/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2023 Stormshield * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _OSSL_AES_GCM_H_ #define _OSSL_AES_GCM_H_ #include struct ossl_gcm_context; struct ossl_aes_gcm_ops { void (*init)(struct ossl_gcm_context *ctx, const void *key, size_t keylen); void (*setiv)(struct ossl_gcm_context *ctx, const unsigned char *iv, size_t ivlen); int (*aad)(struct ossl_gcm_context *ctx, const unsigned char *aad, size_t len); int (*encrypt)(struct ossl_gcm_context *ctx, const unsigned char *in, unsigned char *out, size_t len); int (*decrypt)(struct ossl_gcm_context *ctx, const unsigned char *in, unsigned char *out, size_t len); int (*finish)(struct ossl_gcm_context *ctx, const unsigned char *tag, size_t len); void (*tag)(struct ossl_gcm_context *ctx, unsigned char *tag, size_t len); }; #ifndef __SIZEOF_INT128__ typedef struct { uint64_t v[2]; } __uint128_t; #endif struct ossl_gcm_context { struct { union { uint64_t u[2]; uint32_t d[4]; uint8_t c[16]; } Yi, EKi, EK0, len, Xi, H; __uint128_t Htable[16]; unsigned int mres, ares; } gcm; struct ossl_aes_keysched aes_ks; const struct ossl_aes_gcm_ops *ops; }; #endif /* !_OSSL_AES_GCM_H_ */