1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ssl/libcrypto/src/crypto/hmac/hmac.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,214 @@
1.4 +/* crypto/hmac/hmac.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 + © Portions copyright (c) 2006 Nokia Corporation. All rights reserved.
1.63 + */
1.64 +
1.65 +#include <stdio.h>
1.66 +#include <stdlib.h>
1.67 +#include <string.h>
1.68 +#include "cryptlib.h"
1.69 +#include <openssl/hmac.h>
1.70 +#ifdef SYMBIAN
1.71 +#include <errno.h>
1.72 +#endif
1.73 +#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
1.74 +#include "libcrypto_wsd_macros.h"
1.75 +#include "libcrypto_wsd.h"
1.76 +#endif
1.77 +
1.78 +
1.79 +EXPORT_C void HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
1.80 + const EVP_MD *md, ENGINE *impl)
1.81 + {
1.82 + int i,j,reset=0;
1.83 + unsigned char pad[HMAC_MAX_MD_CBLOCK];
1.84 +
1.85 + if (md != NULL)
1.86 + {
1.87 + reset=1;
1.88 + ctx->md=md;
1.89 + }
1.90 + else
1.91 + md=ctx->md;
1.92 +
1.93 + if (key != NULL)
1.94 + {
1.95 + reset=1;
1.96 + j=EVP_MD_block_size(md);
1.97 + OPENSSL_assert(j <= (int)sizeof(ctx->key));
1.98 + if (j < len)
1.99 + {
1.100 + EVP_DigestInit_ex(&ctx->md_ctx,md, impl);
1.101 + EVP_DigestUpdate(&ctx->md_ctx,key,len);
1.102 + EVP_DigestFinal_ex(&(ctx->md_ctx),ctx->key,
1.103 + &ctx->key_length);
1.104 + }
1.105 + else
1.106 + {
1.107 + OPENSSL_assert(len>=0 && len<=(int)sizeof(ctx->key));
1.108 + memcpy(ctx->key,key,len);
1.109 + ctx->key_length=len;
1.110 + }
1.111 + if(ctx->key_length != HMAC_MAX_MD_CBLOCK)
1.112 + memset(&ctx->key[ctx->key_length], 0,
1.113 + HMAC_MAX_MD_CBLOCK - ctx->key_length);
1.114 + }
1.115 +
1.116 + if (reset)
1.117 + {
1.118 + for (i=0; i<HMAC_MAX_MD_CBLOCK; i++)
1.119 + pad[i]=0x36^ctx->key[i];
1.120 + EVP_DigestInit_ex(&ctx->i_ctx,md, impl);
1.121 + EVP_DigestUpdate(&ctx->i_ctx,pad,EVP_MD_block_size(md));
1.122 +
1.123 + for (i=0; i<HMAC_MAX_MD_CBLOCK; i++)
1.124 + pad[i]=0x5c^ctx->key[i];
1.125 + EVP_DigestInit_ex(&ctx->o_ctx,md, impl);
1.126 + EVP_DigestUpdate(&ctx->o_ctx,pad,EVP_MD_block_size(md));
1.127 + }
1.128 + EVP_MD_CTX_copy_ex(&ctx->md_ctx,&ctx->i_ctx);
1.129 + }
1.130 +
1.131 +EXPORT_C void HMAC_Init(HMAC_CTX *ctx, const void *key, int len,
1.132 + const EVP_MD *md)
1.133 + {
1.134 + if(key && md)
1.135 + HMAC_CTX_init(ctx);
1.136 + HMAC_Init_ex(ctx,key,len,md, NULL);
1.137 + }
1.138 +
1.139 +EXPORT_C void HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len)
1.140 + {
1.141 + EVP_DigestUpdate(&ctx->md_ctx,data,len);
1.142 + }
1.143 +
1.144 +EXPORT_C void HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len)
1.145 + {
1.146 + int j;
1.147 + unsigned int i;
1.148 + unsigned char buf[EVP_MAX_MD_SIZE];
1.149 +
1.150 + j=EVP_MD_block_size(ctx->md);
1.151 +
1.152 + EVP_DigestFinal_ex(&ctx->md_ctx,buf,&i);
1.153 + EVP_MD_CTX_copy_ex(&ctx->md_ctx,&ctx->o_ctx);
1.154 + EVP_DigestUpdate(&ctx->md_ctx,buf,i);
1.155 + EVP_DigestFinal_ex(&ctx->md_ctx,md,len);
1.156 + }
1.157 +
1.158 +EXPORT_C void HMAC_CTX_init(HMAC_CTX *ctx)
1.159 + {
1.160 + EVP_MD_CTX_init(&ctx->i_ctx);
1.161 + EVP_MD_CTX_init(&ctx->o_ctx);
1.162 + EVP_MD_CTX_init(&ctx->md_ctx);
1.163 + }
1.164 +
1.165 +EXPORT_C void HMAC_CTX_cleanup(HMAC_CTX *ctx)
1.166 + {
1.167 + EVP_MD_CTX_cleanup(&ctx->i_ctx);
1.168 + EVP_MD_CTX_cleanup(&ctx->o_ctx);
1.169 + EVP_MD_CTX_cleanup(&ctx->md_ctx);
1.170 + memset(ctx,0,sizeof *ctx);
1.171 + }
1.172 +
1.173 +#ifdef EMULATOR
1.174 +GET_STATIC_ARRAY_FROM_TLS(m,hmac,unsigned char)
1.175 +#define m (GET_WSD_VAR_NAME(m,hmac, s)())
1.176 +#endif
1.177 +
1.178 +EXPORT_C unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len,
1.179 + const unsigned char *d, size_t n, unsigned char *md,
1.180 + unsigned int *md_len)
1.181 + {
1.182 + HMAC_CTX c;
1.183 +#ifdef SYMBIAN
1.184 + int save_errno=0;
1.185 +#endif
1.186 +#ifndef EMULATOR
1.187 + static unsigned char m[EVP_MAX_MD_SIZE];
1.188 +#endif
1.189 +#ifdef SYMBIAN
1.190 + save_errno=errno; //save errno..
1.191 + errno = 0; //clear it for now
1.192 +#endif
1.193 + if (md == NULL) md=m;
1.194 + HMAC_CTX_init(&c);
1.195 + HMAC_Init(&c,key,key_len,evp_md);
1.196 +#ifdef SYMBIAN
1.197 + if(errno==ENOMEM)
1.198 + {
1.199 + return md;
1.200 + }
1.201 +#endif
1.202 + HMAC_Update(&c,d,n);
1.203 +#ifdef SYMBIAN
1.204 + if(errno==ENOMEM)
1.205 + {
1.206 + return md;
1.207 + }
1.208 +#endif
1.209 + HMAC_Final(&c,md,md_len);
1.210 + HMAC_CTX_cleanup(&c);
1.211 +#ifdef SYMBIAN
1.212 + if(errno==0)
1.213 + errno = save_errno; //reset back errno to what it was prreviously only if it has not changed now
1.214 +#endif
1.215 + return(md);
1.216 + }
1.217 +