99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
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/*
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* Copyright (c) 2018 Sean Eric Fagan <sef@ixsystems.com>
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* Portions Copyright (c) 2005-2011 Pawel Jakub Dawidek <pawel@dawidek.net>
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* All rights reserved.
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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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* Portions of this file were taken from GELI's implementation of hmac.
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*
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* $FreeBSD$
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*/
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#ifndef _ZFS_FREEBSD_CRYPTO_H
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#define _ZFS_FREEBSD_CRYPTO_H
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#include <sys/errno.h>
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#include <sys/mutex.h>
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#include <opencrypto/cryptodev.h>
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#include <crypto/sha2/sha256.h>
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#include <crypto/sha2/sha512.h>
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#define SUN_CKM_AES_CCM "CKM_AES_CCM"
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#define SUN_CKM_AES_GCM "CKM_AES_GCM"
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#define SUN_CKM_SHA512_HMAC "CKM_SHA512_HMAC"
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#define CRYPTO_KEY_RAW 1
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#define CRYPTO_BITS2BYTES(n) ((n) == 0 ? 0 : (((n) - 1) >> 3) + 1)
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#define CRYPTO_BYTES2BITS(n) ((n) << 3)
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struct zio_crypt_info;
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typedef struct freebsd_crypt_session {
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struct mtx fs_lock;
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crypto_session_t fs_sid;
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boolean_t fs_done;
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} freebsd_crypt_session_t;
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/*
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* Unused types to minimize code differences.
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*/
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typedef void *crypto_mechanism_t;
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typedef void *crypto_ctx_template_t;
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/*
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* Unlike the ICP crypto_key type, this only
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* supports <data, length> (the equivalent of
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* CRYPTO_KEY_RAW).
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*/
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typedef struct crypto_key {
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int ck_format; /* Unused, but minimizes code diff */
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void *ck_data;
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size_t ck_length;
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} crypto_key_t;
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typedef struct hmac_ctx {
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SHA512_CTX innerctx;
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SHA512_CTX outerctx;
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} *crypto_context_t;
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/*
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* The only algorithm ZFS uses for hashing is SHA512_HMAC.
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*/
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void crypto_mac(const crypto_key_t *key, const void *in_data,
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size_t in_data_size, void *out_data, size_t out_data_size);
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void crypto_mac_init(struct hmac_ctx *ctx, const crypto_key_t *key);
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void crypto_mac_update(struct hmac_ctx *ctx, const void *data,
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size_t data_size);
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void crypto_mac_final(struct hmac_ctx *ctx, void *out_data,
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size_t out_data_size);
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int freebsd_crypt_newsession(freebsd_crypt_session_t *sessp,
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struct zio_crypt_info *, crypto_key_t *);
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void freebsd_crypt_freesession(freebsd_crypt_session_t *sessp);
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int freebsd_crypt_uio(boolean_t, freebsd_crypt_session_t *,
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struct zio_crypt_info *, uio_t *, crypto_key_t *, uint8_t *,
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size_t, size_t);
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#endif /* _ZFS_FREEBSD_CRYPTO_H */
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