/* * Licensed Materials - Property of IBM * * trousers - An open source TCG Software Stack * * (C) Copyright International Business Machines Corp. 2006 * */#include <stdlib.h>#include <stdio.h>#include <string.h>#include <fcntl.h>#include <errno.h>#include <openssl/evp.h>#include "trousers/tss.h"#include "trousers_types.h"#include "tcs_tsp.h"#include "tcslog.h"/* * Hopefully this will make the code clearer since * OpenSSL returns 1 on success */#define EVP_SUCCESS 1TSS_RESULTHash(UINT32 HashType, UINT32 BufSize, BYTE* Buf, BYTE* Digest){	EVP_MD_CTX md_ctx;	unsigned int result_size;	int rv;	switch (HashType) {		case TSS_HASH_SHA1:			rv = EVP_DigestInit(&md_ctx, EVP_sha1());			break;		default:			rv = TSPERR(TSS_E_BAD_PARAMETER);			goto out;			break;	}	if (rv != EVP_SUCCESS) {		rv = TSPERR(TSS_E_INTERNAL_ERROR);		goto out;	}	rv = EVP_DigestUpdate(&md_ctx, Buf, BufSize);	if (rv != EVP_SUCCESS) {		rv = TSPERR(TSS_E_INTERNAL_ERROR);		goto out;	}	result_size = EVP_MD_CTX_size(&md_ctx);	rv = EVP_DigestFinal(&md_ctx, Digest, &result_size);	if (rv != EVP_SUCCESS) {		rv = TSPERR(TSS_E_INTERNAL_ERROR);	} else		rv = TSS_SUCCESS;out:	return rv;}