branch Attitude Adjustment

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33625 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 576 insertions, 0 deletions

diff --git a/package/ead/src/tinysrp/bn_lib.c b/package/ead/src/tinysrp/bn_lib.c
new file mode 100644
index 000000000..cfa0d7566
--- /dev/null
+++ b/package/ead/src/tinysrp/bn_lib.c
@@ -0,0 +1,576 @@
+/* crypto/bn/bn_lib.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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 licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#ifndef BN_DEBUG
+# undef NDEBUG /* avoid conflicting definitions */
+# define NDEBUG
+#endif
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "bn_lcl.h"
+
+const char *BN_version="Big Number";
+
+/* For a 32 bit machine
+ * 2 -   4 ==  128
+ * 3 -   8 ==  256
+ * 4 -  16 ==  512
+ * 5 -  32 == 1024
+ * 6 -  64 == 2048
+ * 7 - 128 == 4096
+ * 8 - 256 == 8192
+ */
+static int bn_limit_bits=0;
+static int bn_limit_num=8;        /* (1<<bn_limit_bits) */
+static int bn_limit_bits_low=0;
+static int bn_limit_num_low=8;    /* (1<<bn_limit_bits_low) */
+static int bn_limit_bits_high=0;
+static int bn_limit_num_high=8;   /* (1<<bn_limit_bits_high) */
+static int bn_limit_bits_mont=0;
+static int bn_limit_num_mont=8;   /* (1<<bn_limit_bits_mont) */
+
+int BN_num_bits_word(BN_ULONG l)
+	{
+	static const char bits[256]={
+		0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,
+		5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+		6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+		6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+		7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+		7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+		7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+		7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+		};
+
+#if defined(SIXTY_FOUR_BIT_LONG)
+	if (l & 0xffffffff00000000L)
+		{
+		if (l & 0xffff000000000000L)
+			{
+			if (l & 0xff00000000000000L)
+				{
+				return(bits[(int)(l>>56)]+56);
+				}
+			else    return(bits[(int)(l>>48)]+48);
+			}
+		else
+			{
+			if (l & 0x0000ff0000000000L)
+				{
+				return(bits[(int)(l>>40)]+40);
+				}
+			else    return(bits[(int)(l>>32)]+32);
+			}
+		}
+	else
+#else
+#ifdef SIXTY_FOUR_BIT
+	if (l & 0xffffffff00000000LL)
+		{
+		if (l & 0xffff000000000000LL)
+			{
+			if (l & 0xff00000000000000LL)
+				{
+				return(bits[(int)(l>>56)]+56);
+				}
+			else    return(bits[(int)(l>>48)]+48);
+			}
+		else
+			{
+			if (l & 0x0000ff0000000000LL)
+				{
+				return(bits[(int)(l>>40)]+40);
+				}
+			else    return(bits[(int)(l>>32)]+32);
+			}
+		}
+	else
+#endif
+#endif
+		{
+#if defined(THIRTY_TWO_BIT) || defined(SIXTY_FOUR_BIT) || defined(SIXTY_FOUR_BIT_LONG)
+		if (l & 0xffff0000L)
+			{
+			if (l & 0xff000000L)
+				return(bits[(int)(l>>24L)]+24);
+			else    return(bits[(int)(l>>16L)]+16);
+			}
+		else
+#endif
+			{
+#if defined(SIXTEEN_BIT) || defined(THIRTY_TWO_BIT) || defined(SIXTY_FOUR_BIT) || defined(SIXTY_FOUR_BIT_LONG)
+			if (l & 0xff00L)
+				return(bits[(int)(l>>8)]+8);
+			else
+#endif
+				return(bits[(int)(l   )]  );
+			}
+		}
+	}
+
+int BN_num_bits(const BIGNUM *a)
+	{
+	BN_ULONG l;
+	int i;
+
+	bn_check_top(a);
+
+	if (a->top == 0) return(0);
+	l=a->d[a->top-1];
+	assert(l != 0);
+	i=(a->top-1)*BN_BITS2;
+	return(i+BN_num_bits_word(l));
+	}
+
+void BN_clear_free(BIGNUM *a)
+	{
+	int i;
+
+	if (a == NULL) return;
+	if (a->d != NULL)
+		{
+		memset(a->d,0,a->dmax*sizeof(a->d[0]));
+		if (!(BN_get_flags(a,BN_FLG_STATIC_DATA)))
+			free(a->d);
+		}
+	i=BN_get_flags(a,BN_FLG_MALLOCED);
+	memset(a,0,sizeof(BIGNUM));
+	if (i)
+		free(a);
+	}
+
+void BN_free(BIGNUM *a)
+	{
+	if (a == NULL) return;
+	if ((a->d != NULL) && !(BN_get_flags(a,BN_FLG_STATIC_DATA)))
+		free(a->d);
+	a->flags|=BN_FLG_FREE; /* REMOVE? */
+	if (a->flags & BN_FLG_MALLOCED)
+		free(a);
+	}
+
+void BN_init(BIGNUM *a)
+	{
+	memset(a,0,sizeof(BIGNUM));
+	}
+
+BIGNUM *BN_new(void)
+	{
+	BIGNUM *ret;
+
+	if ((ret=(BIGNUM *)malloc(sizeof(BIGNUM))) == NULL)
+		{
+		return(NULL);
+		}
+	ret->flags=BN_FLG_MALLOCED;
+	ret->top=0;
+	ret->neg=0;
+	ret->dmax=0;
+	ret->d=NULL;
+	return(ret);
+	}
+
+/* This is an internal function that should not be used in applications.
+ * It ensures that 'b' has enough room for a 'words' word number number.
+ * It is mostly used by the various BIGNUM routines. If there is an error,
+ * NULL is returned. If not, 'b' is returned. */
+
+BIGNUM *bn_expand2(BIGNUM *b, int words)
+	{
+	BN_ULONG *A,*a;
+	const BN_ULONG *B;
+	int i;
+
+	bn_check_top(b);
+
+	if (words > b->dmax)
+		{
+		bn_check_top(b);
+		if (BN_get_flags(b,BN_FLG_STATIC_DATA))
+			{
+			return(NULL);
+			}
+		a=A=(BN_ULONG *)malloc(sizeof(BN_ULONG)*(words+1));
+		if (A == NULL)
+			{
+			return(NULL);
+			}
+#if 1
+		B=b->d;
+		/* Check if the previous number needs to be copied */
+		if (B != NULL)
+			{
+#if 0
+			/* This lot is an unrolled loop to copy b->top
+			 * BN_ULONGs from B to A
+			 */
+/*
+ * I have nothing against unrolling but it's usually done for
+ * several reasons, namely:
+ * - minimize percentage of decision making code, i.e. branches;
+ * - avoid cache trashing;
+ * - make it possible to schedule loads earlier;
+ * Now let's examine the code below. The cornerstone of C is
+ * "programmer is always right" and that's what we love it for:-)
+ * For this very reason C compilers have to be paranoid when it
+ * comes to data aliasing and assume the worst. Yeah, but what
+ * does it mean in real life? This means that loop body below will
+ * be compiled to sequence of loads immediately followed by stores
+ * as compiler assumes the worst, something in A==B+1 style. As a
+ * result CPU pipeline is going to starve for incoming data. Secondly
+ * if A and B happen to share same cache line such code is going to
+ * cause severe cache trashing. Both factors have severe impact on
+ * performance of modern CPUs and this is the reason why this
+ * particular piece of code is #ifdefed away and replaced by more
+ * "friendly" version found in #else section below. This comment
+ * also applies to BN_copy function.
+ *
+ *                                      <appro@fy.chalmers.se>
+ */
+			for (i=b->top&(~7); i>0; i-=8)
+				{
+				A[0]=B[0]; A[1]=B[1]; A[2]=B[2]; A[3]=B[3];
+				A[4]=B[4]; A[5]=B[5]; A[6]=B[6]; A[7]=B[7];
+				A+=8;
+				B+=8;
+				}
+			switch (b->top&7)
+				{
+			case 7:
+				A[6]=B[6];
+			case 6:
+				A[5]=B[5];
+			case 5:
+				A[4]=B[4];
+			case 4:
+				A[3]=B[3];
+			case 3:
+				A[2]=B[2];
+			case 2:
+				A[1]=B[1];
+			case 1:
+				A[0]=B[0];
+			case 0:
+				/* I need the 'case 0' entry for utrix cc.
+				 * If the optimizer is turned on, it does the
+				 * switch table by doing
+				 * a=top&7
+				 * a--;
+				 * goto jump_table[a];
+				 * If top is 0, this makes us jump to 0xffffffc
+				 * which is rather bad :-(.
+				 * eric 23-Apr-1998
+				 */
+				;
+				}
+#else
+			for (i=b->top>>2; i>0; i--,A+=4,B+=4)
+				{
+				/*
+				 * The fact that the loop is unrolled
+				 * 4-wise is a tribute to Intel. It's
+				 * the one that doesn't have enough
+				 * registers to accomodate more data.
+				 * I'd unroll it 8-wise otherwise:-)
+				 *
+				 *              <appro@fy.chalmers.se>
+				 */
+				BN_ULONG a0,a1,a2,a3;
+				a0=B[0]; a1=B[1]; a2=B[2]; a3=B[3];
+				A[0]=a0; A[1]=a1; A[2]=a2; A[3]=a3;
+				}
+			switch (b->top&3)
+				{
+				case 3: A[2]=B[2];
+				case 2: A[1]=B[1];
+				case 1: A[0]=B[0];
+				case 0: ; /* ultrix cc workaround, see above */
+				}
+#endif
+			free(b->d);
+			}
+
+		b->d=a;
+		b->dmax=words;
+
+		/* Now need to zero any data between b->top and b->max */
+
+		A= &(b->d[b->top]);
+		for (i=(b->dmax - b->top)>>3; i>0; i--,A+=8)
+			{
+			A[0]=0; A[1]=0; A[2]=0; A[3]=0;
+			A[4]=0; A[5]=0; A[6]=0; A[7]=0;
+			}
+		for (i=(b->dmax - b->top)&7; i>0; i--,A++)
+			A[0]=0;
+#else
+			memset(A,0,sizeof(BN_ULONG)*(words+1));
+			memcpy(A,b->d,sizeof(b->d[0])*b->top);
+			b->d=a;
+			b->max=words;
+#endif
+
+/*              memset(&(p[b->max]),0,((words+1)-b->max)*sizeof(BN_ULONG)); */
+/*      { int i; for (i=b->max; i<words+1; i++) p[i]=i;} */
+
+		}
+	return(b);
+	}
+
+BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
+	{
+	int i;
+	BN_ULONG *A;
+	const BN_ULONG *B;
+
+	bn_check_top(b);
+
+	if (a == b) return(a);
+	if (bn_wexpand(a,b->top) == NULL) return(NULL);
+
+#if 1
+	A=a->d;
+	B=b->d;
+	for (i=b->top>>2; i>0; i--,A+=4,B+=4)
+		{
+		BN_ULONG a0,a1,a2,a3;
+		a0=B[0]; a1=B[1]; a2=B[2]; a3=B[3];
+		A[0]=a0; A[1]=a1; A[2]=a2; A[3]=a3;
+		}
+	switch (b->top&3)
+		{
+		case 3: A[2]=B[2];
+		case 2: A[1]=B[1];
+		case 1: A[0]=B[0];
+		case 0: ; /* ultrix cc workaround, see comments in bn_expand2 */
+		}
+#else
+	memcpy(a->d,b->d,sizeof(b->d[0])*b->top);
+#endif
+
+/*      memset(&(a->d[b->top]),0,sizeof(a->d[0])*(a->max-b->top));*/
+	a->top=b->top;
+	if ((a->top == 0) && (a->d != NULL))
+		a->d[0]=0;
+	a->neg=b->neg;
+	return(a);
+	}
+
+int BN_set_word(BIGNUM *a, BN_ULONG w)
+	{
+	int i,n;
+	if (bn_expand(a,sizeof(BN_ULONG)*8) == NULL) return(0);
+
+	n=sizeof(BN_ULONG)/BN_BYTES;
+	a->neg=0;
+	a->top=0;
+	a->d[0]=(BN_ULONG)w&BN_MASK2;
+	if (a->d[0] != 0) a->top=1;
+	for (i=1; i<n; i++)
+		{
+		/* the following is done instead of
+		 * w>>=BN_BITS2 so compilers don't complain
+		 * on builds where sizeof(long) == BN_TYPES */
+#ifndef SIXTY_FOUR_BIT /* the data item > unsigned long */
+		w>>=BN_BITS4;
+		w>>=BN_BITS4;
+#else
+		w=0;
+#endif
+		a->d[i]=(BN_ULONG)w&BN_MASK2;
+		if (a->d[i] != 0) a->top=i+1;
+		}
+	return(1);
+	}
+
+/* ignore negative */
+BIGNUM *BN_bin2bn(const unsigned char *s, int len, BIGNUM *ret)
+	{
+	unsigned int i,m;
+	unsigned int n;
+	BN_ULONG l;
+
+	if (ret == NULL) ret=BN_new();
+	if (ret == NULL) return(NULL);
+	l=0;
+	n=len;
+	if (n == 0)
+		{
+		ret->top=0;
+		return(ret);
+		}
+	if (bn_expand(ret,(int)(n+2)*8) == NULL)
+		return(NULL);
+	i=((n-1)/BN_BYTES)+1;
+	m=((n-1)%(BN_BYTES));
+	ret->top=i;
+	while (n-- > 0)
+		{
+		l=(l<<8L)| *(s++);
+		if (m-- == 0)
+			{
+			ret->d[--i]=l;
+			l=0;
+			m=BN_BYTES-1;
+			}
+		}
+	/* need to call this due to clear byte at top if avoiding
+	 * having the top bit set (-ve number) */
+	bn_fix_top(ret);
+	return(ret);
+	}
+
+/* ignore negative */
+int BN_bn2bin(const BIGNUM *a, unsigned char *to)
+	{
+	int n,i;
+	BN_ULONG l;
+
+	n=i=BN_num_bytes(a);
+	while (i-- > 0)
+		{
+		l=a->d[i/BN_BYTES];
+		*(to++)=(unsigned char)(l>>(8*(i%BN_BYTES)))&0xff;
+		}
+	return(n);
+	}
+
+int BN_ucmp(const BIGNUM *a, const BIGNUM *b)
+	{
+	int i;
+	BN_ULONG t1,t2,*ap,*bp;
+
+	bn_check_top(a);
+	bn_check_top(b);
+
+	i=a->top-b->top;
+	if (i != 0) return(i);
+	ap=a->d;
+	bp=b->d;
+	for (i=a->top-1; i>=0; i--)
+		{
+		t1= ap[i];
+		t2= bp[i];
+		if (t1 != t2)
+			return(t1 > t2?1:-1);
+		}
+	return(0);
+	}
+
+int BN_cmp(const BIGNUM *a, const BIGNUM *b)
+	{
+	int i;
+	int gt,lt;
+	BN_ULONG t1,t2;
+
+	if ((a == NULL) || (b == NULL))
+		{
+		if (a != NULL)
+			return(-1);
+		else if (b != NULL)
+			return(1);
+		else
+			return(0);
+		}
+
+	bn_check_top(a);
+	bn_check_top(b);
+
+	if (a->neg != b->neg)
+		{
+		if (a->neg)
+			return(-1);
+		else    return(1);
+		}
+	if (a->neg == 0)
+		{ gt=1; lt= -1; }
+	else    { gt= -1; lt=1; }
+
+	if (a->top > b->top) return(gt);
+	if (a->top < b->top) return(lt);
+	for (i=a->top-1; i>=0; i--)
+		{
+		t1=a->d[i];
+		t2=b->d[i];
+		if (t1 > t2) return(gt);
+		if (t1 < t2) return(lt);
+		}
+	return(0);
+	}
+
+int BN_is_bit_set(const BIGNUM *a, int n)
+	{
+	int i,j;
+
+	if (n < 0) return(0);
+	i=n/BN_BITS2;
+	j=n%BN_BITS2;
+	if (a->top <= i) return(0);
+	return((a->d[i]&(((BN_ULONG)1)<<j))?1:0);
+	}