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Return max *outlen in SM4 CTX update/finish

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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
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28
src/sm4_ctr.c
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@@ -70,10 +70,14 @@ int sm4_ctr_encrypt_update(SM4_CTR_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;
@@ -111,10 +115,14 @@ int sm4_ctr_encrypt_update(SM4_CTR_CTX *ctx,
int sm4_ctr_encrypt_finish(SM4_CTR_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;
@@ -146,6 +154,14 @@ int sm4_ctr32_encrypt_update(SM4_CTR_CTX *ctx,
size_t nblocks;
size_t len;
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;
@@ -183,6 +199,14 @@ int sm4_ctr32_encrypt_update(SM4_CTR_CTX *ctx,
int sm4_ctr32_encrypt_finish(SM4_CTR_CTX *ctx, uint8_t *out, size_t *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;