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/* $Id$ */
/** @file
* IPRT - SHA-256 hash functions.
*/
/*
* Copyright (C) 2009-2016 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "internal/iprt.h"
#include <openssl/sha.h>
#define RT_SHA256_PRIVATE_CONTEXT
#include <iprt/sha.h>
#include <iprt/assert.h>
#include <iprt/string.h>
AssertCompile(RT_SIZEOFMEMB(RTSHA256CONTEXT, abPadding) >= RT_SIZEOFMEMB(RTSHA256CONTEXT, Private));
RTDECL(void) RTSha256(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA256_HASH_SIZE])
{
RTSHA256CONTEXT Ctx;
RTSha256Init(&Ctx);
RTSha256Update(&Ctx, pvBuf, cbBuf);
RTSha256Final(&Ctx, pabDigest);
}
RT_EXPORT_SYMBOL(RTSha256);
RTDECL(bool) RTSha256Check(const void *pvBuf, size_t cbBuf, uint8_t const pabDigest[RTSHA256_HASH_SIZE])
{
RTSHA256CONTEXT Ctx;
RTSha256Init(&Ctx);
RTSha256Update(&Ctx, pvBuf, cbBuf);
uint8_t abActualDigest[RTSHA256_HASH_SIZE];
RTSha256Final(&Ctx, abActualDigest);
bool fRet = memcmp(pabDigest, abActualDigest, RTSHA256_HASH_SIZE) == 0;
RT_ZERO(abActualDigest);
return fRet;
}
RT_EXPORT_SYMBOL(RTSha256Check);
RTDECL(void) RTSha256Init(PRTSHA256CONTEXT pCtx)
{
SHA256_Init(&pCtx->Private);
}
RT_EXPORT_SYMBOL(RTSha256Init);
RTDECL(void) RTSha256Update(PRTSHA256CONTEXT pCtx, const void *pvBuf, size_t cbBuf)
{
SHA256_Update(&pCtx->Private, pvBuf, cbBuf);
}
RT_EXPORT_SYMBOL(RTSha256Update);
RTDECL(void) RTSha256Final(PRTSHA256CONTEXT pCtx, uint8_t pabDigest[32])
{
SHA256_Final((unsigned char *)&pabDigest[0], &pCtx->Private);
}
RT_EXPORT_SYMBOL(RTSha256Final);
/*
* We have to expose the same API as alt-sha256.cpp, so the SHA-224
* implementation also lives here. (SHA-224 is just a truncated SHA-256 with
* different initial values.)
*/
RTDECL(void) RTSha224(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTSHA224_HASH_SIZE])
{
RTSHA224CONTEXT Ctx;
RTSha224Init(&Ctx);
RTSha224Update(&Ctx, pvBuf, cbBuf);
RTSha224Final(&Ctx, pabDigest);
}
RT_EXPORT_SYMBOL(RTSha224);
RTDECL(bool) RTSha224Check(const void *pvBuf, size_t cbBuf, uint8_t const pabDigest[RTSHA224_HASH_SIZE])
{
RTSHA224CONTEXT Ctx;
RTSha224Init(&Ctx);
RTSha224Update(&Ctx, pvBuf, cbBuf);
uint8_t abActualDigest[RTSHA224_HASH_SIZE];
RTSha224Final(&Ctx, abActualDigest);
bool fRet = memcmp(pabDigest, abActualDigest, RTSHA224_HASH_SIZE) == 0;
RT_ZERO(abActualDigest);
return fRet;
}
RT_EXPORT_SYMBOL(RTSha224Check);
RTDECL(void) RTSha224Init(PRTSHA224CONTEXT pCtx)
{
SHA224_Init(&pCtx->Private);
}
RT_EXPORT_SYMBOL(RTSha224Init);
RTDECL(void) RTSha224Update(PRTSHA224CONTEXT pCtx, const void *pvBuf, size_t cbBuf)
{
SHA224_Update(&pCtx->Private, pvBuf, cbBuf);
}
RT_EXPORT_SYMBOL(RTSha224Update);
RTDECL(void) RTSha224Final(PRTSHA224CONTEXT pCtx, uint8_t pabDigest[32])
{
SHA224_Final((unsigned char *)&pabDigest[0], &pCtx->Private);
}
RT_EXPORT_SYMBOL(RTSha224Final);
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