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https://github.com/guanzhi/GmSSL.git
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365 lines
10 KiB
C
365 lines
10 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/rand.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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/* 7.3.4 */
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int SAF_Base64_CreateBase64Obj(
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void **phBase64Obj)
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{
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int ret = SAR_UnknownErr;
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SAF_BASE64OBJ *obj = NULL;
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if (!(obj = OPENSSL_malloc(sizeof(*obj)))) {
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SAFerr(SAF_F_SAF_BASE64_CREATEBASE64OBJ, ERR_R_MALLOC_FAILURE);
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return SAR_MemoryErr;
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}
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if (!(obj->ctx = EVP_ENCODE_CTX_new())) {
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SAFerr(SAF_F_SAF_BASE64_CREATEBASE64OBJ, 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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obj->inited = 0;
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*phBase64Obj = obj;
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ret = SAR_OK;
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end:
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if (ret != SAR_OK) {
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EVP_ENCODE_CTX_free(obj->ctx);
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OPENSSL_free(obj);
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}
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return ret;
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}
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/* 7.3.5 */
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/* always return success for software implementation */
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int SAF_Base64_DestroyBase64Obj(
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void *hBase64Obj)
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{
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SAF_BASE64OBJ *obj = (SAF_BASE64OBJ *)hBase64Obj;
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if (obj) {
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EVP_ENCODE_CTX_free(obj->ctx);
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}
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OPENSSL_free(obj);
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return SAR_OK;
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}
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/* 7.3.6 */
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int SAF_Base64_EncodeUpdate(
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void *hBase64Obj,
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unsigned char *pucInData,
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unsigned int puiInDataLen,
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unsigned char *pucOutData,
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unsigned int *puiOutDataLen)
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{
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SAF_BASE64OBJ *obj = (SAF_BASE64OBJ *)hBase64Obj;
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int inlen, outlen;
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if (!hBase64Obj || !pucInData || !pucOutData || !puiOutDataLen) {
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SAFerr(SAF_F_SAF_BASE64_ENCODEUPDATE, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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/* GMAPI dont check function specific length, leave to EVP */
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if (puiInDataLen > INT_MAX) {
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SAFerr(SAF_F_SAF_BASE64_ENCODEUPDATE, SAF_R_INT_OVERFLOW);
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return SAR_IndataLenErr;
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}
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/* GMAPI dont check function specific length, leave to EVP */
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if (*puiOutDataLen > INT_MAX) {
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SAFerr(SAF_F_SAF_BASE64_ENCODEUPDATE, SAF_R_INT_OVERFLOW);
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return SAR_IndataLenErr;
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}
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/* check handle */
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if (!obj->ctx) {
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SAFerr(SAF_F_SAF_BASE64_ENCODEUPDATE, SAF_R_INVALID_HANDLE);
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return SAR_ObjErr;
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}
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if (!obj->inited) {
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EVP_EncodeInit(obj->ctx);
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obj->inited = 1;
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}
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inlen = (int)puiInDataLen;
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outlen = (int)(*puiOutDataLen);
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//TODO: check outlen, or EVP will fail without error messages
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if (!EVP_EncodeUpdate(obj->ctx, pucOutData, &outlen, pucInData, inlen)) {
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SAFerr(SAF_F_SAF_BASE64_ENCODEUPDATE, ERR_R_EVP_LIB);
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return SAR_UnknownErr;
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}
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*puiOutDataLen = (unsigned int)outlen;
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return SAR_OK;
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}
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/* 7.3.7 */
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int SAF_Base64_EncodeFinal(
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void *hBase64Obj,
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unsigned char *pucOutData,
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unsigned int *puiOutDataLen)
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{
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SAF_BASE64OBJ *obj = (SAF_BASE64OBJ *)hBase64Obj;
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int len;
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if (!hBase64Obj || !pucOutData || !puiOutDataLen) {
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SAFerr(SAF_F_SAF_BASE64_ENCODEFINAL, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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if (*puiOutDataLen > INT_MAX) {
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SAFerr(SAF_F_SAF_BASE64_ENCODEFINAL, SAF_R_INT_OVERFLOW);
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return SAR_IndataLenErr;
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}
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if (*puiOutDataLen < 66) {
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SAFerr(SAF_F_SAF_BASE64_ENCODEFINAL, SAF_R_BUFFER_TOO_SMALL);
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return SAR_IndataLenErr;
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}
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if (!obj->ctx || !obj->inited) {
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SAFerr(SAF_F_SAF_BASE64_ENCODEFINAL, SAF_R_INVALID_HANDLE);
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return SAR_ObjErr;
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}
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/* the max output length of EVP_EncodeFinal() is 66
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* this function return void, so we need to check `*outlen`
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*/
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len = (int)(*puiOutDataLen);
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//TODO: check outlen, or EVP will fail without error messages
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EVP_EncodeFinal(obj->ctx, pucOutData, &len);
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*puiOutDataLen = (unsigned int)len;
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return SAR_OK;
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}
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/* 7.3.8 */
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int SAF_Base64_DecodeUpdate(
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void *hBase64Obj,
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unsigned char *pucInData,
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unsigned int puiInDataLen,
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unsigned char *pucOutData,
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unsigned int *puiOutDataLen)
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{
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SAF_BASE64OBJ *obj = (SAF_BASE64OBJ *)hBase64Obj;
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int inlen, outlen;
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if (!hBase64Obj || !pucInData || !pucOutData || !puiOutDataLen) {
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SAFerr(SAF_F_SAF_BASE64_DECODEUPDATE, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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/* GMAPI dont check function specific length, leave to EVP */
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if (puiInDataLen > INT_MAX) {
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SAFerr(SAF_F_SAF_BASE64_DECODEUPDATE, SAF_R_INT_OVERFLOW);
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return SAR_IndataLenErr;
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}
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/* GMAPI dont check function specific length, leave to EVP */
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if (*puiOutDataLen > INT_MAX) {
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SAFerr(SAF_F_SAF_BASE64_DECODEUPDATE, SAF_R_INT_OVERFLOW);
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return SAR_IndataLenErr;
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}
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if (!obj->ctx) {
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SAFerr(SAF_F_SAF_BASE64_DECODEUPDATE, SAF_R_INVALID_HANDLE);
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return SAR_ObjErr;
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}
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if (!obj->inited) {
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EVP_DecodeInit(obj->ctx);
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obj->inited = 1;
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}
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inlen = (int)puiInDataLen;
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outlen = (int)(*puiOutDataLen);
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//TODO: check outlen, or EVP will fail without error messages
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/*
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* EVP_DecodeUpdate() return -1 for error, 0 or 1 for success
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* 0 means the last char of the input is `=`
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*/
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if (EVP_DecodeUpdate(obj->ctx, pucOutData, &outlen, pucInData, inlen) < 0) {
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SAFerr(SAF_F_SAF_BASE64_DECODEUPDATE, ERR_R_EVP_LIB);
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return SAR_UnknownErr;
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}
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*puiOutDataLen = (unsigned int)outlen;
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return SAR_OK;
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}
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/* 7.3.9 */
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int SAF_Base64_DecodeFinal(
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void *hBase64Obj,
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unsigned char *pucOutData,
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unsigned int *puiOutDataLen)
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{
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SAF_BASE64OBJ *obj = (SAF_BASE64OBJ *)hBase64Obj;
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int len;
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if (!hBase64Obj || !pucOutData || !puiOutDataLen) {
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SAFerr(SAF_F_SAF_BASE64_DECODEFINAL, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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if (*puiOutDataLen > INT_MAX) {
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SAFerr(SAF_F_SAF_BASE64_DECODEFINAL, SAF_R_INT_OVERFLOW);
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return SAR_IndataLenErr;
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}
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if (!obj->ctx || !obj->inited) {
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SAFerr(SAF_F_SAF_BASE64_DECODEFINAL, SAF_R_INVALID_HANDLE);
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return SAR_ObjErr;
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}
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len = (int)(*puiOutDataLen);
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//TODO: check outlen, or EVP will fail without error messages
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if (!EVP_DecodeFinal(obj->ctx, pucOutData, &len)) {
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SAFerr(SAF_F_SAF_BASE64_DECODEFINAL, ERR_R_EVP_LIB);
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return SAR_UnknownErr;
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}
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*puiOutDataLen = (unsigned int)len;
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return SAR_OK;
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}
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/* 7.3.2 */
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int SAF_Base64_Encode(
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unsigned char *pucInData,
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unsigned int puiInDataLen,
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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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void *handle = NULL;
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unsigned char *p;
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unsigned int len;
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if (!pucInData || !pucOutData || !puiOutDataLen) {
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SAFerr(SAF_F_SAF_BASE64_ENCODE, ERR_R_PASSED_NULL_PARAMETER);
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return SAR_IndataErr;
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}
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if ((ret = SAF_Base64_CreateBase64Obj(&handle)) != SAR_OK) {
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SAFerr(SAF_F_SAF_BASE64_ENCODE, ERR_R_GMAPI_LIB);
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goto end;
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}
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p = pucOutData;
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len = *puiOutDataLen;
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if ((ret = SAF_Base64_EncodeUpdate(handle, pucInData, puiInDataLen,
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p, &len)) != SAR_OK) {
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SAFerr(SAF_F_SAF_BASE64_ENCODE, ERR_R_GMAPI_LIB);
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goto end;
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}
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p += len;
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len = *puiOutDataLen - len;
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if ((ret = SAF_Base64_EncodeFinal(handle, p, &len)) != SAR_OK) {
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SAFerr(SAF_F_SAF_BASE64_ENCODE, ERR_R_GMAPI_LIB);
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goto end;
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}
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p += len;
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*puiOutDataLen = p - pucOutData;
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ret = SAR_OK;
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end:
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SAF_Base64_DestroyBase64Obj(handle);
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return ret;
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}
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/* 7.3.3 */
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int SAF_Base64_Decode(
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unsigned char *pucInData,
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unsigned int puiInDataLen,
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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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void *handle = NULL;
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unsigned char *p;
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unsigned int len;
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if ((ret = SAF_Base64_CreateBase64Obj(&handle)) != SAR_OK) {
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SAFerr(SAF_F_SAF_BASE64_DECODE, ERR_R_GMAPI_LIB);
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goto end;
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}
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p = pucOutData;
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len = *puiOutDataLen;
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if ((ret = SAF_Base64_DecodeUpdate(handle, pucInData, puiInDataLen,
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p, &len)) != SAR_OK) {
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SAFerr(SAF_F_SAF_BASE64_DECODE, ERR_R_GMAPI_LIB);
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goto end;
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}
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p += len;
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len = *puiOutDataLen - len;
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if ((ret = SAF_Base64_DecodeFinal(handle, p, &len)) != SAR_OK) {
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SAFerr(SAF_F_SAF_BASE64_DECODE, ERR_R_GMAPI_LIB);
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goto end;
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}
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p += len;
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*puiOutDataLen = p - pucOutData;
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ret = SAR_OK;
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end:
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SAF_Base64_DestroyBase64Obj(handle);
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return ret;
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}
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