1/*
2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <openssl/aes.h>
11#include <openssl/modes.h>
12
13/*
14 * The input and output encrypted as though 128bit cfb mode is being used.
15 * The extra state information to record how much of the 128bit block we have
16 * used is contained in *num;
17 */
18
19void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
20 size_t length, const AES_KEY *key,
21 unsigned char *ivec, int *num, const int enc)
22{
23
24 CRYPTO_cfb128_encrypt(in, out, length, key, ivec, num, enc,
25 (block128_f) AES_encrypt);
26}
27
28/* N.B. This expects the input to be packed, MS bit first */
29void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
30 size_t length, const AES_KEY *key,
31 unsigned char *ivec, int *num, const int enc)
32{
33 CRYPTO_cfb128_1_encrypt(in, out, length, key, ivec, num, enc,
34 (block128_f) AES_encrypt);
35}
36
37void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
38 size_t length, const AES_KEY *key,
39 unsigned char *ivec, int *num, const int enc)
40{
41 CRYPTO_cfb128_8_encrypt(in, out, length, key, ivec, num, enc,
42 (block128_f) AES_encrypt);
43}
44