x86/PCI: truncate _CRS windows with _LEN > _MAX - _MIN + 1
[linux-2.6.git] / arch / s390 / crypto / des_s390.c
1 /*
2  * Cryptographic API.
3  *
4  * s390 implementation of the DES Cipher Algorithm.
5  *
6  * Copyright IBM Corp. 2003,2007
7  * Author(s): Thomas Spatzier
8  *            Jan Glauber (jan.glauber@de.ibm.com)
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  */
16
17 #include <crypto/algapi.h>
18 #include <linux/init.h>
19 #include <linux/module.h>
20
21 #include "crypt_s390.h"
22 #include "crypto_des.h"
23
24 #define DES_BLOCK_SIZE 8
25 #define DES_KEY_SIZE 8
26
27 #define DES3_128_KEY_SIZE       (2 * DES_KEY_SIZE)
28 #define DES3_128_BLOCK_SIZE     DES_BLOCK_SIZE
29
30 #define DES3_192_KEY_SIZE       (3 * DES_KEY_SIZE)
31 #define DES3_192_BLOCK_SIZE     DES_BLOCK_SIZE
32
33 struct crypt_s390_des_ctx {
34         u8 iv[DES_BLOCK_SIZE];
35         u8 key[DES_KEY_SIZE];
36 };
37
38 struct crypt_s390_des3_128_ctx {
39         u8 iv[DES_BLOCK_SIZE];
40         u8 key[DES3_128_KEY_SIZE];
41 };
42
43 struct crypt_s390_des3_192_ctx {
44         u8 iv[DES_BLOCK_SIZE];
45         u8 key[DES3_192_KEY_SIZE];
46 };
47
48 static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
49                       unsigned int keylen)
50 {
51         struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm);
52         u32 *flags = &tfm->crt_flags;
53         int ret;
54
55         /* test if key is valid (not a weak key) */
56         ret = crypto_des_check_key(key, keylen, flags);
57         if (ret == 0)
58                 memcpy(dctx->key, key, keylen);
59         return ret;
60 }
61
62 static void des_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
63 {
64         struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm);
65
66         crypt_s390_km(KM_DEA_ENCRYPT, dctx->key, out, in, DES_BLOCK_SIZE);
67 }
68
69 static void des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
70 {
71         struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm);
72
73         crypt_s390_km(KM_DEA_DECRYPT, dctx->key, out, in, DES_BLOCK_SIZE);
74 }
75
76 static struct crypto_alg des_alg = {
77         .cra_name               =       "des",
78         .cra_driver_name        =       "des-s390",
79         .cra_priority           =       CRYPT_S390_PRIORITY,
80         .cra_flags              =       CRYPTO_ALG_TYPE_CIPHER,
81         .cra_blocksize          =       DES_BLOCK_SIZE,
82         .cra_ctxsize            =       sizeof(struct crypt_s390_des_ctx),
83         .cra_module             =       THIS_MODULE,
84         .cra_list               =       LIST_HEAD_INIT(des_alg.cra_list),
85         .cra_u                  =       {
86                 .cipher = {
87                         .cia_min_keysize        =       DES_KEY_SIZE,
88                         .cia_max_keysize        =       DES_KEY_SIZE,
89                         .cia_setkey             =       des_setkey,
90                         .cia_encrypt            =       des_encrypt,
91                         .cia_decrypt            =       des_decrypt,
92                 }
93         }
94 };
95
96 static int ecb_desall_crypt(struct blkcipher_desc *desc, long func,
97                             void *param, struct blkcipher_walk *walk)
98 {
99         int ret = blkcipher_walk_virt(desc, walk);
100         unsigned int nbytes;
101
102         while ((nbytes = walk->nbytes)) {
103                 /* only use complete blocks */
104                 unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1);
105                 u8 *out = walk->dst.virt.addr;
106                 u8 *in = walk->src.virt.addr;
107
108                 ret = crypt_s390_km(func, param, out, in, n);
109                 BUG_ON((ret < 0) || (ret != n));
110
111                 nbytes &= DES_BLOCK_SIZE - 1;
112                 ret = blkcipher_walk_done(desc, walk, nbytes);
113         }
114
115         return ret;
116 }
117
118 static int cbc_desall_crypt(struct blkcipher_desc *desc, long func,
119                             void *param, struct blkcipher_walk *walk)
120 {
121         int ret = blkcipher_walk_virt(desc, walk);
122         unsigned int nbytes = walk->nbytes;
123
124         if (!nbytes)
125                 goto out;
126
127         memcpy(param, walk->iv, DES_BLOCK_SIZE);
128         do {
129                 /* only use complete blocks */
130                 unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1);
131                 u8 *out = walk->dst.virt.addr;
132                 u8 *in = walk->src.virt.addr;
133
134                 ret = crypt_s390_kmc(func, param, out, in, n);
135                 BUG_ON((ret < 0) || (ret != n));
136
137                 nbytes &= DES_BLOCK_SIZE - 1;
138                 ret = blkcipher_walk_done(desc, walk, nbytes);
139         } while ((nbytes = walk->nbytes));
140         memcpy(walk->iv, param, DES_BLOCK_SIZE);
141
142 out:
143         return ret;
144 }
145
146 static int ecb_des_encrypt(struct blkcipher_desc *desc,
147                            struct scatterlist *dst, struct scatterlist *src,
148                            unsigned int nbytes)
149 {
150         struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
151         struct blkcipher_walk walk;
152
153         blkcipher_walk_init(&walk, dst, src, nbytes);
154         return ecb_desall_crypt(desc, KM_DEA_ENCRYPT, sctx->key, &walk);
155 }
156
157 static int ecb_des_decrypt(struct blkcipher_desc *desc,
158                            struct scatterlist *dst, struct scatterlist *src,
159                            unsigned int nbytes)
160 {
161         struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
162         struct blkcipher_walk walk;
163
164         blkcipher_walk_init(&walk, dst, src, nbytes);
165         return ecb_desall_crypt(desc, KM_DEA_DECRYPT, sctx->key, &walk);
166 }
167
168 static struct crypto_alg ecb_des_alg = {
169         .cra_name               =       "ecb(des)",
170         .cra_driver_name        =       "ecb-des-s390",
171         .cra_priority           =       CRYPT_S390_COMPOSITE_PRIORITY,
172         .cra_flags              =       CRYPTO_ALG_TYPE_BLKCIPHER,
173         .cra_blocksize          =       DES_BLOCK_SIZE,
174         .cra_ctxsize            =       sizeof(struct crypt_s390_des_ctx),
175         .cra_type               =       &crypto_blkcipher_type,
176         .cra_module             =       THIS_MODULE,
177         .cra_list               =       LIST_HEAD_INIT(ecb_des_alg.cra_list),
178         .cra_u                  =       {
179                 .blkcipher = {
180                         .min_keysize            =       DES_KEY_SIZE,
181                         .max_keysize            =       DES_KEY_SIZE,
182                         .setkey                 =       des_setkey,
183                         .encrypt                =       ecb_des_encrypt,
184                         .decrypt                =       ecb_des_decrypt,
185                 }
186         }
187 };
188
189 static int cbc_des_encrypt(struct blkcipher_desc *desc,
190                            struct scatterlist *dst, struct scatterlist *src,
191                            unsigned int nbytes)
192 {
193         struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
194         struct blkcipher_walk walk;
195
196         blkcipher_walk_init(&walk, dst, src, nbytes);
197         return cbc_desall_crypt(desc, KMC_DEA_ENCRYPT, sctx->iv, &walk);
198 }
199
200 static int cbc_des_decrypt(struct blkcipher_desc *desc,
201                            struct scatterlist *dst, struct scatterlist *src,
202                            unsigned int nbytes)
203 {
204         struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
205         struct blkcipher_walk walk;
206
207         blkcipher_walk_init(&walk, dst, src, nbytes);
208         return cbc_desall_crypt(desc, KMC_DEA_DECRYPT, sctx->iv, &walk);
209 }
210
211 static struct crypto_alg cbc_des_alg = {
212         .cra_name               =       "cbc(des)",
213         .cra_driver_name        =       "cbc-des-s390",
214         .cra_priority           =       CRYPT_S390_COMPOSITE_PRIORITY,
215         .cra_flags              =       CRYPTO_ALG_TYPE_BLKCIPHER,
216         .cra_blocksize          =       DES_BLOCK_SIZE,
217         .cra_ctxsize            =       sizeof(struct crypt_s390_des_ctx),
218         .cra_type               =       &crypto_blkcipher_type,
219         .cra_module             =       THIS_MODULE,
220         .cra_list               =       LIST_HEAD_INIT(cbc_des_alg.cra_list),
221         .cra_u                  =       {
222                 .blkcipher = {
223                         .min_keysize            =       DES_KEY_SIZE,
224                         .max_keysize            =       DES_KEY_SIZE,
225                         .ivsize                 =       DES_BLOCK_SIZE,
226                         .setkey                 =       des_setkey,
227                         .encrypt                =       cbc_des_encrypt,
228                         .decrypt                =       cbc_des_decrypt,
229                 }
230         }
231 };
232
233 /*
234  * RFC2451:
235  *
236  *   For DES-EDE3, there is no known need to reject weak or
237  *   complementation keys.  Any weakness is obviated by the use of
238  *   multiple keys.
239  *
240  *   However, if the two  independent 64-bit keys are equal,
241  *   then the DES3 operation is simply the same as DES.
242  *   Implementers MUST reject keys that exhibit this property.
243  *
244  */
245 static int des3_128_setkey(struct crypto_tfm *tfm, const u8 *key,
246                            unsigned int keylen)
247 {
248         int i, ret;
249         struct crypt_s390_des3_128_ctx *dctx = crypto_tfm_ctx(tfm);
250         const u8 *temp_key = key;
251         u32 *flags = &tfm->crt_flags;
252
253         if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE)) &&
254             (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
255                 *flags |= CRYPTO_TFM_RES_WEAK_KEY;
256                 return -EINVAL;
257         }
258         for (i = 0; i < 2; i++, temp_key += DES_KEY_SIZE) {
259                 ret = crypto_des_check_key(temp_key, DES_KEY_SIZE, flags);
260                 if (ret < 0)
261                         return ret;
262         }
263         memcpy(dctx->key, key, keylen);
264         return 0;
265 }
266
267 static void des3_128_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
268 {
269         struct crypt_s390_des3_128_ctx *dctx = crypto_tfm_ctx(tfm);
270
271         crypt_s390_km(KM_TDEA_128_ENCRYPT, dctx->key, dst, (void*)src,
272                       DES3_128_BLOCK_SIZE);
273 }
274
275 static void des3_128_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
276 {
277         struct crypt_s390_des3_128_ctx *dctx = crypto_tfm_ctx(tfm);
278
279         crypt_s390_km(KM_TDEA_128_DECRYPT, dctx->key, dst, (void*)src,
280                       DES3_128_BLOCK_SIZE);
281 }
282
283 static struct crypto_alg des3_128_alg = {
284         .cra_name               =       "des3_ede128",
285         .cra_driver_name        =       "des3_ede128-s390",
286         .cra_priority           =       CRYPT_S390_PRIORITY,
287         .cra_flags              =       CRYPTO_ALG_TYPE_CIPHER,
288         .cra_blocksize          =       DES3_128_BLOCK_SIZE,
289         .cra_ctxsize            =       sizeof(struct crypt_s390_des3_128_ctx),
290         .cra_module             =       THIS_MODULE,
291         .cra_list               =       LIST_HEAD_INIT(des3_128_alg.cra_list),
292         .cra_u                  =       {
293                 .cipher = {
294                         .cia_min_keysize        =       DES3_128_KEY_SIZE,
295                         .cia_max_keysize        =       DES3_128_KEY_SIZE,
296                         .cia_setkey             =       des3_128_setkey,
297                         .cia_encrypt            =       des3_128_encrypt,
298                         .cia_decrypt            =       des3_128_decrypt,
299                 }
300         }
301 };
302
303 static int ecb_des3_128_encrypt(struct blkcipher_desc *desc,
304                                 struct scatterlist *dst,
305                                 struct scatterlist *src, unsigned int nbytes)
306 {
307         struct crypt_s390_des3_128_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
308         struct blkcipher_walk walk;
309
310         blkcipher_walk_init(&walk, dst, src, nbytes);
311         return ecb_desall_crypt(desc, KM_TDEA_128_ENCRYPT, sctx->key, &walk);
312 }
313
314 static int ecb_des3_128_decrypt(struct blkcipher_desc *desc,
315                                 struct scatterlist *dst,
316                                 struct scatterlist *src, unsigned int nbytes)
317 {
318         struct crypt_s390_des3_128_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
319         struct blkcipher_walk walk;
320
321         blkcipher_walk_init(&walk, dst, src, nbytes);
322         return ecb_desall_crypt(desc, KM_TDEA_128_DECRYPT, sctx->key, &walk);
323 }
324
325 static struct crypto_alg ecb_des3_128_alg = {
326         .cra_name               =       "ecb(des3_ede128)",
327         .cra_driver_name        =       "ecb-des3_ede128-s390",
328         .cra_priority           =       CRYPT_S390_COMPOSITE_PRIORITY,
329         .cra_flags              =       CRYPTO_ALG_TYPE_BLKCIPHER,
330         .cra_blocksize          =       DES3_128_BLOCK_SIZE,
331         .cra_ctxsize            =       sizeof(struct crypt_s390_des3_128_ctx),
332         .cra_type               =       &crypto_blkcipher_type,
333         .cra_module             =       THIS_MODULE,
334         .cra_list               =       LIST_HEAD_INIT(
335                                                 ecb_des3_128_alg.cra_list),
336         .cra_u                  =       {
337                 .blkcipher = {
338                         .min_keysize            =       DES3_128_KEY_SIZE,
339                         .max_keysize            =       DES3_128_KEY_SIZE,
340                         .setkey                 =       des3_128_setkey,
341                         .encrypt                =       ecb_des3_128_encrypt,
342                         .decrypt                =       ecb_des3_128_decrypt,
343                 }
344         }
345 };
346
347 static int cbc_des3_128_encrypt(struct blkcipher_desc *desc,
348                                 struct scatterlist *dst,
349                                 struct scatterlist *src, unsigned int nbytes)
350 {
351         struct crypt_s390_des3_128_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
352         struct blkcipher_walk walk;
353
354         blkcipher_walk_init(&walk, dst, src, nbytes);
355         return cbc_desall_crypt(desc, KMC_TDEA_128_ENCRYPT, sctx->iv, &walk);
356 }
357
358 static int cbc_des3_128_decrypt(struct blkcipher_desc *desc,
359                                 struct scatterlist *dst,
360                                 struct scatterlist *src, unsigned int nbytes)
361 {
362         struct crypt_s390_des3_128_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
363         struct blkcipher_walk walk;
364
365         blkcipher_walk_init(&walk, dst, src, nbytes);
366         return cbc_desall_crypt(desc, KMC_TDEA_128_DECRYPT, sctx->iv, &walk);
367 }
368
369 static struct crypto_alg cbc_des3_128_alg = {
370         .cra_name               =       "cbc(des3_ede128)",
371         .cra_driver_name        =       "cbc-des3_ede128-s390",
372         .cra_priority           =       CRYPT_S390_COMPOSITE_PRIORITY,
373         .cra_flags              =       CRYPTO_ALG_TYPE_BLKCIPHER,
374         .cra_blocksize          =       DES3_128_BLOCK_SIZE,
375         .cra_ctxsize            =       sizeof(struct crypt_s390_des3_128_ctx),
376         .cra_type               =       &crypto_blkcipher_type,
377         .cra_module             =       THIS_MODULE,
378         .cra_list               =       LIST_HEAD_INIT(
379                                                 cbc_des3_128_alg.cra_list),
380         .cra_u                  =       {
381                 .blkcipher = {
382                         .min_keysize            =       DES3_128_KEY_SIZE,
383                         .max_keysize            =       DES3_128_KEY_SIZE,
384                         .ivsize                 =       DES3_128_BLOCK_SIZE,
385                         .setkey                 =       des3_128_setkey,
386                         .encrypt                =       cbc_des3_128_encrypt,
387                         .decrypt                =       cbc_des3_128_decrypt,
388                 }
389         }
390 };
391
392 /*
393  * RFC2451:
394  *
395  *   For DES-EDE3, there is no known need to reject weak or
396  *   complementation keys.  Any weakness is obviated by the use of
397  *   multiple keys.
398  *
399  *   However, if the first two or last two independent 64-bit keys are
400  *   equal (k1 == k2 or k2 == k3), then the DES3 operation is simply the
401  *   same as DES.  Implementers MUST reject keys that exhibit this
402  *   property.
403  *
404  */
405 static int des3_192_setkey(struct crypto_tfm *tfm, const u8 *key,
406                            unsigned int keylen)
407 {
408         int i, ret;
409         struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm);
410         const u8 *temp_key = key;
411         u32 *flags = &tfm->crt_flags;
412
413         if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) &&
414             memcmp(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2],
415                    DES_KEY_SIZE)) &&
416             (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
417                 *flags |= CRYPTO_TFM_RES_WEAK_KEY;
418                 return -EINVAL;
419         }
420         for (i = 0; i < 3; i++, temp_key += DES_KEY_SIZE) {
421                 ret = crypto_des_check_key(temp_key, DES_KEY_SIZE, flags);
422                 if (ret < 0)
423                         return ret;
424         }
425         memcpy(dctx->key, key, keylen);
426         return 0;
427 }
428
429 static void des3_192_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
430 {
431         struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm);
432
433         crypt_s390_km(KM_TDEA_192_ENCRYPT, dctx->key, dst, (void*)src,
434                       DES3_192_BLOCK_SIZE);
435 }
436
437 static void des3_192_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
438 {
439         struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm);
440
441         crypt_s390_km(KM_TDEA_192_DECRYPT, dctx->key, dst, (void*)src,
442                       DES3_192_BLOCK_SIZE);
443 }
444
445 static struct crypto_alg des3_192_alg = {
446         .cra_name               =       "des3_ede",
447         .cra_driver_name        =       "des3_ede-s390",
448         .cra_priority           =       CRYPT_S390_PRIORITY,
449         .cra_flags              =       CRYPTO_ALG_TYPE_CIPHER,
450         .cra_blocksize          =       DES3_192_BLOCK_SIZE,
451         .cra_ctxsize            =       sizeof(struct crypt_s390_des3_192_ctx),
452         .cra_module             =       THIS_MODULE,
453         .cra_list               =       LIST_HEAD_INIT(des3_192_alg.cra_list),
454         .cra_u                  =       {
455                 .cipher = {
456                         .cia_min_keysize        =       DES3_192_KEY_SIZE,
457                         .cia_max_keysize        =       DES3_192_KEY_SIZE,
458                         .cia_setkey             =       des3_192_setkey,
459                         .cia_encrypt            =       des3_192_encrypt,
460                         .cia_decrypt            =       des3_192_decrypt,
461                 }
462         }
463 };
464
465 static int ecb_des3_192_encrypt(struct blkcipher_desc *desc,
466                                 struct scatterlist *dst,
467                                 struct scatterlist *src, unsigned int nbytes)
468 {
469         struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
470         struct blkcipher_walk walk;
471
472         blkcipher_walk_init(&walk, dst, src, nbytes);
473         return ecb_desall_crypt(desc, KM_TDEA_192_ENCRYPT, sctx->key, &walk);
474 }
475
476 static int ecb_des3_192_decrypt(struct blkcipher_desc *desc,
477                                 struct scatterlist *dst,
478                                 struct scatterlist *src, unsigned int nbytes)
479 {
480         struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
481         struct blkcipher_walk walk;
482
483         blkcipher_walk_init(&walk, dst, src, nbytes);
484         return ecb_desall_crypt(desc, KM_TDEA_192_DECRYPT, sctx->key, &walk);
485 }
486
487 static struct crypto_alg ecb_des3_192_alg = {
488         .cra_name               =       "ecb(des3_ede)",
489         .cra_driver_name        =       "ecb-des3_ede-s390",
490         .cra_priority           =       CRYPT_S390_COMPOSITE_PRIORITY,
491         .cra_flags              =       CRYPTO_ALG_TYPE_BLKCIPHER,
492         .cra_blocksize          =       DES3_192_BLOCK_SIZE,
493         .cra_ctxsize            =       sizeof(struct crypt_s390_des3_192_ctx),
494         .cra_type               =       &crypto_blkcipher_type,
495         .cra_module             =       THIS_MODULE,
496         .cra_list               =       LIST_HEAD_INIT(
497                                                 ecb_des3_192_alg.cra_list),
498         .cra_u                  =       {
499                 .blkcipher = {
500                         .min_keysize            =       DES3_192_KEY_SIZE,
501                         .max_keysize            =       DES3_192_KEY_SIZE,
502                         .setkey                 =       des3_192_setkey,
503                         .encrypt                =       ecb_des3_192_encrypt,
504                         .decrypt                =       ecb_des3_192_decrypt,
505                 }
506         }
507 };
508
509 static int cbc_des3_192_encrypt(struct blkcipher_desc *desc,
510                                 struct scatterlist *dst,
511                                 struct scatterlist *src, unsigned int nbytes)
512 {
513         struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
514         struct blkcipher_walk walk;
515
516         blkcipher_walk_init(&walk, dst, src, nbytes);
517         return cbc_desall_crypt(desc, KMC_TDEA_192_ENCRYPT, sctx->iv, &walk);
518 }
519
520 static int cbc_des3_192_decrypt(struct blkcipher_desc *desc,
521                                 struct scatterlist *dst,
522                                 struct scatterlist *src, unsigned int nbytes)
523 {
524         struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm);
525         struct blkcipher_walk walk;
526
527         blkcipher_walk_init(&walk, dst, src, nbytes);
528         return cbc_desall_crypt(desc, KMC_TDEA_192_DECRYPT, sctx->iv, &walk);
529 }
530
531 static struct crypto_alg cbc_des3_192_alg = {
532         .cra_name               =       "cbc(des3_ede)",
533         .cra_driver_name        =       "cbc-des3_ede-s390",
534         .cra_priority           =       CRYPT_S390_COMPOSITE_PRIORITY,
535         .cra_flags              =       CRYPTO_ALG_TYPE_BLKCIPHER,
536         .cra_blocksize          =       DES3_192_BLOCK_SIZE,
537         .cra_ctxsize            =       sizeof(struct crypt_s390_des3_192_ctx),
538         .cra_type               =       &crypto_blkcipher_type,
539         .cra_module             =       THIS_MODULE,
540         .cra_list               =       LIST_HEAD_INIT(
541                                                 cbc_des3_192_alg.cra_list),
542         .cra_u                  =       {
543                 .blkcipher = {
544                         .min_keysize            =       DES3_192_KEY_SIZE,
545                         .max_keysize            =       DES3_192_KEY_SIZE,
546                         .ivsize                 =       DES3_192_BLOCK_SIZE,
547                         .setkey                 =       des3_192_setkey,
548                         .encrypt                =       cbc_des3_192_encrypt,
549                         .decrypt                =       cbc_des3_192_decrypt,
550                 }
551         }
552 };
553
554 static int des_s390_init(void)
555 {
556         int ret = 0;
557
558         if (!crypt_s390_func_available(KM_DEA_ENCRYPT) ||
559             !crypt_s390_func_available(KM_TDEA_128_ENCRYPT) ||
560             !crypt_s390_func_available(KM_TDEA_192_ENCRYPT))
561                 return -EOPNOTSUPP;
562
563         ret = crypto_register_alg(&des_alg);
564         if (ret)
565                 goto des_err;
566         ret = crypto_register_alg(&ecb_des_alg);
567         if (ret)
568                 goto ecb_des_err;
569         ret = crypto_register_alg(&cbc_des_alg);
570         if (ret)
571                 goto cbc_des_err;
572
573         ret = crypto_register_alg(&des3_128_alg);
574         if (ret)
575                 goto des3_128_err;
576         ret = crypto_register_alg(&ecb_des3_128_alg);
577         if (ret)
578                 goto ecb_des3_128_err;
579         ret = crypto_register_alg(&cbc_des3_128_alg);
580         if (ret)
581                 goto cbc_des3_128_err;
582
583         ret = crypto_register_alg(&des3_192_alg);
584         if (ret)
585                 goto des3_192_err;
586         ret = crypto_register_alg(&ecb_des3_192_alg);
587         if (ret)
588                 goto ecb_des3_192_err;
589         ret = crypto_register_alg(&cbc_des3_192_alg);
590         if (ret)
591                 goto cbc_des3_192_err;
592
593 out:
594         return ret;
595
596 cbc_des3_192_err:
597         crypto_unregister_alg(&ecb_des3_192_alg);
598 ecb_des3_192_err:
599         crypto_unregister_alg(&des3_192_alg);
600 des3_192_err:
601         crypto_unregister_alg(&cbc_des3_128_alg);
602 cbc_des3_128_err:
603         crypto_unregister_alg(&ecb_des3_128_alg);
604 ecb_des3_128_err:
605         crypto_unregister_alg(&des3_128_alg);
606 des3_128_err:
607         crypto_unregister_alg(&cbc_des_alg);
608 cbc_des_err:
609         crypto_unregister_alg(&ecb_des_alg);
610 ecb_des_err:
611         crypto_unregister_alg(&des_alg);
612 des_err:
613         goto out;
614 }
615
616 static void __exit des_s390_fini(void)
617 {
618         crypto_unregister_alg(&cbc_des3_192_alg);
619         crypto_unregister_alg(&ecb_des3_192_alg);
620         crypto_unregister_alg(&des3_192_alg);
621         crypto_unregister_alg(&cbc_des3_128_alg);
622         crypto_unregister_alg(&ecb_des3_128_alg);
623         crypto_unregister_alg(&des3_128_alg);
624         crypto_unregister_alg(&cbc_des_alg);
625         crypto_unregister_alg(&ecb_des_alg);
626         crypto_unregister_alg(&des_alg);
627 }
628
629 module_init(des_s390_init);
630 module_exit(des_s390_fini);
631
632 MODULE_ALIAS("des");
633 MODULE_ALIAS("des3_ede");
634
635 MODULE_LICENSE("GPL");
636 MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms");