPI_CHK( mpi_div_mpi( &X, &Y, &A, &N ) );
+
+ MPI_CHK( mpi_read_string( &U, 16,
+ "256567336059E52CAE22925474705F39A94" ) );
+
+ MPI_CHK( mpi_read_string( &V, 16,
+ "6613F26162223DF488E9CD48CC132C7A" \
+ "0AC93C701B001B092E4E5B9F73BCD27B" \
+ "9EE50D0657C77F374E903CDFA4C642" ) );
+
+ if( verbose != 0 )
+ printf( " MPI test #2 (div_mpi): " );
+
+ if( mpi_cmp_mpi( &X, &U ) != 0 ||
+ mpi_cmp_mpi( &Y, &V ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n" );
+
+ MPI_CHK( mpi_exp_mod( &X, &A, &E, &N, NULL ) );
+
+ MPI_CHK( mpi_read_string( &U, 16,
+ "36E139AEA55215609D2816998ED020BB" \
+ "BD96C37890F65171D948E9BC7CBAA4D9" \
+ "325D24D6A3C12710F10A09FA08AB87" ) );
+
+ if( verbose != 0 )
+ printf( " MPI test #3 (exp_mod): " );
+
+ if( mpi_cmp_mpi( &X, &U ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n" );
+
+ MPI_CHK( mpi_inv_mod( &X, &A, &N ) );
+
+ MPI_CHK( mpi_read_string( &U, 16,
+ "003A0AAEDD7E784FC07D8F9EC6E3BFD5" \
+ "C3DBA76456363A10869622EAC2DD84EC" \
+ "C5B8A74DAC4D09E03B5E0BE779F2DF61" ) );
+
+ if( verbose != 0 )
+ printf( " MPI test #4 (inv_mod): " );
+
+ if( mpi_cmp_mpi( &X, &U ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n" );
+
+ if( verbose != 0 )
+ printf( " MPI test #5 (simple gcd): " );
+
+ for ( i = 0; i < GCD_PAIR_COUNT; i++)
+ {
+ MPI_CHK( mpi_lset( &X, gcd_pairs[i][0] ) );
+ MPI_CHK( mpi_lset( &Y, gcd_pairs[i][1] ) );
+
+ MPI_CHK( mpi_gcd( &A, &X, &Y ) );
+
+ if( mpi_cmp_int( &A, gcd_pairs[i][2] ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed at %d\n", i );
+
+ return( 1 );
+ }
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n" );
+
+cleanup:
+
+ if( ret != 0 && verbose != 0 )
+ printf( "Unexpected error, return code = %08X\n", ret );
+
+ mpi_free( &V, &U, &Y, &X, &N, &E, &A, NULL );
+
+ if( verbose != 0 )
+ printf( "\n" );
+
+ return( ret );
+}
+
+#endif
+
+#endif
diff --git a/package/px5g/src/library/havege.c b/package/px5g/src/library/havege.c
new file mode 100644
index 000000000..266299d3b
--- /dev/null
+++ b/package/px5g/src/library/havege.c
@@ -0,0 +1,276 @@
+/*
+ * HAVEGE: HArdware Volatile Entropy Gathering and Expansion
+ *
+ * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
+ *
+ * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the names of PolarSSL or XySSL nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/*
+ * The HAVEGE RNG was designed by Andre Seznec in 2002.
+ *
+ * http://www.irisa.fr/caps/projects/hipsor/publi.php
+ *
+ * Contact: seznec(at)irisa_dot_fr - orocheco(at)irisa_dot_fr
+ */
+
+#include <string.h>
+#include <time.h>
+
+#include "polarssl/config.h"
+
+#if defined(POLARSSL_HAVEGE_C)
+
+#include "polarssl/havege.h"
+#include "polarssl/timing.h"
+
+/* ------------------------------------------------------------------------
+ * On average, one iteration accesses two 8-word blocks in the havege WALK
+ * table, and generates 16 words in the RES array.
+ *
+ * The data read in the WALK table is updated and permuted after each use.
+ * The result of the hardware clock counter read is used for this update.
+ *
+ * 25 conditional tests are present. The conditional tests are grouped in
+ * two nested groups of 12 conditional tests and 1 test that controls the
+ * permutation; on average, there should be 6 tests executed and 3 of them
+ * should be mispredicted.
+ * ------------------------------------------------------------------------
+ */
+
+#define SWAP(X,Y) { int *T = X; X = Y; Y = T; }
+
+#define TST1_ENTER if( PTEST & 1 ) { PTEST ^= 3; PTEST >>= 1;
+#define TST2_ENTER if( PTEST & 1 ) { PTEST ^= 3; PTEST >>= 1;
+
+#define TST1_LEAVE U1++; }
+#define TST2_LEAVE U2++; }
+
+#define ONE_ITERATION \
+ \
+ PTEST = PT1 >> 20; \
+ \
+ TST1_ENTER TST1_ENTER TST1_ENTER TST1_ENTER \
+ TST1_ENTER TST1_ENTER TST1_ENTER TST1_ENTER \
+ TST1_ENTER TST1_ENTER TST1_ENTER TST1_ENTER \
+ \
+ TST1_LEAVE TST1_LEAVE TST1_LEAVE TST1_LEAVE \
+ TST1_LEAVE TST1_LEAVE TST1_LEAVE TST1_LEAVE \
+ TST1_LEAVE TST1_LEAVE TST1_LEAVE TST1_LEAVE \
+ \
+ PTX = (PT1 >> 18) & 7; \
+ PT1 &= 0x1FFF; \
+ PT2 &= 0x1FFF; \
+ CLK = (int) hardclock(); \
+ \
+ i = 0; \
+ A = &WALK[PT1 ]; RES[i++] ^= *A; \
+ B = &WALK[PT2 ]; RES[i++] ^= *B; \
+ C = &WALK[PT1 ^ 1]; RES[i++] ^= *C; \
+ D = &WALK[PT2 ^ 4]; RES[i++] ^= *D; \
+ \
+ IN = (*A >> (1)) ^ (*A << (31)) ^ CLK; \
+ *A = (*B >> (2)) ^ (*B << (30)) ^ CLK; \
+ *B = IN ^ U1; \
+ *C = (*C >> (3)) ^ (*C << (29)) ^ CLK; \
+ *D = (*D >> (4)) ^ (*D << (28)) ^ CLK; \
+ \
+ A = &WALK[PT1 ^ 2]; RES[i++] ^= *A; \
+ B = &WALK[PT2 ^ 2]; RES[i++] ^= *B; \
+ C = &WALK[PT1 ^ 3]; RES[i++] ^= *C; \
+ D = &WALK[PT2 ^ 6]; RES[i++] ^= *D; \
+ \
+ if( PTEST & 1 ) SWAP( A, C ); \
+ \
+ IN = (*A >> (5)) ^ (*A << (27)) ^ CLK; \
+ *A = (*B >> (6)) ^ (*B << (26)) ^ CLK; \
+ *B = IN; CLK = (int) hardclock(); \
+ *C = (*C >> (7)) ^ (*C << (25)) ^ CLK; \
+ *D = (*D >> (8)) ^ (*D << (24)) ^ CLK; \
+ \
+ A = &WALK[PT1 ^ 4]; \
+ B = &WALK[PT2 ^ 1]; \
+ \
+ PTEST = PT2 >> 1; \
+ \
+ PT2 = (RES[(i - 8) ^ PTY] ^ WALK[PT2 ^ PTY ^ 7]); \
+ PT2 = ((PT2 & 0x1FFF) & (~8)) ^ ((PT1 ^ 8) & 0x8); \
+ PTY = (PT2 >> 10) & 7; \
+ \
+ TST2_ENTER TST2_ENTER TST2_ENTER TST2_ENTER \
+ TST2_ENTER TST2_ENTER TST2_ENTER TST2_ENTER \
+ TST2_ENTER TST2_ENTER TST2_ENTER TST2_ENTER \
+ \
+ TST2_LEAVE TST2_LEAVE TST2_LEAVE TST2_LEAVE \
+ TST2_LEAVE TST2_LEAVE TST2_LEAVE TST2_LEAVE \
+ TST2_LEAVE TST2_LEAVE TST2_LEAVE TST2_LEAVE \
+ \
+ C = &WALK[PT1 ^ 5]; \
+ D = &WALK[PT2 ^ 5]; \
+ \
+ RES[i++] ^= *A; \
+ RES[i++] ^= *B; \
+ RES[i++] ^= *C; \
+ RES[i++] ^= *D; \
+ \
+ IN = (*A >> ( 9)) ^ (*A << (23)) ^ CLK; \
+ *A = (*B >> (10)) ^ (*B << (22)) ^ CLK; \
+ *B = IN ^ U2; \
+ *C = (*C >> (11)) ^ (*C << (21)) ^ CLK; \
+ *D = (*D >> (12)) ^ (*D << (20)) ^ CLK; \
+ \
+ A = &WALK[PT1 ^ 6]; RES[i++] ^= *A; \
+ B = &WALK[PT2 ^ 3]; RES[i++] ^= *B; \
+ C = &WALK[PT1 ^ 7]; RES[i++] ^= *C; \
+ D = &WALK[PT2 ^ 7]; RES[i++] ^= *D; \
+ \
+ IN = (*A >> (13)) ^ (*A << (19)) ^ CLK; \
+ *A = (*B >> (14)) ^ (*B << (18)) ^ CLK; \
+ *B = IN; \
+ *C = (*C >> (15)) ^ (*C << (17)) ^ CLK; \
+ *D = (*D >> (16)) ^ (*D << (16)) ^ CLK; \
+ \
+ PT1 = ( RES[(i - 8) ^ PTX] ^ \
+ WALK[PT1 ^ PTX ^ 7] ) & (~1); \
+ PT1 ^= (PT2 ^ 0x10) & 0x10; \
+ \
+ for( n++, i = 0; i < 16; i++ ) \
+ hs->pool[n % COLLECT_SIZE] ^= RES[i];
+
+/*
+ * Entropy gathering function
+ */
+static void havege_fill( havege_state *hs )
+{
+ int i, n = 0;
+ int U1, U2, *A, *B, *C, *D;
+ int PT1, PT2, *WALK, RES[16];
+ int PTX, PTY, CLK, PTEST, IN;
+
+ WALK = hs->WALK;
+ PT1 = hs->PT1;
+ PT2 = hs->PT2;
+
+ PTX = U1 = 0;
+ PTY = U2 = 0;
+
+ memset( RES, 0, sizeof( RES ) );
+
+ while( n < COLLECT_SIZE * 4 )
+ {
+ ONE_ITERATION
+ ONE_ITERATION
+ ONE_ITERATION
+ ONE_ITERATION
+ }
+
+ hs->PT1 = PT1;
+ hs->PT2 = PT2;
+
+ hs->offset[0] = 0;
+ hs->offset[1] = COLLECT_SIZE / 2;
+}
+
+/*
+ * HAVEGE initialization
+ */
+void havege_init( havege_state *hs )
+{
+ memset( hs, 0, sizeof( havege_state ) );
+
+ havege_fill( hs );
+}
+
+/*
+ * HAVEGE rand function
+ */
+int havege_rand( void *p_rng )
+{
+ int ret;
+ havege_state *hs = (havege_state *) p_rng;
+
+ if( hs->offset[1] >= COLLECT_SIZE )
+ havege_fill( hs );
+
+ ret = hs->pool[hs->offset[0]++];
+ ret ^= hs->pool[hs->offset[1]++];
+
+ return( ret );
+}
+
+#if defined(POLARSSL_RAND_TEST)
+
+#include <stdio.h>
+
+int main( int argc, char *argv[] )
+{
+ FILE *f;
+ time_t t;
+ int i, j, k;
+ havege_state hs;
+ unsigned char buf[1024];
+
+ if( argc < 2 )
+ {
+ fprintf( stderr, "usage: %s <output filename>\n", argv[0] );
+ return( 1 );
+ }
+
+ if( ( f = fopen( argv[1], "wb+" ) ) == NULL )
+ {
+ printf( "failed to open '%s' for writing.\n", argv[0] );
+ return( 1 );
+ }
+
+ havege_init( &hs );
+
+ t = time( NULL );
+
+ for( i = 0, k = 32768; i < k; i++ )
+ {
+ for( j = 0; j < sizeof( buf ); j++ )
+ buf[j] = havege_rand( &hs );
+
+ fwrite( buf, sizeof( buf ), 1, f );
+
+ printf( "Generating 32Mb of data in file '%s'... %04.1f" \
+ "%% done\r", argv[1], (100 * (float) (i + 1)) / k );
+ fflush( stdout );
+ }
+
+ if( t == time( NULL ) )
+ t--;
+
+ fclose( f );
+ return( 0 );
+}
+
+#endif
+
+#endif
diff --git a/package/px5g/src/library/rsa.c b/package/px5g/src/library/rsa.c
new file mode 100644
index 000000000..131b6c6c9
--- /dev/null
+++ b/package/px5g/src/library/rsa.c
@@ -0,0 +1,750 @@
+/*
+ * The RSA public-key cryptosystem
+ *
+ * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
+ *
+ * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the names of PolarSSL or XySSL nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/*
+ * RSA was designed by Ron Rivest, Adi Shamir and Len Adleman.
+ *
+ * http://theory.lcs.mit.edu/~rivest/rsapaper.pdf
+ * http://www.cacr.math.uwaterloo.ca/hac/about/chap8.pdf
+ */
+
+#include "polarssl/config.h"
+
+#if defined(POLARSSL_RSA_C)
+
+#include "polarssl/rsa.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+/*
+ * Initialize an RSA context
+ */
+void rsa_init( rsa_context *ctx,
+ int padding,
+ int hash_id,
+ int (*f_rng)(void *),
+ void *p_rng )
+{
+ memset( ctx, 0, sizeof( rsa_context ) );
+
+ ctx->padding = padding;
+ ctx->hash_id = hash_id;
+
+ ctx->f_rng = f_rng;
+ ctx->p_rng = p_rng;
+}
+
+#if defined(POLARSSL_GENPRIME)
+
+/*
+ * Generate an RSA keypair
+ */
+int rsa_gen_key( rsa_context *ctx, int nbits, int exponent )
+{
+ int ret;
+ mpi P1, Q1, H, G;
+
+ if( ctx->f_rng == NULL || nbits < 128 || exponent < 3 )
+ return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
+
+ mpi_init( &P1, &Q1, &H, &G, NULL );
+
+ /*
+ * find primes P and Q with Q < P so that:
+ * GCD( E, (P-1)*(Q-1) ) == 1
+ */
+ MPI_CHK( mpi_lset( &ctx->E, exponent ) );
+
+ do
+ {
+ MPI_CHK( mpi_gen_prime( &ctx->P, ( nbits + 1 ) >> 1, 0,
+ ctx->f_rng, ctx->p_rng ) );
+
+ MPI_CHK( mpi_gen_prime( &ctx->Q, ( nbits + 1 ) >> 1, 0,
+ ctx->f_rng, ctx->p_rng ) );
+
+ if( mpi_cmp_mpi( &ctx->P, &ctx->Q ) < 0 )
+ mpi_swap( &ctx->P, &ctx->Q );
+
+ if( mpi_cmp_mpi( &ctx->P, &ctx->Q ) == 0 )
+ continue;
+
+ MPI_CHK( mpi_mul_mpi( &ctx->N, &ctx->P, &ctx->Q ) );
+ if( mpi_msb( &ctx->N ) != nbits )
+ continue;
+
+ MPI_CHK( mpi_sub_int( &P1, &ctx->P, 1 ) );
+ MPI_CHK( mpi_sub_int( &Q1, &ctx->Q, 1 ) );
+ MPI_CHK( mpi_mul_mpi( &H, &P1, &Q1 ) );
+ MPI_CHK( mpi_gcd( &G, &ctx->E, &H ) );
+ }
+ while( mpi_cmp_int( &G, 1 ) != 0 );
+
+ /*
+ * D = E^-1 mod ((P-1)*(Q-1))
+ * DP = D mod (P - 1)
+ * DQ = D mod (Q - 1)
+ * QP = Q^-1 mod P
+ */
+ MPI_CHK( mpi_inv_mod( &ctx->D , &ctx->E, &H ) );
+ MPI_CHK( mpi_mod_mpi( &ctx->DP, &ctx->D, &P1 ) );
+ MPI_CHK( mpi_mod_mpi( &ctx->DQ, &ctx->D, &Q1 ) );
+ MPI_CHK( mpi_inv_mod( &ctx->QP, &ctx->Q, &ctx->P ) );
+
+ ctx->len = ( mpi_msb( &ctx->N ) + 7 ) >> 3;
+
+cleanup:
+
+ mpi_free( &G, &H, &Q1, &P1, NULL );
+
+ if( ret != 0 )
+ {
+ rsa_free( ctx );
+ return( POLARSSL_ERR_RSA_KEY_GEN_FAILED | ret );
+ }
+
+ return( 0 );
+}
+
+#endif
+
+/*
+ * Check a public RSA key
+ */
+int rsa_check_pubkey( rsa_context *ctx )
+{
+ if( ( ctx->N.p[0] & 1 ) == 0 ||
+ ( ctx->E.p[0] & 1 ) == 0 )
+ return( POLARSSL_ERR_RSA_KEY_CHECK_FAILED );
+
+ if( mpi_msb( &ctx->N ) < 128 ||
+ mpi_msb( &ctx->N ) > 4096 )
+ return( POLARSSL_ERR_RSA_KEY_CHECK_FAILED );
+
+ if( mpi_msb( &ctx->E ) < 2 ||
+ mpi_msb( &ctx->E ) > 64 )
+ return( POLARSSL_ERR_RSA_KEY_CHECK_FAILED );
+
+ return( 0 );
+}
+
+/*
+ * Check a private RSA key
+ */
+int rsa_check_privkey( rsa_context *ctx )
+{
+ int ret;
+ mpi PQ, DE, P1, Q1, H, I, G;
+
+ if( ( ret = rsa_check_pubkey( ctx ) ) != 0 )
+ return( ret );
+
+ mpi_init( &PQ, &DE, &P1, &Q1, &H, &I, &G, NULL );
+
+ MPI_CHK( mpi_mul_mpi( &PQ, &ctx->P, &ctx->Q ) );
+ MPI_CHK( mpi_mul_mpi( &DE, &ctx->D, &ctx->E ) );
+ MPI_CHK( mpi_sub_int( &P1, &ctx->P, 1 ) );
+ MPI_CHK( mpi_sub_int( &Q1, &ctx->Q, 1 ) );
+ MPI_CHK( mpi_mul_mpi( &H, &P1, &Q1 ) );
+ MPI_CHK( mpi_mod_mpi( &I, &DE, &H ) );
+ MPI_CHK( mpi_gcd( &G, &ctx->E, &H ) );
+
+ if( mpi_cmp_mpi( &PQ, &ctx->N ) == 0 &&
+ mpi_cmp_int( &I, 1 ) == 0 &&
+ mpi_cmp_int( &G, 1 ) == 0 )
+ {
+ mpi_free( &G, &I, &H, &Q1, &P1, &DE, &PQ, NULL );
+ return( 0 );
+ }
+
+cleanup:
+
+ mpi_free( &G, &I, &H, &Q1, &P1, &DE, &PQ, NULL );
+ return( POLARSSL_ERR_RSA_KEY_CHECK_FAILED | ret );
+}
+
+/*
+ * Do an RSA public key operation
+ */
+int rsa_public( rsa_context *ctx,
+ unsigned char *input,
+ unsigned char *output )
+{
+ int ret, olen;
+ mpi T;
+
+ mpi_init( &T, NULL );
+
+ MPI_CHK( mpi_read_binary( &T, input, ctx->len ) );
+
+ if( mpi_cmp_mpi( &T, &ctx->N ) >= 0 )
+ {
+ mpi_free( &T, NULL );
+ return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
+ }
+
+ olen = ctx->len;
+ MPI_CHK( mpi_exp_mod( &T, &T, &ctx->E, &ctx->N, &ctx->RN ) );
+ MPI_CHK( mpi_write_binary( &T, output, olen ) );
+
+cleanup:
+
+ mpi_free( &T, NULL );
+
+ if( ret != 0 )
+ return( POLARSSL_ERR_RSA_PUBLIC_FAILED | ret );
+
+ return( 0 );
+}
+
+/*
+ * Do an RSA private key operation
+ */
+int rsa_private( rsa_context *ctx,
+ unsigned char *input,
+ unsigned char *output )
+{
+ int ret, olen;
+ mpi T, T1, T2;
+
+ mpi_init( &T, &T1, &T2, NULL );
+
+ MPI_CHK( mpi_read_binary( &T, input, ctx->len ) );
+
+ if( mpi_cmp_mpi( &T, &ctx->N ) >= 0 )
+ {
+ mpi_free( &T, NULL );
+ return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
+ }
+
+#if 0
+ MPI_CHK( mpi_exp_mod( &T, &T, &ctx->D, &ctx->N, &ctx->RN ) );
+#else
+ /*
+ * faster decryption using the CRT
+ *
+ * T1 = input ^ dP mod P
+ * T2 = input ^ dQ mod Q
+ */
+ MPI_CHK( mpi_exp_mod( &T1, &T, &ctx->DP, &ctx->P, &ctx->RP ) );
+ MPI_CHK( mpi_exp_mod( &T2, &T, &ctx->DQ, &ctx->Q, &ctx->RQ ) );
+
+ /*
+ * T = (T1 - T2) * (Q^-1 mod P) mod P
+ */
+ MPI_CHK( mpi_sub_mpi( &T, &T1, &T2 ) );
+ MPI_CHK( mpi_mul_mpi( &T1, &T, &ctx->QP ) );
+ MPI_CHK( mpi_mod_mpi( &T, &T1, &ctx->P ) );
+
+ /*
+ * output = T2 + T * Q
+ */
+ MPI_CHK( mpi_mul_mpi( &T1, &T, &ctx->Q ) );
+ MPI_CHK( mpi_add_mpi( &T, &T2, &T1 ) );
+#endif
+
+ olen = ctx->len;
+ MPI_CHK( mpi_write_binary( &T, output, olen ) );
+
+cleanup:
+
+ mpi_free( &T, &T1, &T2, NULL );
+
+ if( ret != 0 )
+ return( POLARSSL_ERR_RSA_PRIVATE_FAILED | ret );
+
+ return( 0 );
+}
+
+/*
+ * Add the message padding, then do an RSA operation
+ */
+int rsa_pkcs1_encrypt( rsa_context *ctx,
+ int mode, int ilen,
+ unsigned char *input,
+ unsigned char *output )
+{
+ int nb_pad, olen;
+ unsigned char *p = output;
+
+ olen = ctx->len;
+
+ switch( ctx->padding )
+ {
+ case RSA_PKCS_V15:
+
+ if( ilen < 0 || olen < ilen + 11 )
+ return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
+
+ nb_pad = olen - 3 - ilen;
+
+ *p++ = 0;
+ *p++ = RSA_CRYPT;
+
+ while( nb_pad-- > 0 )
+ {
+ do {
+ *p = (unsigned char) rand();
+ } while( *p == 0 );
+ p++;
+ }
+ *p++ = 0;
+ memcpy( p, input, ilen );
+ break;
+
+ default:
+
+ return( POLARSSL_ERR_RSA_INVALID_PADDING );
+ }
+
+ return( ( mode == RSA_PUBLIC )
+ ? rsa_public( ctx, output, output )
+ : rsa_private( ctx, output, output ) );
+}
+
+/*
+ * Do an RSA operation, then remove the message padding
+ */
+int rsa_pkcs1_decrypt( rsa_context *ctx,
+ int mode, int *olen,
+ unsigned char *input,
+ unsigned char *output,
+ int output_max_len)
+{
+ int ret, ilen;
+ unsigned char *p;
+ unsigned char buf[512];
+
+ ilen = ctx->len;
+
+ if( ilen < 16 || ilen > (int) sizeof( buf ) )
+ return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
+
+ ret = ( mode == RSA_PUBLIC )
+ ? rsa_public( ctx, input, buf )
+ : rsa_private( ctx, input, buf );
+
+ if( ret != 0 )
+ return( ret );
+
+ p = buf;
+
+ switch( ctx->padding )
+ {
+ case RSA_PKCS_V15:
+
+ if( *p++ != 0 || *p++ != RSA_CRYPT )
+ return( POLARSSL_ERR_RSA_INVALID_PADDING );
+
+ while( *p != 0 )
+ {
+ if( p >= buf + ilen - 1 )
+ return( POLARSSL_ERR_RSA_INVALID_PADDING );
+ p++;
+ }
+ p++;
+ break;
+
+ default:
+
+ return( POLARSSL_ERR_RSA_INVALID_PADDING );
+ }
+
+ if (ilen - (int)(p - buf) > output_max_len)
+ return( POLARSSL_ERR_RSA_OUTPUT_TO_LARGE );
+
+ *olen = ilen - (int)(p - buf);
+ memcpy( output, p, *olen );
+
+ return( 0 );
+}
+
+/*
+ * Do an RSA operation to sign the message digest
+ */
+int rsa_pkcs1_sign( rsa_context *ctx,
+ int mode,
+ int hash_id,
+ int hashlen,
+ unsigned char *hash,
+ unsigned char *sig )
+{
+ int nb_pad, olen;
+ unsigned char *p = sig;
+
+ olen = ctx->len;
+
+ switch( ctx->padding )
+ {
+ case RSA_PKCS_V15:
+
+ switch( hash_id )
+ {
+ case RSA_RAW:
+ nb_pad = olen - 3 - hashlen;
+ break;
+
+ case RSA_MD2:
+ case RSA_MD4:
+ case RSA_MD5:
+ nb_pad = olen - 3 - 34;
+ break;
+
+ case RSA_SHA1:
+ nb_pad = olen - 3 - 35;
+ break;
+
+ default:
+ return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
+ }
+
+ if( nb_pad < 8 )
+ return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
+
+ *p++ = 0;
+ *p++ = RSA_SIGN;
+ memset( p, 0xFF, nb_pad );
+ p += nb_pad;
+ *p++ = 0;
+ break;
+
+ default:
+
+ return( POLARSSL_ERR_RSA_INVALID_PADDING );
+ }
+
+ switch( hash_id )
+ {
+ case RSA_RAW:
+ memcpy( p, hash, hashlen );
+ break;
+
+ case RSA_MD2:
+ memcpy( p, ASN1_HASH_MDX, 18 );
+ memcpy( p + 18, hash, 16 );
+ p[13] = 2; break;
+
+ case RSA_MD4:
+ memcpy( p, ASN1_HASH_MDX, 18 );
+ memcpy( p + 18, hash, 16 );
+ p[13] = 4; break;
+
+ case RSA_MD5:
+ memcpy( p, ASN1_HASH_MDX, 18 );
+ memcpy( p + 18, hash, 16 );
+ p[13] = 5; break;
+
+ case RSA_SHA1:
+ memcpy( p, ASN1_HASH_SHA1, 15 );
+ memcpy( p + 15, hash, 20 );
+ break;
+
+ default:
+ return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
+ }
+
+ return( ( mode == RSA_PUBLIC )
+ ? rsa_public( ctx, sig, sig )
+ : rsa_private( ctx, sig, sig ) );
+}
+
+/*
+ * Do an RSA operation and check the message digest
+ */
+int rsa_pkcs1_verify( rsa_context *ctx,
+ int mode,
+ int hash_id,
+ int hashlen,
+ unsigned char *hash,
+ unsigned char *sig )
+{
+ int ret, len, siglen;
+ unsigned char *p, c;
+ unsigned char buf[512];
+
+ siglen = ctx->len;
+
+ if( siglen < 16 || siglen > (int) sizeof( buf ) )
+ return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
+
+ ret = ( mode == RSA_PUBLIC )
+ ? rsa_public( ctx, sig, buf )
+ : rsa_private( ctx, sig, buf );
+
+ if( ret != 0 )
+ return( ret );
+
+ p = buf;
+
+ switch( ctx->padding )
+ {
+ case RSA_PKCS_V15:
+
+ if( *p++ != 0 || *p++ != RSA_SIGN )
+ return( POLARSSL_ERR_RSA_INVALID_PADDING );
+
+ while( *p != 0 )
+ {
+ if( p >= buf + siglen - 1 || *p != 0xFF )
+ return( POLARSSL_ERR_RSA_INVALID_PADDING );
+ p++;
+ }
+ p++;
+ break;
+
+ default:
+
+ return( POLARSSL_ERR_RSA_INVALID_PADDING );
+ }
+
+ len = siglen - (int)( p - buf );
+
+ if( len == 34 )
+ {
+ c = p[13];
+ p[13] = 0;
+
+ if( memcmp( p, ASN1_HASH_MDX, 18 ) != 0 )
+ return( POLARSSL_ERR_RSA_VERIFY_FAILED );
+
+ if( ( c == 2 && hash_id == RSA_MD2 ) ||
+ ( c == 4 && hash_id == RSA_MD4 ) ||
+ ( c == 5 && hash_id == RSA_MD5 ) )
+ {
+ if( memcmp( p + 18, hash, 16 ) == 0 )
+ return( 0 );
+ else
+ return( POLARSSL_ERR_RSA_VERIFY_FAILED );
+ }
+ }
+
+ if( len == 35 && hash_id == RSA_SHA1 )
+ {
+ if( memcmp( p, ASN1_HASH_SHA1, 15 ) == 0 &&
+ memcmp( p + 15, hash, 20 ) == 0 )
+ return( 0 );
+ else
+ return( POLARSSL_ERR_RSA_VERIFY_FAILED );
+ }
+
+ if( len == hashlen && hash_id == RSA_RAW )
+ {
+ if( memcmp( p, hash, hashlen ) == 0 )
+ return( 0 );
+ else
+ return( POLARSSL_ERR_RSA_VERIFY_FAILED );
+ }
+
+ return( POLARSSL_ERR_RSA_INVALID_PADDING );
+}
+
+/*
+ * Free the components of an RSA key
+ */
+void rsa_free( rsa_context *ctx )
+{
+ mpi_free( &ctx->RQ, &ctx->RP, &ctx->RN,
+ &ctx->QP, &ctx->DQ, &ctx->DP,
+ &ctx->Q, &ctx->P, &ctx->D,
+ &ctx->E, &ctx->N, NULL );
+}
+
+#if defined(POLARSSL_SELF_TEST)
+
+#include "polarssl/sha1.h"
+
+/*
+ * Example RSA-1024 keypair, for test purposes
+ */
+#define KEY_LEN 128
+
+#define RSA_N "9292758453063D803DD603D5E777D788" \
+ "8ED1D5BF35786190FA2F23EBC0848AEA" \
+ "DDA92CA6C3D80B32C4D109BE0F36D6AE" \
+ "7130B9CED7ACDF54CFC7555AC14EEBAB" \
+ "93A89813FBF3C4F8066D2D800F7C38A8" \
+ "1AE31942917403FF4946B0A83D3D3E05" \
+ "EE57C6F5F5606FB5D4BC6CD34EE0801A" \
+ "5E94BB77B07507233A0BC7BAC8F90F79"
+
+#define RSA_E "10001"
+
+#define RSA_D "24BF6185468786FDD303083D25E64EFC" \
+ "66CA472BC44D253102F8B4A9D3BFA750" \
+ "91386C0077937FE33FA3252D28855837" \
+ "AE1B484A8A9A45F7EE8C0C634F99E8CD" \
+ "DF79C5CE07EE72C7F123142198164234" \
+ "CABB724CF78B8173B9F880FC86322407" \
+ "AF1FEDFDDE2BEB674CA15F3E81A1521E" \
+ "071513A1E85B5DFA031F21ECAE91A34D"
+
+#define RSA_P "C36D0EB7FCD285223CFB5AABA5BDA3D8" \
+ "2C01CAD19EA484A87EA4377637E75500" \
+ "FCB2005C5C7DD6EC4AC023CDA285D796" \
+ "C3D9E75E1EFC42488BB4F1D13AC30A57"
+
+#define RSA_Q "C000DF51A7C77AE8D7C7370C1FF55B69" \
+ "E211C2B9E5DB1ED0BF61D0D9899620F4" \
+ "910E4168387E3C30AA1E00C339A79508" \
+ "8452DD96A9A5EA5D9DCA68DA636032AF"
+
+#define RSA_DP "C1ACF567564274FB07A0BBAD5D26E298" \
+ "3C94D22288ACD763FD8E5600ED4A702D" \
+ "F84198A5F06C2E72236AE490C93F07F8" \
+ "3CC559CD27BC2D1CA488811730BB5725"
+
+#define RSA_DQ "4959CBF6F8FEF750AEE6977C155579C7" \
+ "D8AAEA56749EA28623272E4F7D0592AF" \
+ "7C1F1313CAC9471B5C523BFE592F517B" \
+ "407A1BD76C164B93DA2D32A383E58357"
+
+#define RSA_QP "9AE7FBC99546432DF71896FC239EADAE" \
+ "F38D18D2B2F0E2DD275AA977E2BF4411" \
+ "F5A3B2A5D33605AEBBCCBA7FEB9F2D2F" \
+ "A74206CEC169D74BF5A8C50D6F48EA08"
+
+#define PT_LEN 24
+#define RSA_PT "\xAA\xBB\xCC\x03\x02\x01\x00\xFF\xFF\xFF\xFF\xFF" \
+ "\x11\x22\x33\x0A\x0B\x0C\xCC\xDD\xDD\xDD\xDD\xDD"
+
+/*
+ * Checkup routine
+ */
+int rsa_self_test( int verbose )
+{
+ int len;
+ rsa_context rsa;
+ unsigned char sha1sum[20];
+ unsigned char rsa_plaintext[PT_LEN];
+ unsigned char rsa_decrypted[PT_LEN];
+ unsigned char rsa_ciphertext[KEY_LEN];
+
+ memset( &rsa, 0, sizeof( rsa_context ) );
+
+ rsa.len = KEY_LEN;
+ mpi_read_string( &rsa.N , 16, RSA_N );
+ mpi_read_string( &rsa.E , 16, RSA_E );
+ mpi_read_string( &rsa.D , 16, RSA_D );
+ mpi_read_string( &rsa.P , 16, RSA_P );
+ mpi_read_string( &rsa.Q , 16, RSA_Q );
+ mpi_read_string( &rsa.DP, 16, RSA_DP );
+ mpi_read_string( &rsa.DQ, 16, RSA_DQ );
+ mpi_read_string( &rsa.QP, 16, RSA_QP );
+
+ if( verbose != 0 )
+ printf( " RSA key validation: " );
+
+ if( rsa_check_pubkey( &rsa ) != 0 ||
+ rsa_check_privkey( &rsa ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n PKCS#1 encryption : " );
+
+ memcpy( rsa_plaintext, RSA_PT, PT_LEN );
+
+ if( rsa_pkcs1_encrypt( &rsa, RSA_PUBLIC, PT_LEN,
+ rsa_plaintext, rsa_ciphertext ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n PKCS#1 decryption : " );
+
+ if( rsa_pkcs1_decrypt( &rsa, RSA_PRIVATE, &len,
+ rsa_ciphertext, rsa_decrypted,
+ sizeof(rsa_decrypted) ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( memcmp( rsa_decrypted, rsa_plaintext, len ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n PKCS#1 data sign : " );
+
+ sha1( rsa_plaintext, PT_LEN, sha1sum );
+
+ if( rsa_pkcs1_sign( &rsa, RSA_PRIVATE, RSA_SHA1, 20,
+ sha1sum, rsa_ciphertext ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n PKCS#1 sig. verify: " );
+
+ if( rsa_pkcs1_verify( &rsa, RSA_PUBLIC, RSA_SHA1, 20,
+ sha1sum, rsa_ciphertext ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n\n" );
+
+ rsa_free( &rsa );
+
+ return( 0 );
+}
+
+#endif
+
+#endif
diff --git a/package/px5g/src/library/sha1.c b/package/px5g/src/library/sha1.c
new file mode 100644
index 000000000..54a4416f3
--- /dev/null
+++ b/package/px5g/src/library/sha1.c
@@ -0,0 +1,622 @@
+/*
+ * FIPS-180-1 compliant SHA-1 implementation
+ *
+ * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
+ *
+ * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the names of PolarSSL or XySSL nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/*
+ * The SHA-1 standard was published by NIST in 1993.
+ *
+ * http://www.itl.nist.gov/fipspubs/fip180-1.htm
+ */
+
+#include "polarssl/config.h"
+
+#if defined(POLARSSL_SHA1_C)
+
+#include "polarssl/sha1.h"
+
+#include <string.h>
+#include <stdio.h>
+
+/*
+ * 32-bit integer manipulation macros (big endian)
+ */
+#ifndef GET_ULONG_BE
+#define GET_ULONG_BE(n,b,i) \
+{ \
+ (n) = ( (unsigned long) (b)[(i) ] << 24 ) \
+ | ( (unsigned long) (b)[(i) + 1] << 16 ) \
+ | ( (unsigned long) (b)[(i) + 2] << 8 ) \
+ | ( (unsigned long) (b)[(i) + 3] ); \
+}
+#endif
+
+#ifndef PUT_ULONG_BE
+#define PUT_ULONG_BE(n,b,i) \
+{ \
+ (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
+ (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
+ (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
+ (b)[(i) + 3] = (unsigned char) ( (n) ); \
+}
+#endif
+
+/*
+ * SHA-1 context setup
+ */
+void sha1_starts( sha1_context *ctx )
+{
+ ctx->total[0] = 0;
+ ctx->total[1] = 0;
+
+ ctx->state[0] = 0x67452301;
+ ctx->state[1] = 0xEFCDAB89;
+ ctx->state[2] = 0x98BADCFE;
+ ctx->state[3] = 0x10325476;
+ ctx->state[4] = 0xC3D2E1F0;
+}
+
+static void sha1_process( sha1_context *ctx, unsigned char data[64] )
+{
+ unsigned long temp, W[16], A, B, C, D, E;
+
+ GET_ULONG_BE( W[ 0], data, 0 );
+ GET_ULONG_BE( W[ 1], data, 4 );
+ GET_ULONG_BE( W[ 2], data, 8 );
+ GET_ULONG_BE( W[ 3], data, 12 );
+ GET_ULONG_BE( W[ 4], data, 16 );
+ GET_ULONG_BE( W[ 5], data, 20 );
+ GET_ULONG_BE( W[ 6], data, 24 );
+ GET_ULONG_BE( W[ 7], data, 28 );
+ GET_ULONG_BE( W[ 8], data, 32 );
+ GET_ULONG_BE( W[ 9], data, 36 );
+ GET_ULONG_BE( W[10], data, 40 );
+ GET_ULONG_BE( W[11], data, 44 );
+ GET_ULONG_BE( W[12], data, 48 );
+ GET_ULONG_BE( W[13], data, 52 );
+ GET_ULONG_BE( W[14], data, 56 );
+ GET_ULONG_BE( W[15], data, 60 );
+
+#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
+
+#define R(t) \
+( \
+ temp = W[(t - 3) & 0x0F] ^ W[(t - 8) & 0x0F] ^ \
+ W[(t - 14) & 0x0F] ^ W[ t & 0x0F], \
+ ( W[t & 0x0F] = S(temp,1) ) \
+)
+
+#define P(a,b,c,d,e,x) \
+{ \
+ e += S(a,5) + F(b,c,d) + K + x; b = S(b,30); \
+}
+
+ A = ctx->state[0];
+ B = ctx->state[1];
+ C = ctx->state[2];
+ D = ctx->state[3];
+ E = ctx->state[4];
+
+#define F(x,y,z) (z ^ (x & (y ^ z)))
+#define K 0x5A827999
+
+ P( A, B, C, D, E, W[0] );
+ P( E, A, B, C, D, W[1] );
+ P( D, E, A, B, C, W[2] );
+ P( C, D, E, A, B, W[3] );
+ P( B, C, D, E, A, W[4] );
+ P( A, B, C, D, E, W[5] );
+ P( E, A, B, C, D, W[6] );
+ P( D, E, A, B, C, W[7] );
+ P( C, D, E, A, B, W[8] );
+ P( B, C, D, E, A, W[9] );
+ P( A, B, C, D, E, W[10] );
+ P( E, A, B, C, D, W[11] );
+ P( D, E, A, B, C, W[12] );
+ P( C, D, E, A, B, W[13] );
+ P( B, C, D, E, A, W[14] );
+ P( A, B, C, D, E, W[15] );
+ P( E, A, B, C, D, R(16) );
+ P( D, E, A, B, C, R(17) );
+ P( C, D, E, A, B, R(18) );
+ P( B, C, D, E, A, R(19) );
+
+#undef K
+#undef F
+
+#define F(x,y,z) (x ^ y ^ z)
+#define K 0x6ED9EBA1
+
+ P( A, B, C, D, E, R(20) );
+ P( E, A, B, C, D, R(21) );
+ P( D, E, A, B, C, R(22) );
+ P( C, D, E, A, B, R(23) );
+ P( B, C, D, E, A, R(24) );
+ P( A, B, C, D, E, R(25) );
+ P( E, A, B, C, D, R(26) );
+ P( D, E, A, B, C, R(27) );
+ P( C, D, E, A, B, R(28) );
+ P( B, C, D, E, A, R(29) );
+ P( A, B, C, D, E, R(30) );
+ P( E, A, B, C, D, R(31) );
+ P( D, E, A, B, C, R(32) );
+ P( C, D, E, A, B, R(33) );
+ P( B, C, D, E, A, R(34) );
+ P( A, B, C, D, E, R(35) );
+ P( E, A, B, C, D, R(36) );
+ P( D, E, A, B, C, R(37) );
+ P( C, D, E, A, B, R(38) );
+ P( B, C, D, E, A, R(39) );
+
+#undef K
+#undef F
+
+#define F(x,y,z) ((x & y) | (z & (x | y)))
+#define K 0x8F1BBCDC
+
+ P( A, B, C, D, E, R(40) );
+ P( E, A, B, C, D, R(41) );
+ P( D, E, A, B, C, R(42) );
+ P( C, D, E, A, B, R(43) );
+ P( B, C, D, E, A, R(44) );
+ P( A, B, C, D, E, R(45) );
+ P( E, A, B, C, D, R(46) );
+ P( D, E, A, B, C, R(47) );
+ P( C, D, E, A, B, R(48) );
+ P( B, C, D, E, A, R(49) );
+ P( A, B, C, D, E, R(50) );
+ P( E, A, B, C, D, R(51) );
+ P( D, E, A, B, C, R(52) );
+ P( C, D, E, A, B, R(53) );
+ P( B, C, D, E, A, R(54) );
+ P( A, B, C, D, E, R(55) );
+ P( E, A, B, C, D, R(56) );
+ P( D, E, A, B, C, R(57) );
+ P( C, D, E, A, B, R(58) );
+ P( B, C, D, E, A, R(59) );
+
+#undef K
+#undef F
+
+#define F(x,y,z) (x ^ y ^ z)
+#define K 0xCA62C1D6
+
+ P( A, B, C, D, E, R(60) );
+ P( E, A, B, C, D, R(61) );
+ P( D, E, A, B, C, R(62) );
+ P( C, D, E, A, B, R(63) );
+ P( B, C, D, E, A, R(64) );
+ P( A, B, C, D, E, R(65) );
+ P( E, A, B, C, D, R(66) );
+ P( D, E, A, B, C, R(67) );
+ P( C, D, E, A, B, R(68) );
+ P( B, C, D, E, A, R(69) );
+ P( A, B, C, D, E, R(70) );
+ P( E, A, B, C, D, R(71) );
+ P( D, E, A, B, C, R(72) );
+ P( C, D, E, A, B, R(73) );
+ P( B, C, D, E, A, R(74) );
+ P( A, B, C, D, E, R(75) );
+ P( E, A, B, C, D, R(76) );
+ P( D, E, A, B, C, R(77) );
+ P( C, D, E, A, B, R(78) );
+ P( B, C, D, E, A, R(79) );
+
+#undef K
+#undef F
+
+ ctx->state[0] += A;
+ ctx->state[1] += B;
+ ctx->state[2] += C;
+ ctx->state[3] += D;
+ ctx->state[4] += E;
+}
+
+/*
+ * SHA-1 process buffer
+ */
+void sha1_update( sha1_context *ctx, unsigned char *input, int ilen )
+{
+ int fill;
+ unsigned long left;
+
+ if( ilen <= 0 )
+ return;
+
+ left = ctx->total[0] & 0x3F;
+ fill = 64 - left;
+
+ ctx->total[0] += ilen;
+ ctx->total[0] &= 0xFFFFFFFF;
+
+ if( ctx->total[0] < (unsigned long) ilen )
+ ctx->total[1]++;
+
+ if( left && ilen >= fill )
+ {
+ memcpy( (void *) (ctx->buffer + left),
+ (void *) input, fill );
+ sha1_process( ctx, ctx->buffer );
+ input += fill;
+ ilen -= fill;
+ left = 0;
+ }
+
+ while( ilen >= 64 )
+ {
+ sha1_process( ctx, input );
+ input += 64;
+ ilen -= 64;
+ }
+
+ if( ilen > 0 )
+ {
+ memcpy( (void *) (ctx->buffer + left),
+ (void *) input, ilen );
+ }
+}
+
+static const unsigned char sha1_padding[64] =
+{
+ 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/*
+ * SHA-1 final digest
+ */
+void sha1_finish( sha1_context *ctx, unsigned char output[20] )
+{
+ unsigned long last, padn;
+ unsigned long high, low;
+ unsigned char msglen[8];
+
+ high = ( ctx->total[0] >> 29 )
+ | ( ctx->total[1] << 3 );
+ low = ( ctx->total[0] << 3 );
+
+ PUT_ULONG_BE( high, msglen, 0 );
+ PUT_ULONG_BE( low, msglen, 4 );
+
+ last = ctx->total[0] & 0x3F;
+ padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
+
+ sha1_update( ctx, (unsigned char *) sha1_padding, padn );
+ sha1_update( ctx, msglen, 8 );
+
+ PUT_ULONG_BE( ctx->state[0], output, 0 );
+ PUT_ULONG_BE( ctx->state[1], output, 4 );
+ PUT_ULONG_BE( ctx->state[2], output, 8 );
+ PUT_ULONG_BE( ctx->state[3], output, 12 );
+ PUT_ULONG_BE( ctx->state[4], output, 16 );
+}
+
+/*
+ * output = SHA-1( input buffer )
+ */
+void sha1( unsigned char *input, int ilen, unsigned char output[20] )
+{
+ sha1_context ctx;
+
+ sha1_starts( &ctx );
+ sha1_update( &ctx, input, ilen );
+ sha1_finish( &ctx, output );
+
+ memset( &ctx, 0, sizeof( sha1_context ) );
+}
+
+/*
+ * output = SHA-1( file contents )
+ */
+int sha1_file( char *path, unsigned char output[20] )
+{
+ FILE *f;
+ size_t n;
+ sha1_context ctx;
+ unsigned char buf[1024];
+
+ if( ( f = fopen( path, "rb" ) ) == NULL )
+ return( 1 );
+
+ sha1_starts( &ctx );
+
+ while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
+ sha1_update( &ctx, buf, (int) n );
+
+ sha1_finish( &ctx, output );
+
+ memset( &ctx, 0, sizeof( sha1_context ) );
+
+ if( ferror( f ) != 0 )
+ {
+ fclose( f );
+ return( 2 );
+ }
+
+ fclose( f );
+ return( 0 );
+}
+
+/*
+ * SHA-1 HMAC context setup
+ */
+void sha1_hmac_starts( sha1_context *ctx, unsigned char *key, int keylen )
+{
+ int i;
+ unsigned char sum[20];
+
+ if( keylen > 64 )
+ {
+ sha1( key, keylen, sum );
+ keylen = 20;
+ key = sum;
+ }
+
+ memset( ctx->ipad, 0x36, 64 );
+ memset( ctx->opad, 0x5C, 64 );
+
+ for( i = 0; i < keylen; i++ )
+ {
+ ctx->ipad[i] = (unsigned char)( ctx->ipad[i] ^ key[i] );
+ ctx->opad[i] = (unsigned char)( ctx->opad[i] ^ key[i] );
+ }
+
+ sha1_starts( ctx );
+ sha1_update( ctx, ctx->ipad, 64 );
+
+ memset( sum, 0, sizeof( sum ) );
+}
+
+/*
+ * SHA-1 HMAC process buffer
+ */
+void sha1_hmac_update( sha1_context *ctx, unsigned char *input, int ilen )
+{
+ sha1_update( ctx, input, ilen );
+}
+
+/*
+ * SHA-1 HMAC final digest
+ */
+void sha1_hmac_finish( sha1_context *ctx, unsigned char output[20] )
+{
+ unsigned char tmpbuf[20];
+
+ sha1_finish( ctx, tmpbuf );
+ sha1_starts( ctx );
+ sha1_update( ctx, ctx->opad, 64 );
+ sha1_update( ctx, tmpbuf, 20 );
+ sha1_finish( ctx, output );
+
+ memset( tmpbuf, 0, sizeof( tmpbuf ) );
+}
+
+/*
+ * output = HMAC-SHA-1( hmac key, input buffer )
+ */
+void sha1_hmac( unsigned char *key, int keylen,
+ unsigned char *input, int ilen,
+ unsigned char output[20] )
+{
+ sha1_context ctx;
+
+ sha1_hmac_starts( &ctx, key, keylen );
+ sha1_hmac_update( &ctx, input, ilen );
+ sha1_hmac_finish( &ctx, output );
+
+ memset( &ctx, 0, sizeof( sha1_context ) );
+}
+
+#if defined(POLARSSL_SELF_TEST)
+/*
+ * FIPS-180-1 test vectors
+ */
+static unsigned char sha1_test_buf[3][57] =
+{
+ { "abc" },
+ { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" },
+ { "" }
+};
+
+static const int sha1_test_buflen[3] =
+{
+ 3, 56, 1000
+};
+
+static const unsigned char sha1_test_sum[3][20] =
+{
+ { 0xA9, 0x99, 0x3E, 0x36, 0x47, 0x06, 0x81, 0x6A, 0xBA, 0x3E,
+ 0x25, 0x71, 0x78, 0x50, 0xC2, 0x6C, 0x9C, 0xD0, 0xD8, 0x9D },
+ { 0x84, 0x98, 0x3E, 0x44, 0x1C, 0x3B, 0xD2, 0x6E, 0xBA, 0xAE,
+ 0x4A, 0xA1, 0xF9, 0x51, 0x29, 0xE5, 0xE5, 0x46, 0x70, 0xF1 },
+ { 0x34, 0xAA, 0x97, 0x3C, 0xD4, 0xC4, 0xDA, 0xA4, 0xF6, 0x1E,
+ 0xEB, 0x2B, 0xDB, 0xAD, 0x27, 0x31, 0x65, 0x34, 0x01, 0x6F }
+};
+
+/*
+ * RFC 2202 test vectors
+ */
+static unsigned char sha1_hmac_test_key[7][26] =
+{
+ { "\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B"
+ "\x0B\x0B\x0B\x0B" },
+ { "Jefe" },
+ { "\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
+ "\xAA\xAA\xAA\xAA" },
+ { "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F\x10"
+ "\x11\x12\x13\x14\x15\x16\x17\x18\x19" },
+ { "\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C"
+ "\x0C\x0C\x0C\x0C" },
+ { "" }, /* 0xAA 80 times */
+ { "" }
+};
+
+static const int sha1_hmac_test_keylen[7] =
+{
+ 20, 4, 20, 25, 20, 80, 80
+};
+
+static unsigned char sha1_hmac_test_buf[7][74] =
+{
+ { "Hi There" },
+ { "what do ya want for nothing?" },
+ { "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+ "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+ "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+ "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+ "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD" },
+ { "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
+ "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
+ "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
+ "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
+ "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD" },
+ { "Test With Truncation" },
+ { "Test Using Larger Than Block-Size Key - Hash Key First" },
+ { "Test Using Larger Than Block-Size Key and Larger"
+ " Than One Block-Size Data" }
+};
+
+static const int sha1_hmac_test_buflen[7] =
+{
+ 8, 28, 50, 50, 20, 54, 73
+};
+
+static const unsigned char sha1_hmac_test_sum[7][20] =
+{
+ { 0xB6, 0x17, 0x31, 0x86, 0x55, 0x05, 0x72, 0x64, 0xE2, 0x8B,
+ 0xC0, 0xB6, 0xFB, 0x37, 0x8C, 0x8E, 0xF1, 0x46, 0xBE, 0x00 },
+ { 0xEF, 0xFC, 0xDF, 0x6A, 0xE5, 0xEB, 0x2F, 0xA2, 0xD2, 0x74,
+ 0x16, 0xD5, 0xF1, 0x84, 0xDF, 0x9C, 0x25, 0x9A, 0x7C, 0x79 },
+ { 0x12, 0x5D, 0x73, 0x42, 0xB9, 0xAC, 0x11, 0xCD, 0x91, 0xA3,
+ 0x9A, 0xF4, 0x8A, 0xA1, 0x7B, 0x4F, 0x63, 0xF1, 0x75, 0xD3 },
+ { 0x4C, 0x90, 0x07, 0xF4, 0x02, 0x62, 0x50, 0xC6, 0xBC, 0x84,
+ 0x14, 0xF9, 0xBF, 0x50, 0xC8, 0x6C, 0x2D, 0x72, 0x35, 0xDA },
+ { 0x4C, 0x1A, 0x03, 0x42, 0x4B, 0x55, 0xE0, 0x7F, 0xE7, 0xF2,
+ 0x7B, 0xE1 },
+ { 0xAA, 0x4A, 0xE5, 0xE1, 0x52, 0x72, 0xD0, 0x0E, 0x95, 0x70,
+ 0x56, 0x37, 0xCE, 0x8A, 0x3B, 0x55, 0xED, 0x40, 0x21, 0x12 },
+ { 0xE8, 0xE9, 0x9D, 0x0F, 0x45, 0x23, 0x7D, 0x78, 0x6D, 0x6B,
+ 0xBA, 0xA7, 0x96, 0x5C, 0x78, 0x08, 0xBB, 0xFF, 0x1A, 0x91 }
+};
+
+/*
+ * Checkup routine
+ */
+int sha1_self_test( int verbose )
+{
+ int i, j, buflen;
+ unsigned char buf[1024];
+ unsigned char sha1sum[20];
+ sha1_context ctx;
+
+ /*
+ * SHA-1
+ */
+ for( i = 0; i < 3; i++ )
+ {
+ if( verbose != 0 )
+ printf( " SHA-1 test #%d: ", i + 1 );
+
+ sha1_starts( &ctx );
+
+ if( i == 2 )
+ {
+ memset( buf, 'a', buflen = 1000 );
+
+ for( j = 0; j < 1000; j++ )
+ sha1_update( &ctx, buf, buflen );
+ }
+ else
+ sha1_update( &ctx, sha1_test_buf[i],
+ sha1_test_buflen[i] );
+
+ sha1_finish( &ctx, sha1sum );
+
+ if( memcmp( sha1sum, sha1_test_sum[i], 20 ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n" );
+ }
+
+ if( verbose != 0 )
+ printf( "\n" );
+
+ for( i = 0; i < 7; i++ )
+ {
+ if( verbose != 0 )
+ printf( " HMAC-SHA-1 test #%d: ", i + 1 );
+
+ if( i == 5 || i == 6 )
+ {
+ memset( buf, '\xAA', buflen = 80 );
+ sha1_hmac_starts( &ctx, buf, buflen );
+ }
+ else
+ sha1_hmac_starts( &ctx, sha1_hmac_test_key[i],
+ sha1_hmac_test_keylen[i] );
+
+ sha1_hmac_update( &ctx, sha1_hmac_test_buf[i],
+ sha1_hmac_test_buflen[i] );
+
+ sha1_hmac_finish( &ctx, sha1sum );
+
+ buflen = ( i == 4 ) ? 12 : 20;
+
+ if( memcmp( sha1sum, sha1_hmac_test_sum[i], buflen ) != 0 )
+ {
+ if( verbose != 0 )
+ printf( "failed\n" );
+
+ return( 1 );
+ }
+
+ if( verbose != 0 )
+ printf( "passed\n" );
+ }
+
+ if( verbose != 0 )
+ printf( "\n" );
+
+ return( 0 );
+}
+
+#endif
+
+#endif
diff --git a/package/px5g/src/library/timing.c b/package/px5g/src/library/timing.c
new file mode 100644
index 000000000..6b7ab740e
--- /dev/null
+++ b/package/px5g/src/library/timing.c
@@ -0,0 +1,265 @@
+/*
+ * Portable interface to the CPU cycle counter
+ *
+ * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
+ *
+ * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the names of PolarSSL or XySSL nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "polarssl/config.h"
+
+#if defined(POLARSSL_TIMING_C)
+
+#include "polarssl/timing.h"
+
+#if defined(WIN32)
+
+#include <windows.h>
+#include <winbase.h>
+
+struct _hr_time
+{
+ LARGE_INTEGER start;
+};
+
+#else
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <signal.h>
+#include <time.h>
+
+struct _hr_time
+{
+ struct timeval start;
+};
+
+#endif
+
+#if (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
+
+unsigned long hardclock( void )
+{
+ unsigned long tsc;
+ __asm rdtsc
+ __asm mov [tsc], eax
+ return( tsc );
+}
+
+#else
+#if defined(__GNUC__) && defined(__i386__)
+
+unsigned long hardclock( void )
+{
+ unsigned long tsc;
+ asm( "rdtsc" : "=a" (tsc) );
+ return( tsc );
+}
+
+#else
+#if defined(__GNUC__) && (defined(__amd64__) || defined(__x86_64__))
+
+unsigned long hardclock( void )
+{
+ unsigned long lo, hi;
+ asm( "rdtsc" : "=a" (lo), "=d" (hi) );
+ return( lo | (hi << 32) );
+}
+
+#else
+#if defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
+
+unsigned long hardclock( void )
+{
+ unsigned long tbl, tbu0, tbu1;
+
+ do
+ {
+ asm( "mftbu %0" : "=r" (tbu0) );
+ asm( "mftb %0" : "=r" (tbl ) );
+ asm( "mftbu %0" : "=r" (tbu1) );
+ }
+ while( tbu0 != tbu1 );
+
+ return( tbl );
+}
+
+#else
+#if defined(__GNUC__) && defined(__sparc__)
+
+unsigned long hardclock( void )
+{
+ unsigned long tick;
+ asm( ".byte 0x83, 0x41, 0x00, 0x00" );
+ asm( "mov %%g1, %0" : "=r" (tick) );
+ return( tick );
+}
+
+#else
+#if defined(__GNUC__) && defined(__alpha__)
+
+unsigned long hardclock( void )
+{
+ unsigned long cc;
+ asm( "rpcc %0" : "=r" (cc) );
+ return( cc & 0xFFFFFFFF );
+}
+
+#else
+#if defined(__GNUC__) && defined(__ia64__)
+
+unsigned long hardclock( void )
+{
+ unsigned long itc;
+ asm( "mov %0 = ar.itc" : "=r" (itc) );
+ return( itc );
+}
+
+#else
+
+static int hardclock_init = 0;
+static struct timeval tv_init;
+
+unsigned long hardclock( void )
+{
+ struct timeval tv_cur;
+
+ if( hardclock_init == 0 )
+ {
+ gettimeofday( &tv_init, NULL );
+ hardclock_init = 1;
+ }
+
+ gettimeofday( &tv_cur, NULL );
+ return( ( tv_cur.tv_sec - tv_init.tv_sec ) * 1000000
+ + ( tv_cur.tv_usec - tv_init.tv_usec ) );
+}
+
+#endif /* generic */
+#endif /* IA-64 */
+#endif /* Alpha */
+#endif /* SPARC8 */
+#endif /* PowerPC */
+#endif /* AMD64 */
+#endif /* i586+ */
+
+int alarmed = 0;
+
+#if defined(WIN32)
+
+unsigned long get_timer( struct hr_time *val, int reset )
+{
+ unsigned long delta;
+ LARGE_INTEGER offset, hfreq;
+ struct _hr_time *t = (struct _hr_time *) val;
+
+ QueryPerformanceCounter( &offset );
+ QueryPerformanceFrequency( &hfreq );
+
+ delta = (unsigned long)( ( 1000 *
+ ( offset.QuadPart - t->start.QuadPart ) ) /
+ hfreq.QuadPart );
+
+ if( reset )
+ QueryPerformanceCounter( &t->start );
+
+ return( delta );
+}
+
+DWORD WINAPI TimerProc( LPVOID uElapse )
+{
+ Sleep( (DWORD) uElapse );
+ alarmed = 1;
+ return( TRUE );
+}
+
+void set_alarm( int seconds )
+{
+ DWORD ThreadId;
+
+ alarmed = 0;
+ CloseHandle( CreateThread( NULL, 0, TimerProc,
+ (LPVOID) ( seconds * 1000 ), 0, &ThreadId ) );
+}
+
+void m_sleep( int milliseconds )
+{
+ Sleep( milliseconds );
+}
+
+#else
+
+unsigned long get_timer( struct hr_time *val, int reset )
+{
+ unsigned long delta;
+ struct timeval offset;
+ struct _hr_time *t = (struct _hr_time *) val;
+
+ gettimeofday( &offset, NULL );
+
+ delta = ( offset.tv_sec - t->start.tv_sec ) * 1000
+ + ( offset.tv_usec - t->start.tv_usec ) / 1000;
+
+ if( reset )
+ {
+ t->start.tv_sec = offset.tv_sec;
+ t->start.tv_usec = offset.tv_usec;
+ }
+
+ return( delta );
+}
+
+static void sighandler( int signum )
+{
+ alarmed = 1;
+ signal( signum, sighandler );
+}
+
+void set_alarm( int seconds )
+{
+ alarmed = 0;
+ signal( SIGALRM, sighandler );
+ alarm( seconds );
+}
+
+void m_sleep( int milliseconds )
+{
+ struct timeval tv;
+
+ tv.tv_sec = milliseconds / 1000;
+ tv.tv_usec = milliseconds * 1000;
+
+ select( 0, NULL, NULL, NULL, &tv );
+}
+
+#endif
+
+#endif
diff --git a/package/px5g/src/library/x509write.c b/package/px5g/src/library/x509write.c
new file mode 100644
index 000000000..fabee20ea
--- /dev/null
+++ b/package/px5g/src/library/x509write.c
@@ -0,0 +1,1139 @@
+/*
+ * X.509 certificate and private key writing
+ *
+ * Copyright (C) 2006-2007 Pascal Vizeli <pvizeli@yahoo.de>
+ * Modifications (C) 2009 Steven Barth <steven@midlink.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1 as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+/*
+ * The ITU-T X.509 standard defines a certificat format for PKI.
+ *
+ * http://www.ietf.org/rfc/rfc2459.txt
+ * http://www.ietf.org/rfc/rfc3279.txt
+ *
+ * ftp://ftp.rsasecurity.com/pub/pkcs/ascii/pkcs-1v2.asc
+ *
+ * http://www.itu.int/ITU-T/studygroups/com17/languages/X.680-0207.pdf
+ * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
+ *
+ * For CRS:
+ * http://www.faqs.org/rfcs/rfc2314.html
+ */
+#include "polarssl/config.h"
+#include "polarssl/x509.h"
+#include "polarssl/base64.h"
+#include "polarssl/sha1.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <time.h>
+
+#define and &&
+#define or ||
+
+#if defined _MSC_VER && !defined snprintf
+#define snprintf _snprintf
+#endif
+
+static int x509write_realloc_node(x509_node *node, size_t larger);
+static int x509write_file(x509_node *node, char *path, int format, const char* pem_prolog, const char* pem_epilog);
+
+/*
+ * evaluate how mani octet have this integer
+ */
+static int asn1_eval_octet(unsigned int digit)
+{
+ int i, byte;
+
+ for (byte = 4, i = 24; i >= 0; i -= 8, --byte)
+ if (((digit >> i) & 0xFF) != 0)
+ return byte;
+
+ return 0;
+}
+
+/*
+ * write the asn.1 lenght form into p
+ */
+static int asn1_add_len(unsigned int size, x509_node *node)
+{
+ if (size > 127) {
+
+ /* long size */
+ int byte = asn1_eval_octet(size);
+ int i = 0;
+
+ *(node->p) = (0x80 | byte) & 0xFF;
+ ++node->p;
+
+ for (i = byte; i > 0; --i) {
+
+ *(node->p) = (size >> ((i - 1) * 8)) & 0xFF;
+ ++node->p;
+ }
+
+ } else {
+
+ /* short size */
+ *(node->p) = size & 0xFF;
+ if (size != 0)
+ ++node->p;
+ }
+
+ return 0;
+}
+
+/*
+ * write a ans.1 object into p
+ */
+static int asn1_add_obj(unsigned char *value, unsigned int size, int tag,
+ x509_node *node)
+{
+ int tl = 2;
+
+ if (tag == ASN1_BIT_STRING)
+ ++tl;
+
+ if (size > 127)
+ x509write_realloc_node(node, (size_t) size + tl +
+ asn1_eval_octet(size));
+ else
+ x509write_realloc_node(node, (size_t) size + tl);
+
+ if (node->data == NULL)
+ return 1;
+
+ /* tag */
+ *(node->p) = tag & 0xFF;
+ ++node->p;
+
+ /* len */
+ if (tag == ASN1_BIT_STRING) {
+ asn1_add_len((unsigned int) size + 1, node);
+ *(node->p) = 0x00;
+ ++node->p;
+ } else {
+ asn1_add_len((unsigned int) size, node);
+ }
+
+ /* value */
+ if (size > 0) {
+
+ memcpy(node->p, value, (size_t) size);
+ if ((node->p += size -1) != node->end)
+ return POLARSSL_ERR_X509_POINT_ERROR;
+ } else {
+ /* make nothing -> NULL */
+ }
+
+ return 0;
+}
+
+/*
+ * write a asn.1 conform integer object
+ */
+static int asn1_add_int(signed int value, x509_node *node)
+{
+ signed int i = 0, neg = 1;
+ unsigned int byte, u_val = 0, tmp_val = 0;
+
+ /* if negate? */
+ if (value < 0) {
+ neg = -1;
+ u_val = ~value;
+ } else {
+ u_val = value;
+ }
+
+ byte = asn1_eval_octet(u_val);
+ /* 0 isn't NULL */
+ if (byte == 0)
+ byte = 1;
+
+ /* ASN.1 integer is signed! */
+ if (byte < 4 and ((u_val >> ((byte -1) * 8)) & 0xFF) == 0x80)
+ byte += 1;
+
+ if (x509write_realloc_node(node, (size_t) byte + 2) != 0)
+ return 1;
+
+ /* tag */
+ *(node->p) = ASN1_INTEGER;
+ ++node->p;
+
+ /* len */
+ asn1_add_len(byte, node);
+
+ /* value */
+ for (i = byte; i > 0; --i) {
+
+ tmp_val = (u_val >> ((i - 1) * 8)) & 0xFF;
+ if (neg == 1)
+ *(node->p) = tmp_val;
+ else
+ *(node->p) = ~tmp_val;
+
+ if (i > 1)
+ ++node->p;
+ }
+
+ if (node->p != node->end)
+ return POLARSSL_ERR_X509_POINT_ERROR;
+
+ return 0;
+}
+
+/*
+ * write a asn.1 conform mpi object
+ */
+static int asn1_add_mpi(mpi *value, int tag, x509_node *node)
+{
+ size_t size = (mpi_msb(value) / 8) + 1;
+ unsigned char *buf;
+ int buf_len = (int) size, tl = 2;
+
+ if (tag == ASN1_BIT_STRING)
+ ++tl;
+
+ if (size > 127)
+ x509write_realloc_node(node, size + (size_t) tl +
+ asn1_eval_octet((unsigned int)size));
+ else
+ x509write_realloc_node(node, size + (size_t) tl);
+
+ if (node->data == NULL)
+ return 1;
+
+ buf = (unsigned char*) malloc(size);
+ if (mpi_write_binary(value, buf, buf_len) != 0)
+ return POLARSSL_ERR_MPI_BUFFER_TOO_SMALL;
+
+ /* tag */
+ *(node->p) = tag & 0xFF;
+ ++node->p;
+
+ /* len */
+ if (tag == ASN1_BIT_STRING) {
+ asn1_add_len((unsigned int) size + 1, node);
+ *(node->p) = 0x00;
+ ++node->p;
+ } else {
+ asn1_add_len((unsigned int) size, node);
+ }
+
+ /* value */
+ memcpy(node->p, buf, size);
+ free(buf);
+
+ if ((node->p += (int) size -1) != node->end)
+ return POLARSSL_ERR_X509_POINT_ERROR;
+
+ return 0;
+}
+
+/*
+ * write a node into asn.1 conform object
+ */
+static int asn1_append_tag(x509_node *node, int tag)
+{
+ int tl = 2;
+
+ x509_node tmp;
+ x509write_init_node(&tmp);
+
+ if (tag == ASN1_BIT_STRING)
+ ++tl;
+
+ if (node->len > 127)
+ x509write_realloc_node(&tmp, node->len + (size_t) tl +
+ asn1_eval_octet((unsigned int)node->len));
+ else
+ x509write_realloc_node(&tmp, node->len + (size_t) tl);
+
+ if (tmp.data == NULL) {
+ x509write_free_node(&tmp);
+ return 1;
+ }
+
+ /* tag */
+ *(tmp.p) = tag & 0xFF;
+ ++tmp.p;
+
+ /* len */
+ if (tag == ASN1_BIT_STRING) {
+ asn1_add_len((unsigned int) node->len + 1, &tmp);
+ *(tmp.p) = 0x00;
+ ++tmp.p;
+ } else {
+ asn1_add_len((unsigned int) node->len, &tmp);
+ }
+
+ /* value */
+ memcpy(tmp.p, node->data, node->len);
+
+ /* good? */
+ if ((tmp.p += (int) node->len -1) != tmp.end) {
+ x509write_free_node(&tmp);
+ return POLARSSL_ERR_X509_POINT_ERROR;
+ }
+
+ free(node->data);
+ node->data = tmp.data;
+ node->p = tmp.p;
+ node->end = tmp.end;
+ node->len = tmp.len;
+
+ return 0;
+}
+
+/*
+ * write nodes into a asn.1 object
+ */
+static int asn1_append_nodes(x509_node *node, int tag, int anz, ...)
+{
+ va_list ap;
+ size_t size = 0;
+ x509_node *tmp;
+ int count;
+
+ va_start(ap, anz);
+ count = anz;
+
+ while (count--) {
+
+ tmp = va_arg(ap, x509_node*);
+ if (tmp->data != NULL)
+ size += tmp->len;
+ }
+
+ if ( size > 127) {
+ if (x509write_realloc_node(node, size + (size_t) 2 +
+ asn1_eval_octet(size)) != 0)
+ return 1;
+ } else {
+ if (x509write_realloc_node(node, size + (size_t) 2) != 0)
+ return 1;
+ }
+
+ /* tag */
+ *(node->p) = tag & 0xFF;
+ ++node->p;
+
+ /* len */
+ asn1_add_len(size, node);
+
+ /* value */
+ va_start(ap, anz);
+ count = anz;
+
+ while (count--) {
+
+ tmp = va_arg(ap, x509_node*);
+ if (tmp->data != NULL) {
+
+ memcpy(node->p, tmp->data, tmp->len);
+ if ((node->p += (int) tmp->len -1) != node->end)
+ ++node->p;
+ }
+ }
+
+ va_end(ap);
+ return 0;
+}
+
+/*
+ * write a ASN.1 conform object identifiere include a "tag"
+ */
+static int asn1_add_oid(x509_node *node, unsigned char *oid, size_t len,
+ int tag, int tag_val, unsigned char *value, size_t val_len)
+{
+ int ret;
+ x509_node tmp;
+
+ x509write_init_node(&tmp);
+
+ /* OBJECT IDENTIFIER */
+ if ((ret = asn1_add_obj(oid, len, ASN1_OID, &tmp)) != 0) {
+ x509write_free_node(&tmp);
+ return ret;
+ }
+
+ /* value */
+ if ((ret = asn1_add_obj(value, val_len, tag_val, &tmp)) != 0) {
+ x509write_free_node(&tmp);
+ return ret;
+ }
+
+ /* SET/SEQUENCE */
+ if ((ret = asn1_append_nodes(node, tag, 1, &tmp)) != 0) {
+ x509write_free_node(&tmp);
+ return ret;
+ }
+
+ x509write_free_node(&tmp);
+ return 0;
+}
+
+/*
+ * utcTime UTCTime
+ */
+static int asn1_add_date_utc(unsigned char *time, x509_node *node)
+{
+ unsigned char date[13], *sp;
+ x509_time xtime;
+ int ret;
+
+ sscanf((char*)time, "%d-%d-%d %d:%d:%d", &xtime.year, &xtime.mon,
+ &xtime.day, &xtime.hour, &xtime.min, &xtime.sec);
+
+ /* convert to YY */
+ if (xtime.year > 2000)
+ xtime.year -= 2000;
+ else
+ xtime.year -= 1900;
+
+ snprintf((char*)date, 13, "%2d%2d%2d%2d%2d%2d", xtime.year, xtime.mon, xtime.day,
+ xtime.hour, xtime.min, xtime.sec);
+
+ /* replace ' ' to '0' */
+ for (sp = date; *sp != '\0'; ++sp)
+ if (*sp == '\x20')
+ *sp = '\x30';
+
+ date[12] = 'Z';
+
+ if ((ret = asn1_add_obj(date, 13, ASN1_UTC_TIME, node)) != 0)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * serialize an rsa key into DER
+ */
+
+int x509write_serialize_key(rsa_context *rsa, x509_node *node)
+{
+ int ret = 0;
+ x509write_init_node(node);
+
+ /* vers, n, e, d, p, q, dp, dq, pq */
+ if ((ret = asn1_add_int(rsa->ver, node)) != 0)
+ return ret;
+ if ((ret = asn1_add_mpi(&rsa->N, ASN1_INTEGER, node)) != 0)
+ return ret;
+ if ((ret = asn1_add_mpi(&rsa->E, ASN1_INTEGER, node)) != 0)
+ return ret;
+ if ((ret = asn1_add_mpi(&rsa->D, ASN1_INTEGER, node)) != 0)
+ return ret;
+ if ((ret = asn1_add_mpi(&rsa->P, ASN1_INTEGER, node)) != 0)
+ return ret;
+ if ((ret = asn1_add_mpi(&rsa->Q, ASN1_INTEGER, node)) != 0)
+ return ret;
+ if ((ret = asn1_add_mpi(&rsa->DP, ASN1_INTEGER, node)) != 0)
+ return ret;
+ if ((ret = asn1_add_mpi(&rsa->DQ, ASN1_INTEGER, node)) != 0)
+ return ret;
+ if ((ret = asn1_add_mpi(&rsa->QP, ASN1_INTEGER, node)) != 0)
+ return ret;
+ if ((ret = asn1_append_tag(node, ASN1_CONSTRUCTED | ASN1_SEQUENCE)) != 0)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * write a der/pem encoded rsa private key into a file
+ */
+int x509write_keyfile(rsa_context *rsa, char *path, int out_flag)
+{
+ int ret = 0;
+ const char key_beg[] = "-----BEGIN RSA PRIVATE KEY-----\n",
+ key_end[] = "-----END RSA PRIVATE KEY-----\n";
+ x509_node node;
+
+ x509write_init_node(&node);
+ if ((ret = x509write_serialize_key(rsa,&node)) != 0) {
+ x509write_free_node(&node);
+ return ret;
+ }
+
+ ret = x509write_file(&node,path,out_flag,key_beg,key_end);
+ x509write_free_node(&node);
+
+ return ret;
+}
+
+
+/*
+ * reasize the memory for node
+ */
+static int x509write_realloc_node(x509_node *node, size_t larger)
+{
+ /* init len */
+ if (node->data == NULL) {
+ node->len = 0;
+ node->data = malloc(larger);
+ if(node->data == NULL)
+ return 1;
+ } else {
+ /* realloc memory */
+ if ((node->data = realloc(node->data, node->len + larger)) == NULL)
+ return 1;
+ }
+
+ /* init pointer */
+ node->p = &node->data[node->len];
+ node->len += larger;
+ node->end = &node->data[node->len -1];
+
+ return 0;
+}
+
+/*
+ * init node
+ */
+void x509write_init_node(x509_node *node)
+{
+ memset(node, 0, sizeof(x509_node));
+}
+
+/*
+ * clean memory
+ */
+void x509write_free_node(x509_node *node)
+{
+ if (node->data != NULL)
+ free(node->data);
+ node->p = NULL;
+ node->end = NULL;
+ node->len = 0;
+}
+
+/*
+ * write a x509 certificate into file
+ */
+int x509write_crtfile(x509_raw *chain, unsigned char *path, int out_flag)
+{
+ const char cer_beg[] = "-----BEGIN CERTIFICATE-----\n",
+ cer_end[] = "-----END CERTIFICATE-----\n";
+
+ return x509write_file(&chain->raw, (char*)path, out_flag, cer_beg, cer_end);
+}
+
+/*
+ * write a x509 certificate into file
+ */
+int x509write_csrfile(x509_raw *chain, unsigned char *path, int out_flag)
+{
+ const char cer_beg[] = "-----BEGIN CERTIFICATE REQUEST-----\n",
+ cer_end[] = "-----END CERTIFICATE REQUEST-----\n";
+
+ return x509write_file(&chain->raw, (char*)path, out_flag, cer_beg, cer_end);
+}
+
+/*
+ * write an x509 file
+ */
+static int x509write_file(x509_node *node, char *path, int format,
+ const char* pem_prolog, const char* pem_epilog)
+{
+ FILE *ofstream = stdout;
+ int is_err = 1, buf_len, i, n;
+ unsigned char* base_buf;
+
+ if (path) {
+ if ((ofstream = fopen(path, "wb")) == NULL)
+ return 1;
+ }
+
+ switch (format) {
+ case X509_OUTPUT_DER:
+ if (fwrite(node->data, 1, node->len, ofstream)
+ != node->len)
+ is_err = -1;
+ break;
+
+ case X509_OUTPUT_PEM:
+ if (fprintf(ofstream,pem_prolog)<0) {
+ is_err = -1;
+ break;
+ }
+
+ buf_len = node->len << 1;
+ base_buf = (unsigned char*) malloc((size_t)buf_len);
+ memset(base_buf,0,buf_len);
+ if (base64_encode(base_buf, &buf_len, node->data,
+ (int) node->len) != 0) {
+ is_err = -1;
+ break;
+ }
+
+ n=strlen((char*)base_buf);
+ for(i=0;i<n;i+=64) {
+ fprintf(ofstream,"%.64s\n",&base_buf[i]);
+ }
+
+ if (fprintf(ofstream, pem_epilog)<0) {
+ is_err = -1;
+ break;
+ }
+
+ free(base_buf);
+ }
+
+ fclose(ofstream);
+
+ if (is_err == -1)
+ return 1;
+
+ return 0;
+}
+
+
+/*
+ * add the owner public key to x509 certificate
+ */
+int x509write_add_pubkey(x509_raw *chain, rsa_context *pubkey)
+{
+ x509_node n_tmp, n_tmp2, *node;
+ int ret;
+
+ node = &chain->subpubkey;
+
+ x509write_init_node(&n_tmp);
+ x509write_init_node(&n_tmp2);
+
+ /*
+ * RSAPublicKey ::= SEQUENCE {
+ * modulus INTEGER, -- n
+ * publicExponent INTEGER -- e
+ * }
+ */
+ if ((ret = asn1_add_mpi(&pubkey->N, ASN1_INTEGER, &n_tmp)) != 0) {
+ x509write_free_node(&n_tmp);
+ x509write_free_node(&n_tmp2);
+ return ret;
+ }
+ if ((ret = asn1_add_mpi(&pubkey->E, ASN1_INTEGER, &n_tmp)) != 0) {
+ x509write_free_node(&n_tmp);
+ x509write_free_node(&n_tmp2);
+ return ret;
+ }
+ if ((ret = asn1_append_tag(&n_tmp, ASN1_CONSTRUCTED | ASN1_SEQUENCE))
+ != 0) {
+ x509write_free_node(&n_tmp);
+ x509write_free_node(&n_tmp2);
+ return ret;
+ }
+
+ /*
+ * SubjectPublicKeyInfo ::= SEQUENCE {
+ * algorithm AlgorithmIdentifier,
+ * subjectPublicKey BIT STRING }
+ */
+ if ((ret = asn1_append_tag(&n_tmp, ASN1_BIT_STRING)) != 0) {
+ x509write_free_node(&n_tmp);
+ x509write_free_node(&n_tmp2);
+ return ret;
+ }
+ if ((ret = asn1_add_oid(&n_tmp2, (unsigned char*)OID_PKCS1_RSA, 9,
+ ASN1_CONSTRUCTED | ASN1_SEQUENCE, ASN1_NULL,
+ (unsigned char *)"", 0)) != 0) {
+ x509write_free_node(&n_tmp);
+ x509write_free_node(&n_tmp2);
+ return ret;
+ }
+
+ if ((ret = asn1_append_nodes(node, ASN1_CONSTRUCTED | ASN1_SEQUENCE, 2,
+ &n_tmp2, &n_tmp))) {
+ x509write_free_node(&n_tmp);
+ x509write_free_node(&n_tmp2);
+ return ret;
+ }
+
+ x509write_free_node(&n_tmp);
+ x509write_free_node(&n_tmp2);
+ return 0;
+}
+
+/*
+ * RelativeDistinguishedName ::=
+ * SET OF AttributeTypeAndValue
+ *
+ * AttributeTypeAndValue ::= SEQUENCE {
+ * type AttributeType,
+ * value AttributeValue }
+ */
+static int x509write_add_name(x509_node *node, unsigned char *oid,
+ unsigned int oid_len, unsigned char *value, int len, int value_tag)
+{
+ int ret;
+ x509_node n_tmp;
+
+ x509write_init_node(&n_tmp);
+
+ if ((ret = asn1_add_oid(&n_tmp, oid, oid_len,
+ ASN1_CONSTRUCTED | ASN1_SEQUENCE, value_tag,
+ value, len))) {
+ x509write_free_node(&n_tmp);
+ return ret;
+ }
+
+ if ((asn1_append_nodes(node, ASN1_CONSTRUCTED | ASN1_SET, 1, &n_tmp))
+ != 0) {
+ x509write_free_node(&n_tmp);
+ return ret;
+ }
+
+ x509write_free_node(&n_tmp);
+ return 0;
+}
+
+/*
+ * Parse the name string and add to node
+ */
+static int x509write_parse_names(x509_node *node, unsigned char *names)
+{
+ unsigned char *sp, *begin = NULL;
+ unsigned char oid[3] = OID_X520, tag[4], *tag_sp = tag;
+ unsigned char *C = NULL, *CN = NULL, *O = NULL, *OU = NULL,
+ *ST = NULL, *L = NULL, *R = NULL;
+ int C_len = 0, CN_len = 0, O_len = 0, OU_len = 0, ST_len = 0,
+ L_len = 0, R_len = 0;
+ int ret = 0, is_tag = 1, is_begin = -1, len = 0;
+
+
+ for (sp = names; ; ++sp) {
+
+ /* filter tag */
+ if (is_tag == 1) {
+
+ if (tag_sp == &tag[3])
+ return POLARSSL_ERR_X509_VALUE_TO_LENGTH;
+
+ /* is tag end? */
+ if (*sp == '=') {
+ is_tag = -1;
+ *tag_sp = '\0';
+ is_begin = 1;
+ /* set len 0 (reset) */
+ len = 0;
+ } else {
+ /* tag hasn't ' '! */
+ if (*sp != ' ') {
+ *tag_sp = *sp;
+ ++tag_sp;
+ }
+ }
+ /* filter value */
+ } else {
+
+ /* set pointer of value begin */
+ if (is_begin == 1) {
+ begin = sp;
+ is_begin = -1;
+ }
+
+ /* is value at end? */
+ if (*sp == ';' or *sp == '\0') {
+ is_tag = 1;
+
+ /* common name */
+ if (tag[0] == 'C' and tag[1] == 'N') {
+ CN = begin;
+ CN_len = len;
+
+ /* organization */
+ } else if (tag[0] == 'O' and tag[1] == '\0') {
+ O = begin;
+ O_len = len;
+
+ /* country */
+ } else if (tag[0] == 'C' and tag[1] == '\0') {
+ C = begin;
+ C_len = len;
+
+ /* organisation unit */
+ } else if (tag[0] == 'O' and tag[1] == 'U') {
+ OU = begin;
+ OU_len = len;
+
+ /* state */
+ } else if (tag[0] == 'S' and tag[1] == 'T') {
+ ST = begin;
+ ST_len = len;
+
+ /* locality */
+ } else if (tag[0] == 'L' and tag[1] == '\0') {
+ L = begin;
+ L_len = len;
+
+ /* email */
+ } else if (tag[0] == 'R' and tag[1] == '\0') {
+ R = begin;
+ R_len = len;
+ }
+
+ /* set tag poiner to begin */
+ tag_sp = tag;
+
+ /* is at end? */
+ if (*sp == '\0' or *(sp +1) == '\0')
+ break;
+ } else {
+ ++len;
+ }
+ }
+
+ /* make saver */
+ if (*sp == '\0')
+ break;
+ } /* end for */
+
+ /* country */
+ if (C != NULL) {
+ oid[2] = X520_COUNTRY;
+ if ((ret = x509write_add_name(node, oid, 3, C, C_len,
+ ASN1_PRINTABLE_STRING)) != 0)
+ return ret;
+ }
+
+ /* state */
+ if (ST != NULL) {
+ oid[2] = X520_STATE;
+ if ((ret = x509write_add_name(node, oid, 3, ST, ST_len,
+ ASN1_PRINTABLE_STRING)) != 0)
+ return ret;
+ }
+
+ /* locality */
+ if (L != NULL) {
+ oid[2] = X520_LOCALITY;
+ if ((ret = x509write_add_name(node, oid, 3, L, L_len,
+ ASN1_PRINTABLE_STRING)) != 0)
+ return ret;
+ }
+
+ /* organization */
+ if (O != NULL) {
+ oid[2] = X520_ORGANIZATION;
+ if ((ret = x509write_add_name(node, oid, 3, O, O_len,
+ ASN1_PRINTABLE_STRING)) != 0)
+ return ret;
+ }
+
+ /* organisation unit */
+ if (OU != NULL) {
+ oid[2] = X520_ORG_UNIT;
+ if ((ret = x509write_add_name(node, oid, 3, OU, OU_len,
+ ASN1_PRINTABLE_STRING)) != 0)
+ return ret;
+ }
+
+ /* common name */
+ if (CN != NULL) {
+ oid[2] = X520_COMMON_NAME;
+ if ((ret = x509write_add_name(node, oid, 3, CN, CN_len,
+ ASN1_PRINTABLE_STRING)) != 0)
+ return ret;
+ }
+
+ /* email */
+ if (R != NULL) {
+ if ((ret = x509write_add_name(node, (unsigned char*)OID_PKCS9_EMAIL,
+ 9, R, R_len, ASN1_IA5_STRING)) != 0)
+ return ret;
+ }
+
+ if ((asn1_append_tag(node, ASN1_CONSTRUCTED | ASN1_SEQUENCE)) != 0)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * Copy raw data from orginal ca to node
+ */
+static int x509write_copy_from_raw(x509_node *node, x509_buf *raw)
+{
+ if (x509write_realloc_node(node, raw->len) != 0)
+ return 1;
+
+ memcpy(node->p, raw->p, (size_t)raw->len);
+ if ((node->p += raw->len -1) != node->end)
+ return POLARSSL_ERR_X509_POINT_ERROR;
+
+ return 0;
+}
+
+/*
+ * Add the issuer
+ */
+
+int x509write_add_issuer(x509_raw *crt, unsigned char *issuer)
+{
+ return x509write_parse_names(&crt->issuer, issuer);
+}
+
+/*
+ * Add the subject
+ */
+int x509write_add_subject(x509_raw *crt, unsigned char *subject)
+{
+ return x509write_parse_names(&crt->subject, subject);
+}
+
+/*
+ * Copy issuer line from another cert to issuer
+ */
+int x509write_copy_issuer(x509_raw *crt, x509_cert *from_crt)
+{
+ return x509write_copy_from_raw(&crt->issuer, &from_crt->issuer_raw);
+}
+
+/*
+ * Copy subject line from another cert
+ */
+int x509write_copy_subject(x509_raw *crt, x509_cert *from_crt)
+{
+ return x509write_copy_from_raw(&crt->subject, &from_crt->subject_raw);
+}
+
+/*
+ * Copy subject line form antoher cert into issuer
+ */
+int x509write_copy_issuer_form_subject(x509_raw *crt,
+ x509_cert *from_crt)
+{
+ return x509write_copy_from_raw(&crt->issuer, &from_crt->subject_raw);
+}
+
+/*
+ * Copy issuer line from another cert into subject
+ */
+int x509write_copy_subject_from_issuer(x509_raw *crt,
+ x509_cert * from_crt)
+{
+ return x509write_copy_from_raw(&crt->subject, &from_crt->issuer_raw);
+}
+
+/*
+ * Validity ::= SEQUENCE {
+ * notBefore Time,
+ * notAfter Time }
+ *
+ * Time ::= CHOICE {
+ * utcTime UTCTime,
+ * generalTime GeneralizedTime }
+ */
+/* TODO: No handle GeneralizedTime! */
+int x509write_add_validity(x509_raw *chain, unsigned char *befor,
+ unsigned char *after)
+{
+ int ret;
+
+ x509_node *node = &chain->validity;
+
+ /* notBefore */
+ if ((ret = asn1_add_date_utc(befor, node)) != 0)
+ return ret;
+
+ /* notAfter */
+ if ((ret = asn1_add_date_utc(after, node)) != 0)
+ return ret;
+
+ if ((ret = asn1_append_tag(node, ASN1_CONSTRUCTED | ASN1_SEQUENCE)) != 0)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * make hash from tbs and sign that with private key
+ */
+static int x509write_make_sign(x509_raw *chain, rsa_context *privkey)
+{
+ int ret;
+ unsigned char hash[20], *sign;
+ size_t sign_len = (size_t) mpi_size(&privkey->N);
+
+ /* make hash */
+ sha1(chain->tbs.data, chain->tbs.len, hash);
+
+ /* create sign */
+ sign = (unsigned char *) malloc(sign_len);
+ if (sign == NULL)
+ return 1;
+
+ if ((ret = rsa_pkcs1_sign(privkey, RSA_PRIVATE, RSA_SHA1, 20, hash,
+ sign)) != 0)
+ return ret;
+
+ if ((ret = asn1_add_obj(sign, sign_len, ASN1_BIT_STRING,
+ &chain->sign)) != 0)
+ return ret;
+
+ /*
+ * AlgorithmIdentifier ::= SEQUENCE {
+ * algorithm OBJECT IDENTIFIER,
+ * parameters ANY DEFINED BY algorithm OPTIONAL }
+ */
+ return asn1_add_oid(&chain->signalg, (unsigned char*)OID_PKCS1_RSA_SHA, 9,
+ ASN1_CONSTRUCTED | ASN1_SEQUENCE, ASN1_NULL,
+ (unsigned char*)"", 0);
+}
+
+/*
+ * Create a self signed certificate
+ */
+int x509write_create_sign(x509_raw *chain, rsa_context *privkey)
+{
+ int ret, serial;
+
+ /*
+ * Version ::= INTEGER { v1(0), v2(1), v3(2) }
+ */
+ if ((ret = asn1_add_int(2, &chain->version)) != 0)
+ return ret;
+
+ if ((ret = asn1_append_tag(&chain->version, ASN1_CONTEXT_SPECIFIC |
+ ASN1_CONSTRUCTED)) != 0)
+ return ret;
+
+
+ /*
+ * CertificateSerialNumber ::= INTEGER
+ */
+ srand((unsigned int) time(NULL));
+ serial = rand();
+ if ((ret = asn1_add_int(serial, &chain->serial)) != 0)
+ return ret;
+
+ /*
+ * AlgorithmIdentifier ::= SEQUENCE {
+ * algorithm OBJECT IDENTIFIER,
+ * parameters ANY DEFINED BY algorithm OPTIONAL }
+ */
+ if ((ret = asn1_add_oid(&chain->tbs_signalg,
+ (unsigned char*)OID_PKCS1_RSA_SHA, 9, ASN1_CONSTRUCTED |
+ ASN1_SEQUENCE, ASN1_NULL, (unsigned char*)"", 0)) != 0)
+ return ret;
+
+ /*
+ * Create the tbs
+ */
+ if ((ret = asn1_append_nodes(&chain->tbs, ASN1_CONSTRUCTED |
+ ASN1_SEQUENCE, 7, &chain->version, &chain->serial,
+ &chain->tbs_signalg, &chain->issuer, &chain->validity,
+ &chain->subject, &chain->subpubkey)) != 0)
+ return ret;
+
+ /* make signing */
+ if ((ret = x509write_make_sign(chain, privkey)) != 0)
+ return ret;
+
+ /* finishing */
+ if ((ret = asn1_append_nodes(&chain->raw, ASN1_CONSTRUCTED |
+ ASN1_SEQUENCE, 3, &chain->tbs, &chain->signalg,
+ &chain->sign)) != 0)
+ return ret;
+
+ return 0;
+}
+
+int x509write_create_selfsign(x509_raw *chain, rsa_context *privkey)
+{
+ /*
+ * On self signed certificate are subject and issuer the same
+ */
+ x509write_free_node(&chain->issuer);
+ chain->issuer = chain->subject;
+ return x509write_create_sign(chain, privkey);
+}
+
+/*
+ * CertificationRequestInfo ::= SEQUENCE {
+ * version Version,
+ * subject Name,
+ * subjectPublicKeyInfo SubjectPublicKeyInfo,
+ * attributes [0] IMPLICIT Attributes }
+ *
+ * CertificationRequest ::= SEQUENCE {
+ * certificationRequestInfo CertificationRequestInfo,
+ * signatureAlgorithm SignatureAlgorithmIdentifier,
+ * signature Signature }
+ *
+ * It use chain.serail for attributes!
+ *
+ */
+int x509write_create_csr(x509_raw *chain, rsa_context *privkey)
+{
+ int ret;
+
+ /* version ::= INTEGER */
+ if ((ret = asn1_add_int(0, &chain->version)) != 0)
+ return ret;
+
+ /* write attributes */
+ if ((ret = asn1_add_obj((unsigned char*)"", 0, ASN1_CONTEXT_SPECIFIC |
+ ASN1_CONSTRUCTED, &chain->serial)) != 0)
+ return ret;
+
+ /* create CertificationRequestInfo */
+ if ((ret = asn1_append_nodes(&chain->tbs, ASN1_CONSTRUCTED |
+ ASN1_SEQUENCE, 4, &chain->version, &chain->subject,
+ &chain->subpubkey, &chain->serial)) != 0)
+ return ret;
+
+ /* make signing */
+ if ((ret = x509write_make_sign(chain, privkey)) != 0)
+ return ret;
+
+ /* finish */
+ if ((ret = asn1_append_nodes(&chain->raw, ASN1_CONSTRUCTED | ASN1_SEQUENCE,
+ 3, &chain->tbs, &chain->signalg, &chain->sign)) != 0)
+ return ret;
+
+ return ret;
+}
+
+/*
+ * Free memory
+ */
+void x509write_free_raw(x509_raw *chain)
+{
+ x509write_free_node(&chain->raw);
+ x509write_free_node(&chain->tbs);
+ x509write_free_node(&chain->version);
+ x509write_free_node(&chain->serial);
+ x509write_free_node(&chain->tbs_signalg);
+ x509write_free_node(&chain->issuer);
+ x509write_free_node(&chain->validity);
+ if (chain->subject.data != chain->issuer.data)
+ x509write_free_node(&chain->subject);
+ x509write_free_node(&chain->subpubkey);
+ x509write_free_node(&chain->signalg);
+ x509write_free_node(&chain->sign);
+}
+
+void x509write_init_raw(x509_raw *chain)
+{
+ memset((void *) chain, 0, sizeof(x509_raw));
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 06:08:40 +0000