1/*	$NetBSD: mit_glue.c,v 1.1.1.1 2011/04/13 18:15:36 elric Exp $	*/
2
3/*
4 * Copyright (c) 2003 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#define KRB5_DEPRECATED
37
38#include "krb5_locl.h"
39
40#ifndef HEIMDAL_SMALLER
41
42/*
43 * Glue for MIT API
44 */
45
46KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
47krb5_c_make_checksum(krb5_context context,
48		     krb5_cksumtype cksumtype,
49		     const krb5_keyblock *key,
50		     krb5_keyusage usage,
51		     const krb5_data *input,
52		     krb5_checksum *cksum)
53{
54    krb5_error_code ret;
55    krb5_crypto crypto;
56
57    ret = krb5_crypto_init(context, key, 0, &crypto);
58    if (ret)
59	return ret;
60
61    ret = krb5_create_checksum(context, crypto,  usage, cksumtype,
62			       input->data, input->length, cksum);
63    krb5_crypto_destroy(context, crypto);
64
65    return ret ;
66}
67
68KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
69krb5_c_verify_checksum(krb5_context context, const krb5_keyblock *key,
70		       krb5_keyusage usage, const krb5_data *data,
71		       const krb5_checksum *cksum, krb5_boolean *valid)
72{
73    krb5_error_code ret;
74    krb5_checksum data_cksum;
75
76    *valid = 0;
77
78    ret = krb5_c_make_checksum(context, cksum->cksumtype,
79			       key, usage, data, &data_cksum);
80    if (ret)
81	return ret;
82
83    if (data_cksum.cksumtype == cksum->cksumtype
84	&& krb5_data_ct_cmp(&data_cksum.checksum, &cksum->checksum) == 0)
85	*valid = 1;
86
87    krb5_free_checksum_contents(context, &data_cksum);
88
89    return 0;
90}
91
92KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
93krb5_c_get_checksum(krb5_context context, const krb5_checksum *cksum,
94		    krb5_cksumtype *type, krb5_data **data)
95{
96    krb5_error_code ret;
97
98    if (type)
99	*type = cksum->cksumtype;
100    if (data) {
101	*data = malloc(sizeof(**data));
102	if (*data == NULL)
103	    return ENOMEM;
104
105	ret = der_copy_octet_string(&cksum->checksum, *data);
106	if (ret) {
107	    free(*data);
108	    *data = NULL;
109	    return ret;
110	}
111    }
112    return 0;
113}
114
115KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
116krb5_c_set_checksum(krb5_context context, krb5_checksum *cksum,
117		    krb5_cksumtype type, const krb5_data *data)
118{
119    cksum->cksumtype = type;
120    return der_copy_octet_string(data, &cksum->checksum);
121}
122
123KRB5_LIB_FUNCTION void KRB5_LIB_CALL
124krb5_free_checksum (krb5_context context, krb5_checksum *cksum)
125{
126    krb5_checksum_free(context, cksum);
127    free(cksum);
128}
129
130KRB5_LIB_FUNCTION void KRB5_LIB_CALL
131krb5_free_checksum_contents(krb5_context context, krb5_checksum *cksum)
132{
133    krb5_checksum_free(context, cksum);
134    memset(cksum, 0, sizeof(*cksum));
135}
136
137KRB5_LIB_FUNCTION void KRB5_LIB_CALL
138krb5_checksum_free(krb5_context context, krb5_checksum *cksum)
139{
140    free_Checksum(cksum);
141}
142
143KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
144krb5_c_valid_enctype (krb5_enctype etype)
145{
146    return krb5_enctype_valid(NULL, etype);
147}
148
149KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
150krb5_c_valid_cksumtype(krb5_cksumtype ctype)
151{
152    return krb5_cksumtype_valid(NULL, ctype);
153}
154
155KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
156krb5_c_is_coll_proof_cksum(krb5_cksumtype ctype)
157{
158    return krb5_checksum_is_collision_proof(NULL, ctype);
159}
160
161KRB5_LIB_FUNCTION krb5_boolean KRB5_LIB_CALL
162krb5_c_is_keyed_cksum(krb5_cksumtype ctype)
163{
164    return krb5_checksum_is_keyed(NULL, ctype);
165}
166
167KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
168krb5_copy_checksum (krb5_context context,
169		    const krb5_checksum *old,
170		    krb5_checksum **new)
171{
172    *new = malloc(sizeof(**new));
173    if (*new == NULL)
174	return ENOMEM;
175    return copy_Checksum(old, *new);
176}
177
178KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
179krb5_c_checksum_length (krb5_context context, krb5_cksumtype cksumtype,
180			size_t *length)
181{
182    return krb5_checksumsize(context, cksumtype, length);
183}
184
185KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
186krb5_c_block_size(krb5_context context,
187		  krb5_enctype enctype,
188		  size_t *blocksize)
189{
190    krb5_error_code ret;
191    krb5_crypto crypto;
192    krb5_keyblock key;
193
194    ret = krb5_generate_random_keyblock(context, enctype, &key);
195    if (ret)
196	return ret;
197
198    ret = krb5_crypto_init(context, &key, 0, &crypto);
199    krb5_free_keyblock_contents(context, &key);
200    if (ret)
201	return ret;
202    ret = krb5_crypto_getblocksize(context, crypto, blocksize);
203    krb5_crypto_destroy(context, crypto);
204
205    return ret;
206}
207
208KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
209krb5_c_decrypt(krb5_context context,
210	       const krb5_keyblock key,
211	       krb5_keyusage usage,
212	       const krb5_data *ivec,
213	       krb5_enc_data *input,
214	       krb5_data *output)
215{
216    krb5_error_code ret;
217    krb5_crypto crypto;
218
219    ret = krb5_crypto_init(context, &key, input->enctype, &crypto);
220    if (ret)
221	return ret;
222
223    if (ivec) {
224	size_t blocksize;
225
226	ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
227	if (ret) {
228	krb5_crypto_destroy(context, crypto);
229	return ret;
230	}
231
232	if (blocksize > ivec->length) {
233	    krb5_crypto_destroy(context, crypto);
234	    return KRB5_BAD_MSIZE;
235	}
236    }
237
238    ret = krb5_decrypt_ivec(context, crypto, usage,
239			    input->ciphertext.data, input->ciphertext.length,
240			    output,
241			    ivec ? ivec->data : NULL);
242
243    krb5_crypto_destroy(context, crypto);
244
245    return ret ;
246}
247
248KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
249krb5_c_encrypt(krb5_context context,
250	       const krb5_keyblock *key,
251	       krb5_keyusage usage,
252	       const krb5_data *ivec,
253	       const krb5_data *input,
254	       krb5_enc_data *output)
255{
256    krb5_error_code ret;
257    krb5_crypto crypto;
258
259    ret = krb5_crypto_init(context, key, 0, &crypto);
260    if (ret)
261	return ret;
262
263    if (ivec) {
264	size_t blocksize;
265
266	ret = krb5_crypto_getblocksize(context, crypto, &blocksize);
267	if (ret) {
268	    krb5_crypto_destroy(context, crypto);
269	    return ret;
270	}
271
272	if (blocksize > ivec->length) {
273	    krb5_crypto_destroy(context, crypto);
274	    return KRB5_BAD_MSIZE;
275	}
276    }
277
278    ret = krb5_encrypt_ivec(context, crypto, usage,
279			    input->data, input->length,
280			    &output->ciphertext,
281			    ivec ? ivec->data : NULL);
282    output->kvno = 0;
283    krb5_crypto_getenctype(context, crypto, &output->enctype);
284
285    krb5_crypto_destroy(context, crypto);
286
287    return ret ;
288}
289
290KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
291krb5_c_encrypt_length(krb5_context context,
292		      krb5_enctype enctype,
293		      size_t inputlen,
294		      size_t *length)
295{
296    krb5_error_code ret;
297    krb5_crypto crypto;
298    krb5_keyblock key;
299
300    ret = krb5_generate_random_keyblock(context, enctype, &key);
301    if (ret)
302	return ret;
303
304    ret = krb5_crypto_init(context, &key, 0, &crypto);
305    krb5_free_keyblock_contents(context, &key);
306    if (ret)
307	return ret;
308
309    *length = krb5_get_wrapped_length(context, crypto, inputlen);
310    krb5_crypto_destroy(context, crypto);
311
312    return 0;
313}
314
315/**
316 * Deprecated: keytypes doesn't exists, they are really enctypes.
317 *
318 * @ingroup krb5_deprecated
319 */
320
321KRB5_DEPRECATED
322KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
323krb5_c_enctype_compare(krb5_context context,
324		       krb5_enctype e1,
325		       krb5_enctype e2,
326		       krb5_boolean *similar)
327{
328    *similar = (e1 == e2);
329    return 0;
330}
331
332KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
333krb5_c_make_random_key(krb5_context context,
334		       krb5_enctype enctype,
335		       krb5_keyblock *random_key)
336{
337    return krb5_generate_random_keyblock(context, enctype, random_key);
338}
339
340KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
341krb5_c_keylengths(krb5_context context,
342		  krb5_enctype enctype,
343		  size_t *ilen,
344		  size_t *keylen)
345{
346    krb5_error_code ret;
347
348    ret = krb5_enctype_keybits(context, enctype, ilen);
349    if (ret)
350	return ret;
351    *ilen = (*ilen + 7) / 8;
352    return krb5_enctype_keysize(context, enctype, keylen);
353}
354
355KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
356krb5_c_prf_length(krb5_context context,
357		  krb5_enctype type,
358		  size_t *length)
359{
360    return krb5_crypto_prf_length(context, type, length);
361}
362
363KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
364krb5_c_prf(krb5_context context,
365	   const krb5_keyblock *key,
366	   const krb5_data *input,
367	   krb5_data *output)
368{
369    krb5_crypto crypto;
370    krb5_error_code ret;
371
372    ret = krb5_crypto_init(context, key, 0, &crypto);
373    if (ret)
374	return ret;
375
376    ret = krb5_crypto_prf(context, crypto, input, output);
377    krb5_crypto_destroy(context, crypto);
378
379    return ret;
380}
381
382KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
383krb5_c_random_make_octets(krb5_context context, krb5_data * data)
384{
385    return krb5_generate_random_keyblock(context, data->length, data->data);
386}
387
388/**
389 * MIT compat glue
390 *
391 * @ingroup krb5_ccache
392 */
393
394KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
395krb5_cc_copy_creds(krb5_context context,
396		   const krb5_ccache from,
397		   krb5_ccache to)
398{
399    return krb5_cc_copy_cache(context, from, to);
400}
401
402KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
403krb5_auth_con_getsendsubkey(krb5_context context, krb5_auth_context auth_context,
404                            krb5_keyblock **keyblock)
405{
406    return krb5_auth_con_getlocalsubkey(context, auth_context, keyblock);
407}
408
409KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
410krb5_auth_con_getrecvsubkey(krb5_context context, krb5_auth_context auth_context,
411                            krb5_keyblock **keyblock)
412{
413    return krb5_auth_con_getremotesubkey(context, auth_context, keyblock);
414}
415
416KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
417krb5_auth_con_setsendsubkey(krb5_context context, krb5_auth_context auth_context,
418                            krb5_keyblock *keyblock)
419{
420    return krb5_auth_con_setlocalsubkey(context, auth_context, keyblock);
421}
422
423KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
424krb5_auth_con_setrecvsubkey(krb5_context context, krb5_auth_context auth_context,
425                            krb5_keyblock *keyblock)
426{
427    return krb5_auth_con_setremotesubkey(context, auth_context, keyblock);
428}
429
430KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
431krb5_free_default_realm(krb5_context context, krb5_realm realm)
432{
433    return krb5_xfree(realm);
434}
435
436#endif /* HEIMDAL_SMALLER */
437