1 files changed, 167 insertions, 0 deletions
diff --git a/src/lib/libcrypto/bn/bn_add.c b/src/lib/libcrypto/bn/bn_add.c
new file mode 100644
index 0000000000..efb2e312e8
--- /dev/null
+++ b/src/lib/libcrypto/bn/bn_add.c
@@ -0,0 +1,167 @@
+/* crypto/bn/bn_add.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.]
+ */
+#include <stdio.h>
+#include "cryptlib.h"
+#include "bn_lcl.h"
+/* r can == a or b */
+int BN_add(r, a, b)
+BIGNUM *r;
+BIGNUM *a;
+BIGNUM *b;
+        {
+        int i;
+        BIGNUM *tmp;
+        /*  a +  b      a+b
+         *  a + -b      a-b
+         * -a +  b      b-a
+         * -a + -b      -(a+b)
+         */
+        if (a->neg ^ b->neg)
+                {
+                /* only one is negative */
+                if (a->neg)
+                        { tmp=a; a=b; b=tmp; }
+                /* we are now a - b */
+                if (BN_ucmp(a,b) < 0)
+                        {
+                        if (bn_wexpand(r,b->top) == NULL) return(0);
+                        bn_qsub(r,b,a);
+                        r->neg=1;
+                        }
+                else
+                        {
+                        if (bn_wexpand(r,a->top) == NULL) return(0);
+                        bn_qsub(r,a,b);
+                        r->neg=0;
+                        }
+                return(1);
+                }
+        if (a->neg) /* both are neg */
+                r->neg=1;
+        else
+                r->neg=0;
+        i=(a->top > b->top);
+        if (i)
+                {
+                if (bn_wexpand(r,a->top+1) == NULL) return(0);
+                bn_qadd(r,a,b);
+                }
+        else
+                {
+                if (bn_wexpand(r,b->top+1) == NULL) return(0);
+                bn_qadd(r,b,a);
+                }
+        return(1);
+        }
+/* unsigned add of b to a, r must be large enough */
+void bn_qadd(r,a,b)
+BIGNUM *r;
+BIGNUM *a;
+BIGNUM *b;
+        {
+        register int i;
+        int max,min;
+        BN_ULONG *ap,*bp,*rp,carry,t1;
+        max=a->top;
+        min=b->top;
+        r->top=max;
+        ap=a->d;
+        bp=b->d;
+        rp=r->d;
+        carry=0;
+        carry=bn_add_words(rp,ap,bp,min);
+        rp+=min;
+        ap+=min;
+        bp+=min;
+        i=min;
+        if (carry)
+                {
+                while (i < max)
+                        {
+                        i++;
+                        t1= *(ap++);
+                        if ((*(rp++)=(t1+1)&BN_MASK2) >= t1)
+                                {
+                                carry=0;
+                                break;
+                                }
+                        }
+                if ((i >= max) && carry)
+                        {
+                        *(rp++)=1;
+                        r->top++;
+                        }
+                }
+        for (; i<max; i++)
+                *(rp++)= *(ap++);
+        /* memcpy(rp,ap,sizeof(*ap)*(max-i));*/
+        }

diff --git a/src/lib/libcrypto/bn/bn_add.c b/src/lib/libcrypto/bn/bn_add.c new file mode 100644 index 0000000000..efb2e312e8 --- /dev/null +++ b/src/lib/libcrypto/bn/bn_add.c
@@ -0,0 +1,167 @@
	1	/* crypto/bn/bn_add.c */
	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include <stdio.h>
	60	#include "cryptlib.h"
	61	#include "bn_lcl.h"
	62
	63	/* r can == a or b */
	64	int BN_add(r, a, b)
	65	BIGNUM *r;
	66	BIGNUM *a;
	67	BIGNUM *b;
	68	{
	69	int i;
	70	BIGNUM *tmp;
	71
	72	/* a + b a+b
	73	* a + -b a-b
	74	* -a + b b-a
	75	* -a + -b -(a+b)
	76	*/
	77	if (a->neg ^ b->neg)
	78	{
	79	/* only one is negative */
	80	if (a->neg)
	81	{ tmp=a; a=b; b=tmp; }
	82
	83	/* we are now a - b */
	84
	85	if (BN_ucmp(a,b) < 0)
	86	{
	87	if (bn_wexpand(r,b->top) == NULL) return(0);
	88	bn_qsub(r,b,a);
	89	r->neg=1;
	90	}
	91	else
	92	{
	93	if (bn_wexpand(r,a->top) == NULL) return(0);
	94	bn_qsub(r,a,b);
	95	r->neg=0;
	96	}
	97	return(1);
	98	}
	99
	100	if (a->neg) /* both are neg */
	101	r->neg=1;
	102	else
	103	r->neg=0;
	104
	105	i=(a->top > b->top);
	106
	107	if (i)
	108	{
	109	if (bn_wexpand(r,a->top+1) == NULL) return(0);
	110	bn_qadd(r,a,b);
	111	}
	112	else
	113	{
	114	if (bn_wexpand(r,b->top+1) == NULL) return(0);
	115	bn_qadd(r,b,a);
	116	}
	117	return(1);
	118	}
	119
	120	/* unsigned add of b to a, r must be large enough */
	121	void bn_qadd(r,a,b)
	122	BIGNUM *r;
	123	BIGNUM *a;
	124	BIGNUM *b;
	125	{
	126	register int i;
	127	int max,min;
	128	BN_ULONG ap,bp,*rp,carry,t1;
	129
	130	max=a->top;
	131	min=b->top;
	132	r->top=max;
	133
	134	ap=a->d;
	135	bp=b->d;
	136	rp=r->d;
	137	carry=0;
	138
	139	carry=bn_add_words(rp,ap,bp,min);
	140	rp+=min;
	141	ap+=min;
	142	bp+=min;
	143	i=min;
	144
	145	if (carry)
	146	{
	147	while (i < max)
	148	{
	149	i++;
	150	t1= *(ap++);
	151	if ((*(rp++)=(t1+1)&BN_MASK2) >= t1)
	152	{
	153	carry=0;
	154	break;
	155	}
	156	}
	157	if ((i >= max) && carry)
	158	{
	159	*(rp++)=1;
	160	r->top++;
	161	}
	162	}
	163	for (; i<max; i++)
	164	(rp++)= (ap++);
	165	/* memcpy(rp,ap,sizeof(ap)(max-i));*/
	166	}
	167