2 * Copyright (c) 2003 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * 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 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include "krb5_locl.h"
37 #ifndef HEIMDAL_SMALLER
43 krb5_error_code KRB5_LIB_FUNCTION
44 krb5_c_make_checksum(krb5_context context,
45 krb5_cksumtype cksumtype,
46 const krb5_keyblock *key,
48 const krb5_data *input,
54 ret = krb5_crypto_init(context, key, 0, &crypto);
58 ret = krb5_create_checksum(context, crypto, usage, cksumtype,
59 input->data, input->length, cksum);
60 krb5_crypto_destroy(context, crypto);
65 krb5_error_code KRB5_LIB_FUNCTION
66 krb5_c_verify_checksum(krb5_context context, const krb5_keyblock *key,
67 krb5_keyusage usage, const krb5_data *data,
68 const krb5_checksum *cksum, krb5_boolean *valid)
71 krb5_checksum data_cksum;
75 ret = krb5_c_make_checksum(context, cksum->cksumtype,
76 key, usage, data, &data_cksum);
80 if (data_cksum.cksumtype == cksum->cksumtype
81 && data_cksum.checksum.length == cksum->checksum.length
82 && memcmp(data_cksum.checksum.data, cksum->checksum.data, cksum->checksum.length) == 0)
85 krb5_free_checksum_contents(context, &data_cksum);
90 krb5_error_code KRB5_LIB_FUNCTION
91 krb5_c_get_checksum(krb5_context context, const krb5_checksum *cksum,
92 krb5_cksumtype *type, krb5_data **data)
97 *type = cksum->cksumtype;
99 *data = malloc(sizeof(**data));
103 ret = der_copy_octet_string(&cksum->checksum, *data);
113 krb5_error_code KRB5_LIB_FUNCTION
114 krb5_c_set_checksum(krb5_context context, krb5_checksum *cksum,
115 krb5_cksumtype type, const krb5_data *data)
117 cksum->cksumtype = type;
118 return der_copy_octet_string(data, &cksum->checksum);
121 void KRB5_LIB_FUNCTION
122 krb5_free_checksum (krb5_context context, krb5_checksum *cksum)
124 krb5_checksum_free(context, cksum);
128 void KRB5_LIB_FUNCTION
129 krb5_free_checksum_contents(krb5_context context, krb5_checksum *cksum)
131 krb5_checksum_free(context, cksum);
132 memset(cksum, 0, sizeof(*cksum));
135 void KRB5_LIB_FUNCTION
136 krb5_checksum_free(krb5_context context, krb5_checksum *cksum)
138 free_Checksum(cksum);
141 krb5_boolean KRB5_LIB_FUNCTION
142 krb5_c_valid_enctype (krb5_enctype etype)
144 return krb5_enctype_valid(NULL, etype);
147 krb5_boolean KRB5_LIB_FUNCTION
148 krb5_c_valid_cksumtype(krb5_cksumtype ctype)
150 return krb5_cksumtype_valid(NULL, ctype);
153 krb5_boolean KRB5_LIB_FUNCTION
154 krb5_c_is_coll_proof_cksum(krb5_cksumtype ctype)
156 return krb5_checksum_is_collision_proof(NULL, ctype);
159 krb5_boolean KRB5_LIB_FUNCTION
160 krb5_c_is_keyed_cksum(krb5_cksumtype ctype)
162 return krb5_checksum_is_keyed(NULL, ctype);
165 krb5_error_code KRB5_LIB_FUNCTION
166 krb5_copy_checksum (krb5_context context,
167 const krb5_checksum *old,
170 *new = malloc(sizeof(**new));
173 return copy_Checksum(old, *new);
176 krb5_error_code KRB5_LIB_FUNCTION
177 krb5_c_checksum_length (krb5_context context, krb5_cksumtype cksumtype,
180 return krb5_checksumsize(context, cksumtype, length);
183 krb5_error_code KRB5_LIB_FUNCTION
184 krb5_c_block_size(krb5_context context,
185 krb5_enctype enctype,
192 ret = krb5_generate_random_keyblock(context, enctype, &key);
196 ret = krb5_crypto_init(context, &key, 0, &crypto);
197 krb5_free_keyblock_contents(context, &key);
200 ret = krb5_crypto_getblocksize(context, crypto, blocksize);
201 krb5_crypto_destroy(context, crypto);
206 krb5_error_code KRB5_LIB_FUNCTION
207 krb5_c_decrypt(krb5_context context,
208 const krb5_keyblock key,
210 const krb5_data *ivec,
211 krb5_enc_data *input,
217 ret = krb5_crypto_init(context, &key, input->enctype, &crypto);
224 ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
226 krb5_crypto_destroy(context, crypto);
230 if (blocksize > ivec->length) {
231 krb5_crypto_destroy(context, crypto);
232 return KRB5_BAD_MSIZE;
236 ret = krb5_decrypt_ivec(context, crypto, usage,
237 input->ciphertext.data, input->ciphertext.length,
239 ivec ? ivec->data : NULL);
241 krb5_crypto_destroy(context, crypto);
246 krb5_error_code KRB5_LIB_FUNCTION
247 krb5_c_encrypt(krb5_context context,
248 const krb5_keyblock *key,
250 const krb5_data *ivec,
251 const krb5_data *input,
252 krb5_enc_data *output)
257 ret = krb5_crypto_init(context, key, 0, &crypto);
264 ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
266 krb5_crypto_destroy(context, crypto);
270 if (blocksize > ivec->length) {
271 krb5_crypto_destroy(context, crypto);
272 return KRB5_BAD_MSIZE;
276 ret = krb5_encrypt_ivec(context, crypto, usage,
277 input->data, input->length,
279 ivec ? ivec->data : NULL);
281 krb5_crypto_getenctype(context, crypto, &output->enctype);
283 krb5_crypto_destroy(context, crypto);
288 krb5_error_code KRB5_LIB_FUNCTION
289 krb5_c_encrypt_length(krb5_context context,
290 krb5_enctype enctype,
298 ret = krb5_generate_random_keyblock(context, enctype, &key);
302 ret = krb5_crypto_init(context, &key, 0, &crypto);
303 krb5_free_keyblock_contents(context, &key);
307 *length = krb5_get_wrapped_length(context, crypto, inputlen);
308 krb5_crypto_destroy(context, crypto);
313 krb5_error_code KRB5_LIB_FUNCTION
314 krb5_c_enctype_compare(krb5_context context,
317 krb5_boolean *similar)
319 *similar = krb5_enctypes_compatible_keys(context, e1, e2);
323 krb5_error_code KRB5_LIB_FUNCTION
324 krb5_c_make_random_key(krb5_context context,
325 krb5_enctype enctype,
326 krb5_keyblock *random_key)
328 return krb5_generate_random_keyblock(context, enctype, random_key);
331 krb5_error_code KRB5_LIB_FUNCTION
332 krb5_c_keylengths(krb5_context context,
333 krb5_enctype enctype,
339 ret = krb5_enctype_keybits(context, enctype, ilen);
342 *ilen = (*ilen + 7) / 8;
343 return krb5_enctype_keysize(context, enctype, keylen);
346 krb5_error_code KRB5_LIB_FUNCTION
347 krb5_c_prf_length(krb5_context context,
351 return krb5_crypto_prf_length(context, type, length);
354 krb5_error_code KRB5_LIB_FUNCTION
355 krb5_c_prf(krb5_context context,
356 const krb5_keyblock *key,
357 const krb5_data *input,
363 ret = krb5_crypto_init(context, key, 0, &crypto);
367 ret = krb5_crypto_prf(context, crypto, input, output);
368 krb5_crypto_destroy(context, crypto);
373 #endif /* HEIMDAL_SMALLER */