2 * Copyright (c) 2010 Konstantin Belousov <kib@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
32 #include <sys/types.h>
33 #include <sys/malloc.h>
34 #include <sys/queue.h>
36 #include <opencrypto/cryptodev.h>
38 #if defined(__amd64__) || (defined(__i386__) && !defined(PC98))
39 #include <machine/cpufunc.h>
40 #include <machine/cputypes.h>
41 #include <machine/md_var.h>
42 #include <machine/specialreg.h>
45 #include <machine/npx.h>
46 #elif defined(__amd64__)
47 #include <machine/fpu.h>
50 #define AES128_ROUNDS 10
51 #define AES192_ROUNDS 12
52 #define AES256_ROUNDS 14
53 #define AES_SCHED_LEN ((AES256_ROUNDS + 1) * AES_BLOCK_LEN)
55 struct aesni_session {
56 uint8_t enc_schedule[AES_SCHED_LEN] __aligned(16);
57 uint8_t dec_schedule[AES_SCHED_LEN] __aligned(16);
58 uint8_t xts_schedule[AES_SCHED_LEN] __aligned(16);
59 uint8_t iv[AES_BLOCK_LEN];
62 /* uint8_t *ses_ictx; */
63 /* uint8_t *ses_octx; */
67 TAILQ_ENTRY(aesni_session) next;
68 struct fpu_kern_ctx *fpu_ctx;
72 * Internal functions, implemented in assembler.
74 void aesni_set_enckey(const uint8_t *userkey,
75 uint8_t *encrypt_schedule /*__aligned(16)*/, int number_of_rounds);
76 void aesni_set_deckey(const uint8_t *encrypt_schedule /*__aligned(16)*/,
77 uint8_t *decrypt_schedule /*__aligned(16)*/, int number_of_rounds);
80 * Slightly more public interfaces.
82 void aesni_encrypt_cbc(int rounds, const void *key_schedule /*__aligned(16)*/,
83 size_t len, const uint8_t *from, uint8_t *to,
84 const uint8_t iv[AES_BLOCK_LEN]);
85 void aesni_decrypt_cbc(int rounds, const void *key_schedule /*__aligned(16)*/,
86 size_t len, uint8_t *buf, const uint8_t iv[AES_BLOCK_LEN]);
87 void aesni_encrypt_ecb(int rounds, const void *key_schedule /*__aligned(16)*/,
88 size_t len, const uint8_t *from, uint8_t *to);
89 void aesni_decrypt_ecb(int rounds, const void *key_schedule /*__aligned(16)*/,
90 size_t len, const uint8_t *from, uint8_t *to);
92 void aesni_encrypt_xts(int rounds, const void *data_schedule /*__aligned(16)*/,
93 const void *tweak_schedule /*__aligned(16)*/, size_t len,
94 const uint8_t *from, uint8_t *to, const uint8_t iv[AES_BLOCK_LEN]);
95 void aesni_decrypt_xts(int rounds, const void *data_schedule /*__aligned(16)*/,
96 const void *tweak_schedule /*__aligned(16)*/, size_t len,
97 const uint8_t *from, uint8_t *to, const uint8_t iv[AES_BLOCK_LEN]);
99 int aesni_cipher_setup(struct aesni_session *ses,
100 struct cryptoini *encini);
101 int aesni_cipher_process(struct aesni_session *ses,
102 struct cryptodesc *enccrd, struct cryptop *crp);
104 uint8_t *aesni_cipher_alloc(struct cryptodesc *enccrd, struct cryptop *crp,
107 #endif /* _AESNI_H_ */