16ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org/* 26ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * aes.h 36ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * 46ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * header file for the AES block cipher 56ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * 66ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * David A. McGrew 76ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * Cisco Systems, Inc. 86ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org */ 96ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 106ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org/* 116ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * 126ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * Copyright (c) 2001-2006, Cisco Systems, Inc. 136ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * All rights reserved. 146ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * 156ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * Redistribution and use in source and binary forms, with or without 166ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * modification, are permitted provided that the following conditions 176ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * are met: 186ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * 196ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * Redistributions of source code must retain the above copyright 206ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * notice, this list of conditions and the following disclaimer. 216ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * 226ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * Redistributions in binary form must reproduce the above 236ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * copyright notice, this list of conditions and the following 246ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * disclaimer in the documentation and/or other materials provided 256ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * with the distribution. 266ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * 276ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * Neither the name of the Cisco Systems, Inc. nor the names of its 286ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * contributors may be used to endorse or promote products derived 296ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * from this software without specific prior written permission. 306ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * 316ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 326ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 336ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 346ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 356ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 366ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 376ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 386ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 396ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 406ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 416ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 426ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * OF THE POSSIBILITY OF SUCH DAMAGE. 436ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * 446ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org */ 456ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 466ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org#ifndef _AES_H 476ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org#define _AES_H 486ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 496ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org#include "config.h" 506ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 516ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org#include "datatypes.h" 526ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org#include "gf2_8.h" 536ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org#include "err.h" 546ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 556ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org/* aes internals */ 566ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 576ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgtypedef struct { 586ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org v128_t round[15]; 596ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org int num_rounds; 606ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org} aes_expanded_key_t; 616ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 626ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgerr_status_t 636ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgaes_expand_encryption_key(const uint8_t *key, 646ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org int key_len, 656ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org aes_expanded_key_t *expanded_key); 666ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 676ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgerr_status_t 686ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgaes_expand_decryption_key(const uint8_t *key, 696ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org int key_len, 706ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org aes_expanded_key_t *expanded_key); 716ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 726ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgvoid 736ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgaes_encrypt(v128_t *plaintext, const aes_expanded_key_t *exp_key); 746ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 756ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgvoid 766ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgaes_decrypt(v128_t *plaintext, const aes_expanded_key_t *exp_key); 776ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 786ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org#if 0 796ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org/* 806ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org * internal functions 816ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org */ 826ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 836ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgvoid 846ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgaes_init_sbox(void); 856ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 866ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgvoid 876ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.orgaes_compute_tables(void); 886ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org#endif 896ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org 906ed0ee98e1c3d29a0ef79996f7d1abf174f39besergeyu@chromium.org#endif /* _AES_H */ 91