1 // SPDX-License-Identifier: BSD-2-Clause 2 /* 3 * Copyright (c) 2018 Sean Eric Fagan <sef@ixsystems.com> 4 * Portions Copyright (c) 2005-2011 Pawel Jakub Dawidek <pawel@dawidek.net> 5 * All rights reserved. 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 * Portions of this file were taken from GELI's implementation of hmac. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef _ZFS_FREEBSD_CRYPTO_H 34 #define _ZFS_FREEBSD_CRYPTO_H 35 36 #include <sys/errno.h> 37 #include <sys/mutex.h> 38 #include <opencrypto/cryptodev.h> 39 #include <crypto/sha2/sha256.h> 40 #include <crypto/sha2/sha512.h> 41 42 #define SUN_CKM_AES_CCM "CKM_AES_CCM" 43 #define SUN_CKM_AES_GCM "CKM_AES_GCM" 44 #define SUN_CKM_SHA512_HMAC "CKM_SHA512_HMAC" 45 46 #define CRYPTO_BITS2BYTES(n) ((n) == 0 ? 0 : (((n) - 1) >> 3) + 1) 47 #define CRYPTO_BYTES2BITS(n) ((n) << 3) 48 49 struct zio_crypt_info; 50 51 typedef struct freebsd_crypt_session { 52 struct mtx fs_lock; 53 crypto_session_t fs_sid; 54 boolean_t fs_done; 55 } freebsd_crypt_session_t; 56 57 /* 58 * Unused types to minimize code differences. 59 */ 60 typedef void *crypto_mechanism_t; 61 typedef void *crypto_ctx_template_t; 62 /* 63 * Like the ICP crypto_key type, this only 64 * supports <data, length> (the equivalent of 65 * the former CRYPTO_KEY_RAW). 66 */ 67 typedef struct crypto_key { 68 void *ck_data; 69 size_t ck_length; 70 } crypto_key_t; 71 72 typedef struct hmac_ctx { 73 SHA512_CTX innerctx; 74 SHA512_CTX outerctx; 75 } *crypto_context_t; 76 77 /* 78 * The only algorithm ZFS uses for hashing is SHA512_HMAC. 79 */ 80 void crypto_mac(const crypto_key_t *key, const void *in_data, 81 size_t in_data_size, void *out_data, size_t out_data_size); 82 void crypto_mac_init(struct hmac_ctx *ctx, const crypto_key_t *key); 83 void crypto_mac_update(struct hmac_ctx *ctx, const void *data, 84 size_t data_size); 85 void crypto_mac_final(struct hmac_ctx *ctx, void *out_data, 86 size_t out_data_size); 87 88 int freebsd_crypt_newsession(freebsd_crypt_session_t *sessp, 89 const struct zio_crypt_info *, crypto_key_t *); 90 void freebsd_crypt_freesession(freebsd_crypt_session_t *sessp); 91 92 int freebsd_crypt_uio(boolean_t, freebsd_crypt_session_t *, 93 const struct zio_crypt_info *, zfs_uio_t *, crypto_key_t *, uint8_t *, 94 size_t, size_t); 95 96 #endif /* _ZFS_FREEBSD_CRYPTO_H */ 97