1/*
2 * Copyright (c) 2012 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#ifndef _AES_H
30#define _AES_H
31
32#if defined(__cplusplus)
33extern "C"
34{
35#endif
36
37#include <corecrypto/ccmode.h>
38#include <corecrypto/ccn.h>
39
40#define AES_BLOCK_SIZE  16  /* the AES block size in bytes          */
41
42//Unholy HACK: this works because we know the size of the context for every
43//possible corecrypto implementation is less than this.
44#define AES_CBC_CTX_MAX_SIZE (ccn_sizeof_size(sizeof(void *)) + ccn_sizeof_size(AES_BLOCK_SIZE) + ccn_sizeof_size(64*4))
45
46typedef struct{
47	cccbc_ctx_decl(AES_CBC_CTX_MAX_SIZE, ctx);
48} aes_decrypt_ctx;
49
50typedef struct{
51	cccbc_ctx_decl(AES_CBC_CTX_MAX_SIZE, ctx);
52} aes_encrypt_ctx;
53
54typedef struct
55{
56	aes_decrypt_ctx decrypt;
57	aes_encrypt_ctx encrypt;
58} aes_ctx;
59
60
61/* for compatibility with old apis*/
62#define aes_ret     int
63#define aes_good    0
64#define aes_error  -1
65#define aes_rval    aes_ret
66
67
68
69/* Key lengths in the range 16 <= key_len <= 32 are given in bytes, */
70/* those in the range 128 <= key_len <= 256 are given in bits       */
71
72aes_rval aes_encrypt_key(const unsigned char *key, int key_len, aes_encrypt_ctx cx[1]);
73aes_rval aes_encrypt_key128(const unsigned char *key, aes_encrypt_ctx cx[1]);
74aes_rval aes_encrypt_key256(const unsigned char *key, aes_encrypt_ctx cx[1]);
75
76#if defined (__i386__) || defined (__x86_64__) || defined (__arm64__)
77aes_rval aes_encrypt(const unsigned char *in, unsigned char *out, aes_encrypt_ctx cx[1]);
78#endif
79
80aes_rval aes_encrypt_cbc(const unsigned char *in_blk, const unsigned char *in_iv, unsigned int num_blk,
81					 unsigned char *out_blk, aes_encrypt_ctx cx[1]);
82
83
84aes_rval aes_decrypt_key(const unsigned char *key, int key_len, aes_decrypt_ctx cx[1]);
85aes_rval aes_decrypt_key128(const unsigned char *key, aes_decrypt_ctx cx[1]);
86aes_rval aes_decrypt_key256(const unsigned char *key, aes_decrypt_ctx cx[1]);
87
88#if defined (__i386__) || defined (__x86_64__) || defined (__arm64__)
89aes_rval aes_decrypt(const unsigned char *in, unsigned char *out, aes_decrypt_ctx cx[1]);
90#endif
91
92aes_rval aes_decrypt_cbc(const unsigned char *in_blk, const unsigned char *in_iv, unsigned int num_blk,
93					 unsigned char *out_blk, aes_decrypt_ctx cx[1]);
94
95#if defined(__cplusplus)
96}
97#endif
98
99#endif
100