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__)
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);
60 /* uint8_t *ses_ictx; */
61 /* uint8_t *ses_octx; */
65 void (*hash_init)(void *);
66 void (*hash_update)(void *, const void *, unsigned);
67 void (*hash_finalize)(void *, void *);
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[__min_size(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[__min_size(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);
91 void aesni_encrypt_icm(int rounds, const void *key_schedule /*__aligned(16)*/,
92 size_t len, const uint8_t *from, uint8_t *to,
93 const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
95 void aesni_encrypt_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,
98 const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
99 void aesni_decrypt_xts(int rounds, const void *data_schedule /*__aligned(16)*/,
100 const void *tweak_schedule /*__aligned(16)*/, size_t len,
101 const uint8_t *from, uint8_t *to,
102 const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
104 /* GCM & GHASH functions */
105 void AES_GCM_encrypt(const unsigned char *in, unsigned char *out,
106 const unsigned char *addt, const unsigned char *ivec,
107 unsigned char *tag, uint32_t nbytes, uint32_t abytes, int ibytes,
108 const unsigned char *key, int nr);
109 int AES_GCM_decrypt(const unsigned char *in, unsigned char *out,
110 const unsigned char *addt, const unsigned char *ivec,
111 const unsigned char *tag, uint32_t nbytes, uint32_t abytes, int ibytes,
112 const unsigned char *key, int nr);
114 /* CCM + CBC-MAC functions */
115 void AES_CCM_encrypt(const unsigned char *in, unsigned char *out,
116 const unsigned char *addt, const unsigned char *ivec,
117 unsigned char *tag, uint32_t nbytes, uint32_t abytes, int ibytes,
118 const unsigned char *key, int nr);
119 int AES_CCM_decrypt(const unsigned char *in, unsigned char *out,
120 const unsigned char *addt, const unsigned char *ivec,
121 const unsigned char *tag, uint32_t nbytes, uint32_t abytes, int ibytes,
122 const unsigned char *key, int nr);
123 void aesni_cipher_setup_common(struct aesni_session *ses,
124 const struct crypto_session_params *csp, const uint8_t *key, int keylen);
126 #endif /* _AESNI_H_ */