2 * Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2001 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: key.c,v 1.8 2007-06-19 23:47:16 tbox Exp $ */
25 #include <isc/region.h>
28 #include <dns/keyvalues.h>
32 #include "dst_internal.h"
35 dst_region_computeid(const isc_region_t *source, unsigned int alg) {
37 const unsigned char *p;
40 REQUIRE(source != NULL);
41 REQUIRE(source->length >= 4);
44 size = source->length;
46 if (alg == DST_ALG_RSAMD5)
47 return ((p[size - 3] << 8) + p[size - 2]);
49 for (ac = 0; size > 1; size -= 2, p += 2)
50 ac += ((*p) << 8) + *(p + 1);
54 ac += (ac >> 16) & 0xffff;
56 return ((isc_uint16_t)(ac & 0xffff));
60 dst_key_name(const dst_key_t *key) {
61 REQUIRE(VALID_KEY(key));
62 return (key->key_name);
66 dst_key_size(const dst_key_t *key) {
67 REQUIRE(VALID_KEY(key));
68 return (key->key_size);
72 dst_key_proto(const dst_key_t *key) {
73 REQUIRE(VALID_KEY(key));
74 return (key->key_proto);
78 dst_key_alg(const dst_key_t *key) {
79 REQUIRE(VALID_KEY(key));
80 return (key->key_alg);
84 dst_key_flags(const dst_key_t *key) {
85 REQUIRE(VALID_KEY(key));
86 return (key->key_flags);
90 dst_key_id(const dst_key_t *key) {
91 REQUIRE(VALID_KEY(key));
96 dst_key_class(const dst_key_t *key) {
97 REQUIRE(VALID_KEY(key));
98 return (key->key_class);
102 dst_key_iszonekey(const dst_key_t *key) {
103 REQUIRE(VALID_KEY(key));
105 if ((key->key_flags & DNS_KEYTYPE_NOAUTH) != 0)
107 if ((key->key_flags & DNS_KEYFLAG_OWNERMASK) != DNS_KEYOWNER_ZONE)
109 if (key->key_proto != DNS_KEYPROTO_DNSSEC &&
110 key->key_proto != DNS_KEYPROTO_ANY)
116 dst_key_isnullkey(const dst_key_t *key) {
117 REQUIRE(VALID_KEY(key));
119 if ((key->key_flags & DNS_KEYFLAG_TYPEMASK) != DNS_KEYTYPE_NOKEY)
121 if ((key->key_flags & DNS_KEYFLAG_OWNERMASK) != DNS_KEYOWNER_ZONE)
123 if (key->key_proto != DNS_KEYPROTO_DNSSEC &&
124 key->key_proto != DNS_KEYPROTO_ANY)
130 dst_key_setbits(dst_key_t *key, isc_uint16_t bits) {
131 unsigned int maxbits;
132 REQUIRE(VALID_KEY(key));
134 RUNTIME_CHECK(dst_key_sigsize(key, &maxbits) == ISC_R_SUCCESS);
136 REQUIRE(bits <= maxbits);
138 key->key_bits = bits;
142 dst_key_getbits(const dst_key_t *key) {
143 REQUIRE(VALID_KEY(key));
144 return (key->key_bits);