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) |
33 | extern "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 | #if defined(__ARM_NEON__) && !defined(__arm64__) // for expanded keys in bit slice format |
45 | #define AES_CBC_CTX_MAX_SIZE (ccn_sizeof_size(sizeof(void *)) + ccn_sizeof_size(AES_BLOCK_SIZE) + ccn_sizeof_size(64*4) + (14-1)*128+32 ) |
46 | #else |
47 | #define AES_CBC_CTX_MAX_SIZE (ccn_sizeof_size(sizeof(void *)) + ccn_sizeof_size(AES_BLOCK_SIZE) + ccn_sizeof_size(64*4)) |
48 | #endif |
49 | |
50 | typedef struct{ |
51 | cccbc_ctx_decl(AES_CBC_CTX_MAX_SIZE, ctx); |
52 | } aes_decrypt_ctx; |
53 | |
54 | typedef struct{ |
55 | cccbc_ctx_decl(AES_CBC_CTX_MAX_SIZE, ctx); |
56 | } aes_encrypt_ctx; |
57 | |
58 | typedef struct |
59 | { |
60 | aes_decrypt_ctx decrypt; |
61 | aes_encrypt_ctx encrypt; |
62 | } aes_ctx; |
63 | |
64 | |
65 | /* for compatibility with old apis*/ |
66 | #define aes_ret int |
67 | #define aes_good 0 |
68 | #define aes_error -1 |
69 | #define aes_rval aes_ret |
70 | |
71 | |
72 | |
73 | /* Key lengths in the range 16 <= key_len <= 32 are given in bytes, */ |
74 | /* those in the range 128 <= key_len <= 256 are given in bits */ |
75 | |
76 | aes_rval aes_encrypt_key(const unsigned char *key, int key_len, aes_encrypt_ctx cx[1]); |
77 | aes_rval aes_encrypt_key128(const unsigned char *key, aes_encrypt_ctx cx[1]); |
78 | aes_rval aes_encrypt_key256(const unsigned char *key, aes_encrypt_ctx cx[1]); |
79 | |
80 | #if defined (__i386__) || defined (__x86_64__) || defined (__arm64__) |
81 | aes_rval aes_encrypt(const unsigned char *in, unsigned char *out, aes_encrypt_ctx cx[1]); |
82 | #endif |
83 | |
84 | aes_rval aes_encrypt_cbc(const unsigned char *in_blk, const unsigned char *in_iv, unsigned int num_blk, |
85 | unsigned char *out_blk, aes_encrypt_ctx cx[1]); |
86 | |
87 | |
88 | aes_rval aes_decrypt_key(const unsigned char *key, int key_len, aes_decrypt_ctx cx[1]); |
89 | aes_rval aes_decrypt_key128(const unsigned char *key, aes_decrypt_ctx cx[1]); |
90 | aes_rval aes_decrypt_key256(const unsigned char *key, aes_decrypt_ctx cx[1]); |
91 | |
92 | #if defined (__i386__) || defined (__x86_64__) || defined (__arm64__) |
93 | aes_rval aes_decrypt(const unsigned char *in, unsigned char *out, aes_decrypt_ctx cx[1]); |
94 | #endif |
95 | |
96 | aes_rval aes_decrypt_cbc(const unsigned char *in_blk, const unsigned char *in_iv, unsigned int num_blk, |
97 | unsigned char *out_blk, aes_decrypt_ctx cx[1]); |
98 | |
99 | aes_rval aes_encrypt_key_gcm(const unsigned char *key, int key_len, ccgcm_ctx *ctx); |
100 | aes_rval aes_encrypt_key_with_iv_gcm(const unsigned char *key, int key_len, const unsigned char *in_iv, ccgcm_ctx *ctx); |
101 | aes_rval aes_encrypt_set_iv_gcm(const unsigned char *in_iv, unsigned int len, ccgcm_ctx *ctx); |
102 | aes_rval aes_encrypt_reset_gcm(ccgcm_ctx *ctx); |
103 | aes_rval aes_encrypt_inc_iv_gcm(unsigned char *out_iv, ccgcm_ctx *ctx); |
104 | aes_rval aes_encrypt_aad_gcm(const unsigned char *aad, unsigned int aad_bytes, ccgcm_ctx *ctx); |
105 | aes_rval aes_encrypt_gcm(const unsigned char *in_blk, unsigned int num_bytes, unsigned char *out_blk, ccgcm_ctx *ctx); |
106 | aes_rval aes_encrypt_finalize_gcm(unsigned char *tag, unsigned int tag_bytes, ccgcm_ctx *ctx); |
107 | unsigned aes_encrypt_get_ctx_size_gcm(void); |
108 | |
109 | aes_rval aes_decrypt_key_gcm(const unsigned char *key, int key_len, ccgcm_ctx *ctx); |
110 | aes_rval aes_decrypt_key_with_iv_gcm(const unsigned char *key, int key_len, const unsigned char *in_iv, ccgcm_ctx *ctx); |
111 | aes_rval aes_decrypt_set_iv_gcm(const unsigned char *in_iv, unsigned int len, ccgcm_ctx *ctx); |
112 | aes_rval aes_decrypt_reset_gcm(ccgcm_ctx *ctx); |
113 | aes_rval aes_decrypt_inc_iv_gcm(unsigned char *out_iv, ccgcm_ctx *ctx); |
114 | aes_rval aes_decrypt_aad_gcm(const unsigned char *aad, unsigned int aad_bytes, ccgcm_ctx *ctx); |
115 | aes_rval aes_decrypt_gcm(const unsigned char *in_blk, unsigned int num_bytes, unsigned char *out_blk, ccgcm_ctx *ctx); |
116 | aes_rval aes_decrypt_finalize_gcm(unsigned char *tag, unsigned int tag_bytes, ccgcm_ctx *ctx); |
117 | unsigned aes_decrypt_get_ctx_size_gcm(void); |
118 | |
119 | #if defined(__cplusplus) |
120 | } |
121 | #endif |
122 | |
123 | #endif |
124 | |