1 /*- 2 * Copyright (c) 2016 The FreeBSD Foundation 3 * 4 * This software was developed by Andrew Turner under 5 * sponsorship from the FreeBSD Foundation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _ARMV8_CRYPTO_H_ 32 #define _ARMV8_CRYPTO_H_ 33 34 #define AES256_ROUNDS 14 35 #define AES_SCHED_LEN ((AES256_ROUNDS + 1) * AES_BLOCK_LEN) 36 37 typedef struct { 38 uint32_t aes_key[AES_SCHED_LEN/4]; 39 int aes_rounds; 40 } AES_key_t; 41 42 typedef union { 43 uint64_t u[2]; 44 uint32_t d[4]; 45 uint8_t c[16]; 46 size_t t[16 / sizeof(size_t)]; 47 } __uint128_val_t; 48 49 struct armv8_crypto_session { 50 AES_key_t enc_schedule; 51 AES_key_t dec_schedule; 52 AES_key_t xts_schedule; 53 __uint128_val_t Htable[16]; 54 }; 55 56 /* Prototypes for aesv8-armx.S */ 57 void aes_v8_encrypt(uint8_t *in, uint8_t *out, const AES_key_t *key); 58 int aes_v8_set_encrypt_key(const unsigned char *userKey, const int bits, const AES_key_t *key); 59 int aes_v8_set_decrypt_key(const unsigned char *userKey, const int bits, const AES_key_t *key); 60 61 /* Prototypes for ghashv8-armx.S */ 62 void gcm_init_v8(__uint128_val_t Htable[16], const uint64_t Xi[2]); 63 void gcm_gmult_v8(uint64_t Xi[2], const __uint128_val_t Htable[16]); 64 void gcm_ghash_v8(uint64_t Xi[2], const __uint128_val_t Htable[16], const uint8_t *inp, size_t len); 65 66 void armv8_aes_encrypt_cbc(const AES_key_t *key, size_t len, 67 struct crypto_buffer_cursor *fromc, struct crypto_buffer_cursor *toc, 68 const uint8_t iv[static AES_BLOCK_LEN]); 69 void armv8_aes_decrypt_cbc(const AES_key_t *, size_t, 70 struct crypto_buffer_cursor *fromc, struct crypto_buffer_cursor *toc, 71 const uint8_t[static AES_BLOCK_LEN]); 72 void armv8_aes_encrypt_gcm(AES_key_t *, size_t, 73 struct crypto_buffer_cursor *, struct crypto_buffer_cursor *, 74 size_t, const uint8_t *, 75 uint8_t tag[static GMAC_DIGEST_LEN], 76 const uint8_t[static AES_BLOCK_LEN], 77 const __uint128_val_t *); 78 int armv8_aes_decrypt_gcm(AES_key_t *, size_t, 79 struct crypto_buffer_cursor *, struct crypto_buffer_cursor *, 80 size_t, const uint8_t *, const uint8_t tag[static GMAC_DIGEST_LEN], 81 const uint8_t[static AES_BLOCK_LEN], 82 const __uint128_val_t *); 83 84 void armv8_aes_encrypt_xts(AES_key_t *, const void *, size_t, 85 struct crypto_buffer_cursor *, struct crypto_buffer_cursor *, 86 const uint8_t[AES_BLOCK_LEN]); 87 void armv8_aes_decrypt_xts(AES_key_t *, const void *, size_t, 88 struct crypto_buffer_cursor *, struct crypto_buffer_cursor *, 89 const uint8_t[AES_BLOCK_LEN]); 90 91 #endif /* _ARMV8_CRYPTO_H_ */ 92