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author | Mathieu Trudel-Lapierre <mathieu.trudel-lapierre@canonical.com> | 2017-09-13 12:09:40 -0700 |
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committer | Mathieu Trudel-Lapierre <mathieu.trudel-lapierre@canonical.com> | 2017-09-13 12:09:40 -0700 |
commit | b6f94dbeacfc6f0a507413096189304c58dbe66c (patch) | |
tree | bce8c7db22209078618294c51d95a0c033aec7d9 /Cryptlib/OpenSSL/crypto/bn/bn_mul.c | |
parent | 25f7fd1fb389a5f6356f353d16c5ead80dac6bbc (diff) | |
download | efi-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.c | 154 |
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 (;;) { |