mirrors/pico-hsm
1
0
Fork 0
mirror of https://github.com/polhenarejos/pico-hsm.git synced 2026-05-03 21:36:25 +00:00
Code Issues Projects Releases Packages Wiki Activity

Replacing CFB to CBC AES proc

Browse source 
Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos 2022-03-29 09:34:44 +02:00
parent 047a443536
commit 427260663f
No known key found for this signature in database
GPG key ID: C0095B7870A4CCD3
1 changed files with 3 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
src/hsm/hash_utils.c
View file

@ -78,26 +78,24 @@ int aes_encrypt(const uint8_t *key, const uint8_t *iv, int key_size, uint8_t *da
mbedtls_aes_context aes;
mbedtls_aes_init(&aes);
uint8_t tmp_iv[IV_SIZE];
size_t iv_offset = 0;
memset(tmp_iv, 0, IV_SIZE);
if (iv)
memcpy(tmp_iv, iv, IV_SIZE);
int r = mbedtls_aes_setkey_enc(&aes, key, key_size);
if (r != 0)
return HSM_EXEC_ERROR;
return mbedtls_aes_crypt_cfb128(&aes, MBEDTLS_AES_ENCRYPT, len, &iv_offset, tmp_iv, data, data);
return mbedtls_aes_crypt_cbc(&aes, MBEDTLS_AES_ENCRYPT, len, tmp_iv, data, data);
}
int aes_decrypt(const uint8_t *key, const uint8_t *iv, int key_size, uint8_t *data, int len) {
mbedtls_aes_context aes;
mbedtls_aes_init(&aes);
uint8_t tmp_iv[IV_SIZE];
size_t iv_offset = 0;
memset(tmp_iv, 0, IV_SIZE);
if (iv)
memcpy(tmp_iv, iv, IV_SIZE);
int r = mbedtls_aes_setkey_enc(&aes, key, key_size);
int r = mbedtls_aes_setkey_dec(&aes, key, key_size);
if (r != 0)
return HSM_EXEC_ERROR;
return mbedtls_aes_crypt_cfb128(&aes, MBEDTLS_AES_DECRYPT, len, &iv_offset, tmp_iv, data, data);
return mbedtls_aes_crypt_cbc(&aes, MBEDTLS_AES_DECRYPT, len, tmp_iv, data, data);
}