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source: vbox/trunk/src/libs/openssl-3.1.2/providers/implementations/ciphers/cipher_aes_ocb.c@ 101021

Last change on this file since 101021 was 101021, checked in by vboxsync, 15 months ago

openssl-3.1.2: Applied and adjusted our OpenSSL changes to 3.1.0. bugref:10519
File size: 19.5 KB
Line 
1/*
2 * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/*
11 * AES low level APIs are deprecated for public use, but still ok for internal
12 * use where we're using them to implement the higher level EVP interface, as is
13 * the case here.
14 */
15#include "internal/deprecated.h"
16
17#include <openssl/proverr.h>
18#include "cipher_aes_ocb.h"
19#include "prov/providercommon.h"
20#include "prov/ciphercommon_aead.h"
21#include "prov/implementations.h"
22
23#define AES_OCB_FLAGS AEAD_FLAGS
24
25#define OCB_DEFAULT_TAG_LEN 16
26#define OCB_DEFAULT_IV_LEN 12
27#define OCB_MIN_IV_LEN 1
28#define OCB_MAX_IV_LEN 15
29
30PROV_CIPHER_FUNC(int, ocb_cipher, (PROV_AES_OCB_CTX *ctx,
31 const unsigned char *in, unsigned char *out,
32 size_t nextblock));
33/* forward declarations */
34static OSSL_FUNC_cipher_encrypt_init_fn aes_ocb_einit;
35static OSSL_FUNC_cipher_decrypt_init_fn aes_ocb_dinit;
36static OSSL_FUNC_cipher_update_fn aes_ocb_block_update;
37static OSSL_FUNC_cipher_final_fn aes_ocb_block_final;
38static OSSL_FUNC_cipher_cipher_fn aes_ocb_cipher;
39static OSSL_FUNC_cipher_freectx_fn aes_ocb_freectx;
40static OSSL_FUNC_cipher_dupctx_fn aes_ocb_dupctx;
41static OSSL_FUNC_cipher_get_ctx_params_fn aes_ocb_get_ctx_params;
42static OSSL_FUNC_cipher_set_ctx_params_fn aes_ocb_set_ctx_params;
43static OSSL_FUNC_cipher_gettable_ctx_params_fn cipher_ocb_gettable_ctx_params;
44static OSSL_FUNC_cipher_settable_ctx_params_fn cipher_ocb_settable_ctx_params;
45
46/*
47 * The following methods could be moved into PROV_AES_OCB_HW if
48 * multiple hardware implementations are ever needed.
49 */
50static ossl_inline int aes_generic_ocb_setiv(PROV_AES_OCB_CTX *ctx,
51 const unsigned char *iv,
52 size_t ivlen, size_t taglen)
53{
54 return (CRYPTO_ocb128_setiv(&ctx->ocb, iv, ivlen, taglen) == 1);
55}
56
57static ossl_inline int aes_generic_ocb_setaad(PROV_AES_OCB_CTX *ctx,
58 const unsigned char *aad,
59 size_t alen)
60{
61 return CRYPTO_ocb128_aad(&ctx->ocb, aad, alen) == 1;
62}
63
64static ossl_inline int aes_generic_ocb_gettag(PROV_AES_OCB_CTX *ctx,
65 unsigned char *tag, size_t tlen)
66{
67 return CRYPTO_ocb128_tag(&ctx->ocb, tag, tlen) > 0;
68}
69
70static ossl_inline int aes_generic_ocb_final(PROV_AES_OCB_CTX *ctx)
71{
72 return (CRYPTO_ocb128_finish(&ctx->ocb, ctx->tag, ctx->taglen) == 0);
73}
74
75static ossl_inline void aes_generic_ocb_cleanup(PROV_AES_OCB_CTX *ctx)
76{
77 CRYPTO_ocb128_cleanup(&ctx->ocb);
78}
79
80static ossl_inline int aes_generic_ocb_cipher(PROV_AES_OCB_CTX *ctx,
81 const unsigned char *in,
82 unsigned char *out, size_t len)
83{
84 if (ctx->base.enc) {
85 if (!CRYPTO_ocb128_encrypt(&ctx->ocb, in, out, len))
86 return 0;
87 } else {
88 if (!CRYPTO_ocb128_decrypt(&ctx->ocb, in, out, len))
89 return 0;
90 }
91 return 1;
92}
93
94static ossl_inline int aes_generic_ocb_copy_ctx(PROV_AES_OCB_CTX *dst,
95 PROV_AES_OCB_CTX *src)
96{
97 return CRYPTO_ocb128_copy_ctx(&dst->ocb, &src->ocb,
98 &dst->ksenc.ks, &dst->ksdec.ks);
99}
100
101/*-
102 * Provider dispatch functions
103 */
104static int aes_ocb_init(void *vctx, const unsigned char *key, size_t keylen,
105 const unsigned char *iv, size_t ivlen,
106 const OSSL_PARAM params[], int enc)
107{
108 PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
109
110 if (!ossl_prov_is_running())
111 return 0;
112
113 ctx->aad_buf_len = 0;
114 ctx->data_buf_len = 0;
115 ctx->base.enc = enc;
116
117 if (iv != NULL) {
118 if (ivlen != ctx->base.ivlen) {
119 /* IV len must be 1 to 15 */
120 if (ivlen < OCB_MIN_IV_LEN || ivlen > OCB_MAX_IV_LEN) {
121 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
122 return 0;
123 }
124 ctx->base.ivlen = ivlen;
125 }
126 if (!ossl_cipher_generic_initiv(&ctx->base, iv, ivlen))
127 return 0;
128 ctx->iv_state = IV_STATE_BUFFERED;
129 }
130 if (key != NULL) {
131 if (keylen != ctx->base.keylen) {
132 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
133 return 0;
134 }
135 if (!ctx->base.hw->init(&ctx->base, key, keylen))
136 return 0;
137 }
138 return aes_ocb_set_ctx_params(ctx, params);
139}
140
141static int aes_ocb_einit(void *vctx, const unsigned char *key, size_t keylen,
142 const unsigned char *iv, size_t ivlen,
143 const OSSL_PARAM params[])
144{
145 return aes_ocb_init(vctx, key, keylen, iv, ivlen, params, 1);
146}
147
148static int aes_ocb_dinit(void *vctx, const unsigned char *key, size_t keylen,
149 const unsigned char *iv, size_t ivlen,
150 const OSSL_PARAM params[])
151{
152 return aes_ocb_init(vctx, key, keylen, iv, ivlen, params, 0);
153}
154
155/*
156 * Because of the way OCB works, both the AAD and data are buffered in the
157 * same way. Only the last block can be a partial block.
158 */
159static int aes_ocb_block_update_internal(PROV_AES_OCB_CTX *ctx,
160 unsigned char *buf, size_t *bufsz,
161 unsigned char *out, size_t *outl,
162 size_t outsize, const unsigned char *in,
163 size_t inl, OSSL_ocb_cipher_fn ciph)
164{
165 size_t nextblocks;
166 size_t outlint = 0;
167
168 if (*bufsz != 0)
169 nextblocks = ossl_cipher_fillblock(buf, bufsz, AES_BLOCK_SIZE, &in, &inl);
170 else
171 nextblocks = inl & ~(AES_BLOCK_SIZE-1);
172
173 if (*bufsz == AES_BLOCK_SIZE) {
174 if (outsize < AES_BLOCK_SIZE) {
175 ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
176 return 0;
177 }
178 if (!ciph(ctx, buf, out, AES_BLOCK_SIZE)) {
179 ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
180 return 0;
181 }
182 *bufsz = 0;
183 outlint = AES_BLOCK_SIZE;
184 if (out != NULL)
185 out += AES_BLOCK_SIZE;
186 }
187 if (nextblocks > 0) {
188 outlint += nextblocks;
189 if (outsize < outlint) {
190 ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
191 return 0;
192 }
193 if (!ciph(ctx, in, out, nextblocks)) {
194 ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
195 return 0;
196 }
197 in += nextblocks;
198 inl -= nextblocks;
199 }
200 if (inl != 0
201 && !ossl_cipher_trailingdata(buf, bufsz, AES_BLOCK_SIZE, &in, &inl)) {
202 /* PROVerr already called */
203 return 0;
204 }
205
206 *outl = outlint;
207 return inl == 0;
208}
209
210/* A wrapper function that has the same signature as cipher */
211static int cipher_updateaad(PROV_AES_OCB_CTX *ctx, const unsigned char *in,
212 unsigned char *out, size_t len)
213{
214 return aes_generic_ocb_setaad(ctx, in, len);
215}
216
217static int update_iv(PROV_AES_OCB_CTX *ctx)
218{
219 if (ctx->iv_state == IV_STATE_FINISHED
220 || ctx->iv_state == IV_STATE_UNINITIALISED)
221 return 0;
222 if (ctx->iv_state == IV_STATE_BUFFERED) {
223 if (!aes_generic_ocb_setiv(ctx, ctx->base.iv, ctx->base.ivlen,
224 ctx->taglen))
225 return 0;
226 ctx->iv_state = IV_STATE_COPIED;
227 }
228 return 1;
229}
230
231static int aes_ocb_block_update(void *vctx, unsigned char *out, size_t *outl,
232 size_t outsize, const unsigned char *in,
233 size_t inl)
234{
235 PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
236 unsigned char *buf;
237 size_t *buflen;
238 OSSL_ocb_cipher_fn fn;
239
240 if (!ctx->key_set || !update_iv(ctx))
241 return 0;
242
243 if (inl == 0) {
244 *outl = 0;
245 return 1;
246 }
247
248 /* Are we dealing with AAD or normal data here? */
249 if (out == NULL) {
250 buf = ctx->aad_buf;
251 buflen = &ctx->aad_buf_len;
252 fn = cipher_updateaad;
253 } else {
254 buf = ctx->data_buf;
255 buflen = &ctx->data_buf_len;
256 fn = aes_generic_ocb_cipher;
257 }
258 return aes_ocb_block_update_internal(ctx, buf, buflen, out, outl, outsize,
259 in, inl, fn);
260}
261
262static int aes_ocb_block_final(void *vctx, unsigned char *out, size_t *outl,
263 size_t outsize)
264{
265 PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
266
267 if (!ossl_prov_is_running())
268 return 0;
269
270 /* If no block_update has run then the iv still needs to be set */
271 if (!ctx->key_set || !update_iv(ctx))
272 return 0;
273
274 /*
275 * Empty the buffer of any partial block that we might have been provided,
276 * both for data and AAD
277 */
278 *outl = 0;
279 if (ctx->data_buf_len > 0) {
280 if (!aes_generic_ocb_cipher(ctx, ctx->data_buf, out, ctx->data_buf_len))
281 return 0;
282 *outl = ctx->data_buf_len;
283 ctx->data_buf_len = 0;
284 }
285 if (ctx->aad_buf_len > 0) {
286 if (!aes_generic_ocb_setaad(ctx, ctx->aad_buf, ctx->aad_buf_len))
287 return 0;
288 ctx->aad_buf_len = 0;
289 }
290 if (ctx->base.enc) {
291 /* If encrypting then just get the tag */
292 if (!aes_generic_ocb_gettag(ctx, ctx->tag, ctx->taglen))
293 return 0;
294 } else {
295 /* If decrypting then verify */
296 if (ctx->taglen == 0)
297 return 0;
298 if (!aes_generic_ocb_final(ctx))
299 return 0;
300 }
301 /* Don't reuse the IV */
302 ctx->iv_state = IV_STATE_FINISHED;
303 return 1;
304}
305
306static void *aes_ocb_newctx(void *provctx, size_t kbits, size_t blkbits,
307 size_t ivbits, unsigned int mode, uint64_t flags)
308{
309 PROV_AES_OCB_CTX *ctx;
310
311 if (!ossl_prov_is_running())
312 return NULL;
313
314 ctx = OPENSSL_zalloc(sizeof(*ctx));
315 if (ctx != NULL) {
316 ossl_cipher_generic_initkey(ctx, kbits, blkbits, ivbits, mode, flags,
317 ossl_prov_cipher_hw_aes_ocb(kbits), NULL);
318 ctx->taglen = OCB_DEFAULT_TAG_LEN;
319 }
320 return ctx;
321}
322
323static void aes_ocb_freectx(void *vctx)
324{
325 PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
326
327 if (ctx != NULL) {
328 aes_generic_ocb_cleanup(ctx);
329 ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
330 OPENSSL_clear_free(ctx, sizeof(*ctx));
331 }
332}
333
334static void *aes_ocb_dupctx(void *vctx)
335{
336 PROV_AES_OCB_CTX *in = (PROV_AES_OCB_CTX *)vctx;
337 PROV_AES_OCB_CTX *ret;
338
339 if (!ossl_prov_is_running())
340 return NULL;
341
342 ret = OPENSSL_malloc(sizeof(*ret));
343 if (ret == NULL) {
344 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
345 return NULL;
346 }
347 *ret = *in;
348 if (!aes_generic_ocb_copy_ctx(ret, in)) {
349 OPENSSL_free(ret);
350 ret = NULL;
351 }
352 return ret;
353}
354
355static int aes_ocb_set_ctx_params(void *vctx, const OSSL_PARAM params[])
356{
357 PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
358 const OSSL_PARAM *p;
359 size_t sz;
360
361 if (params == NULL)
362 return 1;
363
364 p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TAG);
365 if (p != NULL) {
366 if (p->data_type != OSSL_PARAM_OCTET_STRING) {
367 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
368 return 0;
369 }
370 if (p->data == NULL) {
371 /* Tag len must be 0 to 16 */
372 if (p->data_size > OCB_MAX_TAG_LEN)
373 return 0;
374 ctx->taglen = p->data_size;
375 } else {
376 if (p->data_size != ctx->taglen || ctx->base.enc)
377 return 0;
378 memcpy(ctx->tag, p->data, p->data_size);
379 }
380 }
381 p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_IVLEN);
382 if (p != NULL) {
383 if (!OSSL_PARAM_get_size_t(p, &sz)) {
384 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
385 return 0;
386 }
387 /* IV len must be 1 to 15 */
388 if (sz < OCB_MIN_IV_LEN || sz > OCB_MAX_IV_LEN)
389 return 0;
390 ctx->base.ivlen = sz;
391 }
392 p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_KEYLEN);
393 if (p != NULL) {
394 size_t keylen;
395
396 if (!OSSL_PARAM_get_size_t(p, &keylen)) {
397 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
398 return 0;
399 }
400 if (ctx->base.keylen != keylen) {
401 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
402 return 0;
403 }
404 }
405 return 1;
406}
407
408static int aes_ocb_get_ctx_params(void *vctx, OSSL_PARAM params[])
409{
410 PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
411 OSSL_PARAM *p;
412
413 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IVLEN);
414 if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->base.ivlen)) {
415 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
416 return 0;
417 }
418 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_KEYLEN);
419 if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->base.keylen)) {
420 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
421 return 0;
422 }
423 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TAGLEN);
424 if (p != NULL) {
425 if (!OSSL_PARAM_set_size_t(p, ctx->taglen)) {
426 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
427 return 0;
428 }
429 }
430
431 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IV);
432 if (p != NULL) {
433 if (ctx->base.ivlen > p->data_size) {
434 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
435 return 0;
436 }
437 if (!OSSL_PARAM_set_octet_string(p, ctx->base.oiv, ctx->base.ivlen)
438 && !OSSL_PARAM_set_octet_ptr(p, &ctx->base.oiv, ctx->base.ivlen)) {
439 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
440 return 0;
441 }
442 }
443 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_UPDATED_IV);
444 if (p != NULL) {
445 if (ctx->base.ivlen > p->data_size) {
446 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
447 return 0;
448 }
449 if (!OSSL_PARAM_set_octet_string(p, ctx->base.iv, ctx->base.ivlen)
450 && !OSSL_PARAM_set_octet_ptr(p, &ctx->base.iv, ctx->base.ivlen)) {
451 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
452 return 0;
453 }
454 }
455 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TAG);
456 if (p != NULL) {
457 if (p->data_type != OSSL_PARAM_OCTET_STRING) {
458 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
459 return 0;
460 }
461 if (!ctx->base.enc || p->data_size != ctx->taglen) {
462 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_TAG_LENGTH);
463 return 0;
464 }
465 memcpy(p->data, ctx->tag, ctx->taglen);
466 }
467 return 1;
468}
469
470static const OSSL_PARAM cipher_ocb_known_gettable_ctx_params[] = {
471 OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
472 OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
473 OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, NULL),
474 OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_IV, NULL, 0),
475 OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_UPDATED_IV, NULL, 0),
476 OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, NULL, 0),
477 OSSL_PARAM_END
478};
479static const OSSL_PARAM *cipher_ocb_gettable_ctx_params(ossl_unused void *cctx,
480 ossl_unused void *p_ctx)
481{
482 return cipher_ocb_known_gettable_ctx_params;
483}
484
485static const OSSL_PARAM cipher_ocb_known_settable_ctx_params[] = {
486 OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
487 OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_IVLEN, NULL),
488 OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, NULL, 0),
489 OSSL_PARAM_END
490};
491static const OSSL_PARAM *cipher_ocb_settable_ctx_params(ossl_unused void *cctx,
492 ossl_unused void *p_ctx)
493{
494 return cipher_ocb_known_settable_ctx_params;
495}
496
497static int aes_ocb_cipher(void *vctx, unsigned char *out, size_t *outl,
498 size_t outsize, const unsigned char *in, size_t inl)
499{
500 PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
501
502 if (!ossl_prov_is_running())
503 return 0;
504
505 if (outsize < inl) {
506 ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
507 return 0;
508 }
509
510 if (!aes_generic_ocb_cipher(ctx, in, out, inl)) {
511 ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
512 return 0;
513 }
514
515 *outl = inl;
516 return 1;
517}
518
519#define IMPLEMENT_cipher(mode, UCMODE, flags, kbits, blkbits, ivbits) \
520static OSSL_FUNC_cipher_get_params_fn aes_##kbits##_##mode##_get_params; \
521static int aes_##kbits##_##mode##_get_params(OSSL_PARAM params[]) \
522{ \
523 return ossl_cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, \
524 flags, kbits, blkbits, ivbits); \
525} \
526static OSSL_FUNC_cipher_newctx_fn aes_##kbits##_##mode##_newctx; \
527static void *aes_##kbits##_##mode##_newctx(void *provctx) \
528{ \
529 return aes_##mode##_newctx(provctx, kbits, blkbits, ivbits, \
530 EVP_CIPH_##UCMODE##_MODE, flags); \
531} \
532const OSSL_DISPATCH ossl_##aes##kbits##mode##_functions[] = { \
533 { OSSL_FUNC_CIPHER_NEWCTX, \
534 (void (*)(void))aes_##kbits##_##mode##_newctx }, \
535 { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))aes_##mode##_einit }, \
536 { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))aes_##mode##_dinit }, \
537 { OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))aes_##mode##_block_update }, \
538 { OSSL_FUNC_CIPHER_FINAL, (void (*)(void))aes_##mode##_block_final }, \
539 { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))aes_ocb_cipher }, \
540 { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))aes_##mode##_freectx }, \
541 { OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void))aes_##mode##_dupctx }, \
542 { OSSL_FUNC_CIPHER_GET_PARAMS, \
543 (void (*)(void))aes_##kbits##_##mode##_get_params }, \
544 { OSSL_FUNC_CIPHER_GET_CTX_PARAMS, \
545 (void (*)(void))aes_##mode##_get_ctx_params }, \
546 { OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \
547 (void (*)(void))aes_##mode##_set_ctx_params }, \
548 { OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \
549 (void (*)(void))ossl_cipher_generic_gettable_params }, \
550 { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \
551 (void (*)(void))cipher_ocb_gettable_ctx_params }, \
552 { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \
553 (void (*)(void))cipher_ocb_settable_ctx_params }, \
554 { 0, NULL } \
555}
556
557IMPLEMENT_cipher(ocb, OCB, AES_OCB_FLAGS, 256, 128, OCB_DEFAULT_IV_LEN * 8);
558IMPLEMENT_cipher(ocb, OCB, AES_OCB_FLAGS, 192, 128, OCB_DEFAULT_IV_LEN * 8);
559IMPLEMENT_cipher(ocb, OCB, AES_OCB_FLAGS, 128, 128, OCB_DEFAULT_IV_LEN * 8);
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