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Add sm4_MODE_encrypt_blocks

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This commit is contained in:
Zhi Guan
2024-04-29 22:35:25 +08:00
parent 33c546f48a
commit 5cf6f2609e
10 changed files with 618 additions and 121 deletions
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29
src/sm4_ecb.c
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@@ -13,17 +13,12 @@
#include <gmssl/error.h>
void sm4_ecb_encrypt_blocks(const SM4_KEY *key, const uint8_t *in, size_t nblocks, uint8_t *out)
{
while (nblocks--) {
sm4_encrypt(key, in, out);
in += SM4_BLOCK_SIZE;
out += SM4_BLOCK_SIZE;
}
}
int sm4_ecb_encrypt_init(SM4_ECB_CTX *ctx, const uint8_t key[SM4_BLOCK_SIZE])
{
if (!ctx || !key) {
error_print();
return -1;
}
sm4_set_encrypt_key(&ctx->sm4_key, key);
memset(ctx->block, 0, SM4_BLOCK_SIZE);
ctx->block_nbytes = 0;
@@ -37,6 +32,10 @@ int sm4_ecb_encrypt_update(SM4_ECB_CTX *ctx,
size_t nblocks;
size_t len;
if (!ctx || !in || !out || !outlen) {
error_print();
return -1;
}
if (ctx->block_nbytes >= SM4_BLOCK_SIZE) {
error_print();
return -1;
@@ -50,7 +49,7 @@ int sm4_ecb_encrypt_update(SM4_ECB_CTX *ctx,
return 1;
}
memcpy(ctx->block + ctx->block_nbytes, in, left);
sm4_ecb_encrypt_blocks(&ctx->sm4_key, ctx->block, 1, out);
sm4_encrypt_blocks(&ctx->sm4_key, ctx->block, 1, out);
in += left;
inlen -= left;
out += SM4_BLOCK_SIZE;
@@ -59,7 +58,7 @@ int sm4_ecb_encrypt_update(SM4_ECB_CTX *ctx,
if (inlen >= SM4_BLOCK_SIZE) {
nblocks = inlen / SM4_BLOCK_SIZE;
len = nblocks * SM4_BLOCK_SIZE;
sm4_ecb_encrypt_blocks(&ctx->sm4_key, in, nblocks, out);
sm4_encrypt_blocks(&ctx->sm4_key, in, nblocks, out);
in += len;
inlen -= len;
out += len;
@@ -74,6 +73,10 @@ int sm4_ecb_encrypt_update(SM4_ECB_CTX *ctx,
int sm4_ecb_encrypt_finish(SM4_ECB_CTX *ctx, uint8_t *out, size_t *outlen)
{
if (!ctx || !outlen) {
error_print();
return -1;
}
if (ctx->block_nbytes >= SM4_BLOCK_SIZE) {
error_print();
return -1;
@@ -88,6 +91,10 @@ int sm4_ecb_encrypt_finish(SM4_ECB_CTX *ctx, uint8_t *out, size_t *outlen)
int sm4_ecb_decrypt_init(SM4_ECB_CTX *ctx, const uint8_t key[SM4_BLOCK_SIZE])
{
if (!ctx || !key) {
error_print();
return -1;
}
sm4_set_decrypt_key(&ctx->sm4_key, key);
memset(ctx->block, 0, SM4_BLOCK_SIZE);
ctx->block_nbytes = 0;