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148 lines
3.4 KiB
C++
148 lines
3.4 KiB
C++
/* Copyright (c) 2012, Oracle and/or its affiliates.
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Copyright (c) 2014, SkySQL Ab.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
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/**
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@file
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@brief
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Wrapper functions for OpenSSL, YaSSL implementations. Also provides a
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Compatibility layer to make available YaSSL's SHA1 implementation.
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*/
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#include <my_global.h>
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#include <sha1.h>
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#include <stdarg.h>
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#if defined(HAVE_YASSL)
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#include "sha.hpp"
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typedef TaoCrypt::SHA SHA_CTX;
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static void sha1_init(SHA_CTX *context)
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{
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context->Init();
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}
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/*
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this is a variant of sha1_init to be used in this file only.
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does nothing for yassl, because the context's constructor was called automatically.
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*/
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static void sha1_init_fast(SHA_CTX *context)
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{
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}
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static void sha1_input(SHA_CTX *context, const uchar *buf, unsigned len)
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{
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context->Update((const TaoCrypt::byte *) buf, len);
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}
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static void sha1_result(SHA_CTX *context, uchar digest[SHA1_HASH_SIZE])
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{
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context->Final((TaoCrypt::byte *) digest);
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}
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#elif defined(HAVE_OPENSSL)
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#include <openssl/sha.h>
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static void sha1_init(SHA_CTX *context)
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{
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SHA1_Init(context);
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}
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static void sha1_init_fast(SHA_CTX *context)
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{
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sha1_init(context);
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}
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static void sha1_input(SHA_CTX *context, const uchar *buf, unsigned len)
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{
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SHA1_Update(context, buf, len);
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}
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static void sha1_result(SHA_CTX *context, uchar digest[SHA1_HASH_SIZE])
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{
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SHA1_Final(digest, context);
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}
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#endif /* HAVE_YASSL */
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/**
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Wrapper function to compute SHA1 message digest.
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@param digest [out] Computed SHA1 digest
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@param buf [in] Message to be computed
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@param len [in] Length of the message
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@return void
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*/
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void my_sha1(uchar *digest, const char *buf, size_t len)
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{
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SHA_CTX sha1_context;
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sha1_init_fast(&sha1_context);
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sha1_input(&sha1_context, (const uchar *)buf, len);
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sha1_result(&sha1_context, digest);
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}
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/**
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Wrapper function to compute SHA1 message digest for
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two messages in order to emulate sha1(msg1, msg2).
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@param digest [out] Computed SHA1 digest
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@param buf1 [in] First message
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@param len1 [in] Length of first message
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@param buf2 [in] Second message
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@param len2 [in] Length of second message
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@return void
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*/
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void my_sha1_multi(uchar *digest, ...)
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{
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va_list args;
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va_start(args, digest);
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SHA_CTX sha1_context;
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const uchar *str;
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sha1_init_fast(&sha1_context);
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for (str= va_arg(args, const uchar*); str; str= va_arg(args, const uchar*))
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sha1_input(&sha1_context, str, va_arg(args, size_t));
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sha1_result(&sha1_context, digest);
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va_end(args);
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}
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size_t my_sha1_context_size()
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{
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return sizeof(SHA_CTX);
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}
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void my_sha1_init(void *context)
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{
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sha1_init((SHA_CTX *)context);
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}
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void my_sha1_input(void *context, const uchar *buf, size_t len)
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{
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sha1_input((SHA_CTX *)context, buf, len);
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}
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void my_sha1_result(void *context, uchar *digest)
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{
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sha1_result((SHA_CTX *)context, digest);
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}
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