HardenedBSD/sys/crypto/armv8/armv8_crypto.h
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90 lines
3.6 KiB
C

/*-
* Copyright (c) 2016 The FreeBSD Foundation
*
* This software was developed by Andrew Turner under
* sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _ARMV8_CRYPTO_H_
#define _ARMV8_CRYPTO_H_
#define AES256_ROUNDS 14
#define AES_SCHED_LEN ((AES256_ROUNDS + 1) * AES_BLOCK_LEN)
typedef struct {
uint32_t aes_key[AES_SCHED_LEN/4];
int aes_rounds;
} AES_key_t;
typedef union {
uint64_t u[2];
uint32_t d[4];
uint8_t c[16];
size_t t[16 / sizeof(size_t)];
} __uint128_val_t;
struct armv8_crypto_session {
AES_key_t enc_schedule;
AES_key_t dec_schedule;
AES_key_t xts_schedule;
__uint128_val_t Htable[16];
};
/* Prototypes for aesv8-armx.S */
void aes_v8_encrypt(uint8_t *in, uint8_t *out, const AES_key_t *key);
int aes_v8_set_encrypt_key(const unsigned char *userKey, const int bits, const AES_key_t *key);
int aes_v8_set_decrypt_key(const unsigned char *userKey, const int bits, const AES_key_t *key);
/* Prototypes for ghashv8-armx.S */
void gcm_init_v8(__uint128_val_t Htable[16], const uint64_t Xi[2]);
void gcm_gmult_v8(uint64_t Xi[2], const __uint128_val_t Htable[16]);
void gcm_ghash_v8(uint64_t Xi[2], const __uint128_val_t Htable[16], const uint8_t *inp, size_t len);
void armv8_aes_encrypt_cbc(const AES_key_t *key, size_t len,
struct crypto_buffer_cursor *fromc, struct crypto_buffer_cursor *toc,
const uint8_t iv[static AES_BLOCK_LEN]);
void armv8_aes_decrypt_cbc(const AES_key_t *, size_t,
struct crypto_buffer_cursor *fromc, struct crypto_buffer_cursor *toc,
const uint8_t[static AES_BLOCK_LEN]);
void armv8_aes_encrypt_gcm(AES_key_t *, size_t,
struct crypto_buffer_cursor *, struct crypto_buffer_cursor *,
size_t, const uint8_t *,
uint8_t tag[static GMAC_DIGEST_LEN],
const uint8_t[static AES_GCM_IV_LEN],
const __uint128_val_t *);
int armv8_aes_decrypt_gcm(AES_key_t *, size_t,
struct crypto_buffer_cursor *, struct crypto_buffer_cursor *,
size_t, const uint8_t *, const uint8_t tag[static GMAC_DIGEST_LEN],
const uint8_t[static AES_GCM_IV_LEN],
const __uint128_val_t *);
void armv8_aes_encrypt_xts(AES_key_t *, const void *, size_t,
struct crypto_buffer_cursor *, struct crypto_buffer_cursor *,
const uint8_t[AES_BLOCK_LEN]);
void armv8_aes_decrypt_xts(AES_key_t *, const void *, size_t,
struct crypto_buffer_cursor *, struct crypto_buffer_cursor *,
const uint8_t[AES_BLOCK_LEN]);
#endif /* _ARMV8_CRYPTO_H_ */