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"
35 RCSID("$Id: mit_glue.c 20042 2007-01-23 20:37:43Z lha $");
41 krb5_error_code KRB5_LIB_FUNCTION
42 krb5_c_make_checksum(krb5_context context,
43 krb5_cksumtype cksumtype,
44 const krb5_keyblock *key,
46 const krb5_data *input,
52 ret = krb5_crypto_init(context, key, 0, &crypto);
56 ret = krb5_create_checksum(context, crypto, usage, cksumtype,
57 input->data, input->length, cksum);
58 krb5_crypto_destroy(context, crypto);
63 krb5_error_code KRB5_LIB_FUNCTION
64 krb5_c_verify_checksum(krb5_context context, const krb5_keyblock *key,
65 krb5_keyusage usage, const krb5_data *data,
66 const krb5_checksum *cksum, krb5_boolean *valid)
69 krb5_checksum data_cksum;
73 ret = krb5_c_make_checksum(context, cksum->cksumtype,
74 key, usage, data, &data_cksum);
78 if (data_cksum.cksumtype == cksum->cksumtype
79 && data_cksum.checksum.length == cksum->checksum.length
80 && memcmp(data_cksum.checksum.data, cksum->checksum.data, cksum->checksum.length) == 0)
83 krb5_free_checksum_contents(context, &data_cksum);
88 krb5_error_code KRB5_LIB_FUNCTION
89 krb5_c_get_checksum(krb5_context context, const krb5_checksum *cksum,
90 krb5_cksumtype *type, krb5_data **data)
95 *type = cksum->cksumtype;
97 *data = malloc(sizeof(**data));
101 ret = der_copy_octet_string(&cksum->checksum, *data);
111 krb5_error_code KRB5_LIB_FUNCTION
112 krb5_c_set_checksum(krb5_context context, krb5_checksum *cksum,
113 krb5_cksumtype type, const krb5_data *data)
115 cksum->cksumtype = type;
116 return der_copy_octet_string(data, &cksum->checksum);
119 void KRB5_LIB_FUNCTION
120 krb5_free_checksum (krb5_context context, krb5_checksum *cksum)
122 krb5_checksum_free(context, cksum);
126 void KRB5_LIB_FUNCTION
127 krb5_free_checksum_contents(krb5_context context, krb5_checksum *cksum)
129 krb5_checksum_free(context, cksum);
130 memset(cksum, 0, sizeof(*cksum));
133 void KRB5_LIB_FUNCTION
134 krb5_checksum_free(krb5_context context, krb5_checksum *cksum)
136 free_Checksum(cksum);
139 krb5_boolean KRB5_LIB_FUNCTION
140 krb5_c_valid_enctype (krb5_enctype etype)
142 return krb5_enctype_valid(NULL, etype);
145 krb5_boolean KRB5_LIB_FUNCTION
146 krb5_c_valid_cksumtype(krb5_cksumtype ctype)
148 return krb5_cksumtype_valid(NULL, ctype);
151 krb5_boolean KRB5_LIB_FUNCTION
152 krb5_c_is_coll_proof_cksum(krb5_cksumtype ctype)
154 return krb5_checksum_is_collision_proof(NULL, ctype);
157 krb5_boolean KRB5_LIB_FUNCTION
158 krb5_c_is_keyed_cksum(krb5_cksumtype ctype)
160 return krb5_checksum_is_keyed(NULL, ctype);
163 krb5_error_code KRB5_LIB_FUNCTION
164 krb5_copy_checksum (krb5_context context,
165 const krb5_checksum *old,
168 *new = malloc(sizeof(**new));
171 return copy_Checksum(old, *new);
174 krb5_error_code KRB5_LIB_FUNCTION
175 krb5_c_checksum_length (krb5_context context, krb5_cksumtype cksumtype,
178 return krb5_checksumsize(context, cksumtype, length);
181 krb5_error_code KRB5_LIB_FUNCTION
182 krb5_c_block_size(krb5_context context,
183 krb5_enctype enctype,
190 ret = krb5_generate_random_keyblock(context, enctype, &key);
194 ret = krb5_crypto_init(context, &key, 0, &crypto);
195 krb5_free_keyblock_contents(context, &key);
198 ret = krb5_crypto_getblocksize(context, crypto, blocksize);
199 krb5_crypto_destroy(context, crypto);
204 krb5_error_code KRB5_LIB_FUNCTION
205 krb5_c_decrypt(krb5_context context,
206 const krb5_keyblock key,
208 const krb5_data *ivec,
209 krb5_enc_data *input,
215 ret = krb5_crypto_init(context, &key, input->enctype, &crypto);
222 ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
224 krb5_crypto_destroy(context, crypto);
228 if (blocksize > ivec->length) {
229 krb5_crypto_destroy(context, crypto);
230 return KRB5_BAD_MSIZE;
234 ret = krb5_decrypt_ivec(context, crypto, usage,
235 input->ciphertext.data, input->ciphertext.length,
237 ivec ? ivec->data : NULL);
239 krb5_crypto_destroy(context, crypto);
244 krb5_error_code KRB5_LIB_FUNCTION
245 krb5_c_encrypt(krb5_context context,
246 const krb5_keyblock *key,
248 const krb5_data *ivec,
249 const krb5_data *input,
250 krb5_enc_data *output)
255 ret = krb5_crypto_init(context, key, 0, &crypto);
262 ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
264 krb5_crypto_destroy(context, crypto);
268 if (blocksize > ivec->length) {
269 krb5_crypto_destroy(context, crypto);
270 return KRB5_BAD_MSIZE;
274 ret = krb5_encrypt_ivec(context, crypto, usage,
275 input->data, input->length,
277 ivec ? ivec->data : NULL);
279 krb5_crypto_getenctype(context, crypto, &output->enctype);
281 krb5_crypto_destroy(context, crypto);
286 krb5_error_code KRB5_LIB_FUNCTION
287 krb5_c_encrypt_length(krb5_context context,
288 krb5_enctype enctype,
296 ret = krb5_generate_random_keyblock(context, enctype, &key);
300 ret = krb5_crypto_init(context, &key, 0, &crypto);
301 krb5_free_keyblock_contents(context, &key);
305 *length = krb5_get_wrapped_length(context, crypto, inputlen);
306 krb5_crypto_destroy(context, crypto);
311 krb5_error_code KRB5_LIB_FUNCTION
312 krb5_c_enctype_compare(krb5_context context,
315 krb5_boolean *similar)
317 *similar = krb5_enctypes_compatible_keys(context, e1, e2);
321 krb5_error_code KRB5_LIB_FUNCTION
322 krb5_c_make_random_key(krb5_context context,
323 krb5_enctype enctype,
324 krb5_keyblock *random_key)
326 return krb5_generate_random_keyblock(context, enctype, random_key);
329 krb5_error_code KRB5_LIB_FUNCTION
330 krb5_c_keylengths(krb5_context context,
331 krb5_enctype enctype,
337 ret = krb5_enctype_keybits(context, enctype, ilen);
340 *ilen = (*ilen + 7) / 8;
341 return krb5_enctype_keysize(context, enctype, keylen);
344 krb5_error_code KRB5_LIB_FUNCTION
345 krb5_c_prf_length(krb5_context context,
349 return krb5_crypto_prf_length(context, type, length);
352 krb5_error_code KRB5_LIB_FUNCTION
353 krb5_c_prf(krb5_context context,
354 const krb5_keyblock *key,
355 const krb5_data *input,
361 ret = krb5_crypto_init(context, key, 0, &crypto);
365 ret = krb5_crypto_prf(context, crypto, input, output);
366 krb5_crypto_destroy(context, crypto);