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source: vbox/trunk/src/libs/openssl-3.0.7/test/tls-provider.c@ 97673

最後變更 在這個檔案從97673是 94404,由 vboxsync 提交於 3 年 前

libs/openssl: Update to 3.0.2 and switch to it, bugref:10128
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1/*
2 * Copyright 2019-2022 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#include <string.h>
11#include <openssl/core_names.h>
12#include <openssl/core_dispatch.h>
13#include <openssl/rand.h>
14#include <openssl/params.h>
15/* For TLS1_3_VERSION */
16#include <openssl/ssl.h>
17#include "internal/nelem.h"
18
19static OSSL_FUNC_keymgmt_import_fn xor_import;
20static OSSL_FUNC_keymgmt_import_types_fn xor_import_types;
21static OSSL_FUNC_keymgmt_export_fn xor_export;
22static OSSL_FUNC_keymgmt_export_types_fn xor_export_types;
23
24int tls_provider_init(const OSSL_CORE_HANDLE *handle,
25 const OSSL_DISPATCH *in,
26 const OSSL_DISPATCH **out,
27 void **provctx);
28
29#define XOR_KEY_SIZE 32
30
31/*
32 * Top secret. This algorithm only works if no one knows what this number is.
33 * Please don't tell anyone what it is.
34 *
35 * This algorithm is for testing only - don't really use it!
36 */
37static const unsigned char private_constant[XOR_KEY_SIZE] = {
38 0xd3, 0x6b, 0x54, 0xec, 0x5b, 0xac, 0x89, 0x96, 0x8c, 0x2c, 0x66, 0xa5,
39 0x67, 0x0d, 0xe3, 0xdd, 0x43, 0x69, 0xbc, 0x83, 0x3d, 0x60, 0xc7, 0xb8,
40 0x2b, 0x1c, 0x5a, 0xfd, 0xb5, 0xcd, 0xd0, 0xf8
41};
42
43typedef struct xorkey_st {
44 unsigned char privkey[XOR_KEY_SIZE];
45 unsigned char pubkey[XOR_KEY_SIZE];
46 int hasprivkey;
47 int haspubkey;
48} XORKEY;
49
50
51/* Key Management for the dummy XOR KEX and KEM algorithms */
52
53static OSSL_FUNC_keymgmt_new_fn xor_newdata;
54static OSSL_FUNC_keymgmt_free_fn xor_freedata;
55static OSSL_FUNC_keymgmt_has_fn xor_has;
56static OSSL_FUNC_keymgmt_dup_fn xor_dup;
57static OSSL_FUNC_keymgmt_gen_init_fn xor_gen_init;
58static OSSL_FUNC_keymgmt_gen_set_params_fn xor_gen_set_params;
59static OSSL_FUNC_keymgmt_gen_settable_params_fn xor_gen_settable_params;
60static OSSL_FUNC_keymgmt_gen_fn xor_gen;
61static OSSL_FUNC_keymgmt_gen_cleanup_fn xor_gen_cleanup;
62static OSSL_FUNC_keymgmt_get_params_fn xor_get_params;
63static OSSL_FUNC_keymgmt_gettable_params_fn xor_gettable_params;
64static OSSL_FUNC_keymgmt_set_params_fn xor_set_params;
65static OSSL_FUNC_keymgmt_settable_params_fn xor_settable_params;
66
67/*
68 * Dummy "XOR" Key Exchange algorithm. We just xor the private and public keys
69 * together. Don't use this!
70 */
71
72static OSSL_FUNC_keyexch_newctx_fn xor_newctx;
73static OSSL_FUNC_keyexch_init_fn xor_init;
74static OSSL_FUNC_keyexch_set_peer_fn xor_set_peer;
75static OSSL_FUNC_keyexch_derive_fn xor_derive;
76static OSSL_FUNC_keyexch_freectx_fn xor_freectx;
77static OSSL_FUNC_keyexch_dupctx_fn xor_dupctx;
78
79/*
80 * Dummy "XOR" Key Encapsulation Method. We just build a KEM over the xor KEX.
81 * Don't use this!
82 */
83
84static OSSL_FUNC_kem_newctx_fn xor_newctx;
85static OSSL_FUNC_kem_freectx_fn xor_freectx;
86static OSSL_FUNC_kem_dupctx_fn xor_dupctx;
87static OSSL_FUNC_kem_encapsulate_init_fn xor_init;
88static OSSL_FUNC_kem_encapsulate_fn xor_encapsulate;
89static OSSL_FUNC_kem_decapsulate_init_fn xor_init;
90static OSSL_FUNC_kem_decapsulate_fn xor_decapsulate;
91
92
93/*
94 * We define 2 dummy TLS groups called "xorgroup" and "xorkemgroup" for test
95 * purposes
96 */
97struct tls_group_st {
98 unsigned int group_id; /* for "tls-group-id", see provider-base(7) */
99 unsigned int secbits;
100 unsigned int mintls;
101 unsigned int maxtls;
102 unsigned int mindtls;
103 unsigned int maxdtls;
104 unsigned int is_kem; /* boolean */
105};
106
107#define XORGROUP_NAME "xorgroup"
108#define XORGROUP_NAME_INTERNAL "xorgroup-int"
109static struct tls_group_st xor_group = {
110 0, /* group_id, set by randomize_tls_group_id() */
111 128, /* secbits */
112 TLS1_3_VERSION, /* mintls */
113 0, /* maxtls */
114 -1, /* mindtls */
115 -1, /* maxdtls */
116 0 /* is_kem */
117};
118
119#define XORKEMGROUP_NAME "xorkemgroup"
120#define XORKEMGROUP_NAME_INTERNAL "xorkemgroup-int"
121static struct tls_group_st xor_kemgroup = {
122 0, /* group_id, set by randomize_tls_group_id() */
123 128, /* secbits */
124 TLS1_3_VERSION, /* mintls */
125 0, /* maxtls */
126 -1, /* mindtls */
127 -1, /* maxdtls */
128 1 /* is_kem */
129};
130
131#define ALGORITHM "XOR"
132
133static const OSSL_PARAM xor_group_params[] = {
134 OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_GROUP_NAME,
135 XORGROUP_NAME, sizeof(XORGROUP_NAME)),
136 OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_GROUP_NAME_INTERNAL,
137 XORGROUP_NAME_INTERNAL,
138 sizeof(XORGROUP_NAME_INTERNAL)),
139 OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_GROUP_ALG, ALGORITHM,
140 sizeof(ALGORITHM)),
141 OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_GROUP_ID, &xor_group.group_id),
142 OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_GROUP_SECURITY_BITS,
143 &xor_group.secbits),
144 OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MIN_TLS, &xor_group.mintls),
145 OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MAX_TLS, &xor_group.maxtls),
146 OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MIN_DTLS, &xor_group.mindtls),
147 OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MAX_DTLS, &xor_group.maxdtls),
148 OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_GROUP_IS_KEM, &xor_group.is_kem),
149 OSSL_PARAM_END
150};
151
152static const OSSL_PARAM xor_kemgroup_params[] = {
153 OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_GROUP_NAME,
154 XORKEMGROUP_NAME, sizeof(XORKEMGROUP_NAME)),
155 OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_GROUP_NAME_INTERNAL,
156 XORKEMGROUP_NAME_INTERNAL,
157 sizeof(XORKEMGROUP_NAME_INTERNAL)),
158 OSSL_PARAM_utf8_string(OSSL_CAPABILITY_TLS_GROUP_ALG, ALGORITHM,
159 sizeof(ALGORITHM)),
160 OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_GROUP_ID, &xor_kemgroup.group_id),
161 OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_GROUP_SECURITY_BITS,
162 &xor_kemgroup.secbits),
163 OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MIN_TLS, &xor_kemgroup.mintls),
164 OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MAX_TLS, &xor_kemgroup.maxtls),
165 OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MIN_DTLS, &xor_kemgroup.mindtls),
166 OSSL_PARAM_int(OSSL_CAPABILITY_TLS_GROUP_MAX_DTLS, &xor_kemgroup.maxdtls),
167 OSSL_PARAM_uint(OSSL_CAPABILITY_TLS_GROUP_IS_KEM, &xor_kemgroup.is_kem),
168 OSSL_PARAM_END
169};
170
171#define NUM_DUMMY_GROUPS 50
172static char *dummy_group_names[NUM_DUMMY_GROUPS];
173
174static int tls_prov_get_capabilities(void *provctx, const char *capability,
175 OSSL_CALLBACK *cb, void *arg)
176{
177 int ret;
178 int i;
179 const char *dummy_base = "dummy";
180 const size_t dummy_name_max_size = strlen(dummy_base) + 3;
181
182 if (strcmp(capability, "TLS-GROUP") != 0) {
183 /* We don't support this capability */
184 return 0;
185 }
186
187 /* Register our 2 groups */
188 ret = cb(xor_group_params, arg);
189 ret &= cb(xor_kemgroup_params, arg);
190
191 /*
192 * Now register some dummy groups > GROUPLIST_INCREMENT (== 40) as defined
193 * in ssl/t1_lib.c, to make sure we exercise the code paths for registering
194 * large numbers of groups.
195 */
196
197 for (i = 0; i < NUM_DUMMY_GROUPS; i++) {
198 OSSL_PARAM dummygroup[OSSL_NELEM(xor_group_params)];
199
200 memcpy(dummygroup, xor_group_params, sizeof(xor_group_params));
201
202 /* Give the dummy group a unique name */
203 if (dummy_group_names[i] == NULL) {
204 dummy_group_names[i] = OPENSSL_zalloc(dummy_name_max_size);
205 if (dummy_group_names[i] == NULL)
206 return 0;
207 BIO_snprintf(dummy_group_names[i],
208 dummy_name_max_size,
209 "%s%d", dummy_base, i);
210 }
211 dummygroup[0].data = dummy_group_names[i];
212 dummygroup[0].data_size = strlen(dummy_group_names[i]) + 1;
213 ret &= cb(dummygroup, arg);
214 }
215
216 return ret;
217}
218
219/*
220 * Dummy "XOR" Key Exchange algorithm. We just xor the private and public keys
221 * together. Don't use this!
222 */
223
224typedef struct {
225 XORKEY *key;
226 XORKEY *peerkey;
227 void *provctx;
228} PROV_XOR_CTX;
229
230static void *xor_newctx(void *provctx)
231{
232 PROV_XOR_CTX *pxorctx = OPENSSL_zalloc(sizeof(PROV_XOR_CTX));
233
234 if (pxorctx == NULL)
235 return NULL;
236
237 pxorctx->provctx = provctx;
238
239 return pxorctx;
240}
241
242static int xor_init(void *vpxorctx, void *vkey,
243 ossl_unused const OSSL_PARAM params[])
244{
245 PROV_XOR_CTX *pxorctx = (PROV_XOR_CTX *)vpxorctx;
246
247 if (pxorctx == NULL || vkey == NULL)
248 return 0;
249 pxorctx->key = vkey;
250 return 1;
251}
252
253static int xor_set_peer(void *vpxorctx, void *vpeerkey)
254{
255 PROV_XOR_CTX *pxorctx = (PROV_XOR_CTX *)vpxorctx;
256
257 if (pxorctx == NULL || vpeerkey == NULL)
258 return 0;
259 pxorctx->peerkey = vpeerkey;
260 return 1;
261}
262
263static int xor_derive(void *vpxorctx, unsigned char *secret, size_t *secretlen,
264 size_t outlen)
265{
266 PROV_XOR_CTX *pxorctx = (PROV_XOR_CTX *)vpxorctx;
267 int i;
268
269 if (pxorctx->key == NULL || pxorctx->peerkey == NULL)
270 return 0;
271
272 *secretlen = XOR_KEY_SIZE;
273 if (secret == NULL)
274 return 1;
275
276 if (outlen < XOR_KEY_SIZE)
277 return 0;
278
279 for (i = 0; i < XOR_KEY_SIZE; i++)
280 secret[i] = pxorctx->key->privkey[i] ^ pxorctx->peerkey->pubkey[i];
281
282 return 1;
283}
284
285static void xor_freectx(void *pxorctx)
286{
287 OPENSSL_free(pxorctx);
288}
289
290static void *xor_dupctx(void *vpxorctx)
291{
292 PROV_XOR_CTX *srcctx = (PROV_XOR_CTX *)vpxorctx;
293 PROV_XOR_CTX *dstctx;
294
295 dstctx = OPENSSL_zalloc(sizeof(*srcctx));
296 if (dstctx == NULL)
297 return NULL;
298
299 *dstctx = *srcctx;
300
301 return dstctx;
302}
303
304static const OSSL_DISPATCH xor_keyexch_functions[] = {
305 { OSSL_FUNC_KEYEXCH_NEWCTX, (void (*)(void))xor_newctx },
306 { OSSL_FUNC_KEYEXCH_INIT, (void (*)(void))xor_init },
307 { OSSL_FUNC_KEYEXCH_DERIVE, (void (*)(void))xor_derive },
308 { OSSL_FUNC_KEYEXCH_SET_PEER, (void (*)(void))xor_set_peer },
309 { OSSL_FUNC_KEYEXCH_FREECTX, (void (*)(void))xor_freectx },
310 { OSSL_FUNC_KEYEXCH_DUPCTX, (void (*)(void))xor_dupctx },
311 { 0, NULL }
312};
313
314static const OSSL_ALGORITHM tls_prov_keyexch[] = {
315 /*
316 * Obviously this is not FIPS approved, but in order to test in conjuction
317 * with the FIPS provider we pretend that it is.
318 */
319 { "XOR", "provider=tls-provider,fips=yes", xor_keyexch_functions },
320 { NULL, NULL, NULL }
321};
322
323/*
324 * Dummy "XOR" Key Encapsulation Method. We just build a KEM over the xor KEX.
325 * Don't use this!
326 */
327
328static int xor_encapsulate(void *vpxorctx,
329 unsigned char *ct, size_t *ctlen,
330 unsigned char *ss, size_t *sslen)
331{
332 /*
333 * We are building this around a KEX:
334 *
335 * 1. we generate ephemeral keypair
336 * 2. we encode our ephemeral pubkey as the outgoing ct
337 * 3. we derive using our ephemeral privkey in combination with the peer
338 * pubkey from the ctx; the result is our ss.
339 */
340 int rv = 0;
341 void *genctx = NULL, *derivectx = NULL;
342 XORKEY *ourkey = NULL;
343 PROV_XOR_CTX *pxorctx = vpxorctx;
344
345 if (ct == NULL || ss == NULL) {
346 /* Just return sizes */
347
348 if (ctlen == NULL && sslen == NULL)
349 return 0;
350 if (ctlen != NULL)
351 *ctlen = XOR_KEY_SIZE;
352 if (sslen != NULL)
353 *sslen = XOR_KEY_SIZE;
354 return 1;
355 }
356
357 /* 1. Generate keypair */
358 genctx = xor_gen_init(pxorctx->provctx, OSSL_KEYMGMT_SELECT_KEYPAIR, NULL);
359 if (genctx == NULL)
360 goto end;
361 ourkey = xor_gen(genctx, NULL, NULL);
362 if (ourkey == NULL)
363 goto end;
364
365 /* 2. Encode ephemeral pubkey as ct */
366 memcpy(ct, ourkey->pubkey, XOR_KEY_SIZE);
367 *ctlen = XOR_KEY_SIZE;
368
369 /* 3. Derive ss via KEX */
370 derivectx = xor_newctx(pxorctx->provctx);
371 if (derivectx == NULL
372 || !xor_init(derivectx, ourkey, NULL)
373 || !xor_set_peer(derivectx, pxorctx->key)
374 || !xor_derive(derivectx, ss, sslen, XOR_KEY_SIZE))
375 goto end;
376
377 rv = 1;
378
379 end:
380 xor_gen_cleanup(genctx);
381 xor_freedata(ourkey);
382 xor_freectx(derivectx);
383 return rv;
384}
385
386static int xor_decapsulate(void *vpxorctx,
387 unsigned char *ss, size_t *sslen,
388 const unsigned char *ct, size_t ctlen)
389{
390 /*
391 * We are building this around a KEX:
392 *
393 * - ct is our peer's pubkey
394 * - decapsulate is just derive.
395 */
396 int rv = 0;
397 void *derivectx = NULL;
398 XORKEY *peerkey = NULL;
399 PROV_XOR_CTX *pxorctx = vpxorctx;
400
401 if (ss == NULL) {
402 /* Just return size */
403 if (sslen == NULL)
404 return 0;
405 *sslen = XOR_KEY_SIZE;
406 return 1;
407 }
408
409 if (ctlen != XOR_KEY_SIZE)
410 return 0;
411 peerkey = xor_newdata(pxorctx->provctx);
412 if (peerkey == NULL)
413 goto end;
414 memcpy(peerkey->pubkey, ct, XOR_KEY_SIZE);
415
416 /* Derive ss via KEX */
417 derivectx = xor_newctx(pxorctx->provctx);
418 if (derivectx == NULL
419 || !xor_init(derivectx, pxorctx->key, NULL)
420 || !xor_set_peer(derivectx, peerkey)
421 || !xor_derive(derivectx, ss, sslen, XOR_KEY_SIZE))
422 goto end;
423
424 rv = 1;
425
426 end:
427 xor_freedata(peerkey);
428 xor_freectx(derivectx);
429 return rv;
430}
431
432static const OSSL_DISPATCH xor_kem_functions[] = {
433 { OSSL_FUNC_KEM_NEWCTX, (void (*)(void))xor_newctx },
434 { OSSL_FUNC_KEM_FREECTX, (void (*)(void))xor_freectx },
435 { OSSL_FUNC_KEM_DUPCTX, (void (*)(void))xor_dupctx },
436 { OSSL_FUNC_KEM_ENCAPSULATE_INIT, (void (*)(void))xor_init },
437 { OSSL_FUNC_KEM_ENCAPSULATE, (void (*)(void))xor_encapsulate },
438 { OSSL_FUNC_KEM_DECAPSULATE_INIT, (void (*)(void))xor_init },
439 { OSSL_FUNC_KEM_DECAPSULATE, (void (*)(void))xor_decapsulate },
440 { 0, NULL }
441};
442
443static const OSSL_ALGORITHM tls_prov_kem[] = {
444 /*
445 * Obviously this is not FIPS approved, but in order to test in conjuction
446 * with the FIPS provider we pretend that it is.
447 */
448 { "XOR", "provider=tls-provider,fips=yes", xor_kem_functions },
449 { NULL, NULL, NULL }
450};
451
452/* Key Management for the dummy XOR key exchange algorithm */
453
454static void *xor_newdata(void *provctx)
455{
456 return OPENSSL_zalloc(sizeof(XORKEY));
457}
458
459static void xor_freedata(void *keydata)
460{
461 OPENSSL_free(keydata);
462}
463
464static int xor_has(const void *vkey, int selection)
465{
466 const XORKEY *key = vkey;
467 int ok = 0;
468
469 if (key != NULL) {
470 ok = 1;
471
472 if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
473 ok = ok && key->haspubkey;
474 if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
475 ok = ok && key->hasprivkey;
476 }
477 return ok;
478}
479
480static void *xor_dup(const void *vfromkey, int selection)
481{
482 XORKEY *tokey = xor_newdata(NULL);
483 const XORKEY *fromkey = vfromkey;
484 int ok = 0;
485
486 if (tokey != NULL && fromkey != NULL) {
487 ok = 1;
488
489 if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) {
490 if (fromkey->haspubkey) {
491 memcpy(tokey->pubkey, fromkey->pubkey, XOR_KEY_SIZE);
492 tokey->haspubkey = 1;
493 } else {
494 tokey->haspubkey = 0;
495 }
496 }
497 if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) {
498 if (fromkey->hasprivkey) {
499 memcpy(tokey->privkey, fromkey->privkey, XOR_KEY_SIZE);
500 tokey->hasprivkey = 1;
501 } else {
502 tokey->hasprivkey = 0;
503 }
504 }
505 }
506 if (!ok) {
507 xor_freedata(tokey);
508 tokey = NULL;
509 }
510 return tokey;
511}
512
513static ossl_inline int xor_get_params(void *vkey, OSSL_PARAM params[])
514{
515 XORKEY *key = vkey;
516 OSSL_PARAM *p;
517
518 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL
519 && !OSSL_PARAM_set_int(p, XOR_KEY_SIZE))
520 return 0;
521
522 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL
523 && !OSSL_PARAM_set_int(p, xor_group.secbits))
524 return 0;
525
526 if ((p = OSSL_PARAM_locate(params,
527 OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY)) != NULL) {
528 if (p->data_type != OSSL_PARAM_OCTET_STRING)
529 return 0;
530 p->return_size = XOR_KEY_SIZE;
531 if (p->data != NULL && p->data_size >= XOR_KEY_SIZE)
532 memcpy(p->data, key->pubkey, XOR_KEY_SIZE);
533 }
534
535 return 1;
536}
537
538static const OSSL_PARAM xor_params[] = {
539 OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL),
540 OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL),
541 OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY, NULL, 0),
542 OSSL_PARAM_END
543};
544
545static const OSSL_PARAM *xor_gettable_params(void *provctx)
546{
547 return xor_params;
548}
549
550static int xor_set_params(void *vkey, const OSSL_PARAM params[])
551{
552 XORKEY *key = vkey;
553 const OSSL_PARAM *p;
554
555 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY);
556 if (p != NULL) {
557 if (p->data_type != OSSL_PARAM_OCTET_STRING
558 || p->data_size != XOR_KEY_SIZE)
559 return 0;
560 memcpy(key->pubkey, p->data, XOR_KEY_SIZE);
561 key->haspubkey = 1;
562 }
563
564 return 1;
565}
566
567static const OSSL_PARAM xor_known_settable_params[] = {
568 OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY, NULL, 0),
569 OSSL_PARAM_END
570};
571
572static const OSSL_PARAM *xor_settable_params(void *provctx)
573{
574 return xor_known_settable_params;
575}
576
577struct xor_gen_ctx {
578 int selection;
579 OSSL_LIB_CTX *libctx;
580};
581
582static void *xor_gen_init(void *provctx, int selection,
583 const OSSL_PARAM params[])
584{
585 struct xor_gen_ctx *gctx = NULL;
586
587 if ((selection & (OSSL_KEYMGMT_SELECT_KEYPAIR
588 | OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS)) == 0)
589 return NULL;
590
591 if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL)
592 gctx->selection = selection;
593
594 /* Our provctx is really just an OSSL_LIB_CTX */
595 gctx->libctx = (OSSL_LIB_CTX *)provctx;
596
597 if (!xor_gen_set_params(gctx, params)) {
598 OPENSSL_free(gctx);
599 return NULL;
600 }
601 return gctx;
602}
603
604static int xor_gen_set_params(void *genctx, const OSSL_PARAM params[])
605{
606 struct xor_gen_ctx *gctx = genctx;
607 const OSSL_PARAM *p;
608
609 if (gctx == NULL)
610 return 0;
611
612 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_GROUP_NAME);
613 if (p != NULL) {
614 if (p->data_type != OSSL_PARAM_UTF8_STRING
615 || (strcmp(p->data, XORGROUP_NAME_INTERNAL) != 0
616 && strcmp(p->data, XORKEMGROUP_NAME_INTERNAL) != 0))
617 return 0;
618 }
619
620 return 1;
621}
622
623static const OSSL_PARAM *xor_gen_settable_params(ossl_unused void *genctx,
624 ossl_unused void *provctx)
625{
626 static OSSL_PARAM settable[] = {
627 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME, NULL, 0),
628 OSSL_PARAM_END
629 };
630 return settable;
631}
632
633static void *xor_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg)
634{
635 struct xor_gen_ctx *gctx = genctx;
636 XORKEY *key = OPENSSL_zalloc(sizeof(*key));
637 size_t i;
638
639 if (key == NULL)
640 return NULL;
641
642 if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
643 if (RAND_bytes_ex(gctx->libctx, key->privkey, XOR_KEY_SIZE, 0) <= 0) {
644 OPENSSL_free(key);
645 return NULL;
646 }
647 for (i = 0; i < XOR_KEY_SIZE; i++)
648 key->pubkey[i] = key->privkey[i] ^ private_constant[i];
649 key->hasprivkey = 1;
650 key->haspubkey = 1;
651 }
652
653 return key;
654}
655
656/* IMPORT + EXPORT */
657
658static int xor_import(void *vkey, int select, const OSSL_PARAM params[])
659{
660 XORKEY *key = vkey;
661 const OSSL_PARAM *param_priv_key, *param_pub_key;
662 unsigned char privkey[XOR_KEY_SIZE];
663 unsigned char pubkey[XOR_KEY_SIZE];
664 void *pprivkey = privkey, *ppubkey = pubkey;
665 size_t priv_len = 0, pub_len = 0;
666 int res = 0;
667
668 if (key == NULL || (select & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
669 return 0;
670
671 memset(privkey, 0, sizeof(privkey));
672 memset(pubkey, 0, sizeof(pubkey));
673 param_priv_key = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
674 param_pub_key = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PUB_KEY);
675
676 if ((param_priv_key != NULL
677 && !OSSL_PARAM_get_octet_string(param_priv_key, &pprivkey,
678 sizeof(privkey), &priv_len))
679 || (param_pub_key != NULL
680 && !OSSL_PARAM_get_octet_string(param_pub_key, &ppubkey,
681 sizeof(pubkey), &pub_len)))
682 goto err;
683
684 if (priv_len > 0) {
685 memcpy(key->privkey, privkey, priv_len);
686 key->hasprivkey = 1;
687 }
688 if (pub_len > 0) {
689 memcpy(key->pubkey, pubkey, pub_len);
690 key->haspubkey = 1;
691 }
692 res = 1;
693 err:
694 return res;
695}
696
697static int xor_export(void *vkey, int select, OSSL_CALLBACK *param_cb,
698 void *cbarg)
699{
700 XORKEY *key = vkey;
701 OSSL_PARAM params[3], *p = params;
702
703 if (key == NULL || (select & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
704 return 0;
705
706 *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
707 key->privkey,
708 sizeof(key->privkey));
709 *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PUB_KEY,
710 key->pubkey, sizeof(key->pubkey));
711 *p++ = OSSL_PARAM_construct_end();
712
713 return param_cb(params, cbarg);
714}
715
716static const OSSL_PARAM xor_key_types[] = {
717 OSSL_PARAM_BN(OSSL_PKEY_PARAM_PUB_KEY, NULL, 0),
718 OSSL_PARAM_BN(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
719 OSSL_PARAM_END
720};
721
722static const OSSL_PARAM *xor_import_types(int select)
723{
724 return (select & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0 ? xor_key_types : NULL;
725}
726
727static const OSSL_PARAM *xor_export_types(int select)
728{
729 return (select & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0 ? xor_key_types : NULL;
730}
731
732static void xor_gen_cleanup(void *genctx)
733{
734 OPENSSL_free(genctx);
735}
736
737static const OSSL_DISPATCH xor_keymgmt_functions[] = {
738 { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))xor_newdata },
739 { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))xor_gen_init },
740 { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))xor_gen_set_params },
741 { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
742 (void (*)(void))xor_gen_settable_params },
743 { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))xor_gen },
744 { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))xor_gen_cleanup },
745 { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))xor_get_params },
746 { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))xor_gettable_params },
747 { OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))xor_set_params },
748 { OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))xor_settable_params },
749 { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))xor_has },
750 { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))xor_dup },
751 { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))xor_freedata },
752 { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))xor_import },
753 { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))xor_import_types },
754 { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))xor_export },
755 { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))xor_export_types },
756 { 0, NULL }
757};
758
759static const OSSL_ALGORITHM tls_prov_keymgmt[] = {
760 /*
761 * Obviously this is not FIPS approved, but in order to test in conjuction
762 * with the FIPS provider we pretend that it is.
763 */
764 { "XOR", "provider=tls-provider,fips=yes", xor_keymgmt_functions },
765 { NULL, NULL, NULL }
766};
767
768static const OSSL_ALGORITHM *tls_prov_query(void *provctx, int operation_id,
769 int *no_cache)
770{
771 *no_cache = 0;
772 switch (operation_id) {
773 case OSSL_OP_KEYMGMT:
774 return tls_prov_keymgmt;
775 case OSSL_OP_KEYEXCH:
776 return tls_prov_keyexch;
777 case OSSL_OP_KEM:
778 return tls_prov_kem;
779 }
780 return NULL;
781}
782
783static void tls_prov_teardown(void *provctx)
784{
785 int i;
786
787 OSSL_LIB_CTX_free(provctx);
788
789 for (i = 0; i < NUM_DUMMY_GROUPS; i++) {
790 OPENSSL_free(dummy_group_names[i]);
791 dummy_group_names[i] = NULL;
792 }
793}
794
795/* Functions we provide to the core */
796static const OSSL_DISPATCH tls_prov_dispatch_table[] = {
797 { OSSL_FUNC_PROVIDER_TEARDOWN, (void (*)(void))tls_prov_teardown },
798 { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))tls_prov_query },
799 { OSSL_FUNC_PROVIDER_GET_CAPABILITIES, (void (*)(void))tls_prov_get_capabilities },
800 { 0, NULL }
801};
802
803static
804unsigned int randomize_tls_group_id(OSSL_LIB_CTX *libctx)
805{
806 /*
807 * Randomise the group_id we're going to use to ensure we don't interoperate
808 * with anything but ourselves.
809 */
810 unsigned int group_id;
811 static unsigned int mem[10] = { 0 };
812 static int in_mem = 0;
813 int i;
814
815 retry:
816 if (RAND_bytes_ex(libctx, (unsigned char *)&group_id, sizeof(group_id), 0) <= 0)
817 return 0;
818 /*
819 * Ensure group_id is within the IANA Reserved for private use range
820 * (65024-65279)
821 */
822 group_id %= 65279 - 65024;
823 group_id += 65024;
824
825 /* Ensure we did not already issue this group_id */
826 for (i = 0; i < in_mem; i++)
827 if (mem[i] == group_id)
828 goto retry;
829
830 /* Add this group_id to the list of ids issued by this function */
831 mem[in_mem++] = group_id;
832
833 return group_id;
834}
835
836int tls_provider_init(const OSSL_CORE_HANDLE *handle,
837 const OSSL_DISPATCH *in,
838 const OSSL_DISPATCH **out,
839 void **provctx)
840{
841 OSSL_LIB_CTX *libctx = OSSL_LIB_CTX_new();
842
843 if (libctx == NULL)
844 return 0;
845
846 *provctx = libctx;
847
848 /*
849 * Randomise the group_id we're going to use to ensure we don't interoperate
850 * with anything but ourselves.
851 */
852 xor_group.group_id = randomize_tls_group_id(libctx);
853 xor_kemgroup.group_id = randomize_tls_group_id(libctx);
854
855 *out = tls_prov_dispatch_table;
856 return 1;
857}
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