mirror of
https://github.com/guanzhi/GmSSL.git
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add gmapi impls
This commit is contained in:
Zhi Guan
272
crypto/saf/saf_enc.c
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272
crypto/saf/saf_enc.c
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/* ====================================================================
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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 <openssl/evp.h>
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#include <openssl/rand.h>
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#include <openssl/gmsaf.h>
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#include <openssl/gmapi.h>
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/* 7.3.39 */
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int SAF_SymmEncryptUpdate(
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void *hKeyHandle,
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const unsigned char *pucInData,
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unsigned int uiInDataLen,
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unsigned char *pucOutData,
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unsigned int *puiOutDataLen)
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{
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int ret = SAR_UnknownErr;
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SAF_KEY_HANDLE *hkey = (SAF_KEY_HANDLE *)hKeyHandle;
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unsigned char *out = pucOutData;
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int inlen, outlen;
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if (!hKeyHandle || !pucInData || !pucOutData || !puiOutDataLen) {
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SAFerr(SAF_F_SAF_SYMMENCRYPTUPDATE, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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if (uiInDataLen > INT_MAX) {
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SAFerr(SAF_F_SAF_SYMMENCRYPTUPDATE, SAF_R_INVALID_LENGTH);
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return SAR_IndataLenErr;
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}
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if (!hkey->cipher_ctx) {
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unsigned char iv[32];
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int ivlen;
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if (!(hkey->cipher_ctx = EVP_CIPHER_CTX_new())) {
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SAFerr(SAF_F_SAF_SYMMENCRYPTUPDATE, ERR_R_MALLOC_FAILURE);
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ret = SAR_MemoryErr;
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goto end;
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}
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/* generate random iv and output */
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ivlen = EVP_CIPHER_block_size(hkey->cipher);
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if (ivlen <= 0 || ivlen > sizeof(iv)) {
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SAFerr(SAF_F_SAF_SYMMENCRYPTUPDATE, SAF_R_INVALID_CONTEXT);
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ret = SAR_ObjErr;
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goto end;
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}
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if (!RAND_bytes(iv, ivlen)) {
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SAFerr(SAF_F_SAF_SYMMENCRYPTUPDATE, SAF_R_GEN_RANDOM);
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ret = SAR_GenRandErr;
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goto end;
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}
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/* output iv, update out pointer */
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memcpy(out, iv, ivlen);
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out += ivlen;
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if (!EVP_EncryptInit(hkey->cipher_ctx, hkey->cipher, hkey->key, iv)) {
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SAFerr(SAF_F_SAF_SYMMENCRYPTUPDATE, ERR_R_EVP_LIB);
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goto end;
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}
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}
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inlen = (int)uiInDataLen;
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if (!EVP_EncryptUpdate(hkey->cipher_ctx, out, &outlen, pucInData, inlen)) {
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SAFerr(SAF_F_SAF_SYMMENCRYPTUPDATE, ERR_R_EVP_LIB);
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goto end;
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}
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*puiOutDataLen = (unsigned int)outlen;
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ret = SAR_OK;
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end:
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if (ret != SAR_OK && hkey->cipher_ctx) {
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EVP_CIPHER_CTX_free(hkey->cipher_ctx);
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hkey->cipher_ctx = NULL;
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}
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return ret;
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}
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/* 7.3.40 */
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int SAF_SymmEncryptFinal(
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void *hKeyHandle,
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unsigned char *pucOutData,
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unsigned int *puiOutDataLen)
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{
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return 0;
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}
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/* 7.3.42 */
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int SAF_SymmDecryptUpdate(
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void *hKeyHandle,
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unsigned char *pucInData,
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unsigned int uiInDataLen,
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unsigned char *pucOutData,
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unsigned int *puiOutDataLen)
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{
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int ret = SAR_UnknownErr;
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SAF_KEY_HANDLE *hkey = (SAF_KEY_HANDLE *)hKeyHandle;
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unsigned char *in = pucInData;
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int inlen, outlen;
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if (!hKeyHandle || !pucInData || !pucOutData || !puiOutDataLen) {
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SAFerr(SAF_F_SAF_SYMMDECRYPTUPDATE, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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if (uiInDataLen > INT_MAX) {
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SAFerr(SAF_F_SAF_SYMMDECRYPTUPDATE, SAF_R_INVALID_LENGTH);
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return SAR_IndataLenErr;
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}
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inlen = (int)uiInDataLen;
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if (!hkey->cipher_ctx) {
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unsigned char iv[32];
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int ivlen;
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if (!(hkey->cipher_ctx = EVP_CIPHER_CTX_new())) {
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SAFerr(SAF_F_SAF_SYMMDECRYPTUPDATE, ERR_R_MALLOC_FAILURE);
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ret = SAR_MemoryErr;
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goto end;
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}
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/* get iv from input */
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ivlen = EVP_CIPHER_block_size(hkey->cipher);
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if (ivlen <= 0 || ivlen > sizeof(iv)) {
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SAFerr(SAF_F_SAF_SYMMDECRYPTUPDATE, SAF_R_INVALID_CONTEXT);
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ret = SAR_ObjErr;
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goto end;
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}
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memcpy(iv, in, ivlen);
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in += ivlen;
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inlen -= ivlen;
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if (!EVP_DecryptInit(hkey->cipher_ctx, hkey->cipher, hkey->key, iv)) {
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SAFerr(SAF_F_SAF_SYMMDECRYPTUPDATE, ERR_R_EVP_LIB);
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goto end;
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}
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}
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if (!EVP_DecryptUpdate(hkey->cipher_ctx, pucOutData, &outlen, in, inlen)) {
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SAFerr(SAF_F_SAF_SYMMDECRYPTUPDATE, ERR_R_EVP_LIB);
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goto end;
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}
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*puiOutDataLen = (unsigned int)outlen;
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ret = SAR_OK;
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end:
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if (ret != SAR_OK && hkey->cipher_ctx) {
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EVP_CIPHER_CTX_free(hkey->cipher_ctx);
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hkey->cipher_ctx = NULL;
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}
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return ret;
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}
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/* 7.3.43 */
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int SAF_SymmDecryptFinal(
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void *hKeyHandle,
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const unsigned char *pucInData,
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unsigned int uiInDataLen,
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unsigned char *pucOutData,
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unsigned int *puiOutDataLen)
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{
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return 0;
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}
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/* 7.3.38 */
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int SAF_SymmEncrypt(
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void *hKeyHandle,
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const unsigned char *pucInData,
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unsigned int uiInDataLen,
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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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unsigned char *out;
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unsigned int outlen;
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out = pucOutData;
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outlen = *puiOutDataLen;
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if ((ret = SAF_SymmEncryptUpdate(hKeyHandle, pucInData, uiInDataLen,
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out, &outlen)) != SAR_OK) {
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return ret;
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}
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out += outlen;
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if ((ret = SAF_SymmEncryptFinal(hKeyHandle, out, &outlen)) != SAR_OK) {
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return ret;
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}
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out += outlen;
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*puiOutDataLen = out - pucOutData;
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return SAR_OK;
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}
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/* 7.3.41 */
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int SAF_SymmDecrypt(
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void *hKeyHandle,
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unsigned char *pucInData,
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unsigned int uiInDataLen,
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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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unsigned char *out;
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unsigned int outlen;
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out = pucOutData;
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outlen = *puiOutDataLen;
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if ((ret = SAF_SymmDecryptUpdate(hKeyHandle, pucInData, uiInDataLen,
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out, &outlen)) != SAR_OK) {
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return ret;
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}
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out += outlen;
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if ((ret = SAF_SymmDecryptFinal(hKeyHandle, out, &outlen)) != SAR_OK) {
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return ret;
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}
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out += outlen;
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*puiOutDataLen = out - pucOutData;
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return SAR_OK;
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}
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