1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _AES_IMPL_H 27 #define _AES_IMPL_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 /* 32 * Common definitions used by AES. 33 */ 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 #include <sys/types.h> 40 41 /* Similar to sysmacros.h IS_P2ALIGNED, but checks two pointers: */ 42 #define IS_P2ALIGNED2(v, w, a) \ 43 ((((uintptr_t)(v) | (uintptr_t)(w)) & ((uintptr_t)(a) - 1)) == 0) 44 45 #define AES_BLOCK_LEN 16 /* bytes */ 46 /* Round constant length, in number of 32-bit elements: */ 47 #define RC_LENGTH (5 * ((AES_BLOCK_LEN) / 4 - 2)) 48 49 #define AES_COPY_BLOCK(src, dst) \ 50 (dst)[0] = (src)[0]; \ 51 (dst)[1] = (src)[1]; \ 52 (dst)[2] = (src)[2]; \ 53 (dst)[3] = (src)[3]; \ 54 (dst)[4] = (src)[4]; \ 55 (dst)[5] = (src)[5]; \ 56 (dst)[6] = (src)[6]; \ 57 (dst)[7] = (src)[7]; \ 58 (dst)[8] = (src)[8]; \ 59 (dst)[9] = (src)[9]; \ 60 (dst)[10] = (src)[10]; \ 61 (dst)[11] = (src)[11]; \ 62 (dst)[12] = (src)[12]; \ 63 (dst)[13] = (src)[13]; \ 64 (dst)[14] = (src)[14]; \ 65 (dst)[15] = (src)[15] 66 67 #define AES_XOR_BLOCK(src, dst) \ 68 (dst)[0] ^= (src)[0]; \ 69 (dst)[1] ^= (src)[1]; \ 70 (dst)[2] ^= (src)[2]; \ 71 (dst)[3] ^= (src)[3]; \ 72 (dst)[4] ^= (src)[4]; \ 73 (dst)[5] ^= (src)[5]; \ 74 (dst)[6] ^= (src)[6]; \ 75 (dst)[7] ^= (src)[7]; \ 76 (dst)[8] ^= (src)[8]; \ 77 (dst)[9] ^= (src)[9]; \ 78 (dst)[10] ^= (src)[10]; \ 79 (dst)[11] ^= (src)[11]; \ 80 (dst)[12] ^= (src)[12]; \ 81 (dst)[13] ^= (src)[13]; \ 82 (dst)[14] ^= (src)[14]; \ 83 (dst)[15] ^= (src)[15] 84 85 /* AES key size definitions */ 86 #define AES_MINBITS 128 87 #define AES_MINBYTES ((AES_MINBITS) >> 3) 88 #define AES_MAXBITS 256 89 #define AES_MAXBYTES ((AES_MAXBITS) >> 3) 90 91 #define AES_MIN_KEY_BYTES ((AES_MINBITS) >> 3) 92 #define AES_MAX_KEY_BYTES ((AES_MAXBITS) >> 3) 93 #define AES_192_KEY_BYTES 24 94 #define AES_IV_LEN 16 95 96 /* AES key schedule may be implemented with 32- or 64-bit elements: */ 97 #define AES_32BIT_KS 32 98 #define AES_64BIT_KS 64 99 100 #define MAX_AES_NR 14 /* Maximum number of rounds */ 101 #define MAX_AES_NB 4 /* Number of columns comprising a state */ 102 103 typedef union { 104 #ifdef sun4u 105 uint64_t ks64[((MAX_AES_NR) + 1) * (MAX_AES_NB)]; 106 #endif 107 uint32_t ks32[((MAX_AES_NR) + 1) * (MAX_AES_NB)]; 108 } aes_ks_t; 109 110 typedef struct aes_key aes_key_t; 111 struct aes_key { 112 int nr; 113 int type; 114 aes_ks_t encr_ks; 115 aes_ks_t decr_ks; 116 }; 117 118 extern void aes_encrypt_block(const void *ks, const uint8_t *pt, uint8_t *ct); 119 extern void aes_decrypt_block(const void *ks, const uint8_t *ct, uint8_t *pt); 120 extern void aes_init_keysched(const uint8_t *cipherKey, uint_t keyBits, 121 void *keysched); 122 extern void *aes_alloc_keysched(size_t *size, int kmflag); 123 124 #ifdef __cplusplus 125 } 126 #endif 127 128 #endif /* _AES_IMPL_H */ 129