/*
* 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
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),
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;
}
unsigned int reseed_counter_tmp;
int ret = 0;
- if (!TEST_ptr(drbg = RAND_DRBG_new(td->nid, td->flags, NULL)))
+ if (!TEST_ptr(drbg = RAND_DRBG_new(td->nid, td->flags, NULL))
+ || !TEST_true(disable_crngt(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)
|| !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);
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;
}
}
#endif
-#ifdef OPENSSL_RAND_SEED_NONE
-/*
- * Calculates the minimum buffer length which needs to be
- * provided to RAND_seed() in order to successfully
- * instantiate the DRBG.
- *
- * Copied from rand_drbg_seedlen() in rand_drbg.c
- */
-static size_t rand_drbg_seedlen(RAND_DRBG *drbg)
-{
- /*
- * If no os entropy source is available then RAND_seed(buffer, bufsize)
- * is expected to succeed if and only if the buffer length satisfies
- * the following requirements, which follow from the calculations
- * in RAND_DRBG_instantiate().
- */
- size_t min_entropy = drbg->strength;
- size_t min_entropylen = drbg->min_entropylen;
-
- /*
- * Extra entropy for the random nonce in the absence of a
- * get_nonce callback, see comment in RAND_DRBG_instantiate().
- */
- if (drbg->min_noncelen > 0 && drbg->get_nonce == NULL) {
- min_entropy += drbg->strength / 2;
- min_entropylen += drbg->min_noncelen;
- }
-
- /*
- * Convert entropy requirement from bits to bytes
- * (dividing by 8 without rounding upwards, because
- * all entropy requirements are divisible by 8).
- */
- min_entropy >>= 3;
-
- /* Return a value that satisfies both requirements */
- return min_entropy > min_entropylen ? min_entropy : min_entropylen;
-}
-#endif /*OPENSSL_RAND_SEED_NONE*/
-
/*
* Test that instantiation with RAND_seed() works as expected
*
size_t rand_buflen;
size_t required_seed_buflen = 0;
- if (!TEST_ptr(master = RAND_DRBG_get0_master()))
+ if (!TEST_ptr(master = RAND_DRBG_get0_master())
+ || !TEST_true(disable_crngt(master)))
return 0;
#ifdef OPENSSL_RAND_SEED_NONE
return 1;
}
+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)
{
int rv = 0;
RAND_DRBG *drbg = NULL;
/* init drbg with default CTR initializer */
- if (!TEST_ptr(drbg = RAND_DRBG_new(0, 0, NULL)))
+ 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)))
&& TEST_int_eq(public->type, NID_sha256)
&& TEST_int_eq(public->flags, RAND_DRBG_FLAG_PUBLIC)
- /* Change DRBG defaults and change master and check again */
+ /* 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
&& 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(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;
+
+ if (!TEST_true(rand_crngt_single_init()))
+ return 0;
+ rand_crngt_cleanup();
+
+ if (!TEST_ptr(drbg = RAND_DRBG_new(dt->nid, dt->flags, NULL)))
+ return 0;
+ ent = (drbg->min_entropylen + CRNGT_BUFSIZ - 1) / CRNGT_BUFSIZ;
+ crngt_case = n % crngt_num_cases;
+ crngt_idx = 0;
+ crngt_get_entropy = &crngt_entropy_cb;
+ if (!TEST_true(rand_crngt_init()))
+ goto err;
+#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;
+ return res;
+}
+
int setup_tests(void)
{
app_data_index = RAND_DRBG_get_ex_new_index(0L, NULL, NULL, NULL, NULL);
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