1 /*- 2 * Copyright (c) 2010 Konstantin Belousov <kib@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/crypto/aesni/aesni.h,v 1.2 2010/09/23 11:57:25 pjd Exp $ 27 */ 28 29 #ifndef _AESNI_H_ 30 #define _AESNI_H_ 31 32 #include <sys/types.h> 33 #include <sys/queue.h> 34 35 #include <opencrypto/cryptodev.h> 36 37 #if defined(__x86_64__) 38 #include <machine/cpufunc.h> 39 #include <machine/cputypes.h> 40 #include <machine/md_var.h> 41 #include <machine/specialreg.h> 42 #endif 43 44 #define AESNI_ALIGN 16 45 46 #define AES128_ROUNDS 10 47 #define AES192_ROUNDS 12 48 #define AES256_ROUNDS 14 49 #define AES_SCHED_LEN ((AES256_ROUNDS + 1) * AES_BLOCK_LEN) 50 51 struct aesni_session { 52 uint8_t enc_schedule[AES_SCHED_LEN] __aligned(16); 53 uint8_t dec_schedule[AES_SCHED_LEN] __aligned(16); 54 uint8_t xts_schedule[AES_SCHED_LEN] __aligned(16); 55 uint8_t iv[AES_BLOCK_LEN]; 56 int algo; 57 int rounds; 58 /* uint8_t *ses_ictx; */ 59 /* uint8_t *ses_octx; */ 60 /* int ses_mlen; */ 61 int used; 62 uint32_t id; 63 TAILQ_ENTRY(aesni_session) next; 64 #if 0 65 struct fpu_kern_ctx fpu_ctx; 66 #endif 67 }; 68 69 /* 70 * Internal functions, implemented in assembler. 71 */ 72 void aesni_enc(int rounds, const uint8_t *key_schedule, 73 const uint8_t from[AES_BLOCK_LEN], uint8_t to[AES_BLOCK_LEN], 74 const uint8_t iv[AES_BLOCK_LEN]); 75 void aesni_dec(int rounds, const uint8_t *key_schedule, 76 const uint8_t from[AES_BLOCK_LEN], uint8_t to[AES_BLOCK_LEN], 77 const uint8_t iv[AES_BLOCK_LEN]); 78 void aesni_set_enckey(const uint8_t *userkey, uint8_t *encrypt_schedule, 79 int number_of_rounds); 80 void aesni_set_deckey(const uint8_t *encrypt_schedule, 81 uint8_t *decrypt_schedule, int number_of_rounds); 82 83 /* 84 * Slightly more public interfaces. 85 */ 86 void aesni_encrypt_cbc(int rounds, const void *key_schedule, size_t len, 87 const uint8_t *from, uint8_t *to, const uint8_t iv[AES_BLOCK_LEN]); 88 void aesni_decrypt_cbc(int rounds, const void *key_schedule, size_t len, 89 const uint8_t *from, const uint8_t iv[AES_BLOCK_LEN]); 90 void aesni_encrypt_ecb(int rounds, const void *key_schedule, size_t len, 91 const uint8_t from[AES_BLOCK_LEN], uint8_t to[AES_BLOCK_LEN]); 92 void aesni_decrypt_ecb(int rounds, const void *key_schedule, size_t len, 93 const uint8_t from[AES_BLOCK_LEN], uint8_t to[AES_BLOCK_LEN]); 94 95 int aesni_cipher_setup(struct aesni_session *ses, 96 struct cryptoini *encini); 97 int aesni_cipher_process(struct aesni_session *ses, 98 struct cryptodesc *enccrd, struct cryptop *crp); 99 100 uint8_t *aesni_cipher_alloc(struct cryptodesc *enccrd, struct cryptop *crp, 101 int *allocated); 102 103 #endif 104