2 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
3 * Authors: Doug Rabson <dfr@rabson.org>
4 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/_iovec.h>
33 #define ETYPE_DES_CBC_CRC 1
34 #define ETYPE_DES_CBC_MD4 2
35 #define ETYPE_DES_CBC_MD5 3
36 #define ETYPE_DES3_CBC_MD5 5
37 #define ETYPE_OLD_DES3_CBC_SHA1 7
38 #define ETYPE_DES3_CBC_SHA1 16
39 #define ETYPE_AES128_CTS_HMAC_SHA1_96 17
40 #define ETYPE_AES256_CTS_HMAC_SHA1_96 18
41 #define ETYPE_ARCFOUR_HMAC_MD5 23
42 #define ETYPE_ARCFOUR_HMAC_MD5_56 24
45 * Key usages for des3-cbc-sha1 tokens
47 #define KG_USAGE_SEAL 22
48 #define KG_USAGE_SIGN 23
49 #define KG_USAGE_SEQ 24
52 * Key usages for RFC4121 tokens
54 #define KG_USAGE_ACCEPTOR_SEAL 22
55 #define KG_USAGE_ACCEPTOR_SIGN 23
56 #define KG_USAGE_INITIATOR_SEAL 24
57 #define KG_USAGE_INITIATOR_SIGN 25
59 struct krb5_key_state;
61 typedef void init_func(struct krb5_key_state *ks);
62 typedef void destroy_func(struct krb5_key_state *ks);
63 typedef void set_key_func(struct krb5_key_state *ks, const void *in);
64 typedef void random_to_key_func(struct krb5_key_state *ks, const void *in);
65 typedef void encrypt_func(const struct krb5_key_state *ks,
66 struct mbuf *inout, size_t skip, size_t len, void *ivec, size_t ivlen);
67 typedef void checksum_func(const struct krb5_key_state *ks, int usage,
68 struct mbuf *inout, size_t skip, size_t inlen, size_t outlen);
70 struct krb5_encryption_class {
74 #define EC_DERIVED_KEYS 1
76 size_t ec_msgblocklen;
77 size_t ec_checksumlen;
78 size_t ec_keybits; /* key length in bits */
79 size_t ec_keylen; /* size of key in memory */
81 destroy_func *ec_destroy;
82 set_key_func *ec_set_key;
83 random_to_key_func *ec_random_to_key;
84 encrypt_func *ec_encrypt;
85 encrypt_func *ec_decrypt;
86 checksum_func *ec_checksum;
89 struct krb5_key_state {
90 const struct krb5_encryption_class *ks_class;
91 volatile u_int ks_refs;
96 extern struct krb5_encryption_class krb5_des_encryption_class;
97 extern struct krb5_encryption_class krb5_des3_encryption_class;
98 extern struct krb5_encryption_class krb5_aes128_encryption_class;
99 extern struct krb5_encryption_class krb5_aes256_encryption_class;
100 extern struct krb5_encryption_class krb5_arcfour_encryption_class;
101 extern struct krb5_encryption_class krb5_arcfour_56_encryption_class;
104 krb5_set_key(struct krb5_key_state *ks, const void *keydata)
107 ks->ks_class->ec_set_key(ks, keydata);
111 krb5_random_to_key(struct krb5_key_state *ks, const void *keydata)
114 ks->ks_class->ec_random_to_key(ks, keydata);
118 krb5_encrypt(const struct krb5_key_state *ks, struct mbuf *inout,
119 size_t skip, size_t len, void *ivec, size_t ivlen)
122 ks->ks_class->ec_encrypt(ks, inout, skip, len, ivec, ivlen);
126 krb5_decrypt(const struct krb5_key_state *ks, struct mbuf *inout,
127 size_t skip, size_t len, void *ivec, size_t ivlen)
130 ks->ks_class->ec_decrypt(ks, inout, skip, len, ivec, ivlen);
134 krb5_checksum(const struct krb5_key_state *ks, int usage,
135 struct mbuf *inout, size_t skip, size_t inlen, size_t outlen)
138 ks->ks_class->ec_checksum(ks, usage, inout, skip, inlen, outlen);
141 extern struct krb5_encryption_class *
142 krb5_find_encryption_class(int etype);
143 extern struct krb5_key_state *
144 krb5_create_key(const struct krb5_encryption_class *ec);
145 extern void krb5_free_key(struct krb5_key_state *ks);
146 extern struct krb5_key_state *
147 krb5_derive_key(struct krb5_key_state *inkey,
148 void *constant, size_t constantlen);
149 extern struct krb5_key_state *
150 krb5_get_encryption_key(struct krb5_key_state *basekey, int usage);
151 extern struct krb5_key_state *
152 krb5_get_integrity_key(struct krb5_key_state *basekey, int usage);
153 extern struct krb5_key_state *
154 krb5_get_checksum_key(struct krb5_key_state *basekey, int usage);