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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * AEAD: Authenticated Encryption with Associated Data
4 *
5 * This file provides API support for AEAD algorithms.
6 *
7 * Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au>
8 */
9
10#include <crypto/internal/aead.h>
11#include <linux/cryptouser.h>
12#include <linux/errno.h>
13#include <linux/init.h>
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/slab.h>
17#include <linux/seq_file.h>
18#include <linux/string.h>
19#include <net/netlink.h>
20
21#include "internal.h"
22
23static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key,
24 unsigned int keylen)
25{
26 unsigned long alignmask = crypto_aead_alignmask(tfm);
27 int ret;
28 u8 *buffer, *alignbuffer;
29 unsigned long absize;
30
31 absize = keylen + alignmask;
32 buffer = kmalloc(absize, GFP_ATOMIC);
33 if (!buffer)
34 return -ENOMEM;
35
36 alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
37 memcpy(alignbuffer, key, keylen);
38 ret = crypto_aead_alg(tfm)->setkey(tfm, alignbuffer, keylen);
39 kfree_sensitive(buffer);
40 return ret;
41}
42
43int crypto_aead_setkey(struct crypto_aead *tfm,
44 const u8 *key, unsigned int keylen)
45{
46 unsigned long alignmask = crypto_aead_alignmask(tfm);
47 int err;
48
49 if ((unsigned long)key & alignmask)
50 err = setkey_unaligned(tfm, key, keylen);
51 else
52 err = crypto_aead_alg(tfm)->setkey(tfm, key, keylen);
53
54 if (unlikely(err)) {
55 crypto_aead_set_flags(tfm, CRYPTO_TFM_NEED_KEY);
56 return err;
57 }
58
59 crypto_aead_clear_flags(tfm, CRYPTO_TFM_NEED_KEY);
60 return 0;
61}
62EXPORT_SYMBOL_GPL(crypto_aead_setkey);
63
64int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
65{
66 int err;
67
68 if ((!authsize && crypto_aead_maxauthsize(tfm)) ||
69 authsize > crypto_aead_maxauthsize(tfm))
70 return -EINVAL;
71
72 if (crypto_aead_alg(tfm)->setauthsize) {
73 err = crypto_aead_alg(tfm)->setauthsize(tfm, authsize);
74 if (err)
75 return err;
76 }
77
78 tfm->authsize = authsize;
79 return 0;
80}
81EXPORT_SYMBOL_GPL(crypto_aead_setauthsize);
82
83int crypto_aead_encrypt(struct aead_request *req)
84{
85 struct crypto_aead *aead = crypto_aead_reqtfm(req);
86
87 if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
88 return -ENOKEY;
89
90 return crypto_aead_alg(aead)->encrypt(req);
91}
92EXPORT_SYMBOL_GPL(crypto_aead_encrypt);
93
94int crypto_aead_decrypt(struct aead_request *req)
95{
96 struct crypto_aead *aead = crypto_aead_reqtfm(req);
97
98 if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
99 return -ENOKEY;
100
101 if (req->cryptlen < crypto_aead_authsize(aead))
102 return -EINVAL;
103
104 return crypto_aead_alg(aead)->decrypt(req);
105}
106EXPORT_SYMBOL_GPL(crypto_aead_decrypt);
107
108static void crypto_aead_exit_tfm(struct crypto_tfm *tfm)
109{
110 struct crypto_aead *aead = __crypto_aead_cast(tfm);
111 struct aead_alg *alg = crypto_aead_alg(aead);
112
113 alg->exit(aead);
114}
115
116static int crypto_aead_init_tfm(struct crypto_tfm *tfm)
117{
118 struct crypto_aead *aead = __crypto_aead_cast(tfm);
119 struct aead_alg *alg = crypto_aead_alg(aead);
120
121 crypto_aead_set_flags(aead, CRYPTO_TFM_NEED_KEY);
122
123 aead->authsize = alg->maxauthsize;
124
125 if (alg->exit)
126 aead->base.exit = crypto_aead_exit_tfm;
127
128 if (alg->init)
129 return alg->init(aead);
130
131 return 0;
132}
133
134static int __maybe_unused crypto_aead_report(
135 struct sk_buff *skb, struct crypto_alg *alg)
136{
137 struct crypto_report_aead raead;
138 struct aead_alg *aead = container_of(alg, struct aead_alg, base);
139
140 memset(&raead, 0, sizeof(raead));
141
142 strscpy(raead.type, "aead", sizeof(raead.type));
143 strscpy(raead.geniv, "<none>", sizeof(raead.geniv));
144
145 raead.blocksize = alg->cra_blocksize;
146 raead.maxauthsize = aead->maxauthsize;
147 raead.ivsize = aead->ivsize;
148
149 return nla_put(skb, CRYPTOCFGA_REPORT_AEAD, sizeof(raead), &raead);
150}
151
152static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
153 __maybe_unused;
154static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
155{
156 struct aead_alg *aead = container_of(alg, struct aead_alg, base);
157
158 seq_printf(m, "type : aead\n");
159 seq_printf(m, "async : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ?
160 "yes" : "no");
161 seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
162 seq_printf(m, "ivsize : %u\n", aead->ivsize);
163 seq_printf(m, "maxauthsize : %u\n", aead->maxauthsize);
164 seq_printf(m, "geniv : <none>\n");
165}
166
167static void crypto_aead_free_instance(struct crypto_instance *inst)
168{
169 struct aead_instance *aead = aead_instance(inst);
170
171 aead->free(aead);
172}
173
174static const struct crypto_type crypto_aead_type = {
175 .extsize = crypto_alg_extsize,
176 .init_tfm = crypto_aead_init_tfm,
177 .free = crypto_aead_free_instance,
178#ifdef CONFIG_PROC_FS
179 .show = crypto_aead_show,
180#endif
181#if IS_ENABLED(CONFIG_CRYPTO_USER)
182 .report = crypto_aead_report,
183#endif
184 .maskclear = ~CRYPTO_ALG_TYPE_MASK,
185 .maskset = CRYPTO_ALG_TYPE_MASK,
186 .type = CRYPTO_ALG_TYPE_AEAD,
187 .tfmsize = offsetof(struct crypto_aead, base),
188};
189
190int crypto_grab_aead(struct crypto_aead_spawn *spawn,
191 struct crypto_instance *inst,
192 const char *name, u32 type, u32 mask)
193{
194 spawn->base.frontend = &crypto_aead_type;
195 return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
196}
197EXPORT_SYMBOL_GPL(crypto_grab_aead);
198
199struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask)
200{
201 return crypto_alloc_tfm(alg_name, &crypto_aead_type, type, mask);
202}
203EXPORT_SYMBOL_GPL(crypto_alloc_aead);
204
205int crypto_has_aead(const char *alg_name, u32 type, u32 mask)
206{
207 return crypto_type_has_alg(alg_name, &crypto_aead_type, type, mask);
208}
209EXPORT_SYMBOL_GPL(crypto_has_aead);
210
211static int aead_prepare_alg(struct aead_alg *alg)
212{
213 struct crypto_alg *base = &alg->base;
214
215 if (max3(alg->maxauthsize, alg->ivsize, alg->chunksize) >
216 PAGE_SIZE / 8)
217 return -EINVAL;
218
219 if (!alg->chunksize)
220 alg->chunksize = base->cra_blocksize;
221
222 base->cra_type = &crypto_aead_type;
223 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
224 base->cra_flags |= CRYPTO_ALG_TYPE_AEAD;
225
226 return 0;
227}
228
229int crypto_register_aead(struct aead_alg *alg)
230{
231 struct crypto_alg *base = &alg->base;
232 int err;
233
234 err = aead_prepare_alg(alg);
235 if (err)
236 return err;
237
238 return crypto_register_alg(base);
239}
240EXPORT_SYMBOL_GPL(crypto_register_aead);
241
242void crypto_unregister_aead(struct aead_alg *alg)
243{
244 crypto_unregister_alg(&alg->base);
245}
246EXPORT_SYMBOL_GPL(crypto_unregister_aead);
247
248int crypto_register_aeads(struct aead_alg *algs, int count)
249{
250 int i, ret;
251
252 for (i = 0; i < count; i++) {
253 ret = crypto_register_aead(&algs[i]);
254 if (ret)
255 goto err;
256 }
257
258 return 0;
259
260err:
261 for (--i; i >= 0; --i)
262 crypto_unregister_aead(&algs[i]);
263
264 return ret;
265}
266EXPORT_SYMBOL_GPL(crypto_register_aeads);
267
268void crypto_unregister_aeads(struct aead_alg *algs, int count)
269{
270 int i;
271
272 for (i = count - 1; i >= 0; --i)
273 crypto_unregister_aead(&algs[i]);
274}
275EXPORT_SYMBOL_GPL(crypto_unregister_aeads);
276
277int aead_register_instance(struct crypto_template *tmpl,
278 struct aead_instance *inst)
279{
280 int err;
281
282 if (WARN_ON(!inst->free))
283 return -EINVAL;
284
285 err = aead_prepare_alg(&inst->alg);
286 if (err)
287 return err;
288
289 return crypto_register_instance(tmpl, aead_crypto_instance(inst));
290}
291EXPORT_SYMBOL_GPL(aead_register_instance);
292
293MODULE_LICENSE("GPL");
294MODULE_DESCRIPTION("Authenticated Encryption with Associated Data (AEAD)");
1/*
2 * AEAD: Authenticated Encryption with Associated Data
3 *
4 * This file provides API support for AEAD algorithms.
5 *
6 * Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
11 * any later version.
12 *
13 */
14
15#include <crypto/internal/geniv.h>
16#include <crypto/internal/rng.h>
17#include <crypto/null.h>
18#include <crypto/scatterwalk.h>
19#include <linux/err.h>
20#include <linux/init.h>
21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/rtnetlink.h>
24#include <linux/slab.h>
25#include <linux/seq_file.h>
26#include <linux/cryptouser.h>
27#include <net/netlink.h>
28
29#include "internal.h"
30
31static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key,
32 unsigned int keylen)
33{
34 unsigned long alignmask = crypto_aead_alignmask(tfm);
35 int ret;
36 u8 *buffer, *alignbuffer;
37 unsigned long absize;
38
39 absize = keylen + alignmask;
40 buffer = kmalloc(absize, GFP_ATOMIC);
41 if (!buffer)
42 return -ENOMEM;
43
44 alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
45 memcpy(alignbuffer, key, keylen);
46 ret = crypto_aead_alg(tfm)->setkey(tfm, alignbuffer, keylen);
47 memset(alignbuffer, 0, keylen);
48 kfree(buffer);
49 return ret;
50}
51
52int crypto_aead_setkey(struct crypto_aead *tfm,
53 const u8 *key, unsigned int keylen)
54{
55 unsigned long alignmask = crypto_aead_alignmask(tfm);
56
57 if ((unsigned long)key & alignmask)
58 return setkey_unaligned(tfm, key, keylen);
59
60 return crypto_aead_alg(tfm)->setkey(tfm, key, keylen);
61}
62EXPORT_SYMBOL_GPL(crypto_aead_setkey);
63
64int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
65{
66 int err;
67
68 if (authsize > crypto_aead_maxauthsize(tfm))
69 return -EINVAL;
70
71 if (crypto_aead_alg(tfm)->setauthsize) {
72 err = crypto_aead_alg(tfm)->setauthsize(tfm, authsize);
73 if (err)
74 return err;
75 }
76
77 tfm->authsize = authsize;
78 return 0;
79}
80EXPORT_SYMBOL_GPL(crypto_aead_setauthsize);
81
82static void crypto_aead_exit_tfm(struct crypto_tfm *tfm)
83{
84 struct crypto_aead *aead = __crypto_aead_cast(tfm);
85 struct aead_alg *alg = crypto_aead_alg(aead);
86
87 alg->exit(aead);
88}
89
90static int crypto_aead_init_tfm(struct crypto_tfm *tfm)
91{
92 struct crypto_aead *aead = __crypto_aead_cast(tfm);
93 struct aead_alg *alg = crypto_aead_alg(aead);
94
95 aead->authsize = alg->maxauthsize;
96
97 if (alg->exit)
98 aead->base.exit = crypto_aead_exit_tfm;
99
100 if (alg->init)
101 return alg->init(aead);
102
103 return 0;
104}
105
106#ifdef CONFIG_NET
107static int crypto_aead_report(struct sk_buff *skb, struct crypto_alg *alg)
108{
109 struct crypto_report_aead raead;
110 struct aead_alg *aead = container_of(alg, struct aead_alg, base);
111
112 strncpy(raead.type, "aead", sizeof(raead.type));
113 strncpy(raead.geniv, "<none>", sizeof(raead.geniv));
114
115 raead.blocksize = alg->cra_blocksize;
116 raead.maxauthsize = aead->maxauthsize;
117 raead.ivsize = aead->ivsize;
118
119 if (nla_put(skb, CRYPTOCFGA_REPORT_AEAD,
120 sizeof(struct crypto_report_aead), &raead))
121 goto nla_put_failure;
122 return 0;
123
124nla_put_failure:
125 return -EMSGSIZE;
126}
127#else
128static int crypto_aead_report(struct sk_buff *skb, struct crypto_alg *alg)
129{
130 return -ENOSYS;
131}
132#endif
133
134static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
135 __attribute__ ((unused));
136static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
137{
138 struct aead_alg *aead = container_of(alg, struct aead_alg, base);
139
140 seq_printf(m, "type : aead\n");
141 seq_printf(m, "async : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ?
142 "yes" : "no");
143 seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
144 seq_printf(m, "ivsize : %u\n", aead->ivsize);
145 seq_printf(m, "maxauthsize : %u\n", aead->maxauthsize);
146 seq_printf(m, "geniv : <none>\n");
147}
148
149static void crypto_aead_free_instance(struct crypto_instance *inst)
150{
151 struct aead_instance *aead = aead_instance(inst);
152
153 if (!aead->free) {
154 inst->tmpl->free(inst);
155 return;
156 }
157
158 aead->free(aead);
159}
160
161static const struct crypto_type crypto_aead_type = {
162 .extsize = crypto_alg_extsize,
163 .init_tfm = crypto_aead_init_tfm,
164 .free = crypto_aead_free_instance,
165#ifdef CONFIG_PROC_FS
166 .show = crypto_aead_show,
167#endif
168 .report = crypto_aead_report,
169 .maskclear = ~CRYPTO_ALG_TYPE_MASK,
170 .maskset = CRYPTO_ALG_TYPE_MASK,
171 .type = CRYPTO_ALG_TYPE_AEAD,
172 .tfmsize = offsetof(struct crypto_aead, base),
173};
174
175static int aead_geniv_setkey(struct crypto_aead *tfm,
176 const u8 *key, unsigned int keylen)
177{
178 struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm);
179
180 return crypto_aead_setkey(ctx->child, key, keylen);
181}
182
183static int aead_geniv_setauthsize(struct crypto_aead *tfm,
184 unsigned int authsize)
185{
186 struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm);
187
188 return crypto_aead_setauthsize(ctx->child, authsize);
189}
190
191struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl,
192 struct rtattr **tb, u32 type, u32 mask)
193{
194 const char *name;
195 struct crypto_aead_spawn *spawn;
196 struct crypto_attr_type *algt;
197 struct aead_instance *inst;
198 struct aead_alg *alg;
199 unsigned int ivsize;
200 unsigned int maxauthsize;
201 int err;
202
203 algt = crypto_get_attr_type(tb);
204 if (IS_ERR(algt))
205 return ERR_CAST(algt);
206
207 if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
208 return ERR_PTR(-EINVAL);
209
210 name = crypto_attr_alg_name(tb[1]);
211 if (IS_ERR(name))
212 return ERR_CAST(name);
213
214 inst = kzalloc(sizeof(*inst) + sizeof(*spawn), GFP_KERNEL);
215 if (!inst)
216 return ERR_PTR(-ENOMEM);
217
218 spawn = aead_instance_ctx(inst);
219
220 /* Ignore async algorithms if necessary. */
221 mask |= crypto_requires_sync(algt->type, algt->mask);
222
223 crypto_set_aead_spawn(spawn, aead_crypto_instance(inst));
224 err = crypto_grab_aead(spawn, name, type, mask);
225 if (err)
226 goto err_free_inst;
227
228 alg = crypto_spawn_aead_alg(spawn);
229
230 ivsize = crypto_aead_alg_ivsize(alg);
231 maxauthsize = crypto_aead_alg_maxauthsize(alg);
232
233 err = -EINVAL;
234 if (ivsize < sizeof(u64))
235 goto err_drop_alg;
236
237 err = -ENAMETOOLONG;
238 if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME,
239 "%s(%s)", tmpl->name, alg->base.cra_name) >=
240 CRYPTO_MAX_ALG_NAME)
241 goto err_drop_alg;
242 if (snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME,
243 "%s(%s)", tmpl->name, alg->base.cra_driver_name) >=
244 CRYPTO_MAX_ALG_NAME)
245 goto err_drop_alg;
246
247 inst->alg.base.cra_flags = alg->base.cra_flags & CRYPTO_ALG_ASYNC;
248 inst->alg.base.cra_priority = alg->base.cra_priority;
249 inst->alg.base.cra_blocksize = alg->base.cra_blocksize;
250 inst->alg.base.cra_alignmask = alg->base.cra_alignmask;
251 inst->alg.base.cra_ctxsize = sizeof(struct aead_geniv_ctx);
252
253 inst->alg.setkey = aead_geniv_setkey;
254 inst->alg.setauthsize = aead_geniv_setauthsize;
255
256 inst->alg.ivsize = ivsize;
257 inst->alg.maxauthsize = maxauthsize;
258
259out:
260 return inst;
261
262err_drop_alg:
263 crypto_drop_aead(spawn);
264err_free_inst:
265 kfree(inst);
266 inst = ERR_PTR(err);
267 goto out;
268}
269EXPORT_SYMBOL_GPL(aead_geniv_alloc);
270
271void aead_geniv_free(struct aead_instance *inst)
272{
273 crypto_drop_aead(aead_instance_ctx(inst));
274 kfree(inst);
275}
276EXPORT_SYMBOL_GPL(aead_geniv_free);
277
278int aead_init_geniv(struct crypto_aead *aead)
279{
280 struct aead_geniv_ctx *ctx = crypto_aead_ctx(aead);
281 struct aead_instance *inst = aead_alg_instance(aead);
282 struct crypto_aead *child;
283 int err;
284
285 spin_lock_init(&ctx->lock);
286
287 err = crypto_get_default_rng();
288 if (err)
289 goto out;
290
291 err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
292 crypto_aead_ivsize(aead));
293 crypto_put_default_rng();
294 if (err)
295 goto out;
296
297 ctx->sknull = crypto_get_default_null_skcipher2();
298 err = PTR_ERR(ctx->sknull);
299 if (IS_ERR(ctx->sknull))
300 goto out;
301
302 child = crypto_spawn_aead(aead_instance_ctx(inst));
303 err = PTR_ERR(child);
304 if (IS_ERR(child))
305 goto drop_null;
306
307 ctx->child = child;
308 crypto_aead_set_reqsize(aead, crypto_aead_reqsize(child) +
309 sizeof(struct aead_request));
310
311 err = 0;
312
313out:
314 return err;
315
316drop_null:
317 crypto_put_default_null_skcipher2();
318 goto out;
319}
320EXPORT_SYMBOL_GPL(aead_init_geniv);
321
322void aead_exit_geniv(struct crypto_aead *tfm)
323{
324 struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm);
325
326 crypto_free_aead(ctx->child);
327 crypto_put_default_null_skcipher2();
328}
329EXPORT_SYMBOL_GPL(aead_exit_geniv);
330
331int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name,
332 u32 type, u32 mask)
333{
334 spawn->base.frontend = &crypto_aead_type;
335 return crypto_grab_spawn(&spawn->base, name, type, mask);
336}
337EXPORT_SYMBOL_GPL(crypto_grab_aead);
338
339struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask)
340{
341 return crypto_alloc_tfm(alg_name, &crypto_aead_type, type, mask);
342}
343EXPORT_SYMBOL_GPL(crypto_alloc_aead);
344
345static int aead_prepare_alg(struct aead_alg *alg)
346{
347 struct crypto_alg *base = &alg->base;
348
349 if (max3(alg->maxauthsize, alg->ivsize, alg->chunksize) >
350 PAGE_SIZE / 8)
351 return -EINVAL;
352
353 if (!alg->chunksize)
354 alg->chunksize = base->cra_blocksize;
355
356 base->cra_type = &crypto_aead_type;
357 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
358 base->cra_flags |= CRYPTO_ALG_TYPE_AEAD;
359
360 return 0;
361}
362
363int crypto_register_aead(struct aead_alg *alg)
364{
365 struct crypto_alg *base = &alg->base;
366 int err;
367
368 err = aead_prepare_alg(alg);
369 if (err)
370 return err;
371
372 return crypto_register_alg(base);
373}
374EXPORT_SYMBOL_GPL(crypto_register_aead);
375
376void crypto_unregister_aead(struct aead_alg *alg)
377{
378 crypto_unregister_alg(&alg->base);
379}
380EXPORT_SYMBOL_GPL(crypto_unregister_aead);
381
382int crypto_register_aeads(struct aead_alg *algs, int count)
383{
384 int i, ret;
385
386 for (i = 0; i < count; i++) {
387 ret = crypto_register_aead(&algs[i]);
388 if (ret)
389 goto err;
390 }
391
392 return 0;
393
394err:
395 for (--i; i >= 0; --i)
396 crypto_unregister_aead(&algs[i]);
397
398 return ret;
399}
400EXPORT_SYMBOL_GPL(crypto_register_aeads);
401
402void crypto_unregister_aeads(struct aead_alg *algs, int count)
403{
404 int i;
405
406 for (i = count - 1; i >= 0; --i)
407 crypto_unregister_aead(&algs[i]);
408}
409EXPORT_SYMBOL_GPL(crypto_unregister_aeads);
410
411int aead_register_instance(struct crypto_template *tmpl,
412 struct aead_instance *inst)
413{
414 int err;
415
416 err = aead_prepare_alg(&inst->alg);
417 if (err)
418 return err;
419
420 return crypto_register_instance(tmpl, aead_crypto_instance(inst));
421}
422EXPORT_SYMBOL_GPL(aead_register_instance);
423
424MODULE_LICENSE("GPL");
425MODULE_DESCRIPTION("Authenticated Encryption with Associated Data (AEAD)");