abc/GmSSL
1
0
Fork 0
mirror of https://github.com/guanzhi/GmSSL.git synced 2026-06-20 03:44:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

Clean cipher local vars

Browse Source
This commit is contained in:
Zhi Guan
2026-06-13 22:57:20 +08:00
parent c12edeb7b1
commit a73c303339
4 changed files with 33 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/aes_modes.c
View File

@@ -153,6 +153,7 @@ static void aes_ctr32_encrypt(const AES_KEY *key, uint8_t ctr[16], const uint8_t
out += len;
inlen -= len;
}
gmssl_secure_clear(block, sizeof(block));
}
int aes_gcm_encrypt(const AES_KEY *key, const uint8_t *iv, size_t ivlen,
@@ -188,6 +189,10 @@ int aes_gcm_encrypt(const AES_KEY *key, const uint8_t *iv, size_t ivlen,
ghash(H, aad, aadlen, out, inlen, H);
gmssl_memxor(tag, T, H, taglen);
gmssl_secure_clear(H, sizeof(H));
gmssl_secure_clear(Y, sizeof(Y));
gmssl_secure_clear(T, sizeof(T));
return 1;
}
@@ -202,6 +207,11 @@ int aes_gcm_decrypt(const AES_KEY *key, const uint8_t *iv, size_t ivlen,
uint8_t Y[16];
uint8_t T[16];
if (taglen > AES_GCM_MAX_TAG_SIZE) {
error_print();
return -1;
}
aes_encrypt(key, H, H);
if (ivlen == 12) {
@@ -216,6 +226,9 @@ int aes_gcm_decrypt(const AES_KEY *key, const uint8_t *iv, size_t ivlen,
aes_encrypt(key, Y, T);
gmssl_memxor(T, T, H, taglen);
if (gmssl_secure_memcmp(T, tag, taglen) != 0) {
gmssl_secure_clear(H, sizeof(H));
gmssl_secure_clear(Y, sizeof(Y));
gmssl_secure_clear(T, sizeof(T));
error_print();
return -1;
}
@@ -223,5 +236,8 @@ int aes_gcm_decrypt(const AES_KEY *key, const uint8_t *iv, size_t ivlen,
ctr32_incr(Y);
aes_ctr32_encrypt(key, Y, in, inlen, out);
gmssl_secure_clear(H, sizeof(H));
gmssl_secure_clear(Y, sizeof(Y));
gmssl_secure_clear(T, sizeof(T));
return 1;
}