mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-24 16:57:50 +00:00
122 lines
4.5 KiB
C
122 lines
4.5 KiB
C
/* crypto/dsa/dsa_sign.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.]
|
|
*/
|
|
|
|
/* Original version from Steven Schoch <schoch@sheba.arc.nasa.gov> */
|
|
|
|
#include "cryptlib.h"
|
|
#include <openssl/dsa.h>
|
|
#include <openssl/rand.h>
|
|
#include <openssl/bn.h>
|
|
|
|
DSA_SIG * DSA_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
|
|
{
|
|
#ifdef OPENSSL_FIPS
|
|
if (FIPS_mode() && !(dsa->meth->flags & DSA_FLAG_FIPS_METHOD)
|
|
&& !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW))
|
|
{
|
|
DSAerr(DSA_F_DSA_DO_SIGN, DSA_R_NON_FIPS_DSA_METHOD);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
return dsa->meth->dsa_do_sign(dgst, dlen, dsa);
|
|
}
|
|
|
|
int DSA_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp)
|
|
{
|
|
#ifdef OPENSSL_FIPS
|
|
if (FIPS_mode() && !(dsa->meth->flags & DSA_FLAG_FIPS_METHOD)
|
|
&& !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW))
|
|
{
|
|
DSAerr(DSA_F_DSA_SIGN_SETUP, DSA_R_NON_FIPS_DSA_METHOD);
|
|
return 0;
|
|
}
|
|
#endif
|
|
if (dsa->flags & DSA_FLAG_NONCE_FROM_HASH)
|
|
{
|
|
/* You cannot precompute the DSA nonce if it is required to
|
|
* depend on the message. */
|
|
DSAerr(DSA_F_DSA_SIGN_SETUP, DSA_R_NONCE_CANNOT_BE_PRECOMPUTED);
|
|
return 0;
|
|
}
|
|
return dsa->meth->dsa_sign_setup(dsa, ctx_in, kinvp, rp, NULL, 0);
|
|
}
|
|
|
|
DSA_SIG *DSA_SIG_new(void)
|
|
{
|
|
DSA_SIG *sig;
|
|
sig = OPENSSL_malloc(sizeof(DSA_SIG));
|
|
if (!sig)
|
|
return NULL;
|
|
sig->r = NULL;
|
|
sig->s = NULL;
|
|
return sig;
|
|
}
|
|
|
|
void DSA_SIG_free(DSA_SIG *sig)
|
|
{
|
|
if (sig)
|
|
{
|
|
if (sig->r)
|
|
BN_free(sig->r);
|
|
if (sig->s)
|
|
BN_free(sig->s);
|
|
OPENSSL_free(sig);
|
|
}
|
|
}
|
|
|