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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/crypto/openssl/sha1/shs.c
*
* Copyright (C) 2009 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#include "shs.h"
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <string.h>
#define h0init 0x67452301L
#define h1init 0xEFCDAB89L
#define h2init 0x98BADCFEL
#define h3init 0x10325476L
#define h4init 0xC3D2E1F0L
/* Initialize the SHS values */
void shsInit(SHS_INFO *shsInfo)
{
EVP_MD_CTX_init(&shsInfo->ossl_sha1_ctx );
EVP_DigestInit_ex(&shsInfo->ossl_sha1_ctx , EVP_sha1(), NULL);
shsInfo->digestLen = 0;
memset(shsInfo->digestBuf, 0 , sizeof(shsInfo->digestBuf));
}
/* Update SHS for a block of data */
void shsUpdate(SHS_INFO *shsInfo, const SHS_BYTE *buffer, unsigned int count)
{
EVP_DigestUpdate(&shsInfo->ossl_sha1_ctx , buffer, count);
}
/* Final wrapup - pad to SHS_DATASIZE-byte boundary with the bit pattern
1 0* (64-bit count of bits processed, MSB-first) */
void shsFinal(SHS_INFO *shsInfo)
{
EVP_DigestFinal_ex(&shsInfo->ossl_sha1_ctx ,(unsigned char *)shsInfo->digestBuf , &shsInfo->digestLen);
EVP_MD_CTX_cleanup(&shsInfo->ossl_sha1_ctx );
}
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