-void gf_mulx(u8 *pad)
-{
- int i, carry;
-
- carry = pad[0] & 0x80;
- for (i = 0; i < AES_BLOCK_SIZE - 1; i++)
- pad[i] = (pad[i] << 1) | (pad[i + 1] >> 7);
- pad[AES_BLOCK_SIZE - 1] <<= 1;
- if (carry)
- pad[AES_BLOCK_SIZE - 1] ^= 0x87;
-}
-
-void aes_cmac_vector(struct crypto_cipher *tfm, size_t num_elem,
- const u8 *addr[], const size_t *len, u8 *mac,
- size_t mac_len)
-{
- u8 cbc[AES_BLOCK_SIZE], pad[AES_BLOCK_SIZE];
- const u8 *pos, *end;
- size_t i, e, left, total_len;
-
- memset(cbc, 0, AES_BLOCK_SIZE);
-
- total_len = 0;
- for (e = 0; e < num_elem; e++)
- total_len += len[e];
- left = total_len;
-
- e = 0;
- pos = addr[0];
- end = pos + len[0];
-
- while (left >= AES_BLOCK_SIZE) {
- for (i = 0; i < AES_BLOCK_SIZE; i++) {
- cbc[i] ^= *pos++;
- if (pos >= end) {
- e++;
- pos = addr[e];
- end = pos + len[e];
- }
- }
- if (left > AES_BLOCK_SIZE)
- crypto_cipher_encrypt_one(tfm, cbc, cbc);
- left -= AES_BLOCK_SIZE;
- }
-
- memset(pad, 0, AES_BLOCK_SIZE);
- crypto_cipher_encrypt_one(tfm, pad, pad);
- gf_mulx(pad);
-
- if (left || total_len == 0) {
- for (i = 0; i < left; i++) {
- cbc[i] ^= *pos++;
- if (pos >= end) {
- e++;
- pos = addr[e];
- end = pos + len[e];
- }
- }
- cbc[left] ^= 0x80;
- gf_mulx(pad);
- }
-
- for (i = 0; i < AES_BLOCK_SIZE; i++)
- pad[i] ^= cbc[i];
- crypto_cipher_encrypt_one(tfm, pad, pad);
- memcpy(mac, pad, mac_len);
-}
-
-
-void ieee80211_aes_cmac(struct crypto_cipher *tfm, const u8 *aad,