/*
* Copyright 2011-2018 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
#define make_drbg_test_data_no_df(nid, pr, p) \
make_drbg_test_data(nid, RAND_DRBG_FLAG_CTR_NO_DF, pr, p)
+#define make_drbg_test_data_hash(nid, pr, p) \
+ make_drbg_test_data(nid, RAND_DRBG_FLAG_HMAC, hmac_##pr, p), \
+ make_drbg_test_data(nid, 0, pr, p)
+
static DRBG_SELFTEST_DATA drbg_test[] = {
+#ifndef FIPS_MODE
+ /* FIPS mode doesn't support CTR DRBG without a derivation function */
make_drbg_test_data_no_df (NID_aes_128_ctr, aes_128_no_df, 0),
make_drbg_test_data_no_df (NID_aes_192_ctr, aes_192_no_df, 0),
make_drbg_test_data_no_df (NID_aes_256_ctr, aes_256_no_df, 1),
+#endif
make_drbg_test_data_use_df(NID_aes_128_ctr, aes_128_use_df, 0),
make_drbg_test_data_use_df(NID_aes_192_ctr, aes_192_use_df, 0),
make_drbg_test_data_use_df(NID_aes_256_ctr, aes_256_use_df, 1),
+ make_drbg_test_data_hash(NID_sha1, sha1, 0),
+ make_drbg_test_data_hash(NID_sha224, sha224, 0),
+ make_drbg_test_data_hash(NID_sha256, sha256, 1),
+ make_drbg_test_data_hash(NID_sha384, sha384, 0),
+ make_drbg_test_data_hash(NID_sha512, sha512, 0),
};
static int app_data_index;
return t->noncelen;
}
+ /*
+ * Disable CRNG testing if it is enabled.
+ * If the DRBG is ready or in an error state, this means an instantiate cycle
+ * for which the default personalisation string is used.
+ */
+static int disable_crngt(RAND_DRBG *drbg)
+{
+ static const char pers[] = DRBG_DEFAULT_PERS_STRING;
+ const int instantiate = drbg->state != DRBG_UNINITIALISED;
+
+ if (drbg->get_entropy != rand_crngt_get_entropy)
+ return 1;
+
+ if ((instantiate && !RAND_DRBG_uninstantiate(drbg))
+ || !TEST_true(RAND_DRBG_set_callbacks(drbg, &rand_drbg_get_entropy,
+ &rand_drbg_cleanup_entropy,
+ &rand_drbg_get_nonce,
+ &rand_drbg_cleanup_nonce))
+ || (instantiate
+ && !RAND_DRBG_instantiate(drbg, (const unsigned char *)pers,
+ sizeof(pers) - 1)))
+ return 0;
+ return 1;
+}
+
static int uninstantiate(RAND_DRBG *drbg)
{
int ret = drbg == NULL ? 1 : RAND_DRBG_uninstantiate(drbg);
if (!TEST_ptr(drbg = RAND_DRBG_new(td->nid, td->flags, NULL)))
return 0;
if (!TEST_true(RAND_DRBG_set_callbacks(drbg, kat_entropy, NULL,
- kat_nonce, NULL))) {
+ kat_nonce, NULL))
+ || !TEST_true(disable_crngt(drbg))) {
failures++;
goto err;
}
RAND_DRBG *drbg = NULL;
TEST_CTX t;
unsigned char buff[1024];
- unsigned int generate_counter_tmp;
+ unsigned int reseed_counter_tmp;
int ret = 0;
- if (!TEST_ptr(drbg = RAND_DRBG_new(0, 0, NULL)))
+ if (!TEST_ptr(drbg = RAND_DRBG_new(td->nid, td->flags, NULL))
+ || !TEST_true(disable_crngt(drbg)))
goto err;
/*
* Entropy source tests
*/
- /* Test entropy source failure detecion: i.e. returns no data */
+ /* Test entropy source failure detection: i.e. returns no data */
t.entropylen = 0;
if (TEST_int_le(RAND_DRBG_instantiate(drbg, td->pers, td->perslen), 0))
goto err;
/* Instantiate again with valid data */
if (!instantiate(drbg, td, &t))
goto err;
- generate_counter_tmp = drbg->generate_counter;
- drbg->generate_counter = drbg->reseed_interval;
+ reseed_counter_tmp = drbg->reseed_gen_counter;
+ drbg->reseed_gen_counter = drbg->reseed_interval;
/* Generate output and check entropy has been requested for reseed */
t.entropycnt = 0;
if (!TEST_true(RAND_DRBG_generate(drbg, buff, td->exlen, 0,
td->adin, td->adinlen))
|| !TEST_int_eq(t.entropycnt, 1)
- || !TEST_int_eq(drbg->generate_counter, generate_counter_tmp + 1)
+ || !TEST_int_eq(drbg->reseed_gen_counter, reseed_counter_tmp + 1)
|| !uninstantiate(drbg))
goto err;
/* Test reseed counter works */
if (!instantiate(drbg, td, &t))
goto err;
- generate_counter_tmp = drbg->generate_counter;
- drbg->generate_counter = drbg->reseed_interval;
+ reseed_counter_tmp = drbg->reseed_gen_counter;
+ drbg->reseed_gen_counter = drbg->reseed_interval;
/* Generate output and check entropy has been requested for reseed */
t.entropycnt = 0;
if (!TEST_true(RAND_DRBG_generate(drbg, buff, td->exlen, 0,
td->adin, td->adinlen))
|| !TEST_int_eq(t.entropycnt, 1)
- || !TEST_int_eq(drbg->generate_counter, generate_counter_tmp + 1)
+ || !TEST_int_eq(drbg->reseed_gen_counter, reseed_counter_tmp + 1)
|| !uninstantiate(drbg))
goto err;
*/
/* Test explicit reseed with too large additional input */
- if (!init(drbg, td, &t)
+ if (!instantiate(drbg, td, &t)
|| RAND_DRBG_reseed(drbg, td->adin, drbg->max_adinlen + 1, 0) > 0)
goto err;
goto err;
/* Test explicit reseed with too much entropy */
- if (!init(drbg, td, &t))
+ if (!instantiate(drbg, td, &t))
goto err;
t.entropylen = drbg->max_entropylen + 1;
if (!TEST_int_le(RAND_DRBG_reseed(drbg, td->adin, td->adinlen, 0), 0)
goto err;
/* Test explicit reseed with too little entropy */
- if (!init(drbg, td, &t))
+ if (!instantiate(drbg, td, &t))
goto err;
t.entropylen = drbg->min_entropylen - 1;
if (!TEST_int_le(RAND_DRBG_reseed(drbg, td->adin, td->adinlen, 0), 0)
}
/* Resets all drbg hook contexts */
-static void reset_drbg_hook_ctx()
+static void reset_drbg_hook_ctx(void)
{
reset_hook_ctx(&master_ctx);
reset_hook_ctx(&public_ctx);
* 1: it is expected that the specified DRBG is reseeded
* 0: it is expected that the specified DRBG is not reseeded
* -1: don't check whether the specified DRBG was reseeded or not
+ * |reseed_time|: if nonzero, used instead of time(NULL) to set the
+ * |before_reseed| time.
*/
static int test_drbg_reseed(int expect_success,
RAND_DRBG *master,
RAND_DRBG *private,
int expect_master_reseed,
int expect_public_reseed,
- int expect_private_reseed
+ int expect_private_reseed,
+ time_t reseed_time
)
{
unsigned char buf[32];
*/
/* Test whether seed propagation is enabled */
- if (!TEST_int_ne(master->reseed_counter, 0)
- || !TEST_int_ne(public->reseed_counter, 0)
- || !TEST_int_ne(private->reseed_counter, 0))
+ if (!TEST_int_ne(master->reseed_prop_counter, 0)
+ || !TEST_int_ne(public->reseed_prop_counter, 0)
+ || !TEST_int_ne(private->reseed_prop_counter, 0))
return 0;
/* Check whether the master DRBG's reseed counter is the largest one */
- if (!TEST_int_le(public->reseed_counter, master->reseed_counter)
- || !TEST_int_le(private->reseed_counter, master->reseed_counter))
+ if (!TEST_int_le(public->reseed_prop_counter, master->reseed_prop_counter)
+ || !TEST_int_le(private->reseed_prop_counter, master->reseed_prop_counter))
return 0;
/*
* step 2: generate random output
*/
+ if (reseed_time == 0)
+ reseed_time = time(NULL);
+
/* Generate random output from the public and private DRBG */
- before_reseed = expect_master_reseed == 1 ? time(NULL) : 0;
+ before_reseed = expect_master_reseed == 1 ? reseed_time : 0;
if (!TEST_int_eq(RAND_bytes(buf, sizeof(buf)), expect_success)
|| !TEST_int_eq(RAND_priv_bytes(buf, sizeof(buf)), expect_success))
return 0;
if (expect_success == 1) {
/* Test whether all three reseed counters are synchronized */
- if (!TEST_int_eq(public->reseed_counter, master->reseed_counter)
- || !TEST_int_eq(private->reseed_counter, master->reseed_counter))
+ if (!TEST_int_eq(public->reseed_prop_counter, master->reseed_prop_counter)
+ || !TEST_int_eq(private->reseed_prop_counter, master->reseed_prop_counter))
return 0;
/* Test whether reseed time of master DRBG is set correctly */
* setup correctly, in particular whether reseeding works
* as designed.
*/
-static int test_rand_reseed(void)
+static int test_rand_drbg_reseed(void)
{
RAND_DRBG *master, *public, *private;
unsigned char rand_add_buf[256];
int rv=0;
+ time_t before_reseed;
/* Check whether RAND_OpenSSL() is the default method */
if (!TEST_ptr_eq(RAND_get_rand_method(), RAND_OpenSSL()))
|| !TEST_ptr_eq(private->parent, master))
return 0;
+ /* Disable CRNG testing for the master DRBG */
+ if (!TEST_true(disable_crngt(master)))
+ return 0;
+
/* uninstantiate the three global DRBGs */
RAND_DRBG_uninstantiate(private);
RAND_DRBG_uninstantiate(public);
/*
* Test initial seeding of shared DRBGs
*/
- if (!TEST_true(test_drbg_reseed(1, master, public, private, 1, 1, 1)))
+ if (!TEST_true(test_drbg_reseed(1, master, public, private, 1, 1, 1, 0)))
goto error;
reset_drbg_hook_ctx();
/*
* Test initial state of shared DRBGs
*/
- if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 0, 0)))
+ if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 0, 0, 0)))
goto error;
reset_drbg_hook_ctx();
* Test whether the public and private DRBG are both reseeded when their
* reseed counters differ from the master's reseed counter.
*/
- master->reseed_counter++;
- if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 1, 1)))
+ master->reseed_prop_counter++;
+ if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 1, 1, 0)))
goto error;
reset_drbg_hook_ctx();
* Test whether the public DRBG is reseeded when its reseed counter differs
* from the master's reseed counter.
*/
- master->reseed_counter++;
- private->reseed_counter++;
- if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 1, 0)))
+ master->reseed_prop_counter++;
+ private->reseed_prop_counter++;
+ if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 1, 0, 0)))
goto error;
reset_drbg_hook_ctx();
* Test whether the private DRBG is reseeded when its reseed counter differs
* from the master's reseed counter.
*/
- master->reseed_counter++;
- public->reseed_counter++;
- if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 0, 1)))
+ master->reseed_prop_counter++;
+ public->reseed_prop_counter++;
+ if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 0, 1, 0)))
goto error;
reset_drbg_hook_ctx();
/* fill 'randomness' buffer with some arbitrary data */
memset(rand_add_buf, 'r', sizeof(rand_add_buf));
+#ifndef FIPS_MODE
/*
- * Test whether all three DRBGs are reseeded by RAND_add()
+ * Test whether all three DRBGs are reseeded by RAND_add().
+ * The before_reseed time has to be measured here and passed into the
+ * test_drbg_reseed() test, because the master DRBG gets already reseeded
+ * in RAND_add(), whence the check for the condition
+ * before_reseed <= master->reseed_time will fail if the time value happens
+ * to increase between the RAND_add() and the test_drbg_reseed() call.
*/
+ before_reseed = time(NULL);
RAND_add(rand_add_buf, sizeof(rand_add_buf), sizeof(rand_add_buf));
- if (!TEST_true(test_drbg_reseed(1, master, public, private, 1, 1, 1)))
+ if (!TEST_true(test_drbg_reseed(1, master, public, private, 1, 1, 1,
+ before_reseed)))
goto error;
reset_drbg_hook_ctx();
* Test whether none of the DRBGs is reseed if the master fails to reseed
*/
master_ctx.fail = 1;
- master->reseed_counter++;
+ master->reseed_prop_counter++;
RAND_add(rand_add_buf, sizeof(rand_add_buf), sizeof(rand_add_buf));
- if (!TEST_true(test_drbg_reseed(0, master, public, private, 0, 0, 0)))
+ if (!TEST_true(test_drbg_reseed(0, master, public, private, 0, 0, 0, 0)))
goto error;
reset_drbg_hook_ctx();
+#else /* FIPS_MODE */
+ /*
+ * In FIPS mode, random data provided by the application via RAND_add()
+ * is not considered a trusted entropy source. It is only treated as
+ * additional_data and no reseeding is forced. This test assures that
+ * no reseeding occurs.
+ */
+ before_reseed = time(NULL);
+ RAND_add(rand_add_buf, sizeof(rand_add_buf), sizeof(rand_add_buf));
+ if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 0, 0,
+ before_reseed)))
+ goto error;
+ reset_drbg_hook_ctx();
+#endif
rv = 1;
}
#if defined(OPENSSL_THREADS)
+static int multi_thread_rand_bytes_succeeded = 1;
+static int multi_thread_rand_priv_bytes_succeeded = 1;
static void run_multi_thread_test(void)
{
unsigned char buf[256];
time_t start = time(NULL);
- RAND_DRBG *public, *private;
+ RAND_DRBG *public = NULL, *private = NULL;
- public = RAND_DRBG_get0_public();
- private = RAND_DRBG_get0_private();
- RAND_DRBG_set_reseed_time_interval(public, 1);
+ if (!TEST_ptr(public = RAND_DRBG_get0_public())
+ || !TEST_ptr(private = RAND_DRBG_get0_private())) {
+ multi_thread_rand_bytes_succeeded = 0;
+ return;
+ }
RAND_DRBG_set_reseed_time_interval(private, 1);
+ RAND_DRBG_set_reseed_time_interval(public, 1);
do {
- RAND_bytes(buf, sizeof(buf));
- RAND_priv_bytes(buf, sizeof(buf));
+ if (RAND_bytes(buf, sizeof(buf)) <= 0)
+ multi_thread_rand_bytes_succeeded = 0;
+ if (RAND_priv_bytes(buf, sizeof(buf)) <= 0)
+ multi_thread_rand_priv_bytes_succeeded = 0;
}
while(time(NULL) - start < 5);
}
static DWORD WINAPI thread_run(LPVOID arg)
{
run_multi_thread_test();
+ /*
+ * Because we're linking with a static library, we must stop each
+ * thread explicitly, or so says OPENSSL_thread_stop(3)
+ */
+ OPENSSL_thread_stop();
return 0;
}
static void *thread_run(void *arg)
{
run_multi_thread_test();
+ /*
+ * Because we're linking with a static library, we must stop each
+ * thread explicitly, or so says OPENSSL_thread_stop(3)
+ */
+ OPENSSL_thread_stop();
return NULL;
}
* The main thread will also run the test, so we'll have THREADS+1 parallel
* tests running
*/
-#define THREADS 3
+# define THREADS 3
static int test_multi_thread(void)
{
run_multi_thread_test();
for (i = 0; i < THREADS; i++)
wait_for_thread(t[i]);
+
+ if (!TEST_true(multi_thread_rand_bytes_succeeded))
+ return 0;
+ if (!TEST_true(multi_thread_rand_priv_bytes_succeeded))
+ return 0;
+
return 1;
}
#endif
/*
- * This function only returns the entropy already added with RAND_add(),
- * and does not get entropy from the OS.
+ * Test that instantiation with RAND_seed() works as expected
*
- * Returns 0 on failure and the size of the buffer on success.
+ * If no os entropy source is available then RAND_seed(buffer, bufsize)
+ * is expected to succeed if and only if the buffer length is at least
+ * rand_drbg_seedlen(master) bytes.
+ *
+ * If an os entropy source is available then RAND_seed(buffer, bufsize)
+ * is expected to succeed always.
*/
-static size_t get_pool_entropy(RAND_DRBG *drbg,
- unsigned char **pout,
- int entropy, size_t min_len, size_t max_len,
- int prediction_resistance)
+static int test_rand_seed(void)
{
- if (drbg->pool == NULL)
- return 0;
+ RAND_DRBG *master = NULL;
+ unsigned char rand_buf[256];
+ size_t rand_buflen;
+ size_t required_seed_buflen = 0;
- if (drbg->pool->entropy < (size_t)entropy || drbg->pool->len < min_len
- || drbg->pool->len > max_len)
+ if (!TEST_ptr(master = RAND_DRBG_get0_master())
+ || !TEST_true(disable_crngt(master)))
return 0;
- *pout = drbg->pool->buffer;
- return drbg->pool->len;
+#ifdef OPENSSL_RAND_SEED_NONE
+ required_seed_buflen = rand_drbg_seedlen(master);
+#endif
+
+ memset(rand_buf, 0xCD, sizeof(rand_buf));
+
+ for ( rand_buflen = 256 ; rand_buflen > 0 ; --rand_buflen ) {
+ RAND_DRBG_uninstantiate(master);
+ RAND_seed(rand_buf, rand_buflen);
+
+ if (!TEST_int_eq(RAND_status(),
+ (rand_buflen >= required_seed_buflen)))
+ return 0;
+ }
+
+ return 1;
}
/*
- * Clean up the entropy that get_pool_entropy() returned.
+ * Test that adding additional data with RAND_add() works as expected
+ * when the master DRBG is instantiated (and below its reseed limit).
+ *
+ * This should succeed regardless of whether an os entropy source is
+ * available or not.
*/
-static void cleanup_pool_entropy(RAND_DRBG *drbg, unsigned char *out, size_t outlen)
+static int test_rand_add(void)
{
- OPENSSL_secure_clear_free(drbg->pool->buffer, drbg->pool->max_len);
- OPENSSL_free(drbg->pool);
- drbg->pool = NULL;
+ unsigned char rand_buf[256];
+ size_t rand_buflen;
+
+ memset(rand_buf, 0xCD, sizeof(rand_buf));
+
+ /* make sure it's instantiated */
+ RAND_seed(rand_buf, sizeof(rand_buf));
+ if (!TEST_true(RAND_status()))
+ return 0;
+
+ for ( rand_buflen = 256 ; rand_buflen > 0 ; --rand_buflen ) {
+ RAND_add(rand_buf, rand_buflen, 0.0);
+ if (!TEST_true(RAND_status()))
+ return 0;
+ }
+
+ return 1;
}
-/*
- * Test that instantiating works when OS entropy is not available and that
- * RAND_add() is enough to reseed it.
- */
-static int test_rand_add(void)
+static int test_rand_drbg_prediction_resistance(void)
+{
+ RAND_DRBG *m = NULL, *i = NULL, *s = NULL;
+ unsigned char buf1[51], buf2[sizeof(buf1)];
+ int ret = 0, mreseed, ireseed, sreseed;
+
+ /* Initialise a three long DRBG chain */
+ if (!TEST_ptr(m = RAND_DRBG_new(0, 0, NULL))
+ || !TEST_true(disable_crngt(m))
+ || !TEST_true(RAND_DRBG_instantiate(m, NULL, 0))
+ || !TEST_ptr(i = RAND_DRBG_new(0, 0, m))
+ || !TEST_true(RAND_DRBG_instantiate(i, NULL, 0))
+ || !TEST_ptr(s = RAND_DRBG_new(0, 0, i))
+ || !TEST_true(RAND_DRBG_instantiate(s, NULL, 0)))
+ goto err;
+
+ /* During a normal reseed, only the slave DRBG should be reseed */
+ mreseed = ++m->reseed_prop_counter;
+ ireseed = ++i->reseed_prop_counter;
+ sreseed = s->reseed_prop_counter;
+ if (!TEST_true(RAND_DRBG_reseed(s, NULL, 0, 0))
+ || !TEST_int_eq(m->reseed_prop_counter, mreseed)
+ || !TEST_int_eq(i->reseed_prop_counter, ireseed)
+ || !TEST_int_gt(s->reseed_prop_counter, sreseed))
+ goto err;
+
+ /*
+ * When prediction resistance is requested, the request should be
+ * propagated to the master, so that the entire DRBG chain reseeds.
+ */
+ sreseed = s->reseed_prop_counter;
+ if (!TEST_true(RAND_DRBG_reseed(s, NULL, 0, 1))
+ || !TEST_int_gt(m->reseed_prop_counter, mreseed)
+ || !TEST_int_gt(i->reseed_prop_counter, ireseed)
+ || !TEST_int_gt(s->reseed_prop_counter, sreseed))
+ goto err;
+
+ /* During a normal generate, only the slave DRBG should be reseed */
+ mreseed = ++m->reseed_prop_counter;
+ ireseed = ++i->reseed_prop_counter;
+ sreseed = s->reseed_prop_counter;
+ if (!TEST_true(RAND_DRBG_generate(s, buf1, sizeof(buf1), 0, NULL, 0))
+ || !TEST_int_eq(m->reseed_prop_counter, mreseed)
+ || !TEST_int_eq(i->reseed_prop_counter, ireseed)
+ || !TEST_int_gt(s->reseed_prop_counter, sreseed))
+ goto err;
+
+ /*
+ * When a prediction resistant generate is requested, the request
+ * should be propagated to the master, reseeding the entire DRBG chain.
+ */
+ sreseed = s->reseed_prop_counter;
+ if (!TEST_true(RAND_DRBG_generate(s, buf2, sizeof(buf2), 1, NULL, 0))
+ || !TEST_int_gt(m->reseed_prop_counter, mreseed)
+ || !TEST_int_gt(i->reseed_prop_counter, ireseed)
+ || !TEST_int_gt(s->reseed_prop_counter, sreseed)
+ || !TEST_mem_ne(buf1, sizeof(buf1), buf2, sizeof(buf2)))
+ goto err;
+
+ /* Verify that a normal reseed still only reseeds the slave DRBG */
+ mreseed = ++m->reseed_prop_counter;
+ ireseed = ++i->reseed_prop_counter;
+ sreseed = s->reseed_prop_counter;
+ if (!TEST_true(RAND_DRBG_reseed(s, NULL, 0, 0))
+ || !TEST_int_eq(m->reseed_prop_counter, mreseed)
+ || !TEST_int_eq(i->reseed_prop_counter, ireseed)
+ || !TEST_int_gt(s->reseed_prop_counter, sreseed))
+ goto err;
+
+ ret = 1;
+err:
+ RAND_DRBG_free(s);
+ RAND_DRBG_free(i);
+ RAND_DRBG_free(m);
+ return ret;
+}
+
+static int test_multi_set(void)
{
- RAND_DRBG *master = RAND_DRBG_get0_master();
- RAND_DRBG_get_entropy_fn old_get_entropy = master->get_entropy;
- RAND_DRBG_cleanup_entropy_fn old_cleanup_entropy = master->cleanup_entropy;
int rv = 0;
- unsigned char rand_add_buf[256];
+ RAND_DRBG *drbg = NULL;
- master->get_entropy = get_pool_entropy;
- master->cleanup_entropy = cleanup_pool_entropy;
- master->reseed_counter++;
- RAND_DRBG_uninstantiate(master);
- memset(rand_add_buf, 0xCD, sizeof(rand_add_buf));
- RAND_add(rand_add_buf, sizeof(rand_add_buf), sizeof(rand_add_buf));
- if (!TEST_true(RAND_DRBG_instantiate(master, NULL, 0)))
- goto error;
+ /* init drbg with default CTR initializer */
+ if (!TEST_ptr(drbg = RAND_DRBG_new(0, 0, NULL))
+ || !TEST_true(disable_crngt(drbg)))
+ goto err;
+ /* change it to use hmac */
+ if (!TEST_true(RAND_DRBG_set(drbg, NID_sha1, RAND_DRBG_FLAG_HMAC)))
+ goto err;
+ /* use same type */
+ if (!TEST_true(RAND_DRBG_set(drbg, NID_sha1, RAND_DRBG_FLAG_HMAC)))
+ goto err;
+ /* change it to use hash */
+ if (!TEST_true(RAND_DRBG_set(drbg, NID_sha256, 0)))
+ goto err;
+ /* use same type */
+ if (!TEST_true(RAND_DRBG_set(drbg, NID_sha256, 0)))
+ goto err;
+ /* change it to use ctr */
+ if (!TEST_true(RAND_DRBG_set(drbg, NID_aes_192_ctr, 0)))
+ goto err;
+ /* use same type */
+ if (!TEST_true(RAND_DRBG_set(drbg, NID_aes_192_ctr, 0)))
+ goto err;
+ if (!TEST_int_gt(RAND_DRBG_instantiate(drbg, NULL, 0), 0))
+ goto err;
rv = 1;
-
-error:
- master->get_entropy = old_get_entropy;
- master->cleanup_entropy = old_cleanup_entropy;
+err:
+ uninstantiate(drbg);
+ RAND_DRBG_free(drbg);
return rv;
}
+static int test_set_defaults(void)
+{
+ RAND_DRBG *master = NULL, *public = NULL, *private = NULL;
+
+ /* Check the default type and flags for master, public and private */
+ return TEST_ptr(master = RAND_DRBG_get0_master())
+ && TEST_ptr(public = RAND_DRBG_get0_public())
+ && TEST_ptr(private = RAND_DRBG_get0_private())
+ && TEST_int_eq(master->type, RAND_DRBG_TYPE)
+ && TEST_int_eq(master->flags,
+ RAND_DRBG_FLAGS | RAND_DRBG_FLAG_MASTER)
+ && TEST_int_eq(public->type, RAND_DRBG_TYPE)
+ && TEST_int_eq(public->flags,
+ RAND_DRBG_FLAGS | RAND_DRBG_FLAG_PUBLIC)
+ && TEST_int_eq(private->type, RAND_DRBG_TYPE)
+ && TEST_int_eq(private->flags,
+ RAND_DRBG_FLAGS | RAND_DRBG_FLAG_PRIVATE)
+
+ /* change master DRBG and check again */
+ && TEST_true(RAND_DRBG_set_defaults(NID_sha256,
+ RAND_DRBG_FLAG_MASTER))
+ && TEST_true(RAND_DRBG_uninstantiate(master))
+ && TEST_int_eq(master->type, NID_sha256)
+ && TEST_int_eq(master->flags, RAND_DRBG_FLAG_MASTER)
+ && TEST_int_eq(public->type, RAND_DRBG_TYPE)
+ && TEST_int_eq(public->flags,
+ RAND_DRBG_FLAGS | RAND_DRBG_FLAG_PUBLIC)
+ && TEST_int_eq(private->type, RAND_DRBG_TYPE)
+ && TEST_int_eq(private->flags,
+ RAND_DRBG_FLAGS | RAND_DRBG_FLAG_PRIVATE)
+ /* change private DRBG and check again */
+ && TEST_true(RAND_DRBG_set_defaults(NID_sha256,
+ RAND_DRBG_FLAG_PRIVATE|RAND_DRBG_FLAG_HMAC))
+ && TEST_true(RAND_DRBG_uninstantiate(private))
+ && TEST_int_eq(master->type, NID_sha256)
+ && TEST_int_eq(master->flags, RAND_DRBG_FLAG_MASTER)
+ && TEST_int_eq(public->type, RAND_DRBG_TYPE)
+ && TEST_int_eq(public->flags,
+ RAND_DRBG_FLAGS | RAND_DRBG_FLAG_PUBLIC)
+ && TEST_int_eq(private->type, NID_sha256)
+ && TEST_int_eq(private->flags,
+ RAND_DRBG_FLAG_PRIVATE | RAND_DRBG_FLAG_HMAC)
+ /* change public DRBG and check again */
+ && TEST_true(RAND_DRBG_set_defaults(NID_sha1,
+ RAND_DRBG_FLAG_PUBLIC
+ | RAND_DRBG_FLAG_HMAC))
+ && TEST_true(RAND_DRBG_uninstantiate(public))
+ && TEST_int_eq(master->type, NID_sha256)
+ && TEST_int_eq(master->flags, RAND_DRBG_FLAG_MASTER)
+ && TEST_int_eq(public->type, NID_sha1)
+ && TEST_int_eq(public->flags,
+ RAND_DRBG_FLAG_PUBLIC | RAND_DRBG_FLAG_HMAC)
+ && TEST_int_eq(private->type, NID_sha256)
+ && TEST_int_eq(private->flags,
+ RAND_DRBG_FLAG_PRIVATE | RAND_DRBG_FLAG_HMAC)
+ /* Change DRBG defaults and change public and check again */
+ && TEST_true(RAND_DRBG_set_defaults(NID_sha256, 0))
+ && TEST_true(RAND_DRBG_uninstantiate(public))
+ && TEST_int_eq(public->type, NID_sha256)
+ && TEST_int_eq(public->flags, RAND_DRBG_FLAG_PUBLIC)
+
+ /* FIPS mode doesn't support CTR DRBG without a derivation function */
+#ifndef FIPS_MODE
+ /* Change DRBG defaults and change master and check again */
+ && TEST_true(RAND_DRBG_set_defaults(NID_aes_256_ctr,
+ RAND_DRBG_FLAG_CTR_NO_DF))
+ && TEST_true(RAND_DRBG_uninstantiate(master))
+ && TEST_int_eq(master->type, NID_aes_256_ctr)
+ && TEST_int_eq(master->flags,
+ RAND_DRBG_FLAG_MASTER|RAND_DRBG_FLAG_CTR_NO_DF)
+#endif
+ /* Reset back to the standard defaults */
+ && TEST_true(RAND_DRBG_set_defaults(RAND_DRBG_TYPE,
+ RAND_DRBG_FLAGS
+ | RAND_DRBG_FLAG_MASTER
+ | RAND_DRBG_FLAG_PUBLIC
+ | RAND_DRBG_FLAG_PRIVATE))
+ && TEST_true(RAND_DRBG_uninstantiate(master))
+ && TEST_true(RAND_DRBG_uninstantiate(public))
+ && TEST_true(RAND_DRBG_uninstantiate(private));
+}
+
+/*
+ * A list of the FIPS DRGB types.
+ * Because of the way HMAC DRGBs are implemented, both the NID and flags
+ * are required.
+ */
+static const struct s_drgb_types {
+ int nid;
+ int flags;
+} drgb_types[] = {
+ { NID_aes_128_ctr, 0 },
+ { NID_aes_192_ctr, 0 },
+ { NID_aes_256_ctr, 0 },
+ { NID_sha1, 0 },
+ { NID_sha224, 0 },
+ { NID_sha256, 0 },
+ { NID_sha384, 0 },
+ { NID_sha512, 0 },
+ { NID_sha512_224, 0 },
+ { NID_sha512_256, 0 },
+ { NID_sha3_224, 0 },
+ { NID_sha3_256, 0 },
+ { NID_sha3_384, 0 },
+ { NID_sha3_512, 0 },
+ { NID_sha1, RAND_DRBG_FLAG_HMAC },
+ { NID_sha224, RAND_DRBG_FLAG_HMAC },
+ { NID_sha256, RAND_DRBG_FLAG_HMAC },
+ { NID_sha384, RAND_DRBG_FLAG_HMAC },
+ { NID_sha512, RAND_DRBG_FLAG_HMAC },
+ { NID_sha512_224, RAND_DRBG_FLAG_HMAC },
+ { NID_sha512_256, RAND_DRBG_FLAG_HMAC },
+ { NID_sha3_224, RAND_DRBG_FLAG_HMAC },
+ { NID_sha3_256, RAND_DRBG_FLAG_HMAC },
+ { NID_sha3_384, RAND_DRBG_FLAG_HMAC },
+ { NID_sha3_512, RAND_DRBG_FLAG_HMAC },
+};
+
+/* Six cases for each covers seed sizes up to 32 bytes */
+static const size_t crngt_num_cases = 6;
+
+static size_t crngt_case, crngt_idx;
+
+static int crngt_entropy_cb(OPENSSL_CTX *ctx, unsigned char *buf,
+ unsigned char *md,
+ unsigned int *md_size)
+{
+ size_t i, z;
+
+ if (!TEST_int_lt(crngt_idx, crngt_num_cases))
+ return 0;
+ /* Generate a block of unique data unless this is the duplication point */
+ z = crngt_idx++;
+ if (z > 0 && crngt_case == z)
+ z--;
+ for (i = 0; i < CRNGT_BUFSIZ; i++)
+ buf[i] = (unsigned char)(i + 'A' + z);
+ return EVP_Digest(buf, CRNGT_BUFSIZ, md, md_size, EVP_sha256(), NULL);
+}
+
+static int test_crngt(int n)
+{
+ const struct s_drgb_types *dt = drgb_types + n / crngt_num_cases;
+ RAND_DRBG *drbg = NULL;
+ unsigned char buff[100];
+ size_t ent;
+ int res = 0;
+ int expect;
+ OPENSSL_CTX *ctx = OPENSSL_CTX_new();
+
+ if (!TEST_ptr(ctx))
+ return 0;
+ if (!TEST_ptr(drbg = RAND_DRBG_new_ex(ctx, dt->nid, dt->flags, NULL)))
+ goto err;
+ ent = (drbg->min_entropylen + CRNGT_BUFSIZ - 1) / CRNGT_BUFSIZ;
+ crngt_case = n % crngt_num_cases;
+ crngt_idx = 0;
+ crngt_get_entropy = &crngt_entropy_cb;
+#ifndef FIPS_MODE
+ if (!TEST_true(RAND_DRBG_set_callbacks(drbg, &rand_crngt_get_entropy,
+ &rand_crngt_cleanup_entropy,
+ &rand_drbg_get_nonce,
+ &rand_drbg_cleanup_nonce)))
+ goto err;
+#endif
+ expect = crngt_case == 0 || crngt_case > ent;
+ if (!TEST_int_eq(RAND_DRBG_instantiate(drbg, NULL, 0), expect))
+ goto err;
+ if (!expect)
+ goto fin;
+ if (!TEST_true(RAND_DRBG_generate(drbg, buff, sizeof(buff), 0, NULL, 0)))
+ goto err;
+
+ expect = crngt_case == 0 || crngt_case > 2 * ent;
+ if (!TEST_int_eq(RAND_DRBG_reseed(drbg, NULL, 0, 0), expect))
+ goto err;
+ if (!expect)
+ goto fin;
+ if (!TEST_true(RAND_DRBG_generate(drbg, buff, sizeof(buff), 0, NULL, 0)))
+ goto err;
+
+fin:
+ res = 1;
+err:
+ if (!res)
+ TEST_note("DRBG %zd case %zd block %zd", n / crngt_num_cases,
+ crngt_case, crngt_idx);
+ uninstantiate(drbg);
+ RAND_DRBG_free(drbg);
+ crngt_get_entropy = &rand_crngt_get_entropy_cb;
+ OPENSSL_CTX_free(ctx);
+ return res;
+}
+
int setup_tests(void)
{
app_data_index = RAND_DRBG_get_ex_new_index(0L, NULL, NULL, NULL, NULL);
ADD_ALL_TESTS(test_kats, OSSL_NELEM(drbg_test));
ADD_ALL_TESTS(test_error_checks, OSSL_NELEM(drbg_test));
- ADD_TEST(test_rand_reseed);
+ ADD_TEST(test_rand_drbg_reseed);
+ ADD_TEST(test_rand_seed);
ADD_TEST(test_rand_add);
+ ADD_TEST(test_rand_drbg_prediction_resistance);
+ ADD_TEST(test_multi_set);
+ ADD_TEST(test_set_defaults);
#if defined(OPENSSL_THREADS)
ADD_TEST(test_multi_thread);
#endif
+ ADD_ALL_TESTS(test_crngt, crngt_num_cases * OSSL_NELEM(drgb_types));
return 1;
}
projects / openssl.git / blobdiff