diff options
Diffstat (limited to 'third_party/boringssl/src/crypto/bn/bn.c')
-rw-r--r-- | third_party/boringssl/src/crypto/bn/bn.c | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/third_party/boringssl/src/crypto/bn/bn.c b/third_party/boringssl/src/crypto/bn/bn.c deleted file mode 100644 index b342749945..0000000000 --- a/third_party/boringssl/src/crypto/bn/bn.c +++ /dev/null @@ -1,342 +0,0 @@ -/* 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 <openssl/bn.h> - -#include <limits.h> -#include <string.h> - -#include <openssl/err.h> -#include <openssl/mem.h> - -#include "internal.h" - - -BIGNUM *BN_new(void) { - BIGNUM *bn = OPENSSL_malloc(sizeof(BIGNUM)); - - if (bn == NULL) { - OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE); - return NULL; - } - - memset(bn, 0, sizeof(BIGNUM)); - bn->flags = BN_FLG_MALLOCED; - - return bn; -} - -void BN_init(BIGNUM *bn) { - memset(bn, 0, sizeof(BIGNUM)); -} - -void BN_free(BIGNUM *bn) { - if (bn == NULL) { - return; - } - - if ((bn->flags & BN_FLG_STATIC_DATA) == 0) { - OPENSSL_free(bn->d); - } - - if (bn->flags & BN_FLG_MALLOCED) { - OPENSSL_free(bn); - } else { - bn->d = NULL; - } -} - -void BN_clear_free(BIGNUM *bn) { - char should_free; - - if (bn == NULL) { - return; - } - - if (bn->d != NULL) { - OPENSSL_cleanse(bn->d, bn->dmax * sizeof(bn->d[0])); - if ((bn->flags & BN_FLG_STATIC_DATA) == 0) { - OPENSSL_free(bn->d); - } - } - - should_free = (bn->flags & BN_FLG_MALLOCED) != 0; - OPENSSL_cleanse(bn, sizeof(BIGNUM)); - if (should_free) { - OPENSSL_free(bn); - } -} - -BIGNUM *BN_dup(const BIGNUM *src) { - BIGNUM *copy; - - if (src == NULL) { - return NULL; - } - - copy = BN_new(); - if (copy == NULL) { - return NULL; - } - - if (!BN_copy(copy, src)) { - BN_free(copy); - return NULL; - } - - return copy; -} - -BIGNUM *BN_copy(BIGNUM *dest, const BIGNUM *src) { - if (src == dest) { - return dest; - } - - if (bn_wexpand(dest, src->top) == NULL) { - return NULL; - } - - memcpy(dest->d, src->d, sizeof(src->d[0]) * src->top); - - dest->top = src->top; - dest->neg = src->neg; - return dest; -} - -void BN_clear(BIGNUM *bn) { - if (bn->d != NULL) { - memset(bn->d, 0, bn->dmax * sizeof(bn->d[0])); - } - - bn->top = 0; - bn->neg = 0; -} - -const BIGNUM *BN_value_one(void) { - static const BN_ULONG data_one = 1; - static const BIGNUM const_one = {(BN_ULONG *)&data_one, 1, 1, 0, - BN_FLG_STATIC_DATA}; - - return &const_one; -} - -void BN_with_flags(BIGNUM *out, const BIGNUM *in, int flags) { - memcpy(out, in, sizeof(BIGNUM)); - out->flags &= ~BN_FLG_MALLOCED; - out->flags |= BN_FLG_STATIC_DATA | flags; -} - -/* BN_num_bits_word returns the minimum number of bits needed to represent the - * value in |l|. */ -unsigned BN_num_bits_word(BN_ULONG l) { - static const unsigned 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(OPENSSL_64_BIT) - 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 -#endif - { - if (l & 0xffff0000L) { - if (l & 0xff000000L) { - return (bits[(int)(l >> 24L)] + 24); - } else { - return (bits[(int)(l >> 16L)] + 16); - } - } else { - if (l & 0xff00L) { - return (bits[(int)(l >> 8)] + 8); - } else { - return (bits[(int)(l)]); - } - } - } -} - -unsigned BN_num_bits(const BIGNUM *bn) { - const int max = bn->top - 1; - - if (BN_is_zero(bn)) { - return 0; - } - - return max*BN_BITS2 + BN_num_bits_word(bn->d[max]); -} - -unsigned BN_num_bytes(const BIGNUM *bn) { - return (BN_num_bits(bn) + 7) / 8; -} - -void BN_zero(BIGNUM *bn) { - bn->top = bn->neg = 0; -} - -int BN_one(BIGNUM *bn) { - return BN_set_word(bn, 1); -} - -int BN_set_word(BIGNUM *bn, BN_ULONG value) { - if (value == 0) { - BN_zero(bn); - return 1; - } - - if (bn_wexpand(bn, 1) == NULL) { - return 0; - } - - bn->neg = 0; - bn->d[0] = value; - bn->top = 1; - return 1; -} - -int BN_is_negative(const BIGNUM *bn) { - return bn->neg != 0; -} - -void BN_set_negative(BIGNUM *bn, int sign) { - if (sign && !BN_is_zero(bn)) { - bn->neg = 1; - } else { - bn->neg = 0; - } -} - -BIGNUM *bn_wexpand(BIGNUM *bn, size_t words) { - BN_ULONG *a; - - if (words <= (size_t)bn->dmax) { - return bn; - } - - if (words > (INT_MAX / (4 * BN_BITS2))) { - OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG); - return NULL; - } - - if (bn->flags & BN_FLG_STATIC_DATA) { - OPENSSL_PUT_ERROR(BN, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA); - return NULL; - } - - a = (BN_ULONG *)OPENSSL_malloc(sizeof(BN_ULONG) * words); - if (a == NULL) { - OPENSSL_PUT_ERROR(BN, ERR_R_MALLOC_FAILURE); - return NULL; - } - - memcpy(a, bn->d, sizeof(BN_ULONG) * bn->top); - - OPENSSL_free(bn->d); - bn->d = a; - bn->dmax = (int)words; - - return bn; -} - -BIGNUM *bn_expand(BIGNUM *bn, size_t bits) { - if (bits + BN_BITS2 - 1 < bits) { - OPENSSL_PUT_ERROR(BN, BN_R_BIGNUM_TOO_LONG); - return NULL; - } - return bn_wexpand(bn, (bits+BN_BITS2-1)/BN_BITS2); -} - -void bn_correct_top(BIGNUM *bn) { - BN_ULONG *ftl; - int tmp_top = bn->top; - - if (tmp_top > 0) { - for (ftl = &(bn->d[tmp_top - 1]); tmp_top > 0; tmp_top--) { - if (*(ftl--)) { - break; - } - } - bn->top = tmp_top; - } -} - -int BN_get_flags(const BIGNUM *bn, int flags) { - return bn->flags & flags; -} - -void BN_set_flags(BIGNUM *bn, int flags) { - bn->flags |= flags; -} |