sys/crypto/aesni/aesni.h

   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
  27 #ifndef _AESNI_H_
  28 #define _AESNI_H_
  29
  30 #include <sys/types.h>
  31 #include <sys/malloc.h>
  32 #include <sys/queue.h>
  33
  34 #include <opencrypto/cryptodev.h>
  35
  36 #if defined(__amd64__) || defined(__i386__)
  37 #include <machine/cpufunc.h>
  38 #include <machine/cputypes.h>
  39 #include <machine/md_var.h>
  40 #include <machine/specialreg.h>
  41 #include <machine/fpu.h>
  42 #endif
  43
  44 #define AES128_ROUNDS   10
  45 #define AES192_ROUNDS   12
  46 #define AES256_ROUNDS   14
  47 #define AES_SCHED_LEN   ((AES256_ROUNDS + 1) * AES_BLOCK_LEN)
  48 #define AES_SCHED_ALIGN 16
  49
  50 struct aesni_session {
  51         uint8_t schedules[3 * AES_SCHED_LEN + AES_SCHED_ALIGN];
  52         uint8_t *enc_schedule;
  53         uint8_t *dec_schedule;
  54         uint8_t *xts_schedule;
  55         int rounds;
  56         /* uint8_t *ses_ictx; */
  57         /* uint8_t *ses_octx; */
  58         int used;
  59         int mlen;
  60         int hash_len;
  61         void (*hash_init)(void *);
  62         int (*hash_update)(void *, const void *, u_int);
  63         void (*hash_finalize)(void *, void *);
  64         bool hmac;
  65 };
  66
  67 /*
  68  * Internal functions, implemented in assembler.
  69  */
  70 void aesni_set_enckey(const uint8_t *userkey,
  71     uint8_t *encrypt_schedule /*__aligned(16)*/, int number_of_rounds);
  72 void aesni_set_deckey(const uint8_t *encrypt_schedule /*__aligned(16)*/,
  73     uint8_t *decrypt_schedule /*__aligned(16)*/, int number_of_rounds);
  74
  75 /*
  76  * Slightly more public interfaces.
  77  */
  78 void aesni_encrypt_cbc(int rounds, const void *key_schedule /*__aligned(16)*/,
  79     size_t len, const uint8_t *from, uint8_t *to,
  80     const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
  81 void aesni_decrypt_cbc(int rounds, const void *key_schedule /*__aligned(16)*/,
  82     size_t len, uint8_t *buf, const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
  83 void aesni_encrypt_ecb(int rounds, const void *key_schedule /*__aligned(16)*/,
  84     size_t len, const uint8_t *from, uint8_t *to);
  85 void aesni_decrypt_ecb(int rounds, const void *key_schedule /*__aligned(16)*/,
  86     size_t len, const uint8_t *from, uint8_t *to);
  87 void aesni_encrypt_icm(int rounds, const void *key_schedule /*__aligned(16)*/,
  88     size_t len, const uint8_t *from, uint8_t *to,
  89     const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
  90
  91 void aesni_encrypt_xts(int rounds, const void *data_schedule /*__aligned(16)*/,
  92     const void *tweak_schedule /*__aligned(16)*/, size_t len,
  93     const uint8_t *from, uint8_t *to,
  94     const uint8_t iv[__min_size(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,
  98     const uint8_t iv[__min_size(AES_BLOCK_LEN)]);
  99
 100 /* GCM & GHASH functions */
 101 void AES_GCM_encrypt(const unsigned char *in, unsigned char *out,
 102     const unsigned char *addt, const unsigned char *ivec,
 103     unsigned char *tag, uint32_t nbytes, uint32_t abytes, int ibytes,
 104     const unsigned char *key, int nr);
 105 int AES_GCM_decrypt(const unsigned char *in, unsigned char *out,
 106     const unsigned char *addt, const unsigned char *ivec,
 107     const unsigned char *tag, uint32_t nbytes, uint32_t abytes, int ibytes,
 108     const unsigned char *key, int nr);
 109
 110 /* CCM + CBC-MAC functions */
 111 void AES_CCM_encrypt(const unsigned char *in, unsigned char *out,
 112     const unsigned char *addt, const unsigned char *ivec,
 113     unsigned char *tag, uint32_t nbytes, uint32_t abytes, int nlen,
 114     int tag_length, const unsigned char *key, int nr);
 115 int AES_CCM_decrypt(const unsigned char *in, unsigned char *out,
 116     const unsigned char *addt, const unsigned char *ivec,
 117     const unsigned char *tag, uint32_t nbytes, uint32_t abytes, int nlen,
 118     int tag_length, const unsigned char *key, int nr);
 119 void aesni_cipher_setup_common(struct aesni_session *ses,
 120     const struct crypto_session_params *csp, const uint8_t *key, int keylen);
 121
 122 #endif /* _AESNI_H_ */