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