197ff4c35b
AES-CBC OpenSSL assembly is used underneath. The glue layer(ossl_aes.c) is based on CHACHA20 implementation. Contrary to the SHA and CHACHA20, AES OpenSSL assembly logic does not have a fallback implementation in case CPU doesn't support required instructions. Because of that CPU caps are checked during initialization and AES support is advertised only if available. The feature is available on all architectures that ossl supports: i386, amd64, arm64. The biggest advantage of this patch over existing solutions (aesni(4) and armv8crypto(4)) is that it supports SHA, allowing for ETA operations. Sponsored by: Stormshield Obtained from: Semihalf Reviewed by: jhb (previous version) Differential revision: https://reviews.freebsd.org/D32099
54 lines
2.0 KiB
C
54 lines
2.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2021 Stormshield.
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* Copyright (c) 2021 Semihalf.
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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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __OSSL_CIPHER_H__
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#define __OSSL_CIPHER_H__
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struct ossl_session_cipher;
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struct cryptop;
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struct crypto_session_params;
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typedef int (ossl_cipher_setkey_t)(const unsigned char*, int, void*);
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typedef int (ossl_cipher_process_t)(struct ossl_session_cipher*, struct cryptop*,
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const struct crypto_session_params*);
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typedef void (ossl_cipher_encrypt_t)(const unsigned char*, unsigned char*, size_t,
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const void*, unsigned char*, int);
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ossl_cipher_encrypt_t ossl_aes_cbc_encrypt;
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struct ossl_cipher {
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int type;
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uint16_t blocksize;
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uint16_t ivsize;
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ossl_cipher_setkey_t *set_encrypt_key;
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ossl_cipher_setkey_t *set_decrypt_key;
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ossl_cipher_process_t *process;
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};
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#endif
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