abc/GmSSL
1
0
Fork 0
mirror of https://github.com/guanzhi/GmSSL.git synced 2026-05-13 11:56:28 +08:00
Code Issues Packages Projects Releases Wiki Activity

Return max *outlen in SM4 CTX update/finish

Browse Source
This commit is contained in:
Zhi Guan
2024-05-11 15:05:27 +08:00
parent cd5cb85592
commit 2c125fbaa5
6 changed files with 135 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
src/sm4_cbc.c
View File

@@ -89,10 +89,14 @@ int sm4_cbc_encrypt_update(SM4_CBC_CTX *ctx,
size_t nblocks;
size_t len;
if (!ctx || !in || !out || !outlen) {
if (!ctx || !in || !outlen) {
error_print();
return -1;
}
if (!out) {
*outlen = 16 * ((inlen + 15)/16);
return 1;
}
if (ctx->block_nbytes >= SM4_BLOCK_SIZE) {
error_print();
return -1;
@@ -132,10 +136,14 @@ int sm4_cbc_encrypt_update(SM4_CBC_CTX *ctx,
int sm4_cbc_encrypt_finish(SM4_CBC_CTX *ctx, uint8_t *out, size_t *outlen)
{
if (!ctx || !out || !outlen) {
if (!ctx || !outlen) {
error_print();
return -1;
}
if (!out) {
*outlen = SM4_BLOCK_SIZE;
return 1;
}
if (ctx->block_nbytes >= SM4_BLOCK_SIZE) {
error_print();
return -1;
@@ -166,10 +174,14 @@ int sm4_cbc_decrypt_update(SM4_CBC_CTX *ctx,
{
size_t left, len, nblocks;
if (!ctx || !in || !out || !outlen) {
if (!ctx || !in || !outlen) {
error_print();
return -1;
}
if (!out) {
*outlen = 16 * ((inlen + 15)/16);
return 1;
}
if (ctx->block_nbytes > SM4_BLOCK_SIZE) {
error_print();
return -1;
@@ -208,10 +220,14 @@ int sm4_cbc_decrypt_update(SM4_CBC_CTX *ctx,
int sm4_cbc_decrypt_finish(SM4_CBC_CTX *ctx, uint8_t *out, size_t *outlen)
{
if (!ctx || !out || !outlen) {
if (!ctx || !outlen) {
error_print();
return -1;
}
if (!out) {
*outlen = SM4_BLOCK_SIZE;
return 1;
}
if (ctx->block_nbytes != SM4_BLOCK_SIZE) {
error_print();
return -1;