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__) 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__) 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