-/* crypto/bn/bn_print.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. 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.]
+ * 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
*/
#include <stdio.h>
#include <ctype.h>
-#include "cryptlib.h"
+#include <limits.h>
+#include "internal/cryptlib.h"
#include <openssl/buffer.h>
#include "bn_lcl.h"
char *buf;
char *p;
- buf = (char *)OPENSSL_malloc(a->top * BN_BYTES * 2 + 2);
+ if (a->neg && BN_is_zero(a)) {
+ /* "-0" == 3 bytes including NULL terminator */
+ buf = OPENSSL_malloc(3);
+ } else {
+ buf = OPENSSL_malloc(a->top * BN_BYTES * 2 + 2);
+ }
if (buf == NULL) {
BNerr(BN_F_BN_BN2HEX, ERR_R_MALLOC_FAILURE);
goto err;
*/
i = BN_num_bits(a) * 3;
num = (i / 10 + i / 1000 + 1) + 1;
- bn_data =
- (BN_ULONG *)OPENSSL_malloc((num / BN_DEC_NUM + 1) * sizeof(BN_ULONG));
- buf = (char *)OPENSSL_malloc(num + 3);
+ bn_data = OPENSSL_malloc((num / BN_DEC_NUM + 1) * sizeof(BN_ULONG));
+ buf = OPENSSL_malloc(num + 3);
if ((buf == NULL) || (bn_data == NULL)) {
BNerr(BN_F_BN_BN2DEC, ERR_R_MALLOC_FAILURE);
goto err;
}
ok = 1;
err:
- if (bn_data != NULL)
- OPENSSL_free(bn_data);
- if (t != NULL)
- BN_free(t);
- if (!ok && buf) {
- OPENSSL_free(buf);
- buf = NULL;
- }
-
- return (buf);
+ OPENSSL_free(bn_data);
+ BN_free(t);
+ if (ok)
+ return buf;
+ OPENSSL_free(buf);
+ return NULL;
}
int BN_hex2bn(BIGNUM **bn, const char *a)
a++;
}
- for (i = 0; isxdigit((unsigned char)a[i]); i++) ;
+ for (i = 0; i <= (INT_MAX/4) && isxdigit((unsigned char)a[i]); i++)
+ continue;
+
+ if (i == 0 || i > INT_MAX/4)
+ goto err;
num = i + neg;
if (bn == NULL)
BN_zero(ret);
}
- /* i is the number of hex digests; */
+ /* i is the number of hex digits */
if (bn_expand(ret, i * 4) == NULL)
goto err;
l = 0;
for (;;) {
c = a[j - m];
- if ((c >= '0') && (c <= '9'))
- k = c - '0';
- else if ((c >= 'a') && (c <= 'f'))
- k = c - 'a' + 10;
- else if ((c >= 'A') && (c <= 'F'))
- k = c - 'A' + 10;
- else
+ k = OPENSSL_hexchar2int(c);
+ if (k < 0)
k = 0; /* paranoia */
l = (l << 4) | k;
a++;
}
- for (i = 0; isdigit((unsigned char)a[i]); i++) ;
+ for (i = 0; i <= (INT_MAX/4) && isdigit((unsigned char)a[i]); i++)
+ continue;
+
+ if (i == 0 || i > INT_MAX/4)
+ goto err;
num = i + neg;
if (bn == NULL)
BN_zero(ret);
}
- /* i is the number of digests, a bit of an over expand; */
+ /* i is the number of digits, a bit of an over expand */
if (bn_expand(ret, i * 4) == NULL)
goto err;
l += *a - '0';
a++;
if (++j == BN_DEC_NUM) {
- BN_mul_word(ret, BN_DEC_CONV);
- BN_add_word(ret, l);
+ if (!BN_mul_word(ret, BN_DEC_CONV)
+ || !BN_add_word(ret, l))
+ goto err;
l = 0;
j = 0;
}
projects / openssl.git / blobdiff