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diff --git a/src/crypto/bn/bn.c b/src/crypto/bn/bn.c
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+/* 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, BN_new, 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->d != NULL && (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, unsigned words) {
+ BN_ULONG *a;
+
+ if (words <= (unsigned) bn->dmax) {
+ return bn;
+ }
+
+ if (words > (INT_MAX / (4 * BN_BITS2))) {
+ OPENSSL_PUT_ERROR(BN, bn_wexpand, BN_R_BIGNUM_TOO_LONG);
+ return NULL;
+ }
+
+ if (bn->flags & BN_FLG_STATIC_DATA) {
+ OPENSSL_PUT_ERROR(BN, bn_wexpand, 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, bn_wexpand, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+ memcpy(a, bn->d, sizeof(BN_ULONG) * bn->top);
+
+ if (bn->d) {
+ OPENSSL_free(bn->d);
+ }
+ bn->d = a;
+ bn->dmax = words;
+
+ return bn;
+}
+
+BIGNUM *bn_expand(BIGNUM *bn, unsigned bits) {
+ 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;
+}
generated by cgit v1.1 at 2024-06-02 12:26:03 +0000