-/*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+/* crypto/bn/bn_rand.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.
+ *
+ * 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.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
+ *
+ * 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 above 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 acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
*
- * 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 <time.h>
-#include "internal/cryptlib.h"
+#include "cryptlib.h"
#include "bn_lcl.h"
#include <openssl/rand.h>
-#include <openssl/sha.h>
static int bnrand(int pseudorand, BIGNUM *rnd, int bits, int top, int bottom)
{
time_t tim;
if (bits == 0) {
- if (top != BN_RAND_TOP_ANY || bottom != BN_RAND_BOTTOM_ANY)
+ if (top != -1 || bottom != 0)
goto toosmall;
BN_zero(rnd);
return 1;
bit = (bits - 1) % 8;
mask = 0xff << (bit + 1);
- buf = OPENSSL_malloc(bytes);
+ buf = (unsigned char *)OPENSSL_malloc(bytes);
if (buf == NULL) {
BNerr(BN_F_BNRAND, ERR_R_MALLOC_FAILURE);
goto err;
time(&tim);
RAND_add(&tim, sizeof(tim), 0.0);
+ /* We ignore the value of pseudorand and always call RAND_bytes */
if (RAND_bytes(buf, bytes) <= 0)
goto err;
+#if 1
if (pseudorand == 2) {
/*
* generate patterns that are more likely to trigger BN library bugs
unsigned char c;
for (i = 0; i < bytes; i++) {
- if (RAND_bytes(&c, 1) <= 0)
+ if (RAND_pseudo_bytes(&c, 1) < 0)
goto err;
if (c >= 128 && i > 0)
buf[i] = buf[i - 1];
buf[i] = 255;
}
}
+#endif
if (top >= 0) {
if (top) {
goto err;
ret = 1;
err:
- OPENSSL_clear_free(buf, bytes);
+ if (buf != NULL) {
+ OPENSSL_cleanse(buf, bytes);
+ OPENSSL_free(buf);
+ }
bn_check_top(rnd);
return (ret);
return bnrand(1, rnd, bits, top, bottom);
}
+#if 1
int BN_bntest_rand(BIGNUM *rnd, int bits, int top, int bottom)
{
return bnrand(2, rnd, bits, top, bottom);
}
+#endif
/* random number r: 0 <= r < range */
static int bn_rand_range(int pseudo, BIGNUM *r, const BIGNUM *range)
* than range
*/
do {
- if (!bn_rand(r, n + 1, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY))
+ if (!bn_rand(r, n + 1, -1, 0))
return 0;
/*
* If r < 3*range, use r := r MOD range (which is either r, r -
} else {
do {
/* range = 11..._2 or range = 101..._2 */
- if (!bn_rand(r, n, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY))
+ if (!bn_rand(r, n, -1, 0))
return 0;
if (!--count) {
{
return bn_rand_range(1, r, range);
}
-
-/*
- * BN_generate_dsa_nonce generates a random number 0 <= out < range. Unlike
- * BN_rand_range, it also includes the contents of |priv| and |message| in
- * the generation so that an RNG failure isn't fatal as long as |priv|
- * remains secret. This is intended for use in DSA and ECDSA where an RNG
- * weakness leads directly to private key exposure unless this function is
- * used.
- */
-int BN_generate_dsa_nonce(BIGNUM *out, const BIGNUM *range,
- const BIGNUM *priv, const unsigned char *message,
- size_t message_len, BN_CTX *ctx)
-{
- SHA512_CTX sha;
- /*
- * We use 512 bits of random data per iteration to ensure that we have at
- * least |range| bits of randomness.
- */
- unsigned char random_bytes[64];
- unsigned char digest[SHA512_DIGEST_LENGTH];
- unsigned done, todo;
- /* We generate |range|+8 bytes of random output. */
- const unsigned num_k_bytes = BN_num_bytes(range) + 8;
- unsigned char private_bytes[96];
- unsigned char *k_bytes;
- int ret = 0;
-
- k_bytes = OPENSSL_malloc(num_k_bytes);
- if (k_bytes == NULL)
- goto err;
-
- /* We copy |priv| into a local buffer to avoid exposing its length. */
- todo = sizeof(priv->d[0]) * priv->top;
- if (todo > sizeof(private_bytes)) {
- /*
- * No reasonable DSA or ECDSA key should have a private key this
- * large and we don't handle this case in order to avoid leaking the
- * length of the private key.
- */
- BNerr(BN_F_BN_GENERATE_DSA_NONCE, BN_R_PRIVATE_KEY_TOO_LARGE);
- goto err;
- }
- memcpy(private_bytes, priv->d, todo);
- memset(private_bytes + todo, 0, sizeof(private_bytes) - todo);
-
- for (done = 0; done < num_k_bytes;) {
- if (RAND_bytes(random_bytes, sizeof(random_bytes)) != 1)
- goto err;
- SHA512_Init(&sha);
- SHA512_Update(&sha, &done, sizeof(done));
- SHA512_Update(&sha, private_bytes, sizeof(private_bytes));
- SHA512_Update(&sha, message, message_len);
- SHA512_Update(&sha, random_bytes, sizeof(random_bytes));
- SHA512_Final(digest, &sha);
-
- todo = num_k_bytes - done;
- if (todo > SHA512_DIGEST_LENGTH)
- todo = SHA512_DIGEST_LENGTH;
- memcpy(k_bytes + done, digest, todo);
- done += todo;
- }
-
- if (!BN_bin2bn(k_bytes, num_k_bytes, out))
- goto err;
- if (BN_mod(out, out, range, ctx) != 1)
- goto err;
- ret = 1;
-
- err:
- OPENSSL_free(k_bytes);
- OPENSSL_cleanse(private_bytes, sizeof(private_bytes));
- return ret;
-}
projects / efi-boot-shim.git / blobdiff