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Move sm2 ctx functions to a standalone source file

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To support UADK implementations
This commit is contained in:
Zhi Guan
2024-01-06 20:27:52 +08:00
parent b0c5208a68
commit 2dab02f76a
3 changed files with 138 additions and 115 deletions
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1
CMakeLists.txt
View File

@@ -21,6 +21,7 @@ set(src
src/sm2_alg.c
src/sm2_key.c
src/sm2_lib.c
src/sm2_ctx.c
src/sm9_alg.c
src/sm9_key.c
src/sm9_lib.c

137
src/sm2_ctx.c Normal file
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@@ -0,0 +1,137 @@
/*
* Copyright 2014-2024 The GmSSL Project. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <gmssl/mem.h>
#include <gmssl/sm2.h>
#include <gmssl/sm3.h>
#include <gmssl/asn1.h>
#include <gmssl/error.h>
#include <gmssl/endian.h>
int sm2_sign_init(SM2_SIGN_CTX *ctx, const SM2_KEY *key, const char *id, size_t idlen)
{
if (!ctx || !key) {
error_print();
return -1;
}
ctx->key = *key;
sm3_init(&ctx->sm3_ctx);
if (id) {
uint8_t z[SM3_DIGEST_SIZE];
if (idlen <= 0 || idlen > SM2_MAX_ID_LENGTH) {
error_print();
return -1;
}
sm2_compute_z(z, &key->public_key, id, idlen);
sm3_update(&ctx->sm3_ctx, z, sizeof(z));
}
return 1;
}
int sm2_sign_update(SM2_SIGN_CTX *ctx, const uint8_t *data, size_t datalen)
{
if (!ctx) {
error_print();
return -1;
}
if (data && datalen > 0) {
sm3_update(&ctx->sm3_ctx, data, datalen);
}
return 1;
}
int sm2_sign_finish(SM2_SIGN_CTX *ctx, uint8_t *sig, size_t *siglen)
{
uint8_t dgst[SM3_DIGEST_SIZE];
if (!ctx || !sig || !siglen) {
error_print();
return -1;
}
sm3_finish(&ctx->sm3_ctx, dgst);
if (sm2_sign(&ctx->key, dgst, sig, siglen) != 1) {
error_print();
return -1;
}
return 1;
}
int sm2_sign_finish_fixlen(SM2_SIGN_CTX *ctx, size_t siglen, uint8_t *sig)
{
uint8_t dgst[SM3_DIGEST_SIZE];
if (!ctx || !sig || !siglen) {
error_print();
return -1;
}
sm3_finish(&ctx->sm3_ctx, dgst);
if (sm2_sign_fixlen(&ctx->key, dgst, siglen, sig) != 1) {
error_print();
return -1;
}
return 1;
}
int sm2_verify_init(SM2_SIGN_CTX *ctx, const SM2_KEY *key, const char *id, size_t idlen)
{
if (!ctx || !key) {
error_print();
return -1;
}
memset(ctx, 0, sizeof(*ctx));
ctx->key.public_key = key->public_key;
sm3_init(&ctx->sm3_ctx);
if (id) {
uint8_t z[SM3_DIGEST_SIZE];
if (idlen <= 0 || idlen > SM2_MAX_ID_LENGTH) {
error_print();
return -1;
}
sm2_compute_z(z, &key->public_key, id, idlen);
sm3_update(&ctx->sm3_ctx, z, sizeof(z));
}
return 1;
}
int sm2_verify_update(SM2_SIGN_CTX *ctx, const uint8_t *data, size_t datalen)
{
if (!ctx) {
error_print();
return -1;
}
if (data && datalen > 0) {
sm3_update(&ctx->sm3_ctx, data, datalen);
}
return 1;
}
int sm2_verify_finish(SM2_SIGN_CTX *ctx, const uint8_t *sig, size_t siglen)
{
uint8_t dgst[SM3_DIGEST_SIZE];
if (!ctx || !sig) {
error_print();
return -1;
}
sm3_finish(&ctx->sm3_ctx, dgst);
if (sm2_verify(&ctx->key, dgst, sig, siglen) != 1) {
error_print();
return -1;
}
return 1;
}

115
src/sm2_lib.c
View File

@@ -332,121 +332,6 @@ int sm2_compute_z(uint8_t z[32], const SM2_POINT *pub, const char *id, size_t id
return 1;
}
int sm2_sign_init(SM2_SIGN_CTX *ctx, const SM2_KEY *key, const char *id, size_t idlen)
{
if (!ctx || !key) {
error_print();
return -1;
}
ctx->key = *key;
sm3_init(&ctx->sm3_ctx);
if (id) {
uint8_t z[SM3_DIGEST_SIZE];
if (idlen <= 0 || idlen > SM2_MAX_ID_LENGTH) {
error_print();
return -1;
}
sm2_compute_z(z, &key->public_key, id, idlen);
sm3_update(&ctx->sm3_ctx, z, sizeof(z));
}
return 1;
}
int sm2_sign_update(SM2_SIGN_CTX *ctx, const uint8_t *data, size_t datalen)
{
if (!ctx) {
error_print();
return -1;
}
if (data && datalen > 0) {
sm3_update(&ctx->sm3_ctx, data, datalen);
}
return 1;
}
int sm2_sign_finish(SM2_SIGN_CTX *ctx, uint8_t *sig, size_t *siglen)
{
uint8_t dgst[SM3_DIGEST_SIZE];
if (!ctx || !sig || !siglen) {
error_print();
return -1;
}
sm3_finish(&ctx->sm3_ctx, dgst);
if (sm2_sign(&ctx->key, dgst, sig, siglen) != 1) {
error_print();
return -1;
}
return 1;
}
int sm2_sign_finish_fixlen(SM2_SIGN_CTX *ctx, size_t siglen, uint8_t *sig)
{
uint8_t dgst[SM3_DIGEST_SIZE];
if (!ctx || !sig || !siglen) {
error_print();
return -1;
}
sm3_finish(&ctx->sm3_ctx, dgst);
if (sm2_sign_fixlen(&ctx->key, dgst, siglen, sig) != 1) {
error_print();
return -1;
}
return 1;
}
int sm2_verify_init(SM2_SIGN_CTX *ctx, const SM2_KEY *key, const char *id, size_t idlen)
{
if (!ctx || !key) {
error_print();
return -1;
}
memset(ctx, 0, sizeof(*ctx));
ctx->key.public_key = key->public_key;
sm3_init(&ctx->sm3_ctx);
if (id) {
uint8_t z[SM3_DIGEST_SIZE];
if (idlen <= 0 || idlen > SM2_MAX_ID_LENGTH) {
error_print();
return -1;
}
sm2_compute_z(z, &key->public_key, id, idlen);
sm3_update(&ctx->sm3_ctx, z, sizeof(z));
}
return 1;
}
int sm2_verify_update(SM2_SIGN_CTX *ctx, const uint8_t *data, size_t datalen)
{
if (!ctx) {
error_print();
return -1;
}
if (data && datalen > 0) {
sm3_update(&ctx->sm3_ctx, data, datalen);
}
return 1;
}
int sm2_verify_finish(SM2_SIGN_CTX *ctx, const uint8_t *sig, size_t siglen)
{
uint8_t dgst[SM3_DIGEST_SIZE];
if (!ctx || !sig) {
error_print();
return -1;
}
sm3_finish(&ctx->sm3_ctx, dgst);
if (sm2_verify(&ctx->key, dgst, sig, siglen) != 1) {
error_print();
return -1;
}
return 1;
}
int sm2_kdf(const uint8_t *in, size_t inlen, size_t outlen, uint8_t *out)
{
SM3_CTX ctx;