/*      $NetBSD: aes_impl.h,v 1.2 2020/07/25 22:27:53 riastradh Exp $   */

/*-
* Copyright (c) 2020 The NetBSD Foundation, Inc.
* All rights reserved.
*
* 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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 _CRYPTO_AES_AES_IMPL_H
#define _CRYPTO_AES_AES_IMPL_H

#include <sys/types.h>

struct aesenc;
struct aesdec;

struct aes_impl {
       const char *ai_name;
       int     (*ai_probe)(void);
       void    (*ai_setenckey)(struct aesenc *, const uint8_t *, uint32_t);
       void    (*ai_setdeckey)(struct aesdec *, const uint8_t *, uint32_t);
       void    (*ai_enc)(const struct aesenc *, const uint8_t[static 16],
                   uint8_t[static 16], uint32_t);
       void    (*ai_dec)(const struct aesdec *, const uint8_t[static 16],
                   uint8_t[static 16], uint32_t);
       void    (*ai_cbc_enc)(const struct aesenc *, const uint8_t[static 16],
                   uint8_t[static 16], size_t, uint8_t[static 16], uint32_t);
       void    (*ai_cbc_dec)(const struct aesdec *, const uint8_t[static 16],
                   uint8_t[static 16], size_t, uint8_t[static 16], uint32_t);
       void    (*ai_xts_enc)(const struct aesenc *, const uint8_t[static 16],
                   uint8_t[static 16], size_t, uint8_t[static 16], uint32_t);
       void    (*ai_xts_dec)(const struct aesdec *, const uint8_t[static 16],
                   uint8_t[static 16], size_t, uint8_t[static 16], uint32_t);
       void    (*ai_cbcmac_update1)(const struct aesenc *,
                   const uint8_t[static 16], size_t, uint8_t[static 16],
                   uint32_t);
       void    (*ai_ccm_enc1)(const struct aesenc *,
                   const uint8_t[static 16], uint8_t[static 16],
                   size_t, uint8_t[static 32], uint32_t);
       void    (*ai_ccm_dec1)(const struct aesenc *,
                   const uint8_t[static 16], uint8_t[static 16],
                   size_t, uint8_t[static 32], uint32_t);
};

void    aes_md_init(const struct aes_impl *);

int     aes_selftest(const struct aes_impl *);

/* Internal subroutines dispatched to implementation for AES-CCM.  */
void    aes_cbcmac_update1(const struct aesenc *, const uint8_t[static 16],
           size_t, uint8_t[static 16], uint32_t);
void    aes_ccm_enc1(const struct aesenc *, const uint8_t[static 16],
           uint8_t[static 16], size_t, uint8_t[static 32], uint32_t);
void    aes_ccm_dec1(const struct aesenc *, const uint8_t[static 16],
           uint8_t[static 16], size_t, uint8_t[static 32], uint32_t);

#endif  /* _CRYPTO_AES_AES_IMPL_H */