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      1 /*	$NetBSD: aes.h,v 1.5 2025/11/22 22:32:39 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2020 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef	_CRYPTO_AES_AES_H
     30 #define	_CRYPTO_AES_AES_H
     31 
     32 #include <sys/types.h>
     33 #include <sys/cdefs.h>
     34 
     35 /*
     36  * struct aes
     37  *
     38  *	Expanded round keys, in implementation-dependent format.  (For
     39  *	the standard AES key schedule, see aes_keysched.h.)
     40  */
     41 union aes {
     42 	uint32_t	aes_rk[60];
     43 	uint64_t	aes_rk64[30];
     44 } __aligned(16);
     45 
     46 #define	AES_128_NROUNDS	10
     47 #define	AES_192_NROUNDS	12
     48 #define	AES_256_NROUNDS	14
     49 
     50 struct aesenc {
     51 	union aes	aese_aes;
     52 };
     53 
     54 struct aesdec {
     55 	union aes	aesd_aes;
     56 };
     57 
     58 uint32_t aes_setenckey128(struct aesenc *, const uint8_t[static 16]);
     59 uint32_t aes_setenckey192(struct aesenc *, const uint8_t[static 24]);
     60 uint32_t aes_setenckey256(struct aesenc *, const uint8_t[static 32]);
     61 uint32_t aes_setdeckey128(struct aesdec *, const uint8_t[static 16]);
     62 uint32_t aes_setdeckey192(struct aesdec *, const uint8_t[static 24]);
     63 uint32_t aes_setdeckey256(struct aesdec *, const uint8_t[static 32]);
     64 
     65 void	aes_enc(const struct aesenc *, const uint8_t[static 16],
     66 	    uint8_t[static 16], uint32_t);
     67 void	aes_dec(const struct aesdec *, const uint8_t[static 16],
     68 	    uint8_t[static 16], uint32_t);
     69 
     70 #endif	/* _CRYPTO_AES_AES_H */
     71