void
reg_proto_encrypt_data(BufferObj *plainText, BufferObj *encrKey, BufferObj *authKey,
BufferObj *cipherText, BufferObj *iv)
{
BufferObj *buf = buffobj_new();
uint8 ivBuf[SIZE_128_BITS];
/* 10 rounds for cbc 128 = (10+1) * 4 uint32 */
uint32 rk[44];
uint8 outBuf[1024];
int encrypt_len;
if (!buf)
return;
if (plainText->m_dataLength == 0) {
TUTRACE((TUTRACE_ERR, "Invalid parameters \n"));
buffobj_del(buf);
return;
}
/* Generate a random iv */
RAND_bytes(ivBuf, SIZE_128_BITS);
buffobj_Reset(iv);
buffobj_Append(iv, SIZE_128_BITS, ivBuf);
/* Now encrypt the plaintext and mac using the encryption key and IV. */
buffobj_Append(buf, plainText->m_dataLength, plainText->pBase);
TUTRACE((TUTRACE_ERR, "RPROTO: calling encryption of %d bytes\n", buf->m_dataLength));
rijndaelKeySetupEnc(rk, encrKey->pBase, 128);
encrypt_len = aes_cbc_encrypt_pad(rk, 16, ivBuf, buf->m_dataLength,
plainText->pBase, outBuf, PAD_LEN_PADDING);
buffobj_Append(cipherText, encrypt_len, outBuf);
buffobj_del(buf);
}
int
BCMROMFN(aes_cbc_encrypt)(uint32 *rk,
const size_t key_len,
const uint8 *nonce,
const size_t data_len,
const uint8 *ptxt,
uint8 *ctxt)
{
if (data_len % AES_BLOCK_SZ)
return (-1);
if (data_len < AES_BLOCK_SZ)
return (-1);
return aes_cbc_encrypt_pad(rk, key_len, nonce, data_len, ptxt, ctxt, NO_PADDING);
}
