2 * Copyright 2011-2018 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include "internal/nelem.h"
12 #include <openssl/crypto.h>
13 #include <openssl/err.h>
14 #include <openssl/rand.h>
15 #include <openssl/obj_mac.h>
16 #include <openssl/evp.h>
17 #include <openssl/aes.h>
18 #include "../crypto/rand/rand_local.h"
19 #include "../include/crypto/rand.h"
26 #if defined(OPENSSL_SYS_UNIX)
27 # include <sys/types.h>
28 # include <sys/wait.h>
35 typedef struct drbg_selftest_data_st
{
40 /* KAT data for no PR */
41 const unsigned char *entropy
;
43 const unsigned char *nonce
;
45 const unsigned char *pers
;
47 const unsigned char *adin
;
49 const unsigned char *entropyreseed
;
50 size_t entropyreseedlen
;
51 const unsigned char *adinreseed
;
53 const unsigned char *adin2
;
55 const unsigned char *expected
;
57 const unsigned char *kat2
;
61 const unsigned char *entropy_pr
;
63 const unsigned char *nonce_pr
;
65 const unsigned char *pers_pr
;
67 const unsigned char *adin_pr
;
69 const unsigned char *entropypr_pr
;
70 size_t entropyprlen_pr
;
71 const unsigned char *ading_pr
;
73 const unsigned char *entropyg_pr
;
74 size_t entropyglen_pr
;
75 const unsigned char *kat_pr
;
77 const unsigned char *kat2_pr
;
81 #define make_drbg_test_data(nid, flag, pr, post) {\
83 pr##_entropyinput, sizeof(pr##_entropyinput), \
84 pr##_nonce, sizeof(pr##_nonce), \
85 pr##_personalizationstring, sizeof(pr##_personalizationstring), \
86 pr##_additionalinput, sizeof(pr##_additionalinput), \
87 pr##_entropyinputreseed, sizeof(pr##_entropyinputreseed), \
88 pr##_additionalinputreseed, sizeof(pr##_additionalinputreseed), \
89 pr##_additionalinput2, sizeof(pr##_additionalinput2), \
90 pr##_int_returnedbits, sizeof(pr##_int_returnedbits), \
91 pr##_returnedbits, sizeof(pr##_returnedbits), \
92 pr##_pr_entropyinput, sizeof(pr##_pr_entropyinput), \
93 pr##_pr_nonce, sizeof(pr##_pr_nonce), \
94 pr##_pr_personalizationstring, sizeof(pr##_pr_personalizationstring), \
95 pr##_pr_additionalinput, sizeof(pr##_pr_additionalinput), \
96 pr##_pr_entropyinputpr, sizeof(pr##_pr_entropyinputpr), \
97 pr##_pr_additionalinput2, sizeof(pr##_pr_additionalinput2), \
98 pr##_pr_entropyinputpr2, sizeof(pr##_pr_entropyinputpr2), \
99 pr##_pr_int_returnedbits, sizeof(pr##_pr_int_returnedbits), \
100 pr##_pr_returnedbits, sizeof(pr##_pr_returnedbits) \
103 #define make_drbg_test_data_use_df(nid, pr, p) \
104 make_drbg_test_data(nid, 0, pr, p)
106 #define make_drbg_test_data_no_df(nid, pr, p) \
107 make_drbg_test_data(nid, RAND_DRBG_FLAG_CTR_NO_DF, pr, p)
109 #define make_drbg_test_data_hash(nid, pr, p) \
110 make_drbg_test_data(nid, RAND_DRBG_FLAG_HMAC, hmac_##pr, p), \
111 make_drbg_test_data(nid, 0, pr, p)
113 static DRBG_SELFTEST_DATA drbg_test
[] = {
115 /* FIPS mode doesn't support CTR DRBG without a derivation function */
116 make_drbg_test_data_no_df (NID_aes_128_ctr
, aes_128_no_df
, 0),
117 make_drbg_test_data_no_df (NID_aes_192_ctr
, aes_192_no_df
, 0),
118 make_drbg_test_data_no_df (NID_aes_256_ctr
, aes_256_no_df
, 1),
120 make_drbg_test_data_use_df(NID_aes_128_ctr
, aes_128_use_df
, 0),
121 make_drbg_test_data_use_df(NID_aes_192_ctr
, aes_192_use_df
, 0),
122 make_drbg_test_data_use_df(NID_aes_256_ctr
, aes_256_use_df
, 1),
123 make_drbg_test_data_hash(NID_sha1
, sha1
, 0),
124 make_drbg_test_data_hash(NID_sha224
, sha224
, 0),
125 make_drbg_test_data_hash(NID_sha256
, sha256
, 1),
126 make_drbg_test_data_hash(NID_sha384
, sha384
, 0),
127 make_drbg_test_data_hash(NID_sha512
, sha512
, 0),
131 * Test context data, attached as EXDATA to the RAND_DRBG
133 typedef struct test_ctx_st
{
134 const unsigned char *entropy
;
137 const unsigned char *nonce
;
142 static size_t kat_entropy(RAND_DRBG
*drbg
, unsigned char **pout
,
143 int entropy
, size_t min_len
, size_t max_len
,
144 int prediction_resistance
)
146 TEST_CTX
*t
= (TEST_CTX
*)RAND_DRBG_get_callback_data(drbg
);
149 *pout
= (unsigned char *)t
->entropy
;
150 return t
->entropylen
;
153 static size_t kat_nonce(RAND_DRBG
*drbg
, unsigned char **pout
,
154 int entropy
, size_t min_len
, size_t max_len
)
156 TEST_CTX
*t
= (TEST_CTX
*)RAND_DRBG_get_callback_data(drbg
);
159 *pout
= (unsigned char *)t
->nonce
;
164 * Disable CRNG testing if it is enabled.
165 * If the DRBG is ready or in an error state, this means an instantiate cycle
166 * for which the default personalisation string is used.
168 static int disable_crngt(RAND_DRBG
*drbg
)
170 static const char pers
[] = DRBG_DEFAULT_PERS_STRING
;
171 const int instantiate
= drbg
->state
!= DRBG_UNINITIALISED
;
173 if (drbg
->get_entropy
!= rand_crngt_get_entropy
)
176 if ((instantiate
&& !RAND_DRBG_uninstantiate(drbg
))
177 || !TEST_true(RAND_DRBG_set_callbacks(drbg
, &rand_drbg_get_entropy
,
178 &rand_drbg_cleanup_entropy
,
179 &rand_drbg_get_nonce
,
180 &rand_drbg_cleanup_nonce
))
182 && !RAND_DRBG_instantiate(drbg
, (const unsigned char *)pers
,
188 static int uninstantiate(RAND_DRBG
*drbg
)
190 int ret
= drbg
== NULL
? 1 : RAND_DRBG_uninstantiate(drbg
);
197 * Do a single KAT test. Return 0 on failure.
199 static int single_kat(DRBG_SELFTEST_DATA
*td
)
201 RAND_DRBG
*drbg
= NULL
;
204 unsigned char buff
[1024];
207 * Test without PR: Instantiate DRBG with test entropy, nonce and
208 * personalisation string.
210 if (!TEST_ptr(drbg
= RAND_DRBG_new(td
->nid
, td
->flags
, NULL
)))
212 if (!TEST_true(RAND_DRBG_set_callbacks(drbg
, kat_entropy
, NULL
,
214 || !TEST_true(RAND_DRBG_set_callback_data(drbg
, &t
))
215 || !TEST_true(disable_crngt(drbg
))) {
219 memset(&t
, 0, sizeof(t
));
220 t
.entropy
= td
->entropy
;
221 t
.entropylen
= td
->entropylen
;
223 t
.noncelen
= td
->noncelen
;
225 if (!TEST_true(RAND_DRBG_instantiate(drbg
, td
->pers
, td
->perslen
))
226 || !TEST_true(RAND_DRBG_generate(drbg
, buff
, td
->exlen
, 0,
227 td
->adin
, td
->adinlen
))
228 || !TEST_mem_eq(td
->expected
, td
->exlen
, buff
, td
->exlen
))
231 /* Reseed DRBG with test entropy and additional input */
232 t
.entropy
= td
->entropyreseed
;
233 t
.entropylen
= td
->entropyreseedlen
;
234 if (!TEST_true(RAND_DRBG_reseed(drbg
, td
->adinreseed
, td
->adinreseedlen
, 0)
235 || !TEST_true(RAND_DRBG_generate(drbg
, buff
, td
->kat2len
, 0,
236 td
->adin2
, td
->adin2len
))
237 || !TEST_mem_eq(td
->kat2
, td
->kat2len
, buff
, td
->kat2len
)))
242 * Now test with PR: Instantiate DRBG with test entropy, nonce and
243 * personalisation string.
245 if (!TEST_true(RAND_DRBG_set(drbg
, td
->nid
, td
->flags
))
246 || !TEST_true(RAND_DRBG_set_callbacks(drbg
, kat_entropy
, NULL
,
248 || !TEST_true(RAND_DRBG_set_callback_data(drbg
, &t
)))
250 t
.entropy
= td
->entropy_pr
;
251 t
.entropylen
= td
->entropylen_pr
;
252 t
.nonce
= td
->nonce_pr
;
253 t
.noncelen
= td
->noncelen_pr
;
256 if (!TEST_true(RAND_DRBG_instantiate(drbg
, td
->pers_pr
, td
->perslen_pr
)))
260 * Now generate with PR: we need to supply entropy as this will
261 * perform a reseed operation.
263 t
.entropy
= td
->entropypr_pr
;
264 t
.entropylen
= td
->entropyprlen_pr
;
265 if (!TEST_true(RAND_DRBG_generate(drbg
, buff
, td
->katlen_pr
, 1,
266 td
->adin_pr
, td
->adinlen_pr
))
267 || !TEST_mem_eq(td
->kat_pr
, td
->katlen_pr
, buff
, td
->katlen_pr
))
271 * Now generate again with PR: supply new entropy again.
273 t
.entropy
= td
->entropyg_pr
;
274 t
.entropylen
= td
->entropyglen_pr
;
276 if (!TEST_true(RAND_DRBG_generate(drbg
, buff
, td
->kat2len_pr
, 1,
277 td
->ading_pr
, td
->adinglen_pr
))
278 || !TEST_mem_eq(td
->kat2_pr
, td
->kat2len_pr
,
279 buff
, td
->kat2len_pr
))
284 RAND_DRBG_free(drbg
);
285 return failures
== 0;
289 * Initialise a DRBG based on selftest data
291 static int init(RAND_DRBG
*drbg
, DRBG_SELFTEST_DATA
*td
, TEST_CTX
*t
)
293 if (!TEST_true(RAND_DRBG_set(drbg
, td
->nid
, td
->flags
))
294 || !TEST_true(RAND_DRBG_set_callbacks(drbg
, kat_entropy
, NULL
,
297 RAND_DRBG_set_callback_data(drbg
, t
);
298 t
->entropy
= td
->entropy
;
299 t
->entropylen
= td
->entropylen
;
300 t
->nonce
= td
->nonce
;
301 t
->noncelen
= td
->noncelen
;
308 * Initialise and instantiate DRBG based on selftest data
310 static int instantiate(RAND_DRBG
*drbg
, DRBG_SELFTEST_DATA
*td
,
313 if (!TEST_true(init(drbg
, td
, t
))
314 || !TEST_true(RAND_DRBG_instantiate(drbg
, td
->pers
, td
->perslen
)))
320 * Perform extensive error checking as required by SP800-90.
321 * Induce several failure modes and check an error condition is set.
323 static int error_check(DRBG_SELFTEST_DATA
*td
)
325 static char zero
[sizeof(RAND_DRBG
)];
326 RAND_DRBG
*drbg
= NULL
;
328 unsigned char buff
[1024];
329 unsigned int reseed_counter_tmp
;
332 if (!TEST_ptr(drbg
= RAND_DRBG_new(td
->nid
, td
->flags
, NULL
))
333 || !TEST_true(disable_crngt(drbg
)))
337 * Personalisation string tests
340 /* Test detection of too large personalisation string */
341 if (!init(drbg
, td
, &t
)
342 || RAND_DRBG_instantiate(drbg
, td
->pers
, drbg
->max_perslen
+ 1) > 0)
346 * Entropy source tests
349 /* Test entropy source failure detection: i.e. returns no data */
351 if (TEST_int_le(RAND_DRBG_instantiate(drbg
, td
->pers
, td
->perslen
), 0))
354 /* Try to generate output from uninstantiated DRBG */
355 if (!TEST_false(RAND_DRBG_generate(drbg
, buff
, td
->exlen
, 0,
356 td
->adin
, td
->adinlen
))
357 || !uninstantiate(drbg
))
360 /* Test insufficient entropy */
361 t
.entropylen
= drbg
->min_entropylen
- 1;
362 if (!init(drbg
, td
, &t
)
363 || RAND_DRBG_instantiate(drbg
, td
->pers
, td
->perslen
) > 0
364 || !uninstantiate(drbg
))
367 /* Test too much entropy */
368 t
.entropylen
= drbg
->max_entropylen
+ 1;
369 if (!init(drbg
, td
, &t
)
370 || RAND_DRBG_instantiate(drbg
, td
->pers
, td
->perslen
) > 0
371 || !uninstantiate(drbg
))
378 /* Test too small nonce */
379 if (drbg
->min_noncelen
) {
380 t
.noncelen
= drbg
->min_noncelen
- 1;
381 if (!init(drbg
, td
, &t
)
382 || RAND_DRBG_instantiate(drbg
, td
->pers
, td
->perslen
) > 0
383 || !uninstantiate(drbg
))
387 /* Test too large nonce */
388 if (drbg
->max_noncelen
) {
389 t
.noncelen
= drbg
->max_noncelen
+ 1;
390 if (!init(drbg
, td
, &t
)
391 || RAND_DRBG_instantiate(drbg
, td
->pers
, td
->perslen
) > 0
392 || !uninstantiate(drbg
))
396 /* Instantiate with valid data, Check generation is now OK */
397 if (!instantiate(drbg
, td
, &t
)
398 || !TEST_true(RAND_DRBG_generate(drbg
, buff
, td
->exlen
, 0,
399 td
->adin
, td
->adinlen
)))
402 /* Request too much data for one request */
403 if (!TEST_false(RAND_DRBG_generate(drbg
, buff
, drbg
->max_request
+ 1, 0,
404 td
->adin
, td
->adinlen
)))
407 /* Try too large additional input */
408 if (!TEST_false(RAND_DRBG_generate(drbg
, buff
, td
->exlen
, 0,
409 td
->adin
, drbg
->max_adinlen
+ 1)))
413 * Check prediction resistance request fails if entropy source
417 if (TEST_false(RAND_DRBG_generate(drbg
, buff
, td
->exlen
, 1,
418 td
->adin
, td
->adinlen
))
419 || !uninstantiate(drbg
))
422 /* Instantiate again with valid data */
423 if (!instantiate(drbg
, td
, &t
))
425 reseed_counter_tmp
= drbg
->reseed_gen_counter
;
426 drbg
->reseed_gen_counter
= drbg
->reseed_interval
;
428 /* Generate output and check entropy has been requested for reseed */
430 if (!TEST_true(RAND_DRBG_generate(drbg
, buff
, td
->exlen
, 0,
431 td
->adin
, td
->adinlen
))
432 || !TEST_int_eq(t
.entropycnt
, 1)
433 || !TEST_int_eq(drbg
->reseed_gen_counter
, reseed_counter_tmp
+ 1)
434 || !uninstantiate(drbg
))
438 * Check prediction resistance request fails if entropy source
442 if (!TEST_false(RAND_DRBG_generate(drbg
, buff
, td
->exlen
, 1,
443 td
->adin
, td
->adinlen
))
444 || !uninstantiate(drbg
))
447 /* Test reseed counter works */
448 if (!instantiate(drbg
, td
, &t
))
450 reseed_counter_tmp
= drbg
->reseed_gen_counter
;
451 drbg
->reseed_gen_counter
= drbg
->reseed_interval
;
453 /* Generate output and check entropy has been requested for reseed */
455 if (!TEST_true(RAND_DRBG_generate(drbg
, buff
, td
->exlen
, 0,
456 td
->adin
, td
->adinlen
))
457 || !TEST_int_eq(t
.entropycnt
, 1)
458 || !TEST_int_eq(drbg
->reseed_gen_counter
, reseed_counter_tmp
+ 1)
459 || !uninstantiate(drbg
))
463 * Explicit reseed tests
466 /* Test explicit reseed with too large additional input */
467 if (!instantiate(drbg
, td
, &t
)
468 || RAND_DRBG_reseed(drbg
, td
->adin
, drbg
->max_adinlen
+ 1, 0) > 0)
471 /* Test explicit reseed with entropy source failure */
473 if (!TEST_int_le(RAND_DRBG_reseed(drbg
, td
->adin
, td
->adinlen
, 0), 0)
474 || !uninstantiate(drbg
))
477 /* Test explicit reseed with too much entropy */
478 if (!instantiate(drbg
, td
, &t
))
480 t
.entropylen
= drbg
->max_entropylen
+ 1;
481 if (!TEST_int_le(RAND_DRBG_reseed(drbg
, td
->adin
, td
->adinlen
, 0), 0)
482 || !uninstantiate(drbg
))
485 /* Test explicit reseed with too little entropy */
486 if (!instantiate(drbg
, td
, &t
))
488 t
.entropylen
= drbg
->min_entropylen
- 1;
489 if (!TEST_int_le(RAND_DRBG_reseed(drbg
, td
->adin
, td
->adinlen
, 0), 0)
490 || !uninstantiate(drbg
))
493 /* Standard says we have to check uninstantiate really zeroes */
494 if (!TEST_mem_eq(zero
, sizeof(drbg
->data
), &drbg
->data
, sizeof(drbg
->data
)))
501 RAND_DRBG_free(drbg
);
505 static int test_kats(int i
)
507 DRBG_SELFTEST_DATA
*td
= &drbg_test
[i
];
518 static int test_error_checks(int i
)
520 DRBG_SELFTEST_DATA
*td
= &drbg_test
[i
];
532 * Hook context data, attached as EXDATA to the RAND_DRBG
534 typedef struct hook_ctx_st
{
537 * Currently, all DRBGs use the same get_entropy() callback.
538 * The tests however, don't assume this and store
539 * the original callback for every DRBG separately.
541 RAND_DRBG_get_entropy_fn get_entropy
;
542 /* forces a failure of the get_entropy() call if nonzero */
544 /* counts successful reseeds */
548 static HOOK_CTX master_ctx
, public_ctx
, private_ctx
;
550 static HOOK_CTX
*get_hook_ctx(RAND_DRBG
*drbg
)
552 return (HOOK_CTX
*)RAND_DRBG_get_callback_data(drbg
);
555 /* Intercepts and counts calls to the get_entropy() callback */
556 static size_t get_entropy_hook(RAND_DRBG
*drbg
, unsigned char **pout
,
557 int entropy
, size_t min_len
, size_t max_len
,
558 int prediction_resistance
)
561 HOOK_CTX
*ctx
= get_hook_ctx(drbg
);
566 ret
= ctx
->get_entropy(drbg
, pout
, entropy
, min_len
, max_len
,
567 prediction_resistance
);
574 /* Installs a hook for the get_entropy() callback of the given drbg */
575 static void hook_drbg(RAND_DRBG
*drbg
, HOOK_CTX
*ctx
)
577 memset(ctx
, 0, sizeof(*ctx
));
579 ctx
->get_entropy
= drbg
->get_entropy
;
582 * We can't use the public API here, since it prohibits modifying
583 * the callbacks or the callback data of chained DRBGs.
585 drbg
->get_entropy
= get_entropy_hook
;
586 drbg
->callback_data
= ctx
;
589 /* Installs the hook for the get_entropy() callback of the given drbg */
590 static void unhook_drbg(RAND_DRBG
*drbg
)
592 HOOK_CTX
*ctx
= drbg
->callback_data
;
595 drbg
->get_entropy
= ctx
->get_entropy
;
598 /* Resets the given hook context */
599 static void reset_hook_ctx(HOOK_CTX
*ctx
)
602 ctx
->reseed_count
= 0;
605 /* Resets all drbg hook contexts */
606 static void reset_drbg_hook_ctx(void)
608 reset_hook_ctx(&master_ctx
);
609 reset_hook_ctx(&public_ctx
);
610 reset_hook_ctx(&private_ctx
);
614 * Generates random output using RAND_bytes() and RAND_priv_bytes()
615 * and checks whether the three shared DRBGs were reseeded as
618 * |expect_success|: expected outcome (as reported by RAND_status())
619 * |master|, |public|, |private|: pointers to the three shared DRBGs
620 * |expect_xxx_reseed| =
621 * 1: it is expected that the specified DRBG is reseeded
622 * 0: it is expected that the specified DRBG is not reseeded
623 * -1: don't check whether the specified DRBG was reseeded or not
624 * |reseed_time|: if nonzero, used instead of time(NULL) to set the
625 * |before_reseed| time.
627 static int test_drbg_reseed(int expect_success
,
631 int expect_master_reseed
,
632 int expect_public_reseed
,
633 int expect_private_reseed
,
637 unsigned char buf
[32];
638 time_t before_reseed
, after_reseed
;
639 int expected_state
= (expect_success
? DRBG_READY
: DRBG_ERROR
);
642 * step 1: check preconditions
645 /* Test whether seed propagation is enabled */
646 if (!TEST_int_ne(master
->reseed_prop_counter
, 0)
647 || !TEST_int_ne(public->reseed_prop_counter
, 0)
648 || !TEST_int_ne(private->reseed_prop_counter
, 0))
651 /* Check whether the master DRBG's reseed counter is the largest one */
652 if (!TEST_int_le(public->reseed_prop_counter
, master
->reseed_prop_counter
)
653 || !TEST_int_le(private->reseed_prop_counter
, master
->reseed_prop_counter
))
657 * step 2: generate random output
660 if (reseed_time
== 0)
661 reseed_time
= time(NULL
);
663 /* Generate random output from the public and private DRBG */
664 before_reseed
= expect_master_reseed
== 1 ? reseed_time
: 0;
665 if (!TEST_int_eq(RAND_bytes(buf
, sizeof(buf
)), expect_success
)
666 || !TEST_int_eq(RAND_priv_bytes(buf
, sizeof(buf
)), expect_success
))
668 after_reseed
= time(NULL
);
672 * step 3: check postconditions
675 /* Test whether reseeding succeeded as expected */
676 if (!TEST_int_eq(master
->state
, expected_state
)
677 || !TEST_int_eq(public->state
, expected_state
)
678 || !TEST_int_eq(private->state
, expected_state
))
681 if (expect_master_reseed
>= 0) {
682 /* Test whether master DRBG was reseeded as expected */
683 if (!TEST_int_eq(master_ctx
.reseed_count
, expect_master_reseed
))
687 if (expect_public_reseed
>= 0) {
688 /* Test whether public DRBG was reseeded as expected */
689 if (!TEST_int_eq(public_ctx
.reseed_count
, expect_public_reseed
))
693 if (expect_private_reseed
>= 0) {
694 /* Test whether public DRBG was reseeded as expected */
695 if (!TEST_int_eq(private_ctx
.reseed_count
, expect_private_reseed
))
699 if (expect_success
== 1) {
700 /* Test whether all three reseed counters are synchronized */
701 if (!TEST_int_eq(public->reseed_prop_counter
, master
->reseed_prop_counter
)
702 || !TEST_int_eq(private->reseed_prop_counter
, master
->reseed_prop_counter
))
705 /* Test whether reseed time of master DRBG is set correctly */
706 if (!TEST_time_t_le(before_reseed
, master
->reseed_time
)
707 || !TEST_time_t_le(master
->reseed_time
, after_reseed
))
710 /* Test whether reseed times of child DRBGs are synchronized with master */
711 if (!TEST_time_t_ge(public->reseed_time
, master
->reseed_time
)
712 || !TEST_time_t_ge(private->reseed_time
, master
->reseed_time
))
722 #if defined(OPENSSL_SYS_UNIX)
724 * Test whether master, public and private DRBG are reseeded after
725 * forking the process.
727 static int test_drbg_reseed_after_fork(RAND_DRBG
*master
,
735 if (!TEST_int_ge(pid
, 0))
739 /* I'm the parent; wait for the child and check its exit code */
740 return TEST_int_eq(waitpid(pid
, &status
, 0), pid
) && TEST_int_eq(status
, 0);
743 /* I'm the child; check whether all three DRBGs reseed. */
744 if (!TEST_true(test_drbg_reseed(1, master
, public, private, 1, 1, 1, 0)))
750 unhook_drbg(private);
756 * Test whether the default rand_method (RAND_OpenSSL()) is
757 * setup correctly, in particular whether reseeding works
760 static int test_rand_drbg_reseed(void)
762 RAND_DRBG
*master
, *public, *private;
763 unsigned char rand_add_buf
[256];
765 time_t before_reseed
;
767 /* Check whether RAND_OpenSSL() is the default method */
768 if (!TEST_ptr_eq(RAND_get_rand_method(), RAND_OpenSSL()))
771 /* All three DRBGs should be non-null */
772 if (!TEST_ptr(master
= RAND_DRBG_get0_master())
773 || !TEST_ptr(public = RAND_DRBG_get0_public())
774 || !TEST_ptr(private = RAND_DRBG_get0_private()))
777 /* There should be three distinct DRBGs, two of them chained to master */
778 if (!TEST_ptr_ne(public, private)
779 || !TEST_ptr_ne(public, master
)
780 || !TEST_ptr_ne(private, master
)
781 || !TEST_ptr_eq(public->parent
, master
)
782 || !TEST_ptr_eq(private->parent
, master
))
785 /* Disable CRNG testing for the master DRBG */
786 if (!TEST_true(disable_crngt(master
)))
789 /* uninstantiate the three global DRBGs */
790 RAND_DRBG_uninstantiate(private);
791 RAND_DRBG_uninstantiate(public);
792 RAND_DRBG_uninstantiate(master
);
795 /* Install hooks for the following tests */
796 hook_drbg(master
, &master_ctx
);
797 hook_drbg(public, &public_ctx
);
798 hook_drbg(private, &private_ctx
);
802 * Test initial seeding of shared DRBGs
804 if (!TEST_true(test_drbg_reseed(1, master
, public, private, 1, 1, 1, 0)))
806 reset_drbg_hook_ctx();
810 * Test initial state of shared DRBGs
812 if (!TEST_true(test_drbg_reseed(1, master
, public, private, 0, 0, 0, 0)))
814 reset_drbg_hook_ctx();
817 * Test whether the public and private DRBG are both reseeded when their
818 * reseed counters differ from the master's reseed counter.
820 master
->reseed_prop_counter
++;
821 if (!TEST_true(test_drbg_reseed(1, master
, public, private, 0, 1, 1, 0)))
823 reset_drbg_hook_ctx();
826 * Test whether the public DRBG is reseeded when its reseed counter differs
827 * from the master's reseed counter.
829 master
->reseed_prop_counter
++;
830 private->reseed_prop_counter
++;
831 if (!TEST_true(test_drbg_reseed(1, master
, public, private, 0, 1, 0, 0)))
833 reset_drbg_hook_ctx();
836 * Test whether the private DRBG is reseeded when its reseed counter differs
837 * from the master's reseed counter.
839 master
->reseed_prop_counter
++;
840 public->reseed_prop_counter
++;
841 if (!TEST_true(test_drbg_reseed(1, master
, public, private, 0, 0, 1, 0)))
843 reset_drbg_hook_ctx();
845 #if defined(OPENSSL_SYS_UNIX)
846 if (!TEST_true(test_drbg_reseed_after_fork(master
, public, private)))
850 /* fill 'randomness' buffer with some arbitrary data */
851 memset(rand_add_buf
, 'r', sizeof(rand_add_buf
));
855 * Test whether all three DRBGs are reseeded by RAND_add().
856 * The before_reseed time has to be measured here and passed into the
857 * test_drbg_reseed() test, because the master DRBG gets already reseeded
858 * in RAND_add(), whence the check for the condition
859 * before_reseed <= master->reseed_time will fail if the time value happens
860 * to increase between the RAND_add() and the test_drbg_reseed() call.
862 before_reseed
= time(NULL
);
863 RAND_add(rand_add_buf
, sizeof(rand_add_buf
), sizeof(rand_add_buf
));
864 if (!TEST_true(test_drbg_reseed(1, master
, public, private, 1, 1, 1,
867 reset_drbg_hook_ctx();
871 * Test whether none of the DRBGs is reseed if the master fails to reseed
874 master
->reseed_prop_counter
++;
875 RAND_add(rand_add_buf
, sizeof(rand_add_buf
), sizeof(rand_add_buf
));
876 if (!TEST_true(test_drbg_reseed(0, master
, public, private, 0, 0, 0, 0)))
878 reset_drbg_hook_ctx();
879 #else /* FIPS_MODE */
881 * In FIPS mode, random data provided by the application via RAND_add()
882 * is not considered a trusted entropy source. It is only treated as
883 * additional_data and no reseeding is forced. This test assures that
884 * no reseeding occurs.
886 before_reseed
= time(NULL
);
887 RAND_add(rand_add_buf
, sizeof(rand_add_buf
), sizeof(rand_add_buf
));
888 if (!TEST_true(test_drbg_reseed(1, master
, public, private, 0, 0, 0,
891 reset_drbg_hook_ctx();
900 unhook_drbg(private);
905 #if defined(OPENSSL_THREADS)
906 static int multi_thread_rand_bytes_succeeded
= 1;
907 static int multi_thread_rand_priv_bytes_succeeded
= 1;
909 static void run_multi_thread_test(void)
911 unsigned char buf
[256];
912 time_t start
= time(NULL
);
913 RAND_DRBG
*public = NULL
, *private = NULL
;
915 if (!TEST_ptr(public = RAND_DRBG_get0_public())
916 || !TEST_ptr(private = RAND_DRBG_get0_private())) {
917 multi_thread_rand_bytes_succeeded
= 0;
920 RAND_DRBG_set_reseed_time_interval(private, 1);
921 RAND_DRBG_set_reseed_time_interval(public, 1);
924 if (RAND_bytes(buf
, sizeof(buf
)) <= 0)
925 multi_thread_rand_bytes_succeeded
= 0;
926 if (RAND_priv_bytes(buf
, sizeof(buf
)) <= 0)
927 multi_thread_rand_priv_bytes_succeeded
= 0;
929 while(time(NULL
) - start
< 5);
932 # if defined(OPENSSL_SYS_WINDOWS)
934 typedef HANDLE thread_t
;
936 static DWORD WINAPI
thread_run(LPVOID arg
)
938 run_multi_thread_test();
940 * Because we're linking with a static library, we must stop each
941 * thread explicitly, or so says OPENSSL_thread_stop(3)
943 OPENSSL_thread_stop();
947 static int run_thread(thread_t
*t
)
949 *t
= CreateThread(NULL
, 0, thread_run
, NULL
, 0, NULL
);
953 static int wait_for_thread(thread_t thread
)
955 return WaitForSingleObject(thread
, INFINITE
) == 0;
960 typedef pthread_t thread_t
;
962 static void *thread_run(void *arg
)
964 run_multi_thread_test();
966 * Because we're linking with a static library, we must stop each
967 * thread explicitly, or so says OPENSSL_thread_stop(3)
969 OPENSSL_thread_stop();
973 static int run_thread(thread_t
*t
)
975 return pthread_create(t
, NULL
, thread_run
, NULL
) == 0;
978 static int wait_for_thread(thread_t thread
)
980 return pthread_join(thread
, NULL
) == 0;
986 * The main thread will also run the test, so we'll have THREADS+1 parallel
991 static int test_multi_thread(void)
996 for (i
= 0; i
< THREADS
; i
++)
998 run_multi_thread_test();
999 for (i
= 0; i
< THREADS
; i
++)
1000 wait_for_thread(t
[i
]);
1002 if (!TEST_true(multi_thread_rand_bytes_succeeded
))
1004 if (!TEST_true(multi_thread_rand_priv_bytes_succeeded
))
1012 * Test that instantiation with RAND_seed() works as expected
1014 * If no os entropy source is available then RAND_seed(buffer, bufsize)
1015 * is expected to succeed if and only if the buffer length is at least
1016 * rand_drbg_seedlen(master) bytes.
1018 * If an os entropy source is available then RAND_seed(buffer, bufsize)
1019 * is expected to succeed always.
1021 static int test_rand_seed(void)
1023 RAND_DRBG
*master
= NULL
;
1024 unsigned char rand_buf
[256];
1026 size_t required_seed_buflen
= 0;
1028 if (!TEST_ptr(master
= RAND_DRBG_get0_master())
1029 || !TEST_true(disable_crngt(master
)))
1032 #ifdef OPENSSL_RAND_SEED_NONE
1033 required_seed_buflen
= rand_drbg_seedlen(master
);
1036 memset(rand_buf
, 0xCD, sizeof(rand_buf
));
1038 for ( rand_buflen
= 256 ; rand_buflen
> 0 ; --rand_buflen
) {
1039 RAND_DRBG_uninstantiate(master
);
1040 RAND_seed(rand_buf
, rand_buflen
);
1042 if (!TEST_int_eq(RAND_status(),
1043 (rand_buflen
>= required_seed_buflen
)))
1051 * Test that adding additional data with RAND_add() works as expected
1052 * when the master DRBG is instantiated (and below its reseed limit).
1054 * This should succeed regardless of whether an os entropy source is
1057 static int test_rand_add(void)
1059 unsigned char rand_buf
[256];
1062 memset(rand_buf
, 0xCD, sizeof(rand_buf
));
1064 /* make sure it's instantiated */
1065 RAND_seed(rand_buf
, sizeof(rand_buf
));
1066 if (!TEST_true(RAND_status()))
1069 for ( rand_buflen
= 256 ; rand_buflen
> 0 ; --rand_buflen
) {
1070 RAND_add(rand_buf
, rand_buflen
, 0.0);
1071 if (!TEST_true(RAND_status()))
1078 static int test_rand_drbg_prediction_resistance(void)
1080 RAND_DRBG
*m
= NULL
, *i
= NULL
, *s
= NULL
;
1081 unsigned char buf1
[51], buf2
[sizeof(buf1
)];
1082 int ret
= 0, mreseed
, ireseed
, sreseed
;
1084 /* Initialise a three long DRBG chain */
1085 if (!TEST_ptr(m
= RAND_DRBG_new(0, 0, NULL
))
1086 || !TEST_true(disable_crngt(m
))
1087 || !TEST_true(RAND_DRBG_instantiate(m
, NULL
, 0))
1088 || !TEST_ptr(i
= RAND_DRBG_new(0, 0, m
))
1089 || !TEST_true(RAND_DRBG_instantiate(i
, NULL
, 0))
1090 || !TEST_ptr(s
= RAND_DRBG_new(0, 0, i
))
1091 || !TEST_true(RAND_DRBG_instantiate(s
, NULL
, 0)))
1094 /* During a normal reseed, only the slave DRBG should be reseed */
1095 mreseed
= ++m
->reseed_prop_counter
;
1096 ireseed
= ++i
->reseed_prop_counter
;
1097 sreseed
= s
->reseed_prop_counter
;
1098 if (!TEST_true(RAND_DRBG_reseed(s
, NULL
, 0, 0))
1099 || !TEST_int_eq(m
->reseed_prop_counter
, mreseed
)
1100 || !TEST_int_eq(i
->reseed_prop_counter
, ireseed
)
1101 || !TEST_int_gt(s
->reseed_prop_counter
, sreseed
))
1105 * When prediction resistance is requested, the request should be
1106 * propagated to the master, so that the entire DRBG chain reseeds.
1108 sreseed
= s
->reseed_prop_counter
;
1109 if (!TEST_true(RAND_DRBG_reseed(s
, NULL
, 0, 1))
1110 || !TEST_int_gt(m
->reseed_prop_counter
, mreseed
)
1111 || !TEST_int_gt(i
->reseed_prop_counter
, ireseed
)
1112 || !TEST_int_gt(s
->reseed_prop_counter
, sreseed
))
1115 /* During a normal generate, only the slave DRBG should be reseed */
1116 mreseed
= ++m
->reseed_prop_counter
;
1117 ireseed
= ++i
->reseed_prop_counter
;
1118 sreseed
= s
->reseed_prop_counter
;
1119 if (!TEST_true(RAND_DRBG_generate(s
, buf1
, sizeof(buf1
), 0, NULL
, 0))
1120 || !TEST_int_eq(m
->reseed_prop_counter
, mreseed
)
1121 || !TEST_int_eq(i
->reseed_prop_counter
, ireseed
)
1122 || !TEST_int_gt(s
->reseed_prop_counter
, sreseed
))
1126 * When a prediction resistant generate is requested, the request
1127 * should be propagated to the master, reseeding the entire DRBG chain.
1129 sreseed
= s
->reseed_prop_counter
;
1130 if (!TEST_true(RAND_DRBG_generate(s
, buf2
, sizeof(buf2
), 1, NULL
, 0))
1131 || !TEST_int_gt(m
->reseed_prop_counter
, mreseed
)
1132 || !TEST_int_gt(i
->reseed_prop_counter
, ireseed
)
1133 || !TEST_int_gt(s
->reseed_prop_counter
, sreseed
)
1134 || !TEST_mem_ne(buf1
, sizeof(buf1
), buf2
, sizeof(buf2
)))
1137 /* Verify that a normal reseed still only reseeds the slave DRBG */
1138 mreseed
= ++m
->reseed_prop_counter
;
1139 ireseed
= ++i
->reseed_prop_counter
;
1140 sreseed
= s
->reseed_prop_counter
;
1141 if (!TEST_true(RAND_DRBG_reseed(s
, NULL
, 0, 0))
1142 || !TEST_int_eq(m
->reseed_prop_counter
, mreseed
)
1143 || !TEST_int_eq(i
->reseed_prop_counter
, ireseed
)
1144 || !TEST_int_gt(s
->reseed_prop_counter
, sreseed
))
1155 static int test_multi_set(void)
1158 RAND_DRBG
*drbg
= NULL
;
1160 /* init drbg with default CTR initializer */
1161 if (!TEST_ptr(drbg
= RAND_DRBG_new(0, 0, NULL
))
1162 || !TEST_true(disable_crngt(drbg
)))
1164 /* change it to use hmac */
1165 if (!TEST_true(RAND_DRBG_set(drbg
, NID_sha1
, RAND_DRBG_FLAG_HMAC
)))
1168 if (!TEST_true(RAND_DRBG_set(drbg
, NID_sha1
, RAND_DRBG_FLAG_HMAC
)))
1170 /* change it to use hash */
1171 if (!TEST_true(RAND_DRBG_set(drbg
, NID_sha256
, 0)))
1174 if (!TEST_true(RAND_DRBG_set(drbg
, NID_sha256
, 0)))
1176 /* change it to use ctr */
1177 if (!TEST_true(RAND_DRBG_set(drbg
, NID_aes_192_ctr
, 0)))
1180 if (!TEST_true(RAND_DRBG_set(drbg
, NID_aes_192_ctr
, 0)))
1182 if (!TEST_int_gt(RAND_DRBG_instantiate(drbg
, NULL
, 0), 0))
1187 uninstantiate(drbg
);
1188 RAND_DRBG_free(drbg
);
1192 static int test_set_defaults(void)
1194 RAND_DRBG
*master
= NULL
, *public = NULL
, *private = NULL
;
1196 /* Check the default type and flags for master, public and private */
1197 return TEST_ptr(master
= RAND_DRBG_get0_master())
1198 && TEST_ptr(public = RAND_DRBG_get0_public())
1199 && TEST_ptr(private = RAND_DRBG_get0_private())
1200 && TEST_int_eq(master
->type
, RAND_DRBG_TYPE
)
1201 && TEST_int_eq(master
->flags
,
1202 RAND_DRBG_FLAGS
| RAND_DRBG_FLAG_MASTER
)
1203 && TEST_int_eq(public->type
, RAND_DRBG_TYPE
)
1204 && TEST_int_eq(public->flags
,
1205 RAND_DRBG_FLAGS
| RAND_DRBG_FLAG_PUBLIC
)
1206 && TEST_int_eq(private->type
, RAND_DRBG_TYPE
)
1207 && TEST_int_eq(private->flags
,
1208 RAND_DRBG_FLAGS
| RAND_DRBG_FLAG_PRIVATE
)
1210 /* change master DRBG and check again */
1211 && TEST_true(RAND_DRBG_set_defaults(NID_sha256
,
1212 RAND_DRBG_FLAG_MASTER
))
1213 && TEST_true(RAND_DRBG_uninstantiate(master
))
1214 && TEST_int_eq(master
->type
, NID_sha256
)
1215 && TEST_int_eq(master
->flags
, RAND_DRBG_FLAG_MASTER
)
1216 && TEST_int_eq(public->type
, RAND_DRBG_TYPE
)
1217 && TEST_int_eq(public->flags
,
1218 RAND_DRBG_FLAGS
| RAND_DRBG_FLAG_PUBLIC
)
1219 && TEST_int_eq(private->type
, RAND_DRBG_TYPE
)
1220 && TEST_int_eq(private->flags
,
1221 RAND_DRBG_FLAGS
| RAND_DRBG_FLAG_PRIVATE
)
1222 /* change private DRBG and check again */
1223 && TEST_true(RAND_DRBG_set_defaults(NID_sha256
,
1224 RAND_DRBG_FLAG_PRIVATE
|RAND_DRBG_FLAG_HMAC
))
1225 && TEST_true(RAND_DRBG_uninstantiate(private))
1226 && TEST_int_eq(master
->type
, NID_sha256
)
1227 && TEST_int_eq(master
->flags
, RAND_DRBG_FLAG_MASTER
)
1228 && TEST_int_eq(public->type
, RAND_DRBG_TYPE
)
1229 && TEST_int_eq(public->flags
,
1230 RAND_DRBG_FLAGS
| RAND_DRBG_FLAG_PUBLIC
)
1231 && TEST_int_eq(private->type
, NID_sha256
)
1232 && TEST_int_eq(private->flags
,
1233 RAND_DRBG_FLAG_PRIVATE
| RAND_DRBG_FLAG_HMAC
)
1234 /* change public DRBG and check again */
1235 && TEST_true(RAND_DRBG_set_defaults(NID_sha1
,
1236 RAND_DRBG_FLAG_PUBLIC
1237 | RAND_DRBG_FLAG_HMAC
))
1238 && TEST_true(RAND_DRBG_uninstantiate(public))
1239 && TEST_int_eq(master
->type
, NID_sha256
)
1240 && TEST_int_eq(master
->flags
, RAND_DRBG_FLAG_MASTER
)
1241 && TEST_int_eq(public->type
, NID_sha1
)
1242 && TEST_int_eq(public->flags
,
1243 RAND_DRBG_FLAG_PUBLIC
| RAND_DRBG_FLAG_HMAC
)
1244 && TEST_int_eq(private->type
, NID_sha256
)
1245 && TEST_int_eq(private->flags
,
1246 RAND_DRBG_FLAG_PRIVATE
| RAND_DRBG_FLAG_HMAC
)
1247 /* Change DRBG defaults and change public and check again */
1248 && TEST_true(RAND_DRBG_set_defaults(NID_sha256
, 0))
1249 && TEST_true(RAND_DRBG_uninstantiate(public))
1250 && TEST_int_eq(public->type
, NID_sha256
)
1251 && TEST_int_eq(public->flags
, RAND_DRBG_FLAG_PUBLIC
)
1253 /* FIPS mode doesn't support CTR DRBG without a derivation function */
1255 /* Change DRBG defaults and change master and check again */
1256 && TEST_true(RAND_DRBG_set_defaults(NID_aes_256_ctr
,
1257 RAND_DRBG_FLAG_CTR_NO_DF
))
1258 && TEST_true(RAND_DRBG_uninstantiate(master
))
1259 && TEST_int_eq(master
->type
, NID_aes_256_ctr
)
1260 && TEST_int_eq(master
->flags
,
1261 RAND_DRBG_FLAG_MASTER
|RAND_DRBG_FLAG_CTR_NO_DF
)
1263 /* Reset back to the standard defaults */
1264 && TEST_true(RAND_DRBG_set_defaults(RAND_DRBG_TYPE
,
1266 | RAND_DRBG_FLAG_MASTER
1267 | RAND_DRBG_FLAG_PUBLIC
1268 | RAND_DRBG_FLAG_PRIVATE
))
1269 && TEST_true(RAND_DRBG_uninstantiate(master
))
1270 && TEST_true(RAND_DRBG_uninstantiate(public))
1271 && TEST_true(RAND_DRBG_uninstantiate(private));
1275 * A list of the FIPS DRGB types.
1276 * Because of the way HMAC DRGBs are implemented, both the NID and flags
1279 static const struct s_drgb_types
{
1283 { NID_aes_128_ctr
, 0 },
1284 { NID_aes_192_ctr
, 0 },
1285 { NID_aes_256_ctr
, 0 },
1291 { NID_sha512_224
, 0 },
1292 { NID_sha512_256
, 0 },
1293 { NID_sha3_224
, 0 },
1294 { NID_sha3_256
, 0 },
1295 { NID_sha3_384
, 0 },
1296 { NID_sha3_512
, 0 },
1297 { NID_sha1
, RAND_DRBG_FLAG_HMAC
},
1298 { NID_sha224
, RAND_DRBG_FLAG_HMAC
},
1299 { NID_sha256
, RAND_DRBG_FLAG_HMAC
},
1300 { NID_sha384
, RAND_DRBG_FLAG_HMAC
},
1301 { NID_sha512
, RAND_DRBG_FLAG_HMAC
},
1302 { NID_sha512_224
, RAND_DRBG_FLAG_HMAC
},
1303 { NID_sha512_256
, RAND_DRBG_FLAG_HMAC
},
1304 { NID_sha3_224
, RAND_DRBG_FLAG_HMAC
},
1305 { NID_sha3_256
, RAND_DRBG_FLAG_HMAC
},
1306 { NID_sha3_384
, RAND_DRBG_FLAG_HMAC
},
1307 { NID_sha3_512
, RAND_DRBG_FLAG_HMAC
},
1310 /* Six cases for each covers seed sizes up to 32 bytes */
1311 static const size_t crngt_num_cases
= 6;
1313 static size_t crngt_case
, crngt_idx
;
1315 static int crngt_entropy_cb(OPENSSL_CTX
*ctx
, RAND_POOL
*pool
,
1316 unsigned char *buf
, unsigned char *md
,
1317 unsigned int *md_size
)
1321 if (!TEST_int_lt(crngt_idx
, crngt_num_cases
))
1323 /* Generate a block of unique data unless this is the duplication point */
1325 if (z
> 0 && crngt_case
== z
)
1327 for (i
= 0; i
< CRNGT_BUFSIZ
; i
++)
1328 buf
[i
] = (unsigned char)(i
+ 'A' + z
);
1329 return EVP_Digest(buf
, CRNGT_BUFSIZ
, md
, md_size
, EVP_sha256(), NULL
);
1332 static int test_crngt(int n
)
1334 const struct s_drgb_types
*dt
= drgb_types
+ n
/ crngt_num_cases
;
1335 RAND_DRBG
*drbg
= NULL
;
1336 unsigned char buff
[100];
1340 OPENSSL_CTX
*ctx
= OPENSSL_CTX_new();
1344 if (!TEST_ptr(drbg
= RAND_DRBG_new_ex(ctx
, dt
->nid
, dt
->flags
, NULL
)))
1346 ent
= (drbg
->min_entropylen
+ CRNGT_BUFSIZ
- 1) / CRNGT_BUFSIZ
;
1347 crngt_case
= n
% crngt_num_cases
;
1349 crngt_get_entropy
= &crngt_entropy_cb
;
1351 if (!TEST_true(RAND_DRBG_set_callbacks(drbg
, &rand_crngt_get_entropy
,
1352 &rand_crngt_cleanup_entropy
,
1353 &rand_drbg_get_nonce
,
1354 &rand_drbg_cleanup_nonce
)))
1357 expect
= crngt_case
== 0 || crngt_case
> ent
;
1358 if (!TEST_int_eq(RAND_DRBG_instantiate(drbg
, NULL
, 0), expect
))
1362 if (!TEST_true(RAND_DRBG_generate(drbg
, buff
, sizeof(buff
), 0, NULL
, 0)))
1365 expect
= crngt_case
== 0 || crngt_case
> 2 * ent
;
1366 if (!TEST_int_eq(RAND_DRBG_reseed(drbg
, NULL
, 0, 0), expect
))
1370 if (!TEST_true(RAND_DRBG_generate(drbg
, buff
, sizeof(buff
), 0, NULL
, 0)))
1377 TEST_note("DRBG %zd case %zd block %zd", n
/ crngt_num_cases
,
1378 crngt_case
, crngt_idx
);
1379 uninstantiate(drbg
);
1380 RAND_DRBG_free(drbg
);
1381 crngt_get_entropy
= &rand_crngt_get_entropy_cb
;
1382 OPENSSL_CTX_free(ctx
);
1386 int setup_tests(void)
1388 ADD_ALL_TESTS(test_kats
, OSSL_NELEM(drbg_test
));
1389 ADD_ALL_TESTS(test_error_checks
, OSSL_NELEM(drbg_test
));
1390 ADD_TEST(test_rand_drbg_reseed
);
1391 ADD_TEST(test_rand_seed
);
1392 ADD_TEST(test_rand_add
);
1393 ADD_TEST(test_rand_drbg_prediction_resistance
);
1394 ADD_TEST(test_multi_set
);
1395 ADD_TEST(test_set_defaults
);
1396 #if defined(OPENSSL_THREADS)
1397 ADD_TEST(test_multi_thread
);
1399 ADD_ALL_TESTS(test_crngt
, crngt_num_cases
* OSSL_NELEM(drgb_types
));