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