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
91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/*
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* Copyright (c) 2020 Netflix, Inc
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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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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*
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* $FreeBSD$
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*/
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#ifndef __OSSL_H__
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#define __OSSL_H__
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/* Compatibility shims. */
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#define OPENSSL_cleanse explicit_bzero
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struct cryptop;
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struct crypto_session_params;
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struct ossl_softc;
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struct ossl_session;
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int ossl_chacha20_poly1305_decrypt(struct cryptop *crp,
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const struct crypto_session_params *csp);
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int ossl_chacha20_poly1305_encrypt(struct cryptop *crp,
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const struct crypto_session_params *csp);
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void ossl_cpuid(struct ossl_softc *sc);
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struct ossl_softc {
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int32_t sc_cid;
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bool has_aes;
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};
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/* Needs to be big enough to hold any hash context. */
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struct ossl_hash_context {
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uint32_t dummy[61];
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} __aligned(32);
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struct ossl_cipher_context {
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uint32_t dummy[61];
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} __aligned(32);
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struct ossl_session_hash {
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struct ossl_hash_context ictx;
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struct ossl_hash_context octx;
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struct auth_hash *axf;
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u_int mlen;
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};
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struct ossl_session_cipher {
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struct ossl_cipher_context dec_ctx;
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struct ossl_cipher_context enc_ctx;
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struct ossl_cipher *cipher;
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};
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struct ossl_session {
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struct ossl_session_cipher cipher;
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struct ossl_session_hash hash;
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};
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extern struct auth_hash ossl_hash_poly1305;
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extern struct auth_hash ossl_hash_sha1;
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extern struct auth_hash ossl_hash_sha224;
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extern struct auth_hash ossl_hash_sha256;
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extern struct auth_hash ossl_hash_sha384;
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extern struct auth_hash ossl_hash_sha512;
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extern struct ossl_cipher ossl_cipher_aes_cbc;
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extern struct ossl_cipher ossl_cipher_chacha20;
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#endif /* !__OSSL_H__ */
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