-/* crypto/rsa/rsa_lib.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2017 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 <openssl/crypto.h>
-#include "cryptlib.h"
-#include <openssl/lhash.h>
+#include "internal/cryptlib.h"
#include "internal/bn_int.h"
-#include <openssl/rsa.h>
#include <openssl/rand.h>
+#include "rsa_locl.h"
+
+int RSA_bits(const RSA *r)
+{
+ return BN_num_bits(r->n);
+}
int RSA_size(const RSA *r)
{
- return (BN_num_bytes(r->n));
+ return BN_num_bytes(r->n);
}
int RSA_public_encrypt(int flen, const unsigned char *from, unsigned char *to,
RSA *rsa, int padding)
{
- return (rsa->meth->rsa_pub_enc(flen, from, to, rsa, padding));
+ return rsa->meth->rsa_pub_enc(flen, from, to, rsa, padding);
}
int RSA_private_encrypt(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding)
{
- return (rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding));
+ return rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding);
}
int RSA_private_decrypt(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding)
{
- return (rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding));
+ return rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding);
}
int RSA_public_decrypt(int flen, const unsigned char *from, unsigned char *to,
RSA *rsa, int padding)
{
- return (rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding));
+ return rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding);
}
int RSA_flags(const RSA *r)
{
- return ((r == NULL) ? 0 : r->meth->flags);
+ return r == NULL ? 0 : r->meth->flags;
}
void RSA_blinding_off(RSA *rsa)
{
- if (rsa->blinding != NULL) {
- BN_BLINDING_free(rsa->blinding);
- rsa->blinding = NULL;
- }
+ BN_BLINDING_free(rsa->blinding);
+ rsa->blinding = NULL;
rsa->flags &= ~RSA_FLAG_BLINDING;
rsa->flags |= RSA_FLAG_NO_BLINDING;
}
rsa->flags &= ~RSA_FLAG_NO_BLINDING;
ret = 1;
err:
- return (ret);
+ return ret;
}
static BIGNUM *rsa_get_public_exp(const BIGNUM *d, const BIGNUM *p,
BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *in_ctx)
{
- BIGNUM *local_n = NULL;
- BIGNUM *e, *n;
+ BIGNUM *e;
BN_CTX *ctx;
BN_BLINDING *ret = NULL;
if (in_ctx == NULL) {
if ((ctx = BN_CTX_new()) == NULL)
return 0;
- } else
+ } else {
ctx = in_ctx;
+ }
BN_CTX_start(ctx);
e = BN_CTX_get(ctx);
RSAerr(RSA_F_RSA_SETUP_BLINDING, RSA_R_NO_PUBLIC_EXPONENT);
goto err;
}
- } else
+ } else {
e = rsa->e;
-
- if ((RAND_status() == 0) && rsa->d != NULL
- && bn_get_words(rsa->d) != NULL) {
- /*
- * if PRNG is not properly seeded, resort to secret exponent as
- * unpredictable seed
- */
- RAND_add(bn_get_words(rsa->d), bn_get_dmax(rsa->d) * sizeof(BN_ULONG),
- 0.0);
}
- if (!(rsa->flags & RSA_FLAG_NO_CONSTTIME)) {
- /* Set BN_FLG_CONSTTIME flag */
- local_n = n = BN_new();
- if (!local_n) {
+ {
+ BIGNUM *n = BN_new();
+
+ if (n == NULL) {
RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_MALLOC_FAILURE);
goto err;
}
BN_with_flags(n, rsa->n, BN_FLG_CONSTTIME);
- } else
- n = rsa->n;
- ret = BN_BLINDING_create_param(NULL, e, n, ctx,
- rsa->meth->bn_mod_exp, rsa->_method_mod_n);
+ ret = BN_BLINDING_create_param(NULL, e, n, ctx, rsa->meth->bn_mod_exp,
+ rsa->_method_mod_n);
+ /* We MUST free n before any further use of rsa->n */
+ BN_free(n);
+ }
if (ret == NULL) {
RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_BN_LIB);
goto err;
}
- CRYPTO_THREADID_current(BN_BLINDING_thread_id(ret));
+
+ BN_BLINDING_set_current_thread(ret);
+
err:
BN_CTX_end(ctx);
- if (in_ctx == NULL)
+ if (ctx != in_ctx)
BN_CTX_free(ctx);
- if (rsa->e == NULL)
+ if (e != rsa->e)
BN_free(e);
- if (local_n)
- BN_free(local_n);
return ret;
}
projects / openssl.git / blobdiff