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OpenSSL provides implementations of several AES modes which use bitslicing and can be accelerated on CPUs which support the NEON extension. This patch adds arm platform support to ossl(4) and provides an AES-CBC implementation, though bsaes_cbc_encrypt() only implements decryption. The real goal is to provide an accelerated AES-GCM implementation; this will be added in a subsequent patch. Initially derived from https://reviews.freebsd.org/D37420. Reviewed by: jhb Sponsored by: Klara, Inc. Sponsored by: Stormshield MFC after: 3 months Differential Revision: https://reviews.freebsd.org/D41304
72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2023 Stormshield
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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_AES_GCM_H_
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#define _OSSL_AES_GCM_H_
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#include <crypto/openssl/ossl_cipher.h>
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struct ossl_gcm_context;
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struct ossl_aes_gcm_ops {
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void (*init)(struct ossl_gcm_context *ctx, const void *key,
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size_t keylen);
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void (*setiv)(struct ossl_gcm_context *ctx, const unsigned char *iv,
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size_t ivlen);
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int (*aad)(struct ossl_gcm_context *ctx, const unsigned char *aad,
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size_t len);
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int (*encrypt)(struct ossl_gcm_context *ctx, const unsigned char *in,
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unsigned char *out, size_t len);
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int (*decrypt)(struct ossl_gcm_context *ctx, const unsigned char *in,
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unsigned char *out, size_t len);
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int (*finish)(struct ossl_gcm_context *ctx, const unsigned char *tag,
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size_t len);
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void (*tag)(struct ossl_gcm_context *ctx, unsigned char *tag,
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size_t len);
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};
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#ifndef __SIZEOF_INT128__
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typedef struct { uint64_t v[2]; } __uint128_t;
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#endif
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struct ossl_gcm_context {
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struct {
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union {
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uint64_t u[2];
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uint32_t d[4];
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uint8_t c[16];
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} Yi, EKi, EK0, len, Xi, H;
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__uint128_t Htable[16];
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unsigned int mres, ares;
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} gcm;
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struct ossl_aes_keysched aes_ks;
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const struct ossl_aes_gcm_ops *ops;
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};
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#endif /* !_OSSL_AES_GCM_H_ */
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