1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ssl/libcrypto/src/crypto/dsa/dsa_vrf.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,94 @@
1.4 +/* crypto/dsa/dsa_vrf.c */
1.5 +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
1.6 + * All rights reserved.
1.7 + *
1.8 + * This package is an SSL implementation written
1.9 + * by Eric Young (eay@cryptsoft.com).
1.10 + * The implementation was written so as to conform with Netscapes SSL.
1.11 + *
1.12 + * This library is free for commercial and non-commercial use as long as
1.13 + * the following conditions are aheared to. The following conditions
1.14 + * apply to all code found in this distribution, be it the RC4, RSA,
1.15 + * lhash, DES, etc., code; not just the SSL code. The SSL documentation
1.16 + * included with this distribution is covered by the same copyright terms
1.17 + * except that the holder is Tim Hudson (tjh@cryptsoft.com).
1.18 + *
1.19 + * Copyright remains Eric Young's, and as such any Copyright notices in
1.20 + * the code are not to be removed.
1.21 + * If this package is used in a product, Eric Young should be given attribution
1.22 + * as the author of the parts of the library used.
1.23 + * This can be in the form of a textual message at program startup or
1.24 + * in documentation (online or textual) provided with the package.
1.25 + *
1.26 + * Redistribution and use in source and binary forms, with or without
1.27 + * modification, are permitted provided that the following conditions
1.28 + * are met:
1.29 + * 1. Redistributions of source code must retain the copyright
1.30 + * notice, this list of conditions and the following disclaimer.
1.31 + * 2. Redistributions in binary form must reproduce the above copyright
1.32 + * notice, this list of conditions and the following disclaimer in the
1.33 + * documentation and/or other materials provided with the distribution.
1.34 + * 3. All advertising materials mentioning features or use of this software
1.35 + * must display the following acknowledgement:
1.36 + * "This product includes cryptographic software written by
1.37 + * Eric Young (eay@cryptsoft.com)"
1.38 + * The word 'cryptographic' can be left out if the rouines from the library
1.39 + * being used are not cryptographic related :-).
1.40 + * 4. If you include any Windows specific code (or a derivative thereof) from
1.41 + * the apps directory (application code) you must include an acknowledgement:
1.42 + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
1.43 + *
1.44 + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
1.45 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.46 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.47 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1.48 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.49 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.50 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.51 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.52 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.53 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.54 + * SUCH DAMAGE.
1.55 + *
1.56 + * The licence and distribution terms for any publically available version or
1.57 + * derivative of this code cannot be changed. i.e. this code cannot simply be
1.58 + * copied and put under another distribution licence
1.59 + * [including the GNU Public Licence.]
1.60 + */
1.61 +
1.62 +/* Original version from Steven Schoch <schoch@sheba.arc.nasa.gov> */
1.63 +
1.64 +#include <stdio.h>
1.65 +#include "cryptlib.h"
1.66 +#include <openssl/bn.h>
1.67 +#include <openssl/dsa.h>
1.68 +#include <openssl/rand.h>
1.69 +#include <openssl/asn1.h>
1.70 +#include <openssl/asn1_mac.h>
1.71 +
1.72 +EXPORT_C int DSA_do_verify(const unsigned char *dgst, int dgst_len, DSA_SIG *sig,
1.73 + DSA *dsa)
1.74 + {
1.75 + return dsa->meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
1.76 + }
1.77 +
1.78 +/* data has already been hashed (probably with SHA or SHA-1). */
1.79 +/* returns
1.80 + * 1: correct signature
1.81 + * 0: incorrect signature
1.82 + * -1: error
1.83 + */
1.84 +EXPORT_C int DSA_verify(int type, const unsigned char *dgst, int dgst_len,
1.85 + const unsigned char *sigbuf, int siglen, DSA *dsa)
1.86 + {
1.87 + DSA_SIG *s;
1.88 + int ret=-1;
1.89 +
1.90 + s = DSA_SIG_new();
1.91 + if (s == NULL) return(ret);
1.92 + if (d2i_DSA_SIG(&s,&sigbuf,siglen) == NULL) goto err;
1.93 + ret=DSA_do_verify(dgst,dgst_len,s,dsa);
1.94 +err:
1.95 + DSA_SIG_free(s);
1.96 + return(ret);
1.97 + }