Upgraded to openssl-1.0.2

1 files changed, 184 insertions, 169 deletions

diff --git a/openssl/crypto/bn/bn_mod.c b/openssl/crypto/bn/bn_mod.c
index 77d6ddb91..ffbce890c 100644
--- a/openssl/crypto/bn/bn_mod.c
+++ b/openssl/crypto/bn/bn_mod.c
@@ -1,6 +1,8 @@
 /* crypto/bn/bn_mod.c */
-/* Includes code written by Lenka Fibikova <fibikova@exp-math.uni-essen.de>
- * for the OpenSSL project. */
+/*
+ * Includes code written by Lenka Fibikova <fibikova@exp-math.uni-essen.de>
+ * for the OpenSSL project.
+ */
 /* ====================================================================
  * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
  *
@@ -9,7 +11,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    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
@@ -60,21 +62,21 @@
  * 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:
@@ -89,10 +91,10 @@
  *     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 
+ * 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
@@ -104,7 +106,7 @@
  * 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
@@ -114,188 +116,201 @@
 #include "cryptlib.h"
 #include "bn_lcl.h"
 
-
-#if 0 /* now just a #define */
+#if 0                           /* now just a #define */
 int BN_mod(BIGNUM *rem, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx)
-	{
-	return(BN_div(NULL,rem,m,d,ctx));
-	/* note that  rem->neg == m->neg  (unless the remainder is zero) */
-	}
+{
+    return (BN_div(NULL, rem, m, d, ctx));
+    /* note that  rem->neg == m->neg  (unless the remainder is zero) */
+}
 #endif
 
-
 int BN_nnmod(BIGNUM *r, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx)
-	{
-	/* like BN_mod, but returns non-negative remainder
-	 * (i.e.,  0 <= r < |d|  always holds) */
-
-	if (!(BN_mod(r,m,d,ctx)))
-		return 0;
-	if (!r->neg)
-		return 1;
-	/* now   -|d| < r < 0,  so we have to set  r := r + |d| */
-	return (d->neg ? BN_sub : BN_add)(r, r, d);
+{
+    /*
+     * like BN_mod, but returns non-negative remainder (i.e., 0 <= r < |d|
+     * always holds)
+     */
+
+    if (!(BN_mod(r, m, d, ctx)))
+        return 0;
+    if (!r->neg)
+        return 1;
+    /* now   -|d| < r < 0,  so we have to set  r := r + |d| */
+    return (d->neg ? BN_sub : BN_add) (r, r, d);
 }
 
+int BN_mod_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
+               BN_CTX *ctx)
+{
+    if (!BN_add(r, a, b))
+        return 0;
+    return BN_nnmod(r, r, m, ctx);
+}
 
-int BN_mod_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m, BN_CTX *ctx)
-	{
-	if (!BN_add(r, a, b)) return 0;
-	return BN_nnmod(r, r, m, ctx);
-	}
-
-
-/* BN_mod_add variant that may be used if both  a  and  b  are non-negative
- * and less than  m */
-int BN_mod_add_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m)
-	{
-	if (!BN_uadd(r, a, b)) return 0;
-	if (BN_ucmp(r, m) >= 0)
-		return BN_usub(r, r, m);
-	return 1;
-	}
-
-
-int BN_mod_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m, BN_CTX *ctx)
-	{
-	if (!BN_sub(r, a, b)) return 0;
-	return BN_nnmod(r, r, m, ctx);
-	}
-
+/*
+ * BN_mod_add variant that may be used if both a and b are non-negative and
+ * less than m
+ */
+int BN_mod_add_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                     const BIGNUM *m)
+{
+    if (!BN_uadd(r, a, b))
+        return 0;
+    if (BN_ucmp(r, m) >= 0)
+        return BN_usub(r, r, m);
+    return 1;
+}
 
-/* BN_mod_sub variant that may be used if both  a  and  b  are non-negative
- * and less than  m */
-int BN_mod_sub_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m)
-	{
-	if (!BN_sub(r, a, b)) return 0;
-	if (r->neg)
-		return BN_add(r, r, m);
-	return 1;
-	}
+int BN_mod_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
+               BN_CTX *ctx)
+{
+    if (!BN_sub(r, a, b))
+        return 0;
+    return BN_nnmod(r, r, m, ctx);
+}
 
+/*
+ * BN_mod_sub variant that may be used if both a and b are non-negative and
+ * less than m
+ */
+int BN_mod_sub_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
+                     const BIGNUM *m)
+{
+    if (!BN_sub(r, a, b))
+        return 0;
+    if (r->neg)
+        return BN_add(r, r, m);
+    return 1;
+}
 
 /* slow but works */
 int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
-	BN_CTX *ctx)
-	{
-	BIGNUM *t;
-	int ret=0;
-
-	bn_check_top(a);
-	bn_check_top(b);
-	bn_check_top(m);
-
-	BN_CTX_start(ctx);
-	if ((t = BN_CTX_get(ctx)) == NULL) goto err;
-	if (a == b)
-		{ if (!BN_sqr(t,a,ctx)) goto err; }
-	else
-		{ if (!BN_mul(t,a,b,ctx)) goto err; }
-	if (!BN_nnmod(r,t,m,ctx)) goto err;
-	bn_check_top(r);
-	ret=1;
-err:
-	BN_CTX_end(ctx);
-	return(ret);
-	}
-
+               BN_CTX *ctx)
+{
+    BIGNUM *t;
+    int ret = 0;
+
+    bn_check_top(a);
+    bn_check_top(b);
+    bn_check_top(m);
+
+    BN_CTX_start(ctx);
+    if ((t = BN_CTX_get(ctx)) == NULL)
+        goto err;
+    if (a == b) {
+        if (!BN_sqr(t, a, ctx))
+            goto err;
+    } else {
+        if (!BN_mul(t, a, b, ctx))
+            goto err;
+    }
+    if (!BN_nnmod(r, t, m, ctx))
+        goto err;
+    bn_check_top(r);
+    ret = 1;
+ err:
+    BN_CTX_end(ctx);
+    return (ret);
+}
 
 int BN_mod_sqr(BIGNUM *r, const BIGNUM *a, const BIGNUM *m, BN_CTX *ctx)
-	{
-	if (!BN_sqr(r, a, ctx)) return 0;
-	/* r->neg == 0,  thus we don't need BN_nnmod */
-	return BN_mod(r, r, m, ctx);
-	}
-
+{
+    if (!BN_sqr(r, a, ctx))
+        return 0;
+    /* r->neg == 0,  thus we don't need BN_nnmod */
+    return BN_mod(r, r, m, ctx);
+}
 
 int BN_mod_lshift1(BIGNUM *r, const BIGNUM *a, const BIGNUM *m, BN_CTX *ctx)
-	{
-	if (!BN_lshift1(r, a)) return 0;
-	bn_check_top(r);
-	return BN_nnmod(r, r, m, ctx);
-	}
-
+{
+    if (!BN_lshift1(r, a))
+        return 0;
+    bn_check_top(r);
+    return BN_nnmod(r, r, m, ctx);
+}
 
-/* BN_mod_lshift1 variant that may be used if  a  is non-negative
- * and less than  m */
+/*
+ * BN_mod_lshift1 variant that may be used if a is non-negative and less than
+ * m
+ */
 int BN_mod_lshift1_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *m)
-	{
-	if (!BN_lshift1(r, a)) return 0;
-	bn_check_top(r);
-	if (BN_cmp(r, m) >= 0)
-		return BN_sub(r, r, m);
-	return 1;
-	}
-
+{
+    if (!BN_lshift1(r, a))
+        return 0;
+    bn_check_top(r);
+    if (BN_cmp(r, m) >= 0)
+        return BN_sub(r, r, m);
+    return 1;
+}
 
-int BN_mod_lshift(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m, BN_CTX *ctx)
-	{
-	BIGNUM *abs_m = NULL;
-	int ret;
+int BN_mod_lshift(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m,
+                  BN_CTX *ctx)
+{
+    BIGNUM *abs_m = NULL;
+    int ret;
 
-	if (!BN_nnmod(r, a, m, ctx)) return 0;
+    if (!BN_nnmod(r, a, m, ctx))
+        return 0;
 
-	if (m->neg)
-		{
-		abs_m = BN_dup(m);
-		if (abs_m == NULL) return 0;
-		abs_m->neg = 0;
-		}
-	
-	ret = BN_mod_lshift_quick(r, r, n, (abs_m ? abs_m : m));
-	bn_check_top(r);
+    if (m->neg) {
+        abs_m = BN_dup(m);
+        if (abs_m == NULL)
+            return 0;
+        abs_m->neg = 0;
+    }
 
-	if (abs_m)
-		BN_free(abs_m);
-	return ret;
-	}
+    ret = BN_mod_lshift_quick(r, r, n, (abs_m ? abs_m : m));
+    bn_check_top(r);
 
+    if (abs_m)
+        BN_free(abs_m);
+    return ret;
+}
 
-/* BN_mod_lshift variant that may be used if  a  is non-negative
- * and less than  m */
+/*
+ * BN_mod_lshift variant that may be used if a is non-negative and less than
+ * m
+ */
 int BN_mod_lshift_quick(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m)
-	{
-	if (r != a)
-		{
-		if (BN_copy(r, a) == NULL) return 0;
-		}
-
-	while (n > 0)
-		{
-		int max_shift;
-		
-		/* 0 < r < m */
-		max_shift = BN_num_bits(m) - BN_num_bits(r);
-		/* max_shift >= 0 */
-
-		if (max_shift < 0)
-			{
-			BNerr(BN_F_BN_MOD_LSHIFT_QUICK, BN_R_INPUT_NOT_REDUCED);
-			return 0;
-			}
-
-		if (max_shift > n)
-			max_shift = n;
-
-		if (max_shift)
-			{
-			if (!BN_lshift(r, r, max_shift)) return 0;
-			n -= max_shift;
-			}
-		else
-			{
-			if (!BN_lshift1(r, r)) return 0;
-			--n;
-			}
-
-		/* BN_num_bits(r) <= BN_num_bits(m) */
-
-		if (BN_cmp(r, m) >= 0) 
-			{
-			if (!BN_sub(r, r, m)) return 0;
-			}
-		}
-	bn_check_top(r);
-	
-	return 1;
-	}
+{
+    if (r != a) {
+        if (BN_copy(r, a) == NULL)
+            return 0;
+    }
+
+    while (n > 0) {
+        int max_shift;
+
+        /* 0 < r < m */
+        max_shift = BN_num_bits(m) - BN_num_bits(r);
+        /* max_shift >= 0 */
+
+        if (max_shift < 0) {
+            BNerr(BN_F_BN_MOD_LSHIFT_QUICK, BN_R_INPUT_NOT_REDUCED);
+            return 0;
+        }
+
+        if (max_shift > n)
+            max_shift = n;
+
+        if (max_shift) {
+            if (!BN_lshift(r, r, max_shift))
+                return 0;
+            n -= max_shift;
+        } else {
+            if (!BN_lshift1(r, r))
+                return 0;
+            --n;
+        }
+
+        /* BN_num_bits(r) <= BN_num_bits(m) */
+
+        if (BN_cmp(r, m) >= 0) {
+            if (!BN_sub(r, r, m))
+                return 0;
+        }
+    }
+    bn_check_top(r);
+
+    return 1;
+}