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authorMathieu Trudel-Lapierre <mathieu.trudel-lapierre@canonical.com>2017-09-13 12:09:40 -0700
committerMathieu Trudel-Lapierre <mathieu.trudel-lapierre@canonical.com>2017-09-13 12:09:40 -0700
commitb6f94dbeacfc6f0a507413096189304c58dbe66c (patch)
treebce8c7db22209078618294c51d95a0c033aec7d9 /Cryptlib/OpenSSL/crypto/bn/bn_mul.c
parent25f7fd1fb389a5f6356f353d16c5ead80dac6bbc (diff)
downloadefi-boot-shim-upstream/13_git1505328970.9c1c35c5.tar.gz
efi-boot-shim-upstream/13_git1505328970.9c1c35c5.zip
New upstream version 13~git1505328970.9c1c35c5upstream/13_git1505328970.9c1c35c5
Diffstat (limited to 'Cryptlib/OpenSSL/crypto/bn/bn_mul.c')
-rw-r--r--Cryptlib/OpenSSL/crypto/bn/bn_mul.c154
1 files changed, 137 insertions, 17 deletions
diff --git a/Cryptlib/OpenSSL/crypto/bn/bn_mul.c b/Cryptlib/OpenSSL/crypto/bn/bn_mul.c
index 4a0a9505..3c618dc3 100644
--- a/Cryptlib/OpenSSL/crypto/bn/bn_mul.c
+++ b/Cryptlib/OpenSSL/crypto/bn/bn_mul.c
@@ -1,14 +1,69 @@
-/*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+/* crypto/bn/bn_mul.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.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
+ * 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 <stdio.h>
#include <assert.h>
-#include "internal/cryptlib.h"
+#include "cryptlib.h"
#include "bn_lcl.h"
#if defined(OPENSSL_NO_ASM) || !defined(OPENSSL_BN_ASM_PART_WORDS)
@@ -16,7 +71,7 @@
* Here follows specialised variants of bn_add_words() and bn_sub_words().
* They have the property performing operations on arrays of different sizes.
* The sizes of those arrays is expressed through cl, which is the common
- * length ( basically, min(len(a),len(b)) ), and dl, which is the delta
+ * length ( basicall, min(len(a),len(b)) ), and dl, which is the delta
* between the two lengths, calculated as len(a)-len(b). All lengths are the
* number of BN_ULONGs... For the operations that require a result array as
* parameter, it must have the length cl+abs(dl). These functions should
@@ -41,6 +96,10 @@ BN_ULONG bn_sub_part_words(BN_ULONG *r,
b += cl;
if (dl < 0) {
+# ifdef BN_COUNT
+ fprintf(stderr, " bn_sub_part_words %d + %d (dl < 0, c = %d)\n", cl,
+ dl, c);
+# endif
for (;;) {
t = b[0];
r[0] = (0 - t - c) & BN_MASK2;
@@ -75,6 +134,10 @@ BN_ULONG bn_sub_part_words(BN_ULONG *r,
}
} else {
int save_dl = dl;
+# ifdef BN_COUNT
+ fprintf(stderr, " bn_sub_part_words %d + %d (dl > 0, c = %d)\n", cl,
+ dl, c);
+# endif
while (c) {
t = a[0];
r[0] = (t - c) & BN_MASK2;
@@ -109,6 +172,10 @@ BN_ULONG bn_sub_part_words(BN_ULONG *r,
r += 4;
}
if (dl > 0) {
+# ifdef BN_COUNT
+ fprintf(stderr, " bn_sub_part_words %d + %d (dl > 0, c == 0)\n",
+ cl, dl);
+# endif
if (save_dl > dl) {
switch (save_dl - dl) {
case 1:
@@ -129,6 +196,10 @@ BN_ULONG bn_sub_part_words(BN_ULONG *r,
}
}
if (dl > 0) {
+# ifdef BN_COUNT
+ fprintf(stderr, " bn_sub_part_words %d + %d (dl > 0, copy)\n",
+ cl, dl);
+# endif
for (;;) {
r[0] = a[0];
if (--dl <= 0)
@@ -170,6 +241,10 @@ BN_ULONG bn_add_part_words(BN_ULONG *r,
if (dl < 0) {
int save_dl = dl;
+#ifdef BN_COUNT
+ fprintf(stderr, " bn_add_part_words %d + %d (dl < 0, c = %d)\n", cl,
+ dl, c);
+#endif
while (c) {
l = (c + b[0]) & BN_MASK2;
c = (l < c);
@@ -200,6 +275,10 @@ BN_ULONG bn_add_part_words(BN_ULONG *r,
r += 4;
}
if (dl < 0) {
+#ifdef BN_COUNT
+ fprintf(stderr, " bn_add_part_words %d + %d (dl < 0, c == 0)\n",
+ cl, dl);
+#endif
if (save_dl < dl) {
switch (dl - save_dl) {
case 1:
@@ -220,6 +299,10 @@ BN_ULONG bn_add_part_words(BN_ULONG *r,
}
}
if (dl < 0) {
+#ifdef BN_COUNT
+ fprintf(stderr, " bn_add_part_words %d + %d (dl < 0, copy)\n",
+ cl, dl);
+#endif
for (;;) {
r[0] = b[0];
if (++dl >= 0)
@@ -240,6 +323,9 @@ BN_ULONG bn_add_part_words(BN_ULONG *r,
}
} else {
int save_dl = dl;
+#ifdef BN_COUNT
+ fprintf(stderr, " bn_add_part_words %d + %d (dl > 0)\n", cl, dl);
+#endif
while (c) {
t = (a[0] + c) & BN_MASK2;
c = (t < c);
@@ -269,6 +355,10 @@ BN_ULONG bn_add_part_words(BN_ULONG *r,
a += 4;
r += 4;
}
+#ifdef BN_COUNT
+ fprintf(stderr, " bn_add_part_words %d + %d (dl > 0, c == 0)\n", cl,
+ dl);
+#endif
if (dl > 0) {
if (save_dl > dl) {
switch (save_dl - dl) {
@@ -290,6 +380,10 @@ BN_ULONG bn_add_part_words(BN_ULONG *r,
}
}
if (dl > 0) {
+#ifdef BN_COUNT
+ fprintf(stderr, " bn_add_part_words %d + %d (dl > 0, copy)\n",
+ cl, dl);
+#endif
for (;;) {
r[0] = a[0];
if (--dl <= 0)
@@ -338,6 +432,9 @@ void bn_mul_recursive(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n2,
unsigned int neg, zero;
BN_ULONG ln, lo, *p;
+# ifdef BN_COUNT
+ fprintf(stderr, " bn_mul_recursive %d%+d * %d%+d\n", n2, dna, n2, dnb);
+# endif
# ifdef BN_MUL_COMBA
# if 0
if (n2 == 4) {
@@ -404,7 +501,7 @@ void bn_mul_recursive(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n2,
if (!zero)
bn_mul_comba4(&(t[n2]), t, &(t[n]));
else
- memset(&t[n2], 0, sizeof(*t) * 8);
+ memset(&(t[n2]), 0, 8 * sizeof(BN_ULONG));
bn_mul_comba4(r, a, b);
bn_mul_comba4(&(r[n2]), &(a[n]), &(b[n]));
@@ -414,7 +511,7 @@ void bn_mul_recursive(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n2,
if (!zero)
bn_mul_comba8(&(t[n2]), t, &(t[n]));
else
- memset(&t[n2], 0, sizeof(*t) * 16);
+ memset(&(t[n2]), 0, 16 * sizeof(BN_ULONG));
bn_mul_comba8(r, a, b);
bn_mul_comba8(&(r[n2]), &(a[n]), &(b[n]));
@@ -425,7 +522,7 @@ void bn_mul_recursive(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n2,
if (!zero)
bn_mul_recursive(&(t[n2]), t, &(t[n]), n, 0, 0, p);
else
- memset(&t[n2], 0, sizeof(*t) * n2);
+ memset(&(t[n2]), 0, n2 * sizeof(BN_ULONG));
bn_mul_recursive(r, a, b, n, 0, 0, p);
bn_mul_recursive(&(r[n2]), &(a[n]), &(b[n]), n, dna, dnb, p);
}
@@ -484,6 +581,10 @@ void bn_mul_part_recursive(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n,
int c1, c2, neg;
BN_ULONG ln, lo, *p;
+# ifdef BN_COUNT
+ fprintf(stderr, " bn_mul_part_recursive (%d%+d) * (%d%+d)\n",
+ n, tna, n, tnb);
+# endif
if (n < 8) {
bn_mul_normal(r, a, n + tna, b, n + tnb);
return;
@@ -530,14 +631,14 @@ void bn_mul_part_recursive(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n,
bn_mul_comba4(&(t[n2]), t, &(t[n]));
bn_mul_comba4(r, a, b);
bn_mul_normal(&(r[n2]), &(a[n]), tn, &(b[n]), tn);
- memset(&r[n2 + tn * 2], 0, sizeof(*r) * (n2 - tn * 2));
+ memset(&(r[n2 + tn * 2]), 0, sizeof(BN_ULONG) * (n2 - tn * 2));
} else
# endif
if (n == 8) {
bn_mul_comba8(&(t[n2]), t, &(t[n]));
bn_mul_comba8(r, a, b);
bn_mul_normal(&(r[n2]), &(a[n]), tna, &(b[n]), tnb);
- memset(&r[n2 + tna + tnb], 0, sizeof(*r) * (n2 - tna - tnb));
+ memset(&(r[n2 + tna + tnb]), 0, sizeof(BN_ULONG) * (n2 - tna - tnb));
} else {
p = &(t[n2 * 2]);
bn_mul_recursive(&(t[n2]), t, &(t[n]), n, 0, 0, p);
@@ -553,7 +654,7 @@ void bn_mul_part_recursive(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n,
if (j == 0) {
bn_mul_recursive(&(r[n2]), &(a[n]), &(b[n]),
i, tna - i, tnb - i, p);
- memset(&r[n2 + i * 2], 0, sizeof(*r) * (n2 - i * 2));
+ memset(&(r[n2 + i * 2]), 0, sizeof(BN_ULONG) * (n2 - i * 2));
} else if (j > 0) { /* eg, n == 16, i == 8 and tn == 11 */
bn_mul_part_recursive(&(r[n2]), &(a[n]), &(b[n]),
i, tna - i, tnb - i, p);
@@ -561,7 +662,7 @@ void bn_mul_part_recursive(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n,
sizeof(BN_ULONG) * (n2 - tna - tnb));
} else { /* (j < 0) eg, n == 16, i == 8 and tn == 5 */
- memset(&r[n2], 0, sizeof(*r) * n2);
+ memset(&(r[n2]), 0, sizeof(BN_ULONG) * n2);
if (tna < BN_MUL_RECURSIVE_SIZE_NORMAL
&& tnb < BN_MUL_RECURSIVE_SIZE_NORMAL) {
bn_mul_normal(&(r[n2]), &(a[n]), tna, &(b[n]), tnb);
@@ -640,6 +741,10 @@ void bn_mul_low_recursive(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n2,
{
int n = n2 / 2;
+# ifdef BN_COUNT
+ fprintf(stderr, " bn_mul_low_recursive %d * %d\n", n2, n2);
+# endif
+
bn_mul_recursive(r, a, b, n, 0, 0, &(t[0]));
if (n >= BN_MUL_LOW_RECURSIVE_SIZE_NORMAL) {
bn_mul_low_recursive(&(t[0]), &(a[0]), &(b[n]), n, &(t[n2]));
@@ -668,6 +773,9 @@ void bn_mul_high(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, BN_ULONG *l, int n2,
int neg, oneg, zero;
BN_ULONG ll, lc, *lp, *mp;
+# ifdef BN_COUNT
+ fprintf(stderr, " bn_mul_high %d * %d\n", n2, n2);
+# endif
n = n2 / 2;
/* Calculate (al-ah)*(bh-bl) */
@@ -729,8 +837,9 @@ void bn_mul_high(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, BN_ULONG *l, int n2,
*/
if (l != NULL) {
lp = &(t[n2 + n]);
- bn_add_words(lp, &(r[0]), &(l[0]), n);
+ c1 = (int)(bn_add_words(lp, &(r[0]), &(l[0]), n));
} else {
+ c1 = 0;
lp = &(r[0]);
}
@@ -838,6 +947,10 @@ int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
int j = 0, k;
#endif
+#ifdef BN_COUNT
+ fprintf(stderr, "BN_mul %d * %d\n", a->top, b->top);
+#endif
+
bn_check_top(a);
bn_check_top(b);
bn_check_top(r);
@@ -857,6 +970,7 @@ int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
goto err;
} else
rr = r;
+ rr->neg = a->neg ^ b->neg;
#if defined(BN_MUL_COMBA) || defined(BN_RECURSION)
i = al - bl;
@@ -968,7 +1082,6 @@ int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
#if defined(BN_MUL_COMBA) || defined(BN_RECURSION)
end:
#endif
- rr->neg = a->neg ^ b->neg;
bn_correct_top(rr);
if (r != rr && BN_copy(r, rr) == NULL)
goto err;
@@ -984,6 +1097,10 @@ void bn_mul_normal(BN_ULONG *r, BN_ULONG *a, int na, BN_ULONG *b, int nb)
{
BN_ULONG *rr;
+#ifdef BN_COUNT
+ fprintf(stderr, " bn_mul_normal %d * %d\n", na, nb);
+#endif
+
if (na < nb) {
int itmp;
BN_ULONG *ltmp;
@@ -1024,6 +1141,9 @@ void bn_mul_normal(BN_ULONG *r, BN_ULONG *a, int na, BN_ULONG *b, int nb)
void bn_mul_low_normal(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n)
{
+#ifdef BN_COUNT
+ fprintf(stderr, " bn_mul_low_normal %d * %d\n", n, n);
+#endif
bn_mul_words(r, a, n, b[0]);
for (;;) {