mirror of
https://github.com/guanzhi/GmSSL.git
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259 lines
6.9 KiB
C
259 lines
6.9 KiB
C
/* ====================================================================
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* Copyright (c) 2016 The GmSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the GmSSL Project.
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* (http://gmssl.org/)"
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*
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* 4. The name "GmSSL Project" must not be used to endorse or promote
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* products derived from this software without prior written
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* permission. For written permission, please contact
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* guanzhi1980@gmail.com.
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*
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* 5. Products derived from this software may not be called "GmSSL"
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* nor may "GmSSL" appear in their names without prior written
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* permission of the GmSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the GmSSL Project
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* (http://gmssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES
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* LOSS OF USE, DATA, OR PROFITS OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <openssl/evp.h>
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#include <openssl/gmsaf.h>
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#include <openssl/gmapi.h>
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#include "saf_lcl.h"
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/* 7.3.12 */
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int SAF_CreateHashObj(void **phHashObj,
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unsigned int uiAlgoType,
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unsigned char *pucPublicKey,
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unsigned int uiPublicKeyLen,
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unsigned char *pucID,
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unsigned int uiIDLen)
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{
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int ret = SAR_UnknownErr;
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const EVP_MD *md;
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EVP_MD_CTX *ctx = NULL;
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EVP_PKEY *pkey = NULL;
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if (!phHashObj) {
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SAFerr(SAF_F_SAF_CREATEHASHOBJ, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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if (!(md = EVP_get_digestbysgd(uiAlgoType))) {
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SAFerr(SAF_F_SAF_CREATEHASHOBJ, SAF_R_INVALID_ALGOR);
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return SAR_AlgoTypeErr;
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}
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if (!(ctx = EVP_MD_CTX_new())) {
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SAFerr(SAF_F_SAF_CREATEHASHOBJ, ERR_R_MALLOC_FAILURE);
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goto end;
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}
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/* limitation of the SAF hashing:
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* can not specify an engine, only use the default implementation
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*/
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if (!EVP_DigestInit_ex(ctx, md, NULL)) {
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SAFerr(SAF_F_SAF_CREATEHASHOBJ, ERR_R_EVP_LIB);
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goto end;
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}
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if (pucPublicKey) {
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unsigned char dgst[EVP_MAX_MD_SIZE];
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size_t dgstlen = sizeof(dgst);
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if (!pucID) {
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SAFerr(SAF_F_SAF_CREATEHASHOBJ, ERR_R_PASSED_NULL_PARAMETER);
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ret = SAR_IndataErr;
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goto end;
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}
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if (uiIDLen <= 0 || uiIDLen > SM2_MAX_ID_LENGTH
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|| strlen((char *)pucID) != uiIDLen
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|| uiPublicKeyLen <= 0 || uiPublicKeyLen > INT_MAX) {
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SAFerr(SAF_F_SAF_CREATEHASHOBJ, SAF_R_INVALID_INPUT_LENGTH);
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ret = SAR_IndataLenErr;
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goto end;
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}
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if (!(pkey = d2i_PUBKEY(NULL, (const unsigned char **)&pucPublicKey, (long)uiPublicKeyLen))
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|| EVP_PKEY_base_id(pkey) != EVP_PKEY_EC) {
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SAFerr(SAF_F_SAF_CREATEHASHOBJ, SAF_R_INVALID_PUBLIC_KEY);
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ret = SAR_IndataErr;
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goto end;
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}
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if (!SM2_compute_id_digest(md, (char *)pucID, uiIDLen, dgst, &dgstlen,
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EVP_PKEY_get0_EC_KEY(pkey))) {
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SAFerr(SAF_F_SAF_CREATEHASHOBJ, ERR_R_EC_LIB);
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goto end;
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}
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if (!EVP_DigestUpdate(ctx, dgst, dgstlen)) {
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SAFerr(SAF_F_SAF_CREATEHASHOBJ, ERR_R_EVP_LIB);
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goto end;
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}
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}
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*phHashObj = ctx;
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ctx = NULL;
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ret = SAR_Ok;
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end:
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if (ret != SAR_Ok) {
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*phHashObj = NULL;
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}
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EVP_MD_CTX_free(ctx);
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EVP_PKEY_free(pkey);
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return ret;
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}
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/* 7.3.13 */
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int SAF_DestroyHashObj(
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void *phHashObj)
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{
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if (!phHashObj) {
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SAFerr(SAF_F_SAF_DESTROYHASHOBJ, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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EVP_MD_CTX_free((EVP_MD_CTX *)phHashObj);
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return SAR_Ok;
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}
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/* 7.3.14 */
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int SAF_HashUpdate(
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void *phHashObj,
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const unsigned char *pucInData,
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unsigned int uiInDataLen)
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{
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if (!phHashObj || pucInData) {
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SAFerr(SAF_F_SAF_HASHUPDATE, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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if (uiInDataLen <= 0 || uiInDataLen > INT_MAX) {
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SAFerr(SAF_F_SAF_HASHUPDATE, SAF_R_INVALID_INPUT_LENGTH);
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return SAR_IndataLenErr;
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}
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if (!EVP_DigestUpdate((EVP_MD_CTX *)phHashObj, pucInData, uiInDataLen)) {
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SAFerr(SAF_F_SAF_HASHUPDATE, ERR_R_EVP_LIB);
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return SAR_HashErr;
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}
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return SAR_Ok;
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}
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/* 7.3.15 */
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int SAF_HashFinal(void *phHashObj,
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unsigned char *pucOutData,
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unsigned int *uiOutDataLen)
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{
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if (!phHashObj || !pucOutData || !uiOutDataLen) {
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SAFerr(SAF_F_SAF_HASHFINAL, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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if (*uiOutDataLen < EVP_MAX_MD_SIZE) {
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SAFerr(SAF_F_SAF_HASHFINAL, SAF_R_BUFFER_TOO_SMALL);
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return SAR_IndataLenErr;
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}
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if (!EVP_DigestFinal_ex((EVP_MD_CTX *)phHashObj, pucOutData, uiOutDataLen)) {
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SAFerr(SAF_F_SAF_HASHFINAL, ERR_R_EVP_LIB);
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return SAR_HashErr;
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}
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return SAR_Ok;
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}
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/* 7.3.11 */
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int SAF_Hash(
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unsigned int uiAlgoType,
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unsigned char *pucInData,
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unsigned int uiInDataLen,
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unsigned char *pucPublicKey,
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unsigned int uiPublicKeyLen,
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unsigned char *pubID,
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unsigned int uiIDLen,
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unsigned char *pucOutData,
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unsigned int *puiOutDataLen)
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{
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int ret;
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void *hHashObj = NULL;
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if ((ret = SAF_CreateHashObj(
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&hHashObj,
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uiAlgoType,
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pucPublicKey,
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uiPublicKeyLen,
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pubID,
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uiIDLen)) != SAR_Ok) {
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SAFerr(SAF_F_SAF_HASH, ERR_R_SAF_LIB);
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return ret;
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}
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if ((ret = SAF_HashUpdate(
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hHashObj,
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pucInData,
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uiInDataLen)) != SAR_Ok) {
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SAFerr(SAF_F_SAF_HASH, ERR_R_SAF_LIB);
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goto err;
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}
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if ((ret = SAF_HashFinal(
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hHashObj,
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pucOutData,
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puiOutDataLen)) != SAR_Ok) {
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SAFerr(SAF_F_SAF_HASH, ERR_R_SAF_LIB);
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goto err;
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}
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if ((ret = SAF_DestroyHashObj(
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hHashObj)) != SAR_Ok) {
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SAFerr(SAF_F_SAF_HASH, ERR_R_SAF_LIB);
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return ret;
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}
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return SAR_Ok;
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err:
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/* keep the first error */
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(void)SAF_DestroyHashObj(hHashObj);
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return ret;
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}
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