1 /* $NetBSD: crypto.h,v 1.1.1.2 2014/04/24 12:45:49 pettai Exp $ */ 2 3 /* 4 * Copyright (c) 1997 - 2008 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef HEIMDAL_SMALLER 37 #define DES3_OLD_ENCTYPE 1 38 #endif 39 40 struct _krb5_key_data { 41 krb5_keyblock *key; 42 krb5_data *schedule; 43 }; 44 45 struct _krb5_key_usage; 46 47 struct krb5_crypto_data { 48 struct _krb5_encryption_type *et; 49 struct _krb5_key_data key; 50 int num_key_usage; 51 struct _krb5_key_usage *key_usage; 52 }; 53 54 #define CRYPTO_ETYPE(C) ((C)->et->type) 55 56 /* bits for `flags' below */ 57 #define F_KEYED 1 /* checksum is keyed */ 58 #define F_CPROOF 2 /* checksum is collision proof */ 59 #define F_DERIVED 4 /* uses derived keys */ 60 #define F_VARIANT 8 /* uses `variant' keys (6.4.3) */ 61 #define F_PSEUDO 16 /* not a real protocol type */ 62 #define F_SPECIAL 32 /* backwards */ 63 #define F_DISABLED 64 /* enctype/checksum disabled */ 64 #define F_WEAK 128 /* enctype is considered weak */ 65 66 struct salt_type { 67 krb5_salttype type; 68 const char *name; 69 krb5_error_code (*string_to_key)(krb5_context, krb5_enctype, krb5_data, 70 krb5_salt, krb5_data, krb5_keyblock*); 71 }; 72 73 struct _krb5_key_type { 74 krb5_enctype type; 75 const char *name; 76 size_t bits; 77 size_t size; 78 size_t schedule_size; 79 void (*random_key)(krb5_context, krb5_keyblock*); 80 void (*schedule)(krb5_context, struct _krb5_key_type *, struct _krb5_key_data *); 81 struct salt_type *string_to_key; 82 void (*random_to_key)(krb5_context, krb5_keyblock*, const void*, size_t); 83 void (*cleanup)(krb5_context, struct _krb5_key_data *); 84 const EVP_CIPHER *(*evp)(void); 85 }; 86 87 struct _krb5_checksum_type { 88 krb5_cksumtype type; 89 const char *name; 90 size_t blocksize; 91 size_t checksumsize; 92 unsigned flags; 93 krb5_error_code (*checksum)(krb5_context context, 94 struct _krb5_key_data *key, 95 const void *buf, size_t len, 96 unsigned usage, 97 Checksum *csum); 98 krb5_error_code (*verify)(krb5_context context, 99 struct _krb5_key_data *key, 100 const void *buf, size_t len, 101 unsigned usage, 102 Checksum *csum); 103 }; 104 105 struct _krb5_encryption_type { 106 krb5_enctype type; 107 const char *name; 108 size_t blocksize; 109 size_t padsize; 110 size_t confoundersize; 111 struct _krb5_key_type *keytype; 112 struct _krb5_checksum_type *checksum; 113 struct _krb5_checksum_type *keyed_checksum; 114 unsigned flags; 115 krb5_error_code (*encrypt)(krb5_context context, 116 struct _krb5_key_data *key, 117 void *data, size_t len, 118 krb5_boolean encryptp, 119 int usage, 120 void *ivec); 121 size_t prf_length; 122 krb5_error_code (*prf)(krb5_context, 123 krb5_crypto, const krb5_data *, krb5_data *); 124 }; 125 126 #define ENCRYPTION_USAGE(U) (((U) << 8) | 0xAA) 127 #define INTEGRITY_USAGE(U) (((U) << 8) | 0x55) 128 #define CHECKSUM_USAGE(U) (((U) << 8) | 0x99) 129 130 /* Checksums */ 131 132 extern struct _krb5_checksum_type _krb5_checksum_none; 133 extern struct _krb5_checksum_type _krb5_checksum_crc32; 134 extern struct _krb5_checksum_type _krb5_checksum_rsa_md4; 135 extern struct _krb5_checksum_type _krb5_checksum_rsa_md4_des; 136 extern struct _krb5_checksum_type _krb5_checksum_rsa_md5_des; 137 extern struct _krb5_checksum_type _krb5_checksum_rsa_md5_des3; 138 extern struct _krb5_checksum_type _krb5_checksum_rsa_md5; 139 extern struct _krb5_checksum_type _krb5_checksum_hmac_sha1_des3; 140 extern struct _krb5_checksum_type _krb5_checksum_hmac_sha1_aes128; 141 extern struct _krb5_checksum_type _krb5_checksum_hmac_sha1_aes256; 142 extern struct _krb5_checksum_type _krb5_checksum_hmac_md5; 143 extern struct _krb5_checksum_type _krb5_checksum_sha1; 144 145 extern struct _krb5_checksum_type *_krb5_checksum_types[]; 146 extern int _krb5_num_checksums; 147 148 /* Salts */ 149 150 extern struct salt_type _krb5_AES_salt[]; 151 extern struct salt_type _krb5_arcfour_salt[]; 152 extern struct salt_type _krb5_des_salt[]; 153 extern struct salt_type _krb5_des3_salt[]; 154 extern struct salt_type _krb5_des3_salt_derived[]; 155 156 /* Encryption types */ 157 158 extern struct _krb5_encryption_type _krb5_enctype_aes256_cts_hmac_sha1; 159 extern struct _krb5_encryption_type _krb5_enctype_aes128_cts_hmac_sha1; 160 extern struct _krb5_encryption_type _krb5_enctype_des3_cbc_sha1; 161 extern struct _krb5_encryption_type _krb5_enctype_des3_cbc_md5; 162 extern struct _krb5_encryption_type _krb5_enctype_des3_cbc_none; 163 extern struct _krb5_encryption_type _krb5_enctype_arcfour_hmac_md5; 164 extern struct _krb5_encryption_type _krb5_enctype_des_cbc_md5; 165 extern struct _krb5_encryption_type _krb5_enctype_old_des3_cbc_sha1; 166 extern struct _krb5_encryption_type _krb5_enctype_des_cbc_crc; 167 extern struct _krb5_encryption_type _krb5_enctype_des_cbc_md4; 168 extern struct _krb5_encryption_type _krb5_enctype_des_cbc_md5; 169 extern struct _krb5_encryption_type _krb5_enctype_des_cbc_none; 170 extern struct _krb5_encryption_type _krb5_enctype_des_cfb64_none; 171 extern struct _krb5_encryption_type _krb5_enctype_des_pcbc_none; 172 extern struct _krb5_encryption_type _krb5_enctype_null; 173 174 extern struct _krb5_encryption_type *_krb5_etypes[]; 175 extern int _krb5_num_etypes; 176 177 /* Interface to the EVP crypto layer provided by hcrypto */ 178 struct _krb5_evp_schedule { 179 EVP_CIPHER_CTX ectx; 180 EVP_CIPHER_CTX dctx; 181 }; 182