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| 1 /********************************************************************** |
| 2 * md_gost.c * |
| 3 * Copyright (c) 2005-2006 Cryptocom LTD * |
| 4 * This file is distributed under the same license as OpenSSL * |
| 5 * * |
| 6 * OpenSSL interface to GOST R 34.11-94 hash functions * |
| 7 * Requires OpenSSL 0.9.9 for compilation * |
| 8 **********************************************************************/ |
| 9 #include <string.h> |
| 10 #include "gost_lcl.h" |
| 11 #include "gosthash.h" |
| 12 #include "e_gost_err.h" |
| 13 |
| 14 /* implementation of GOST 34.11 hash function See gost_md.c*/ |
| 15 static int gost_digest_init(EVP_MD_CTX *ctx); |
| 16 static int gost_digest_update(EVP_MD_CTX *ctx, const void *data, size_t count); |
| 17 static int gost_digest_final(EVP_MD_CTX *ctx,unsigned char *md); |
| 18 static int gost_digest_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from); |
| 19 static int gost_digest_cleanup(EVP_MD_CTX *ctx); |
| 20 |
| 21 EVP_MD digest_gost= |
| 22 { |
| 23 NID_id_GostR3411_94, |
| 24 NID_undef, |
| 25 32, |
| 26 EVP_MD_FLAG_PKEY_METHOD_SIGNATURE, |
| 27 gost_digest_init, |
| 28 gost_digest_update, |
| 29 gost_digest_final, |
| 30 gost_digest_copy, |
| 31 gost_digest_cleanup, |
| 32 NULL, |
| 33 NULL, |
| 34 {NID_undef,NID_undef,0,0,0}, |
| 35 32, |
| 36 sizeof(struct ossl_gost_digest_ctx ), |
| 37 NULL |
| 38 }; |
| 39 |
| 40 int gost_digest_init(EVP_MD_CTX *ctx) |
| 41 { |
| 42 struct ossl_gost_digest_ctx *c = ctx->md_data; |
| 43 memset(&(c->dctx),0,sizeof(gost_hash_ctx)); |
| 44 gost_init(&(c->cctx),&GostR3411_94_CryptoProParamSet); |
| 45 c->dctx.cipher_ctx= &(c->cctx); |
| 46 return 1; |
| 47 } |
| 48 |
| 49 int gost_digest_update(EVP_MD_CTX *ctx,const void *data,size_t count) |
| 50 { |
| 51 return hash_block((gost_hash_ctx *)ctx->md_data,data,count); |
| 52 } |
| 53 |
| 54 int gost_digest_final(EVP_MD_CTX *ctx,unsigned char *md) |
| 55 { |
| 56 return finish_hash((gost_hash_ctx *)ctx->md_data,md); |
| 57 |
| 58 } |
| 59 |
| 60 int gost_digest_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from) |
| 61 { |
| 62 struct ossl_gost_digest_ctx *md_ctx=to->md_data; |
| 63 if (to->md_data && from->md_data) { |
| 64 memcpy(to->md_data,from->md_data,sizeof(struct ossl_gost_digest_
ctx)); |
| 65 md_ctx->dctx.cipher_ctx=&(md_ctx->cctx); |
| 66 } |
| 67 return 1; |
| 68 } |
| 69 |
| 70 int gost_digest_cleanup(EVP_MD_CTX *ctx) |
| 71 { |
| 72 if (ctx->md_data) |
| 73 memset(ctx->md_data,0,sizeof(struct ossl_gost_digest_ctx)); |
| 74 return 1; |
| 75 } |
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