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 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 * 25 * Copyright 2018, Joyent, Inc. 26 */ 27 28 #ifndef _AES_IMPL_H 29 #define _AES_IMPL_H 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 #include <sys/crypto/common.h> 41 42 /* Similar to sysmacros.h IS_P2ALIGNED, but checks two pointers: */ 43 #define IS_P2ALIGNED2(v, w, a) \ 44 ((((uintptr_t)(v) | (uintptr_t)(w)) & ((uintptr_t)(a) - 1)) == 0) 45 46 #define AES_BLOCK_LEN 16 /* bytes */ 47 /* Round constant length, in number of 32-bit elements: */ 48 #define RC_LENGTH (5 * ((AES_BLOCK_LEN) / 4 - 2)) 49 50 #define AES_COPY_BLOCK(src, dst) \ 51 (dst)[0] = (src)[0]; \ 52 (dst)[1] = (src)[1]; \ 53 (dst)[2] = (src)[2]; \ 54 (dst)[3] = (src)[3]; \ 55 (dst)[4] = (src)[4]; \ 56 (dst)[5] = (src)[5]; \ 57 (dst)[6] = (src)[6]; \ 58 (dst)[7] = (src)[7]; \ 59 (dst)[8] = (src)[8]; \ 60 (dst)[9] = (src)[9]; \ 61 (dst)[10] = (src)[10]; \ 62 (dst)[11] = (src)[11]; \ 63 (dst)[12] = (src)[12]; \ 64 (dst)[13] = (src)[13]; \ 65 (dst)[14] = (src)[14]; \ 66 (dst)[15] = (src)[15] 67 68 #define AES_XOR_BLOCK(src, dst) \ 69 (dst)[0] ^= (src)[0]; \ 70 (dst)[1] ^= (src)[1]; \ 71 (dst)[2] ^= (src)[2]; \ 72 (dst)[3] ^= (src)[3]; \ 73 (dst)[4] ^= (src)[4]; \ 74 (dst)[5] ^= (src)[5]; \ 75 (dst)[6] ^= (src)[6]; \ 76 (dst)[7] ^= (src)[7]; \ 77 (dst)[8] ^= (src)[8]; \ 78 (dst)[9] ^= (src)[9]; \ 79 (dst)[10] ^= (src)[10]; \ 80 (dst)[11] ^= (src)[11]; \ 81 (dst)[12] ^= (src)[12]; \ 82 (dst)[13] ^= (src)[13]; \ 83 (dst)[14] ^= (src)[14]; \ 84 (dst)[15] ^= (src)[15] 85 86 /* AES key size definitions */ 87 #define AES_MINBITS 128 88 #define AES_MINBYTES ((AES_MINBITS) >> 3) 89 #define AES_MAXBITS 256 90 #define AES_MAXBYTES ((AES_MAXBITS) >> 3) 91 92 #define AES_MIN_KEY_BYTES ((AES_MINBITS) >> 3) 93 #define AES_MAX_KEY_BYTES ((AES_MAXBITS) >> 3) 94 #define AES_192_KEY_BYTES 24 95 #define AES_IV_LEN 16 96 97 /* AES key schedule may be implemented with 32- or 64-bit elements: */ 98 #define AES_32BIT_KS 32 99 #define AES_64BIT_KS 64 100 101 #define MAX_AES_NR 14 /* Maximum number of rounds */ 102 #define MAX_AES_NB 4 /* Number of columns comprising a state */ 103 104 typedef union { 105 #ifdef sun4u 106 uint64_t ks64[((MAX_AES_NR) + 1) * (MAX_AES_NB)]; 107 #endif 108 uint32_t ks32[((MAX_AES_NR) + 1) * (MAX_AES_NB)]; 109 } aes_ks_t; 110 111 /* aes_key.flags value: */ 112 #define INTEL_AES_NI_CAPABLE 0x1 /* AES-NI instructions present */ 113 114 typedef struct aes_key aes_key_t; 115 struct aes_key { 116 aes_ks_t encr_ks; /* encryption key schedule */ 117 aes_ks_t decr_ks; /* decryption key schedule */ 118 #ifdef __amd64 119 long double align128; /* Align fields above for Intel AES-NI */ 120 int flags; /* implementation-dependent flags */ 121 #endif /* __amd64 */ 122 int nr; /* number of rounds (10, 12, or 14) */ 123 int type; /* key schedule size (32 or 64 bits) */ 124 }; 125 126 /* 127 * Core AES functions. 128 * ks and keysched are pointers to aes_key_t. 129 * They are declared void* as they are intended to be opaque types. 130 * Use function aes_alloc_keysched() to allocate memory for ks and keysched. 131 */ 132 extern void *aes_alloc_keysched(size_t *size, int kmflag); 133 extern void aes_init_keysched(const uint8_t *cipherKey, uint_t keyBits, 134 void *keysched); 135 extern int aes_encrypt_block(const void *ks, const uint8_t *pt, uint8_t *ct); 136 extern int aes_decrypt_block(const void *ks, const uint8_t *ct, uint8_t *pt); 137 138 /* 139 * AES mode functions. 140 * The first 3 functions operate on 16-byte AES blocks. 141 */ 142 extern void aes_copy_block(uint8_t *in, uint8_t *out); 143 extern void aes_copy_block64(uint8_t *in, uint64_t *out); 144 extern void aes_xor_block(uint8_t *data, uint8_t *dst); 145 146 /* Note: ctx is a pointer to aes_ctx_t defined in modes.h */ 147 extern int aes_encrypt_contiguous_blocks(void *ctx, char *data, size_t length, 148 crypto_data_t *out); 149 extern int aes_decrypt_contiguous_blocks(void *ctx, char *data, size_t length, 150 crypto_data_t *out); 151 152 /* 153 * The following definitions and declarations are only used by AES FIPS POST 154 */ 155 #ifdef _AES_IMPL 156 157 #ifdef _KERNEL 158 typedef enum aes_mech_type { 159 AES_ECB_MECH_INFO_TYPE, /* SUN_CKM_AES_ECB */ 160 AES_CBC_MECH_INFO_TYPE, /* SUN_CKM_AES_CBC */ 161 AES_CBC_PAD_MECH_INFO_TYPE, /* SUN_CKM_AES_CBC_PAD */ 162 AES_CTR_MECH_INFO_TYPE, /* SUN_CKM_AES_CTR */ 163 AES_CCM_MECH_INFO_TYPE, /* SUN_CKM_AES_CCM */ 164 AES_GCM_MECH_INFO_TYPE, /* SUN_CKM_AES_GCM */ 165 AES_GMAC_MECH_INFO_TYPE, /* SUN_CKM_AES_GMAC */ 166 AES_CMAC_MECH_INFO_TYPE /* SUN_CKM_AES_CMAC */ 167 } aes_mech_type_t; 168 169 #endif /* _KERNEL */ 170 #endif /* _AES_IMPL */ 171 172 #ifdef __cplusplus 173 } 174 #endif 175 176 #endif /* _AES_IMPL_H */ 177