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libcli:auth: Use GnuTLS AES128 CFB for netlogon_creds_aes_encrypt()

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Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Andreas Schneider 2019-03-01 17:41:11 +01:00 committed by Andreas Schneider
parent cd97c47873
commit 054efd118d
1 changed files with 36 additions and 0 deletions
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36
libcli/auth/credentials.c
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@ -295,12 +295,48 @@ NTSTATUS netlogon_creds_arcfour_crypt(struct netlogon_creds_CredentialState *cre
*/
void netlogon_creds_aes_encrypt(struct netlogon_creds_CredentialState *creds, uint8_t *data, size_t len)
{
#ifdef HAVE_GNUTLS_AES_CFB8
gnutls_cipher_hd_t cipher_hnd = NULL;
gnutls_datum_t key = {
.data = creds->session_key,
.size = sizeof(creds->session_key),
};
uint32_t iv_size =
gnutls_cipher_get_iv_size(GNUTLS_CIPHER_AES_128_CFB8);
uint8_t _iv[iv_size];
gnutls_datum_t iv = {
.data = _iv,
.size = iv_size,
};
int rc;
ZERO_ARRAY(_iv);
rc = gnutls_cipher_init(&cipher_hnd,
GNUTLS_CIPHER_AES_128_CFB8,
&key,
&iv);
if (rc < 0) {
DBG_ERR("ERROR: gnutls_cipher_init: %s\n",
gnutls_strerror(rc));
return;
}
rc = gnutls_cipher_encrypt(cipher_hnd, data, len);
gnutls_cipher_deinit(cipher_hnd);
if (rc < 0) {
DBG_ERR("ERROR: gnutls_cipher_encrypt: %s\n",
gnutls_strerror(rc));
return;
}
#else /* NOT HAVE_GNUTLS_AES_CFB8 */
AES_KEY key;
uint8_t iv[AES_BLOCK_SIZE] = {0};
AES_set_encrypt_key(creds->session_key, 128, &key);
aes_cfb8_encrypt(data, data, len, &key, iv, AES_ENCRYPT);
#endif /* HAVE_GNUTLS_AES_CFB8 */
}
/*