x942kdf.c@ 94552

Last change on this file since 94552 was 94320, checked in by vboxsync, 3 years ago
libs/openssl-3.0.1: Export to OSE and fix copyright headers in Makefiles, bugref:10128
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1	/*
2	* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
3	* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
4	*
5	* Licensed under the Apache License 2.0 (the "License"). You may not use
6	* this file except in compliance with the License. You can obtain a copy
7	* in the file LICENSE in the source distribution or at
8	* https://www.openssl.org/source/license.html
9	*/
10
11	#include "e_os.h"
12	#include <openssl/core_names.h>
13	#include <openssl/core_dispatch.h>
14	#include <openssl/err.h>
15	#include <openssl/evp.h>
16	#include <openssl/params.h>
17	#include <openssl/proverr.h>
18	#include "internal/packet.h"
19	#include "internal/der.h"
20	#include "prov/provider_ctx.h"
21	#include "prov/providercommon.h"
22	#include "prov/implementations.h"
23	#include "prov/provider_util.h"
24	#include "prov/der_wrap.h"
25
26	#define X942KDF_MAX_INLEN (1 << 30)
27
28	static OSSL_FUNC_kdf_newctx_fn x942kdf_new;
29	static OSSL_FUNC_kdf_freectx_fn x942kdf_free;
30	static OSSL_FUNC_kdf_reset_fn x942kdf_reset;
31	static OSSL_FUNC_kdf_derive_fn x942kdf_derive;
32	static OSSL_FUNC_kdf_settable_ctx_params_fn x942kdf_settable_ctx_params;
33	static OSSL_FUNC_kdf_set_ctx_params_fn x942kdf_set_ctx_params;
34	static OSSL_FUNC_kdf_gettable_ctx_params_fn x942kdf_gettable_ctx_params;
35	static OSSL_FUNC_kdf_get_ctx_params_fn x942kdf_get_ctx_params;
36
37	typedef struct {
38	void *provctx;
39	PROV_DIGEST digest;
40	unsigned char *secret;
41	size_t secret_len;
42	unsigned char *acvpinfo;
43	size_t acvpinfo_len;
44	unsigned char partyuinfo, partyvinfo, supp_pubinfo, supp_privinfo;
45	size_t partyuinfo_len, partyvinfo_len, supp_pubinfo_len, supp_privinfo_len;
46	size_t dkm_len;
47	const unsigned char *cek_oid;
48	size_t cek_oid_len;
49	int use_keybits;
50	} KDF_X942;
51
52	/*
53	* A table of allowed wrapping algorithms, oids and the associated output
54	* lengths.
55	* NOTE: RC2wrap and camellia128_wrap have been removed as there are no
56	* corresponding ciphers for these operations.
57	*/
58	static const struct {
59	const char *name;
60	const unsigned char *oid;
61	size_t oid_len;
62	size_t keklen; /* size in bytes */
63	} kek_algs[] = {
64	{ "AES-128-WRAP", ossl_der_oid_id_aes128_wrap, DER_OID_SZ_id_aes128_wrap,
65	16 },
66	{ "AES-192-WRAP", ossl_der_oid_id_aes192_wrap, DER_OID_SZ_id_aes192_wrap,
67	24 },
68	{ "AES-256-WRAP", ossl_der_oid_id_aes256_wrap, DER_OID_SZ_id_aes256_wrap,
69	32 },
70	#ifndef FIPS_MODULE
71	{ "DES3-WRAP", ossl_der_oid_id_alg_CMS3DESwrap,
72	DER_OID_SZ_id_alg_CMS3DESwrap, 24 },
73	#endif
74	};
75
76	static int find_alg_id(OSSL_LIB_CTX libctx, const char algname,
77	const char propq, size_t id)
78	{
79	int ret = 1;
80	size_t i;
81	EVP_CIPHER *cipher;
82
83	cipher = EVP_CIPHER_fetch(libctx, algname, propq);
84	if (cipher != NULL) {
85	for (i = 0; i < OSSL_NELEM(kek_algs); i++) {
86	if (EVP_CIPHER_is_a(cipher, kek_algs[i].name)) {
87	*id = i;
88	goto end;
89	}
90	}
91	}
92	ret = 0;
93	ERR_raise(ERR_LIB_PROV, PROV_R_UNSUPPORTED_CEK_ALG);
94	end:
95	EVP_CIPHER_free(cipher);
96	return ret;
97	}
98
99	static int DER_w_keyinfo(WPACKET *pkt,
100	const unsigned char *der_oid, size_t der_oidlen,
101	unsigned char **pcounter)
102	{
103	return ossl_DER_w_begin_sequence(pkt, -1)
104	/* Store the initial value of 1 into the counter */
105	&& ossl_DER_w_octet_string_uint32(pkt, -1, 1)
106	/* Remember where we stored the counter in the buffer */
107	&& (pcounter == NULL
108	\|\| (*pcounter = WPACKET_get_curr(pkt)) != NULL)
109	&& ossl_DER_w_precompiled(pkt, -1, der_oid, der_oidlen)
110	&& ossl_DER_w_end_sequence(pkt, -1);
111	}
112
113	static int der_encode_sharedinfo(WPACKET pkt, unsigned char buf, size_t buflen,
114	const unsigned char *der_oid, size_t der_oidlen,
115	const unsigned char *acvp, size_t acvplen,
116	const unsigned char *partyu, size_t partyulen,
117	const unsigned char *partyv, size_t partyvlen,
118	const unsigned char *supp_pub, size_t supp_publen,
119	const unsigned char *supp_priv, size_t supp_privlen,
120	uint32_t keylen_bits, unsigned char **pcounter)
121	{
122	return (buf != NULL ? WPACKET_init_der(pkt, buf, buflen) :
123	WPACKET_init_null_der(pkt))
124	&& ossl_DER_w_begin_sequence(pkt, -1)
125	&& (supp_priv == NULL
126	\|\| ossl_DER_w_octet_string(pkt, 3, supp_priv, supp_privlen))
127	&& (supp_pub == NULL
128	\|\| ossl_DER_w_octet_string(pkt, 2, supp_pub, supp_publen))
129	&& (keylen_bits == 0
130	\|\| ossl_DER_w_octet_string_uint32(pkt, 2, keylen_bits))
131	&& (partyv == NULL \|\| ossl_DER_w_octet_string(pkt, 1, partyv, partyvlen))
132	&& (partyu == NULL \|\| ossl_DER_w_octet_string(pkt, 0, partyu, partyulen))
133	&& (acvp == NULL \|\| ossl_DER_w_precompiled(pkt, -1, acvp, acvplen))
134	&& DER_w_keyinfo(pkt, der_oid, der_oidlen, pcounter)
135	&& ossl_DER_w_end_sequence(pkt, -1)
136	&& WPACKET_finish(pkt);
137	}
138
139	/*
140	* Encode the other info structure.
141	*
142	* The ANS X9.42-2003 standard uses OtherInfo:
143	*
144	* OtherInfo ::= SEQUENCE {
145	* keyInfo KeySpecificInfo,
146	* partyUInfo [0] OCTET STRING OPTIONAL,
147	* partyVInfo [1] OCTET STRING OPTIONAL,
148	* suppPubInfo [2] OCTET STRING OPTIONAL,
149	* suppPrivInfo [3] OCTET STRING OPTIONAL
150	* }
151	*
152	* KeySpecificInfo ::= SEQUENCE {
153	* algorithm OBJECT IDENTIFIER,
154	* counter OCTET STRING SIZE (4..4)
155	* }
156	*
157	* RFC2631 Section 2.1.2 Contains the following definition for OtherInfo
158	*
159	* OtherInfo ::= SEQUENCE {
160	* keyInfo KeySpecificInfo,
161	* partyAInfo [0] OCTET STRING OPTIONAL,
162	* suppPubInfo [2] OCTET STRING
163	* }
164	* Where suppPubInfo is the key length (in bits) (stored into 4 bytes)
165	*
166	* \|keylen\| is the length (in bytes) of the generated KEK. It is stored into
167	* suppPubInfo (in bits). It is ignored if the value is 0.
168	* \|cek_oid\| The oid of the key wrapping algorithm.
169	* \|cek_oidlen\| The length (in bytes) of the key wrapping algorithm oid,
170	* \|acvp\| is the optional blob of DER data representing one or more of the
171	* OtherInfo fields related to \|partyu\|, \|partyv\|, \|supp_pub\| and \|supp_priv\|.
172	* This field should noramlly be NULL. If \|acvp\| is non NULL then \|partyu\|,
173	* \|partyv\|, \|supp_pub\| and \|supp_priv\| should all be NULL.
174	* \|acvp_len\| is the \|acvp\| length (in bytes).
175	* \|partyu\| is the optional public info contributed by the initiator.
176	* It can be NULL. (It is also used as the ukm by CMS).
177	* \|partyu_len\| is the \|partyu\| length (in bytes).
178	* \|partyv\| is the optional public info contributed by the responder.
179	* It can be NULL.
180	* \|partyv_len\| is the \|partyv\| length (in bytes).
181	* \|supp_pub\| is the optional additional, mutually-known public information.
182	* It can be NULL. \|keylen\| should be 0 if this is not NULL.
183	* \|supp_pub_len\| is the \|supp_pub\| length (in bytes).
184	* \|supp_priv\| is the optional additional, mutually-known private information.
185	* It can be NULL.
186	* \|supp_priv_len\| is the \|supp_priv\| length (in bytes).
187	* \|der\| is the returned encoded data. It must be freed by the caller.
188	* \|der_len\| is the returned size of the encoded data.
189	* \|out_ctr\| returns a pointer to the counter data which is embedded inside the
190	* encoded data. This allows the counter bytes to be updated without
191	* re-encoding.
192	*
193	* Returns: 1 if successfully encoded, or 0 otherwise.
194	* Assumptions: \|der\|, \|der_len\| & \|out_ctr\| are not NULL.
195	*/
196	static int
197	x942_encode_otherinfo(size_t keylen,
198	const unsigned char *cek_oid, size_t cek_oid_len,
199	const unsigned char *acvp, size_t acvp_len,
200	const unsigned char *partyu, size_t partyu_len,
201	const unsigned char *partyv, size_t partyv_len,
202	const unsigned char *supp_pub, size_t supp_pub_len,
203	const unsigned char *supp_priv, size_t supp_priv_len,
204	unsigned char *der, size_t der_len,
205	unsigned char **out_ctr)
206	{
207	int ret = 0;
208	unsigned char pcounter = NULL, der_buf = NULL;
209	size_t der_buflen = 0;
210	WPACKET pkt;
211	uint32_t keylen_bits;
212
213	/* keylenbits must fit into 4 bytes */
214	if (keylen > 0xFFFFFF)
215	return 0;
216	keylen_bits = 8 * keylen;
217
218	/* Calculate the size of the buffer */
219	if (!der_encode_sharedinfo(&pkt, NULL, 0, cek_oid, cek_oid_len,
220	acvp, acvp_len,
221	partyu, partyu_len, partyv, partyv_len,
222	supp_pub, supp_pub_len, supp_priv, supp_priv_len,
223	keylen_bits, NULL)
224	\|\| !WPACKET_get_total_written(&pkt, &der_buflen))
225	goto err;
226	WPACKET_cleanup(&pkt);
227	/* Alloc the buffer */
228	der_buf = OPENSSL_zalloc(der_buflen);
229	if (der_buf == NULL)
230	goto err;
231	/* Encode into the buffer */
232	if (!der_encode_sharedinfo(&pkt, der_buf, der_buflen, cek_oid, cek_oid_len,
233	acvp, acvp_len,
234	partyu, partyu_len, partyv, partyv_len,
235	supp_pub, supp_pub_len, supp_priv, supp_priv_len,
236	keylen_bits, &pcounter))
237	goto err;
238	/*
239	* Since we allocated the exact size required, the buffer should point to the
240	* start of the alllocated buffer at this point.
241	*/
242	if (WPACKET_get_curr(&pkt) != der_buf)
243	goto err;
244
245	/*
246	* The data for the DER encoded octet string of a 32 bit counter = 1
247	* should be 04 04 00 00 00 01
248	* So just check the header is correct and skip over it.
249	* This counter will be incremented in the kdf update loop.
250	*/
251	if (pcounter == NULL
252	\|\| pcounter[0] != 0x04
253	\|\| pcounter[1] != 0x04)
254	goto err;
255	*out_ctr = (pcounter + 2);
256	*der = der_buf;
257	*der_len = der_buflen;
258	ret = 1;
259	err:
260	WPACKET_cleanup(&pkt);
261	return ret;
262	}
263
264	static int x942kdf_hash_kdm(const EVP_MD *kdf_md,
265	const unsigned char *z, size_t z_len,
266	const unsigned char *other, size_t other_len,
267	unsigned char *ctr,
268	unsigned char *derived_key, size_t derived_key_len)
269	{
270	int ret = 0, hlen;
271	size_t counter, out_len, len = derived_key_len;
272	unsigned char mac[EVP_MAX_MD_SIZE];
273	unsigned char *out = derived_key;
274	EVP_MD_CTX ctx = NULL, ctx_init = NULL;
275
276	if (z_len > X942KDF_MAX_INLEN
277	\|\| other_len > X942KDF_MAX_INLEN
278	\|\| derived_key_len > X942KDF_MAX_INLEN
279	\|\| derived_key_len == 0) {
280	ERR_raise(ERR_LIB_PROV, PROV_R_BAD_LENGTH);
281	return 0;
282	}
283
284	hlen = EVP_MD_get_size(kdf_md);
285	if (hlen <= 0)
286	return 0;
287	out_len = (size_t)hlen;
288
289	ctx = EVP_MD_CTX_create();
290	ctx_init = EVP_MD_CTX_create();
291	if (ctx == NULL \|\| ctx_init == NULL)
292	goto end;
293
294	if (!EVP_DigestInit(ctx_init, kdf_md))
295	goto end;
296
297	for (counter = 1;; counter++) {
298	/* updating the ctr modifies 4 bytes in the 'other' buffer */
299	ctr[0] = (unsigned char)((counter >> 24) & 0xff);
300	ctr[1] = (unsigned char)((counter >> 16) & 0xff);
301	ctr[2] = (unsigned char)((counter >> 8) & 0xff);
302	ctr[3] = (unsigned char)(counter & 0xff);
303
304	if (!EVP_MD_CTX_copy_ex(ctx, ctx_init)
305	\|\| !EVP_DigestUpdate(ctx, z, z_len)
306	\|\| !EVP_DigestUpdate(ctx, other, other_len))
307	goto end;
308	if (len >= out_len) {
309	if (!EVP_DigestFinal_ex(ctx, out, NULL))
310	goto end;
311	out += out_len;
312	len -= out_len;
313	if (len == 0)
314	break;
315	} else {
316	if (!EVP_DigestFinal_ex(ctx, mac, NULL))
317	goto end;
318	memcpy(out, mac, len);
319	break;
320	}
321	}
322	ret = 1;
323	end:
324	EVP_MD_CTX_free(ctx);
325	EVP_MD_CTX_free(ctx_init);
326	OPENSSL_cleanse(mac, sizeof(mac));
327	return ret;
328	}
329
330	static void x942kdf_new(void provctx)
331	{
332	KDF_X942 *ctx;
333
334	if (!ossl_prov_is_running())
335	return 0;
336
337	if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL)
338	ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
339	ctx->provctx = provctx;
340	ctx->use_keybits = 1;
341	return ctx;
342	}
343
344	static void x942kdf_reset(void *vctx)
345	{
346	KDF_X942 ctx = (KDF_X942 )vctx;
347	void *provctx = ctx->provctx;
348
349	ossl_prov_digest_reset(&ctx->digest);
350	OPENSSL_clear_free(ctx->secret, ctx->secret_len);
351	OPENSSL_clear_free(ctx->acvpinfo, ctx->acvpinfo_len);
352	OPENSSL_clear_free(ctx->partyuinfo, ctx->partyuinfo_len);
353	OPENSSL_clear_free(ctx->partyvinfo, ctx->partyvinfo_len);
354	OPENSSL_clear_free(ctx->supp_pubinfo, ctx->supp_pubinfo_len);
355	OPENSSL_clear_free(ctx->supp_privinfo, ctx->supp_privinfo_len);
356	memset(ctx, 0, sizeof(*ctx));
357	ctx->provctx = provctx;
358	ctx->use_keybits = 1;
359	}
360
361	static void x942kdf_free(void *vctx)
362	{
363	KDF_X942 ctx = (KDF_X942 )vctx;
364
365	if (ctx != NULL) {
366	x942kdf_reset(ctx);
367	OPENSSL_free(ctx);
368	}
369	}
370
371	static int x942kdf_set_buffer(unsigned char *out, size_t out_len,
372	const OSSL_PARAM *p)
373	{
374	if (p->data_size == 0 \|\| p->data == NULL)
375	return 1;
376
377	OPENSSL_free(*out);
378	*out = NULL;
379	return OSSL_PARAM_get_octet_string(p, (void **)out, 0, out_len);
380	}
381
382	static size_t x942kdf_size(KDF_X942 *ctx)
383	{
384	int len;
385	const EVP_MD *md = ossl_prov_digest_md(&ctx->digest);
386
387	if (md == NULL) {
388	ERR_raise(ERR_LIB_PROV, PROV_R_MISSING_MESSAGE_DIGEST);
389	return 0;
390	}
391	len = EVP_MD_get_size(md);
392	return (len <= 0) ? 0 : (size_t)len;
393	}
394
395	static int x942kdf_derive(void vctx, unsigned char key, size_t keylen,
396	const OSSL_PARAM params[])
397	{
398	KDF_X942 ctx = (KDF_X942 )vctx;
399	const EVP_MD *md;
400	int ret = 0;
401	unsigned char *ctr;
402	unsigned char *der = NULL;
403	size_t der_len = 0;
404
405	if (!ossl_prov_is_running() \|\| !x942kdf_set_ctx_params(ctx, params))
406	return 0;
407
408	/*
409	* These 2 options encode to the same field so only one of them should be
410	* active at once.
411	*/
412	if (ctx->use_keybits && ctx->supp_pubinfo != NULL) {
413	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_PUBINFO);
414	return 0;
415	}
416	/*
417	* If the blob of acvp data is used then the individual info fields that it
418	* replaces should not also be defined.
419	*/
420	if (ctx->acvpinfo != NULL
421	&& (ctx->partyuinfo != NULL
422	\|\| ctx->partyvinfo != NULL
423	\|\| ctx->supp_pubinfo != NULL
424	\|\| ctx->supp_privinfo != NULL)) {
425	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DATA);
426	return 0;
427	}
428	if (ctx->secret == NULL) {
429	ERR_raise(ERR_LIB_PROV, PROV_R_MISSING_SECRET);
430	return 0;
431	}
432	md = ossl_prov_digest_md(&ctx->digest);
433	if (md == NULL) {
434	ERR_raise(ERR_LIB_PROV, PROV_R_MISSING_MESSAGE_DIGEST);
435	return 0;
436	}
437	if (ctx->cek_oid == NULL \|\| ctx->cek_oid_len == 0) {
438	ERR_raise(ERR_LIB_PROV, PROV_R_MISSING_CEK_ALG);
439	return 0;
440	}
441	if (ctx->partyuinfo != NULL && ctx->partyuinfo_len >= X942KDF_MAX_INLEN) {
442	/*
443	* Note the ukm length MUST be 512 bits if it is used.
444	* For backwards compatibility the old check is being done.
445	*/
446	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_UKM_LENGTH);
447	return 0;
448	}
449	/* generate the otherinfo der */
450	if (!x942_encode_otherinfo(ctx->use_keybits ? ctx->dkm_len : 0,
451	ctx->cek_oid, ctx->cek_oid_len,
452	ctx->acvpinfo, ctx->acvpinfo_len,
453	ctx->partyuinfo, ctx->partyuinfo_len,
454	ctx->partyvinfo, ctx->partyvinfo_len,
455	ctx->supp_pubinfo, ctx->supp_pubinfo_len,
456	ctx->supp_privinfo, ctx->supp_privinfo_len,
457	&der, &der_len, &ctr)) {
458	ERR_raise(ERR_LIB_PROV, PROV_R_BAD_ENCODING);
459	return 0;
460	}
461	ret = x942kdf_hash_kdm(md, ctx->secret, ctx->secret_len,
462	der, der_len, ctr, key, keylen);
463	OPENSSL_free(der);
464	return ret;
465	}
466
467	static int x942kdf_set_ctx_params(void *vctx, const OSSL_PARAM params[])
468	{
469	const OSSL_PARAM p, pq;
470	KDF_X942 *ctx = vctx;
471	OSSL_LIB_CTX *provctx = PROV_LIBCTX_OF(ctx->provctx);
472	const char *propq = NULL;
473	size_t id;
474
475	if (params == NULL)
476	return 1;
477	if (!ossl_prov_digest_load_from_params(&ctx->digest, params, provctx))
478	return 0;
479
480	p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_SECRET);
481	if (p == NULL)
482	p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_KEY);
483	if (p != NULL && !x942kdf_set_buffer(&ctx->secret, &ctx->secret_len, p))
484	return 0;
485
486	p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_ACVPINFO);
487	if (p != NULL
488	&& !x942kdf_set_buffer(&ctx->acvpinfo, &ctx->acvpinfo_len, p))
489	return 0;
490
491	p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_PARTYUINFO);
492	if (p == NULL)
493	p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_UKM);
494	if (p != NULL
495	&& !x942kdf_set_buffer(&ctx->partyuinfo, &ctx->partyuinfo_len, p))
496	return 0;
497
498	p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_PARTYVINFO);
499	if (p != NULL
500	&& !x942kdf_set_buffer(&ctx->partyvinfo, &ctx->partyvinfo_len, p))
501	return 0;
502
503	p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_USE_KEYBITS);
504	if (p != NULL && !OSSL_PARAM_get_int(p, &ctx->use_keybits))
505	return 0;
506
507	p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_SUPP_PUBINFO);
508	if (p != NULL) {
509	if (!x942kdf_set_buffer(&ctx->supp_pubinfo, &ctx->supp_pubinfo_len, p))
510	return 0;
511	ctx->use_keybits = 0;
512	}
513
514	p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_X942_SUPP_PRIVINFO);
515	if (p != NULL
516	&& !x942kdf_set_buffer(&ctx->supp_privinfo, &ctx->supp_privinfo_len, p))
517	return 0;
518
519	p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_CEK_ALG);
520	if (p != NULL) {
521	if (p->data_type != OSSL_PARAM_UTF8_STRING)
522	return 0;
523	pq = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_PROPERTIES);
524	/*
525	* We already grab the properties during ossl_prov_digest_load_from_params()
526	* so there is no need to check the validity again..
527	*/
528	if (pq != NULL)
529	propq = p->data;
530	if (find_alg_id(provctx, p->data, propq, &id) == 0)
531	return 0;
532	ctx->cek_oid = kek_algs[id].oid;
533	ctx->cek_oid_len = kek_algs[id].oid_len;
534	ctx->dkm_len = kek_algs[id].keklen;
535	}
536	return 1;
537	}
538
539	static const OSSL_PARAM x942kdf_settable_ctx_params(ossl_unused void ctx,
540	ossl_unused void *provctx)
541	{
542	static const OSSL_PARAM known_settable_ctx_params[] = {
543	OSSL_PARAM_utf8_string(OSSL_KDF_PARAM_PROPERTIES, NULL, 0),
544	OSSL_PARAM_utf8_string(OSSL_KDF_PARAM_DIGEST, NULL, 0),
545	OSSL_PARAM_octet_string(OSSL_KDF_PARAM_SECRET, NULL, 0),
546	OSSL_PARAM_octet_string(OSSL_KDF_PARAM_KEY, NULL, 0),
547	OSSL_PARAM_octet_string(OSSL_KDF_PARAM_UKM, NULL, 0),
548	OSSL_PARAM_octet_string(OSSL_KDF_PARAM_X942_ACVPINFO, NULL, 0),
549	OSSL_PARAM_octet_string(OSSL_KDF_PARAM_X942_PARTYUINFO, NULL, 0),
550	OSSL_PARAM_octet_string(OSSL_KDF_PARAM_X942_PARTYVINFO, NULL, 0),
551	OSSL_PARAM_octet_string(OSSL_KDF_PARAM_X942_SUPP_PUBINFO, NULL, 0),
552	OSSL_PARAM_octet_string(OSSL_KDF_PARAM_X942_SUPP_PRIVINFO, NULL, 0),
553	OSSL_PARAM_int(OSSL_KDF_PARAM_X942_USE_KEYBITS, NULL),
554	OSSL_PARAM_utf8_string(OSSL_KDF_PARAM_CEK_ALG, NULL, 0),
555	OSSL_PARAM_END
556	};
557	return known_settable_ctx_params;
558	}
559
560	static int x942kdf_get_ctx_params(void *vctx, OSSL_PARAM params[])
561	{
562	KDF_X942 ctx = (KDF_X942 )vctx;
563	OSSL_PARAM *p;
564
565	if ((p = OSSL_PARAM_locate(params, OSSL_KDF_PARAM_SIZE)) != NULL)
566	return OSSL_PARAM_set_size_t(p, x942kdf_size(ctx));
567	return -2;
568	}
569
570	static const OSSL_PARAM x942kdf_gettable_ctx_params(ossl_unused void ctx,
571	ossl_unused void *provctx)
572	{
573	static const OSSL_PARAM known_gettable_ctx_params[] = {
574	OSSL_PARAM_size_t(OSSL_KDF_PARAM_SIZE, NULL),
575	OSSL_PARAM_END
576	};
577	return known_gettable_ctx_params;
578	}
579
580	const OSSL_DISPATCH ossl_kdf_x942_kdf_functions[] = {
581	{ OSSL_FUNC_KDF_NEWCTX, (void(*)(void))x942kdf_new },
582	{ OSSL_FUNC_KDF_FREECTX, (void(*)(void))x942kdf_free },
583	{ OSSL_FUNC_KDF_RESET, (void(*)(void))x942kdf_reset },
584	{ OSSL_FUNC_KDF_DERIVE, (void(*)(void))x942kdf_derive },
585	{ OSSL_FUNC_KDF_SETTABLE_CTX_PARAMS,
586	(void(*)(void))x942kdf_settable_ctx_params },
587	{ OSSL_FUNC_KDF_SET_CTX_PARAMS, (void(*)(void))x942kdf_set_ctx_params },
588	{ OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
589	(void(*)(void))x942kdf_gettable_ctx_params },
590	{ OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))x942kdf_get_ctx_params },
591	{ 0, NULL }
592	};

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source: vbox/trunk/src/libs/openssl-3.0.2/providers/implementations/kdfs/x942kdf.c@ 94552

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