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DEFINITIONS
This source file includes following definitions.
- krb5_c_make_checksum
- krb5_c_verify_checksum
- krb5_c_get_checksum
- krb5_c_set_checksum
- krb5_free_checksum
- krb5_free_checksum_contents
- krb5_checksum_free
- krb5_c_valid_enctype
- krb5_c_valid_cksumtype
- krb5_c_is_coll_proof_cksum
- krb5_c_is_keyed_cksum
- krb5_copy_checksum
- krb5_c_checksum_length
- krb5_c_block_size
- krb5_c_decrypt
- krb5_c_encrypt
- krb5_c_encrypt_length
- krb5_c_enctype_compare
- krb5_c_make_random_key
- krb5_c_keylengths
- krb5_c_prf_length
- krb5_c_prf
1 /*
2 * Copyright (c) 2003 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
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.
16 *
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.
20 *
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
31 * SUCH DAMAGE.
32 */
33
34 #include "krb5_locl.h"
35 RCSID("$Id$");
36
37 #ifndef HEIMDAL_SMALLER
38
39 /*
40 * Glue for MIT API
41 */
42
43 krb5_error_code KRB5_LIB_FUNCTION
44 krb5_c_make_checksum(krb5_context context,
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45 krb5_cksumtype cksumtype,
46 const krb5_keyblock *key,
47 krb5_keyusage usage,
48 const krb5_data *input,
49 krb5_checksum *cksum)
50 {
51 krb5_error_code ret;
52 krb5_crypto crypto;
53
54 ret = krb5_crypto_init(context, key, 0, &crypto);
55 if (ret)
56 return ret;
57
58 ret = krb5_create_checksum(context, crypto, usage, cksumtype,
59 input->data, input->length, cksum);
60 krb5_crypto_destroy(context, crypto);
61
62 return ret ;
63 }
64
65 krb5_error_code KRB5_LIB_FUNCTION
66 krb5_c_verify_checksum(krb5_context context, const krb5_keyblock *key,
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67 krb5_keyusage usage, const krb5_data *data,
68 const krb5_checksum *cksum, krb5_boolean *valid)
69 {
70 krb5_error_code ret;
71 krb5_checksum data_cksum;
72
73 *valid = 0;
74
75 ret = krb5_c_make_checksum(context, cksum->cksumtype,
76 key, usage, data, &data_cksum);
77 if (ret)
78 return ret;
79
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)
83 *valid = 1;
84
85 krb5_free_checksum_contents(context, &data_cksum);
86
87 return 0;
88 }
89
90 krb5_error_code KRB5_LIB_FUNCTION
91 krb5_c_get_checksum(krb5_context context, const krb5_checksum *cksum,
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92 krb5_cksumtype *type, krb5_data **data)
93 {
94 krb5_error_code ret;
95
96 if (type)
97 *type = cksum->cksumtype;
98 if (data) {
99 *data = malloc(sizeof(**data));
100 if (*data == NULL)
101 return ENOMEM;
102
103 ret = der_copy_octet_string(&cksum->checksum, *data);
104 if (ret) {
105 free(*data);
106 *data = NULL;
107 return ret;
108 }
109 }
110 return 0;
111 }
112
113 krb5_error_code KRB5_LIB_FUNCTION
114 krb5_c_set_checksum(krb5_context context, krb5_checksum *cksum,
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115 krb5_cksumtype type, const krb5_data *data)
116 {
117 cksum->cksumtype = type;
118 return der_copy_octet_string(data, &cksum->checksum);
119 }
120
121 void KRB5_LIB_FUNCTION
122 krb5_free_checksum (krb5_context context, krb5_checksum *cksum)
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123 {
124 krb5_checksum_free(context, cksum);
125 free(cksum);
126 }
127
128 void KRB5_LIB_FUNCTION
129 krb5_free_checksum_contents(krb5_context context, krb5_checksum *cksum)
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130 {
131 krb5_checksum_free(context, cksum);
132 memset(cksum, 0, sizeof(*cksum));
133 }
134
135 void KRB5_LIB_FUNCTION
136 krb5_checksum_free(krb5_context context, krb5_checksum *cksum)
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137 {
138 free_Checksum(cksum);
139 }
140
141 krb5_boolean KRB5_LIB_FUNCTION
142 krb5_c_valid_enctype (krb5_enctype etype)
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143 {
144 return krb5_enctype_valid(NULL, etype);
145 }
146
147 krb5_boolean KRB5_LIB_FUNCTION
148 krb5_c_valid_cksumtype(krb5_cksumtype ctype)
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149 {
150 return krb5_cksumtype_valid(NULL, ctype);
151 }
152
153 krb5_boolean KRB5_LIB_FUNCTION
154 krb5_c_is_coll_proof_cksum(krb5_cksumtype ctype)
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155 {
156 return krb5_checksum_is_collision_proof(NULL, ctype);
157 }
158
159 krb5_boolean KRB5_LIB_FUNCTION
160 krb5_c_is_keyed_cksum(krb5_cksumtype ctype)
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161 {
162 return krb5_checksum_is_keyed(NULL, ctype);
163 }
164
165 krb5_error_code KRB5_LIB_FUNCTION
166 krb5_copy_checksum (krb5_context context,
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167 const krb5_checksum *old,
168 krb5_checksum **new)
169 {
170 *new = malloc(sizeof(**new));
171 if (*new == NULL)
172 return ENOMEM;
173 return copy_Checksum(old, *new);
174 }
175
176 krb5_error_code KRB5_LIB_FUNCTION
177 krb5_c_checksum_length (krb5_context context, krb5_cksumtype cksumtype,
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178 size_t *length)
179 {
180 return krb5_checksumsize(context, cksumtype, length);
181 }
182
183 krb5_error_code KRB5_LIB_FUNCTION
184 krb5_c_block_size(krb5_context context,
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185 krb5_enctype enctype,
186 size_t *blocksize)
187 {
188 krb5_error_code ret;
189 krb5_crypto crypto;
190 krb5_keyblock key;
191
192 ret = krb5_generate_random_keyblock(context, enctype, &key);
193 if (ret)
194 return ret;
195
196 ret = krb5_crypto_init(context, &key, 0, &crypto);
197 krb5_free_keyblock_contents(context, &key);
198 if (ret)
199 return ret;
200 ret = krb5_crypto_getblocksize(context, crypto, blocksize);
201 krb5_crypto_destroy(context, crypto);
202
203 return ret;
204 }
205
206 krb5_error_code KRB5_LIB_FUNCTION
207 krb5_c_decrypt(krb5_context context,
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208 const krb5_keyblock key,
209 krb5_keyusage usage,
210 const krb5_data *ivec,
211 krb5_enc_data *input,
212 krb5_data *output)
213 {
214 krb5_error_code ret;
215 krb5_crypto crypto;
216
217 ret = krb5_crypto_init(context, &key, input->enctype, &crypto);
218 if (ret)
219 return ret;
220
221 if (ivec) {
222 size_t blocksize;
223
224 ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
225 if (ret) {
226 krb5_crypto_destroy(context, crypto);
227 return ret;
228 }
229
230 if (blocksize > ivec->length) {
231 krb5_crypto_destroy(context, crypto);
232 return KRB5_BAD_MSIZE;
233 }
234 }
235
236 ret = krb5_decrypt_ivec(context, crypto, usage,
237 input->ciphertext.data, input->ciphertext.length,
238 output,
239 ivec ? ivec->data : NULL);
240
241 krb5_crypto_destroy(context, crypto);
242
243 return ret ;
244 }
245
246 krb5_error_code KRB5_LIB_FUNCTION
247 krb5_c_encrypt(krb5_context context,
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248 const krb5_keyblock *key,
249 krb5_keyusage usage,
250 const krb5_data *ivec,
251 const krb5_data *input,
252 krb5_enc_data *output)
253 {
254 krb5_error_code ret;
255 krb5_crypto crypto;
256
257 ret = krb5_crypto_init(context, key, 0, &crypto);
258 if (ret)
259 return ret;
260
261 if (ivec) {
262 size_t blocksize;
263
264 ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
265 if (ret) {
266 krb5_crypto_destroy(context, crypto);
267 return ret;
268 }
269
270 if (blocksize > ivec->length) {
271 krb5_crypto_destroy(context, crypto);
272 return KRB5_BAD_MSIZE;
273 }
274 }
275
276 ret = krb5_encrypt_ivec(context, crypto, usage,
277 input->data, input->length,
278 &output->ciphertext,
279 ivec ? ivec->data : NULL);
280 output->kvno = 0;
281 krb5_crypto_getenctype(context, crypto, &output->enctype);
282
283 krb5_crypto_destroy(context, crypto);
284
285 return ret ;
286 }
287
288 krb5_error_code KRB5_LIB_FUNCTION
289 krb5_c_encrypt_length(krb5_context context,
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290 krb5_enctype enctype,
291 size_t inputlen,
292 size_t *length)
293 {
294 krb5_error_code ret;
295 krb5_crypto crypto;
296 krb5_keyblock key;
297
298 ret = krb5_generate_random_keyblock(context, enctype, &key);
299 if (ret)
300 return ret;
301
302 ret = krb5_crypto_init(context, &key, 0, &crypto);
303 krb5_free_keyblock_contents(context, &key);
304 if (ret)
305 return ret;
306
307 *length = krb5_get_wrapped_length(context, crypto, inputlen);
308 krb5_crypto_destroy(context, crypto);
309
310 return 0;
311 }
312
313 krb5_error_code KRB5_LIB_FUNCTION
314 krb5_c_enctype_compare(krb5_context context,
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315 krb5_enctype e1,
316 krb5_enctype e2,
317 krb5_boolean *similar)
318 {
319 *similar = krb5_enctypes_compatible_keys(context, e1, e2);
320 return 0;
321 }
322
323 krb5_error_code KRB5_LIB_FUNCTION
324 krb5_c_make_random_key(krb5_context context,
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325 krb5_enctype enctype,
326 krb5_keyblock *random_key)
327 {
328 return krb5_generate_random_keyblock(context, enctype, random_key);
329 }
330
331 krb5_error_code KRB5_LIB_FUNCTION
332 krb5_c_keylengths(krb5_context context,
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333 krb5_enctype enctype,
334 size_t *ilen,
335 size_t *keylen)
336 {
337 krb5_error_code ret;
338
339 ret = krb5_enctype_keybits(context, enctype, ilen);
340 if (ret)
341 return ret;
342 *ilen = (*ilen + 7) / 8;
343 return krb5_enctype_keysize(context, enctype, keylen);
344 }
345
346 krb5_error_code KRB5_LIB_FUNCTION
347 krb5_c_prf_length(krb5_context context,
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348 krb5_enctype type,
349 size_t *length)
350 {
351 return krb5_crypto_prf_length(context, type, length);
352 }
353
354 krb5_error_code KRB5_LIB_FUNCTION
355 krb5_c_prf(krb5_context context,
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356 const krb5_keyblock *key,
357 const krb5_data *input,
358 krb5_data *output)
359 {
360 krb5_crypto crypto;
361 krb5_error_code ret;
362
363 ret = krb5_crypto_init(context, key, 0, &crypto);
364 if (ret)
365 return ret;
366
367 ret = krb5_crypto_prf(context, crypto, input, output);
368 krb5_crypto_destroy(context, crypto);
369
370 return ret;
371 }
372
373 #endif /* HEIMDAL_SMALLER */