lib/libcrypto/evp/m_dss1.c

   1 /* $OpenBSD: m_dss1.c,v 1.16 2014/07/11 08:44:48 jsing Exp $ */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60
  61 #include <openssl/opensslconf.h>
  62
  63 #ifndef OPENSSL_NO_SHA
  64
  65 #include <openssl/evp.h>
  66 #include <openssl/objects.h>
  67 #include <openssl/sha.h>
  68
  69 #ifndef OPENSSL_NO_DSA
  70 #include <openssl/dsa.h>
  71 #endif
  72
  73 static int
  74 init(EVP_MD_CTX *ctx)
  75 {
  76         return SHA1_Init(ctx->md_data);
  77 }
  78
  79 static int
  80 update(EVP_MD_CTX *ctx, const void *data, size_t count)
  81 {
  82         return SHA1_Update(ctx->md_data, data, count);
  83 }
  84
  85 static int
  86 final(EVP_MD_CTX *ctx, unsigned char *md)
  87 {
  88         return SHA1_Final(md, ctx->md_data);
  89 }
  90
  91 static const EVP_MD dss1_md = {
  92         .type = NID_dsa,
  93         .pkey_type = NID_dsaWithSHA1,
  94         .md_size = SHA_DIGEST_LENGTH,
  95         .flags = EVP_MD_FLAG_PKEY_DIGEST,
  96         .init = init,
  97         .update = update,
  98         .final = final,
  99         .copy = NULL,
 100         .cleanup = NULL,
 101 #ifndef OPENSSL_NO_DSA
 102         .sign = (evp_sign_method *)DSA_sign,
 103         .verify = (evp_verify_method *)DSA_verify,
 104         .required_pkey_type = {
 105                 EVP_PKEY_DSA, EVP_PKEY_DSA2, EVP_PKEY_DSA3, EVP_PKEY_DSA4, 0,
 106         },
 107 #endif
 108         .block_size = SHA_CBLOCK,
 109         .ctx_size = sizeof(EVP_MD *) + sizeof(SHA_CTX),
 110 };
 111
 112 const EVP_MD *
 113 EVP_dss1(void)
 114 {
 115         return (&dss1_md);
 116 }
 117 #endif