2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
5 * Authors: Doug Rabson <dfr@rabson.org>
6 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/_iovec.h>
35 #define ETYPE_DES_CBC_CRC 1
36 #define ETYPE_DES_CBC_MD4 2
37 #define ETYPE_DES_CBC_MD5 3
38 #define ETYPE_DES3_CBC_MD5 5
39 #define ETYPE_OLD_DES3_CBC_SHA1 7
40 #define ETYPE_DES3_CBC_SHA1 16
41 #define ETYPE_AES128_CTS_HMAC_SHA1_96 17
42 #define ETYPE_AES256_CTS_HMAC_SHA1_96 18
43 #define ETYPE_ARCFOUR_HMAC_MD5 23
44 #define ETYPE_ARCFOUR_HMAC_MD5_56 24
47 * Key usages for des3-cbc-sha1 tokens
49 #define KG_USAGE_SEAL 22
50 #define KG_USAGE_SIGN 23
51 #define KG_USAGE_SEQ 24
54 * Key usages for RFC4121 tokens
56 #define KG_USAGE_ACCEPTOR_SEAL 22
57 #define KG_USAGE_ACCEPTOR_SIGN 23
58 #define KG_USAGE_INITIATOR_SEAL 24
59 #define KG_USAGE_INITIATOR_SIGN 25
61 struct krb5_key_state;
63 typedef void init_func(struct krb5_key_state *ks);
64 typedef void destroy_func(struct krb5_key_state *ks);
65 typedef void set_key_func(struct krb5_key_state *ks, const void *in);
66 typedef void random_to_key_func(struct krb5_key_state *ks, const void *in);
67 typedef void encrypt_func(const struct krb5_key_state *ks,
68 struct mbuf *inout, size_t skip, size_t len, void *ivec, size_t ivlen);
69 typedef void checksum_func(const struct krb5_key_state *ks, int usage,
70 struct mbuf *inout, size_t skip, size_t inlen, size_t outlen);
72 struct krb5_encryption_class {
76 #define EC_DERIVED_KEYS 1
78 size_t ec_msgblocklen;
79 size_t ec_checksumlen;
80 size_t ec_keybits; /* key length in bits */
81 size_t ec_keylen; /* size of key in memory */
83 destroy_func *ec_destroy;
84 set_key_func *ec_set_key;
85 random_to_key_func *ec_random_to_key;
86 encrypt_func *ec_encrypt;
87 encrypt_func *ec_decrypt;
88 checksum_func *ec_checksum;
91 struct krb5_key_state {
92 const struct krb5_encryption_class *ks_class;
93 volatile u_int ks_refs;
98 extern struct krb5_encryption_class krb5_aes128_encryption_class;
99 extern struct krb5_encryption_class krb5_aes256_encryption_class;
102 krb5_set_key(struct krb5_key_state *ks, const void *keydata)
105 ks->ks_class->ec_set_key(ks, keydata);
109 krb5_random_to_key(struct krb5_key_state *ks, const void *keydata)
112 ks->ks_class->ec_random_to_key(ks, keydata);
116 krb5_encrypt(const struct krb5_key_state *ks, struct mbuf *inout,
117 size_t skip, size_t len, void *ivec, size_t ivlen)
120 ks->ks_class->ec_encrypt(ks, inout, skip, len, ivec, ivlen);
124 krb5_decrypt(const struct krb5_key_state *ks, struct mbuf *inout,
125 size_t skip, size_t len, void *ivec, size_t ivlen)
128 ks->ks_class->ec_decrypt(ks, inout, skip, len, ivec, ivlen);
132 krb5_checksum(const struct krb5_key_state *ks, int usage,
133 struct mbuf *inout, size_t skip, size_t inlen, size_t outlen)
136 ks->ks_class->ec_checksum(ks, usage, inout, skip, inlen, outlen);
139 extern struct krb5_encryption_class *
140 krb5_find_encryption_class(int etype);
141 extern struct krb5_key_state *
142 krb5_create_key(const struct krb5_encryption_class *ec);
143 extern void krb5_free_key(struct krb5_key_state *ks);
144 extern struct krb5_key_state *
145 krb5_derive_key(struct krb5_key_state *inkey,
146 void *constant, size_t constantlen);
147 extern struct krb5_key_state *
148 krb5_get_encryption_key(struct krb5_key_state *basekey, int usage);
149 extern struct krb5_key_state *
150 krb5_get_integrity_key(struct krb5_key_state *basekey, int usage);
151 extern struct krb5_key_state *
152 krb5_get_checksum_key(struct krb5_key_state *basekey, int usage);