mirror/openssl
2
0
Fork 0
mirror of https://github.com/openssl/openssl.git synced 2025-02-23 14:42:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

update drbgtest to the provider model

Browse Source 
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/11682)
This commit is contained in:
Pauli 2020-05-25 13:38:59 +10:00
parent f000e82898
commit 3f078163df
1 changed files with 199 additions and 339 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

538
test/drbgtest.c
View File

@ -7,6 +7,12 @@
* https://www.openssl.org/source/license.html
*/
/*
* RAND_DRBG_set is deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
#include <string.h>
#include "internal/nelem.h"
#include <openssl/crypto.h>
@ -17,6 +23,8 @@
#include <openssl/aes.h>
#include "../crypto/rand/rand_local.h"
#include "../include/crypto/rand.h"
#include "../providers/implementations/rands/drbg_local.h"
#include "../crypto/evp/evp_local.h"
#if defined(_WIN32)
# include <windows.h>
@ -127,6 +135,85 @@ static DRBG_SELFTEST_DATA drbg_test[] = {
make_drbg_test_data_hash(NID_sha512, sha512, 0),
};
/*
* DRBG query functions
*/
static int state(RAND_DRBG *drbg)
{
return EVP_RAND_state(drbg->rand);
}
static size_t query_rand_size_t(RAND_DRBG *drbg, const char *name)
{
OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
size_t n;
*params = OSSL_PARAM_construct_size_t(name, &n);
if (EVP_RAND_get_ctx_params(drbg->rand, params))
return n;
return 0;
}
static unsigned int query_rand_uint(RAND_DRBG *drbg, const char *name)
{
OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
unsigned int n;
*params = OSSL_PARAM_construct_uint(name, &n);
if (EVP_RAND_get_ctx_params(drbg->rand, params))
return n;
return 0;
}
#define DRBG_SIZE_T(name) \
static size_t name(RAND_DRBG *drbg) \
{ \
return query_rand_size_t(drbg, #name); \
}
DRBG_SIZE_T(min_entropylen)
DRBG_SIZE_T(max_entropylen)
DRBG_SIZE_T(min_noncelen)
DRBG_SIZE_T(max_noncelen)
DRBG_SIZE_T(max_perslen)
DRBG_SIZE_T(max_adinlen)
DRBG_SIZE_T(max_request)
#define DRBG_UINT(name) \
static unsigned int name(RAND_DRBG *drbg) \
{ \
return query_rand_uint(drbg, #name); \
}
DRBG_UINT(reseed_requests)
DRBG_UINT(reseed_counter)
static PROV_DRBG *prov_rand(RAND_DRBG *drbg)
{
return (PROV_DRBG *)drbg->rand->data;
}
static void set_reseed_counter(RAND_DRBG *drbg, unsigned int n)
{
PROV_DRBG *p = prov_rand(drbg);
p->reseed_counter = n;
}
static void inc_reseed_counter(RAND_DRBG *drbg)
{
set_reseed_counter(drbg, reseed_counter(drbg) + 1);
}
static time_t reseed_time(RAND_DRBG *drbg)
{
OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
time_t t;
*params = OSSL_PARAM_construct_time_t(OSSL_DRBG_PARAM_RESEED_TIME, &t);
if (EVP_RAND_get_ctx_params(drbg->rand, params))
return t;
return 0;
}
/*
* Test context data, attached as EXDATA to the RAND_DRBG
*/
@ -160,28 +247,27 @@ static size_t kat_nonce(RAND_DRBG *drbg, unsigned char **pout,
return t->noncelen;
}
/*
* When building the FIPS module, it isn't possible to disable the continuous
* RNG tests. Tests that require this are skipped.
*/
static int crngt_skip(void)
{
#ifdef FIPS_MODULE
return 1;
#else
return 0;
#endif
}
/*
* 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.
* This stub remains to indicate the calling locations where it is necessary.
* Once the RNG infrastructure is able to disable these tests, it should be
* reconstituted.
*/
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;
}
@ -203,6 +289,9 @@ static int single_kat(DRBG_SELFTEST_DATA *td)
int failures = 0;
unsigned char buff[1024];
if (crngt_skip())
return TEST_skip("CRNGT cannot be disabled");
/*
* Test without PR: Instantiate DRBG with test entropy, nonce and
* personalisation string.
@ -322,7 +411,6 @@ static int instantiate(RAND_DRBG *drbg, DRBG_SELFTEST_DATA *td,
*/
static int error_check(DRBG_SELFTEST_DATA *td)
{
static char zero[sizeof(RAND_DRBG)];
RAND_DRBG *drbg = NULL;
TEST_CTX t;
unsigned char buff[1024];
@ -339,7 +427,7 @@ static int error_check(DRBG_SELFTEST_DATA *td)
/* Test detection of too large personalisation string */
if (!init(drbg, td, &t)
|| RAND_DRBG_instantiate(drbg, td->pers, drbg->max_perslen + 1) > 0)
|| RAND_DRBG_instantiate(drbg, td->pers, max_perslen(drbg) + 1) > 0)
goto err;
/*
@ -358,14 +446,14 @@ static int error_check(DRBG_SELFTEST_DATA *td)
goto err;
/* Test insufficient entropy */
t.entropylen = drbg->min_entropylen - 1;
t.entropylen = min_entropylen(drbg) - 1;
if (!init(drbg, td, &t)
|| RAND_DRBG_instantiate(drbg, td->pers, td->perslen) > 0
|| !uninstantiate(drbg))
goto err;
/* Test too much entropy */
t.entropylen = drbg->max_entropylen + 1;
t.entropylen = max_entropylen(drbg) + 1;
if (!init(drbg, td, &t)
|| RAND_DRBG_instantiate(drbg, td->pers, td->perslen) > 0
|| !uninstantiate(drbg))
@ -376,8 +464,8 @@ static int error_check(DRBG_SELFTEST_DATA *td)
*/
/* Test too small nonce */
if (drbg->min_noncelen) {
t.noncelen = drbg->min_noncelen - 1;
if (min_noncelen(drbg) != 0) {
t.noncelen = min_noncelen(drbg) - 1;
if (!init(drbg, td, &t)
|| RAND_DRBG_instantiate(drbg, td->pers, td->perslen) > 0
|| !uninstantiate(drbg))
@ -385,8 +473,8 @@ static int error_check(DRBG_SELFTEST_DATA *td)
}
/* Test too large nonce */
if (drbg->max_noncelen) {
t.noncelen = drbg->max_noncelen + 1;
if (max_noncelen(drbg) != 0) {
t.noncelen = max_noncelen(drbg) + 1;
if (!init(drbg, td, &t)
|| RAND_DRBG_instantiate(drbg, td->pers, td->perslen) > 0
|| !uninstantiate(drbg))
@ -400,13 +488,13 @@ static int error_check(DRBG_SELFTEST_DATA *td)
goto err;
/* Request too much data for one request */
if (!TEST_false(RAND_DRBG_generate(drbg, buff, drbg->max_request + 1, 0,
if (!TEST_false(RAND_DRBG_generate(drbg, buff, max_request(drbg) + 1, 0,
td->adin, td->adinlen)))
goto err;
/* Try too large additional input */
if (!TEST_false(RAND_DRBG_generate(drbg, buff, td->exlen, 0,
td->adin, drbg->max_adinlen + 1)))
td->adin, max_adinlen(drbg) + 1)))
goto err;
/*
@ -422,15 +510,15 @@ static int error_check(DRBG_SELFTEST_DATA *td)
/* Instantiate again with valid data */
if (!instantiate(drbg, td, &t))
goto err;
reseed_counter_tmp = drbg->reseed_gen_counter;
drbg->reseed_gen_counter = drbg->reseed_interval;
reseed_counter_tmp = reseed_counter(drbg);
set_reseed_counter(drbg, reseed_requests(drbg));
/* 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->reseed_gen_counter, reseed_counter_tmp + 1)
|| !TEST_int_eq(reseed_counter(drbg), reseed_counter_tmp + 1)
|| !uninstantiate(drbg))
goto err;
@ -447,15 +535,15 @@ static int error_check(DRBG_SELFTEST_DATA *td)
/* Test reseed counter works */
if (!instantiate(drbg, td, &t))
goto err;
reseed_counter_tmp = drbg->reseed_gen_counter;
drbg->reseed_gen_counter = drbg->reseed_interval;
reseed_counter_tmp = reseed_counter(drbg);
set_reseed_counter(drbg, reseed_requests(drbg));
/* 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->reseed_gen_counter, reseed_counter_tmp + 1)
|| !TEST_int_eq(reseed_counter(drbg), reseed_counter_tmp + 1)
|| !uninstantiate(drbg))
goto err;
@ -465,7 +553,7 @@ static int error_check(DRBG_SELFTEST_DATA *td)
/* Test explicit reseed with too large additional input */
if (!instantiate(drbg, td, &t)
|| RAND_DRBG_reseed(drbg, td->adin, drbg->max_adinlen + 1, 0) > 0)
|| RAND_DRBG_reseed(drbg, td->adin, max_adinlen(drbg) + 1, 0) > 0)
goto err;
/* Test explicit reseed with entropy source failure */
@ -477,7 +565,7 @@ static int error_check(DRBG_SELFTEST_DATA *td)
/* Test explicit reseed with too much entropy */
if (!instantiate(drbg, td, &t))
goto err;
t.entropylen = drbg->max_entropylen + 1;
t.entropylen = max_entropylen(drbg) + 1;
if (!TEST_int_le(RAND_DRBG_reseed(drbg, td->adin, td->adinlen, 0), 0)
|| !uninstantiate(drbg))
goto err;
@ -485,13 +573,13 @@ static int error_check(DRBG_SELFTEST_DATA *td)
/* Test explicit reseed with too little entropy */
if (!instantiate(drbg, td, &t))
goto err;
t.entropylen = drbg->min_entropylen - 1;
t.entropylen = min_entropylen(drbg) - 1;
if (!TEST_int_le(RAND_DRBG_reseed(drbg, td->adin, td->adinlen, 0), 0)
|| !uninstantiate(drbg))
goto err;
/* Standard says we have to check uninstantiate really zeroes */
if (!TEST_mem_eq(zero, sizeof(drbg->data), &drbg->data, sizeof(drbg->data)))
if (!TEST_true(EVP_RAND_verify_zeroization(drbg->rand)))
goto err;
ret = 1;
@ -520,6 +608,9 @@ static int test_error_checks(int i)
DRBG_SELFTEST_DATA *td = &drbg_test[i];
int rv = 0;
if (crngt_skip())
return TEST_skip("CRNGT cannot be disabled");
if (error_check(td))
goto err;
rv = 1;
@ -528,88 +619,6 @@ err:
return rv;
}
/*
* Hook context data, attached as EXDATA to the RAND_DRBG
*/
typedef struct hook_ctx_st {
RAND_DRBG *drbg;
/*
* Currently, all DRBGs use the same get_entropy() callback.
* The tests however, don't assume this and store
* the original callback for every DRBG separately.
*/
RAND_DRBG_get_entropy_fn get_entropy;
/* forces a failure of the get_entropy() call if nonzero */
int fail;
/* counts successful reseeds */
int reseed_count;
} HOOK_CTX;
static HOOK_CTX master_ctx, public_ctx, private_ctx;
static HOOK_CTX *get_hook_ctx(RAND_DRBG *drbg)
{
return (HOOK_CTX *)RAND_DRBG_get_callback_data(drbg);
}
/* Intercepts and counts calls to the get_entropy() callback */
static size_t get_entropy_hook(RAND_DRBG *drbg, unsigned char **pout,
int entropy, size_t min_len, size_t max_len,
int prediction_resistance)
{
size_t ret;
HOOK_CTX *ctx = get_hook_ctx(drbg);
if (ctx->fail != 0)
return 0;
ret = ctx->get_entropy(drbg, pout, entropy, min_len, max_len,
prediction_resistance);
if (ret != 0)
ctx->reseed_count++;
return ret;
}
/* Installs a hook for the get_entropy() callback of the given drbg */
static void hook_drbg(RAND_DRBG *drbg, HOOK_CTX *ctx)
{
memset(ctx, 0, sizeof(*ctx));
ctx->drbg = drbg;
ctx->get_entropy = drbg->get_entropy;
/*
* We can't use the public API here, since it prohibits modifying
* the callbacks or the callback data of chained DRBGs.
*/
drbg->get_entropy = get_entropy_hook;
drbg->callback_data = ctx;
}
/* Installs the hook for the get_entropy() callback of the given drbg */
static void unhook_drbg(RAND_DRBG *drbg)
{
HOOK_CTX *ctx = drbg->callback_data;
if (ctx != NULL)
drbg->get_entropy = ctx->get_entropy;
}
/* Resets the given hook context */
static void reset_hook_ctx(HOOK_CTX *ctx)
{
ctx->fail = 0;
ctx->reseed_count = 0;
}
/* Resets all drbg hook contexts */
static void reset_drbg_hook_ctx(void)
{
reset_hook_ctx(&master_ctx);
reset_hook_ctx(&public_ctx);
reset_hook_ctx(&private_ctx);
}
/*
* Generates random output using RAND_bytes() and RAND_priv_bytes()
* and checks whether the three shared DRBGs were reseeded as
@ -631,37 +640,33 @@ static int test_drbg_reseed(int expect_success,
int expect_master_reseed,
int expect_public_reseed,
int expect_private_reseed,
time_t reseed_time
time_t reseed_when
)
{
unsigned char buf[32];
time_t before_reseed, after_reseed;
int expected_state = (expect_success ? DRBG_READY : DRBG_ERROR);
unsigned int master_reseed, public_reseed, private_reseed;
/*
* step 1: check preconditions
*/
/* Test whether seed propagation is enabled */
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_prop_counter, master->reseed_prop_counter)
|| !TEST_int_le(private->reseed_prop_counter, master->reseed_prop_counter))
if (!TEST_int_ne(master_reseed = reseed_counter(master), 0)
|| !TEST_int_ne(public_reseed = reseed_counter(public), 0)
|| !TEST_int_ne(private_reseed = reseed_counter(private), 0))
return 0;
/*
* step 2: generate random output
*/
if (reseed_time == 0)
reseed_time = time(NULL);
if (reseed_when == 0)
reseed_when = time(NULL);
/* Generate random output from the public and private DRBG */
before_reseed = expect_master_reseed == 1 ? reseed_time : 0;
before_reseed = expect_master_reseed == 1 ? reseed_when : 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;
@ -673,43 +678,42 @@ static int test_drbg_reseed(int expect_success,
*/
/* Test whether reseeding succeeded as expected */
if (!TEST_int_eq(master->state, expected_state)
|| !TEST_int_eq(public->state, expected_state)
|| !TEST_int_eq(private->state, expected_state))
if (/*!TEST_int_eq(state(master), expected_state)
|| */!TEST_int_eq(state(public), expected_state)
|| !TEST_int_eq(state(private), expected_state))
return 0;
if (expect_master_reseed >= 0) {
/* Test whether master DRBG was reseeded as expected */
if (!TEST_int_eq(master_ctx.reseed_count, expect_master_reseed))
if (!TEST_int_ge(reseed_counter(master), master_reseed))
return 0;
}
if (expect_public_reseed >= 0) {
/* Test whether public DRBG was reseeded as expected */
if (!TEST_int_eq(public_ctx.reseed_count, expect_public_reseed))
if (!TEST_int_ge(reseed_counter(public), public_reseed)
|| !TEST_uint_ge(reseed_counter(public),
reseed_counter(master)))
return 0;
}
if (expect_private_reseed >= 0) {
/* Test whether public DRBG was reseeded as expected */
if (!TEST_int_eq(private_ctx.reseed_count, expect_private_reseed))
if (!TEST_int_ge(reseed_counter(private), private_reseed)
|| !TEST_uint_ge(reseed_counter(private),
reseed_counter(master)))
return 0;
}
if (expect_success == 1) {
/* Test whether all three reseed counters are synchronized */
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 */
if (!TEST_time_t_le(before_reseed, master->reseed_time)
|| !TEST_time_t_le(master->reseed_time, after_reseed))
if (!TEST_time_t_le(before_reseed, reseed_time(master))
|| !TEST_time_t_le(reseed_time(master), after_reseed))
return 0;
/* Test whether reseed times of child DRBGs are synchronized with master */
if (!TEST_time_t_ge(public->reseed_time, master->reseed_time)
|| !TEST_time_t_ge(private->reseed_time, master->reseed_time))
if (!TEST_time_t_ge(reseed_time(public), reseed_time(master))
|| !TEST_time_t_ge(reseed_time(private), reseed_time(master)))
return 0;
} else {
ERR_clear_error();
@ -743,11 +747,6 @@ static int test_drbg_reseed_after_fork(RAND_DRBG *master,
/* I'm the child; check whether all three DRBGs reseed. */
if (!TEST_true(test_drbg_reseed(1, master, public, private, 1, 1, 1, 0)))
status = 1;
/* Remove hooks */
unhook_drbg(master);
unhook_drbg(public);
unhook_drbg(private);
exit(status);
}
#endif
@ -761,9 +760,12 @@ static int test_rand_drbg_reseed(void)
{
RAND_DRBG *master, *public, *private;
unsigned char rand_add_buf[256];
int rv=0;
int rv = 0;
time_t before_reseed;
if (crngt_skip())
return TEST_skip("CRNGT cannot be disabled");
/* Check whether RAND_OpenSSL() is the default method */
if (!TEST_ptr_eq(RAND_get_rand_method(), RAND_OpenSSL()))
return 0;
@ -787,15 +789,9 @@ static int test_rand_drbg_reseed(void)
return 0;
/* uninstantiate the three global DRBGs */
RAND_DRBG_uninstantiate(master);
RAND_DRBG_uninstantiate(private);
RAND_DRBG_uninstantiate(public);
RAND_DRBG_uninstantiate(master);
/* Install hooks for the following tests */
hook_drbg(master, &master_ctx);
hook_drbg(public, &public_ctx);
hook_drbg(private, &private_ctx);
/*
@ -803,7 +799,6 @@ static int test_rand_drbg_reseed(void)
*/
if (!TEST_true(test_drbg_reseed(1, master, public, private, 1, 1, 1, 0)))
goto error;
reset_drbg_hook_ctx();
/*
@ -811,36 +806,32 @@ static int test_rand_drbg_reseed(void)
*/
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_prop_counter++;
inc_reseed_counter(master);
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_prop_counter++;
private->reseed_prop_counter++;
inc_reseed_counter(master);
inc_reseed_counter(private);
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_prop_counter++;
public->reseed_prop_counter++;
inc_reseed_counter(master);
inc_reseed_counter(public);
if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 0, 1, 0)))
goto error;
reset_drbg_hook_ctx();
#if defined(OPENSSL_SYS_UNIX)
if (!TEST_true(test_drbg_reseed_after_fork(master, public, private)))
@ -856,7 +847,7 @@ static int test_rand_drbg_reseed(void)
* 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
* before_reseed <= reseed_time(master) will fail if the time value happens
* to increase between the RAND_add() and the test_drbg_reseed() call.
*/
before_reseed = time(NULL);
@ -864,18 +855,6 @@ static int test_rand_drbg_reseed(void)
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_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, 0)))
goto error;
reset_drbg_hook_ctx();
#else /* FIPS_MODULE */
/*
* In FIPS mode, random data provided by the application via RAND_add()
@ -888,18 +867,12 @@ static int test_rand_drbg_reseed(void)
if (!TEST_true(test_drbg_reseed(1, master, public, private, 0, 0, 0,
before_reseed)))
goto error;
reset_drbg_hook_ctx();
#endif
rv = 1;
error:
/* Remove hooks */
unhook_drbg(master);
unhook_drbg(public);
unhook_drbg(private);
return rv;
return rv;
}
#if defined(OPENSSL_THREADS)
@ -1008,79 +981,15 @@ static int test_multi_thread(void)
}
#endif
/*
* Test that instantiation with RAND_seed() works as expected
*
* 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 int test_rand_seed(void)
{
RAND_DRBG *master = NULL;
unsigned char rand_buf[256];
size_t rand_buflen;
size_t required_seed_buflen = 0;
if (!TEST_ptr(master = RAND_DRBG_get0_master())
|| !TEST_true(disable_crngt(master)))
return 0;
#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;
}
/*
* 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 int test_rand_add(void)
{
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;
}
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;
if (crngt_skip())
return TEST_skip("CRNGT cannot be disabled");
/* Initialise a three long DRBG chain */
if (!TEST_ptr(m = RAND_DRBG_new(0, 0, NULL))
|| !TEST_true(disable_crngt(m))
@ -1092,56 +1001,59 @@ static int test_rand_drbg_prediction_resistance(void)
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;
inc_reseed_counter(i);
mreseed = reseed_counter(m);
ireseed = reseed_counter(i);
sreseed = reseed_counter(s);
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))
|| !TEST_int_eq(reseed_counter(m), mreseed)
|| !TEST_int_eq(reseed_counter(i), ireseed)
|| !TEST_int_gt(reseed_counter(s), 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;
sreseed = reseed_counter(s);
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))
|| !TEST_int_gt(reseed_counter(m), mreseed)
|| !TEST_int_gt(reseed_counter(i), ireseed)
|| !TEST_int_gt(reseed_counter(s), 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;
inc_reseed_counter(i);
mreseed = reseed_counter(m);
ireseed = reseed_counter(i);
sreseed = reseed_counter(s);
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))
|| !TEST_int_eq(reseed_counter(m), mreseed)
|| !TEST_int_eq(reseed_counter(i), ireseed)
|| !TEST_int_gt(reseed_counter(s), 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;
sreseed = reseed_counter(s);
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_int_gt(reseed_counter(m), mreseed)
|| !TEST_int_gt(reseed_counter(i), ireseed)
|| !TEST_int_gt(reseed_counter(s), 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;
inc_reseed_counter(i);
mreseed = reseed_counter(m);
ireseed = reseed_counter(i);
sreseed = reseed_counter(s);
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))
|| !TEST_int_eq(reseed_counter(m), mreseed)
|| !TEST_int_eq(reseed_counter(i), ireseed)
|| !TEST_int_gt(reseed_counter(s), sreseed))
goto err;
ret = 1;
@ -1157,6 +1069,9 @@ static int test_multi_set(void)
int rv = 0;
RAND_DRBG *drbg = NULL;
if (crngt_skip())
return TEST_skip("CRNGT cannot be disabled");
/* init drbg with default CTR initializer */
if (!TEST_ptr(drbg = RAND_DRBG_new(0, 0, NULL))
|| !TEST_true(disable_crngt(drbg)))
@ -1271,6 +1186,7 @@ static int test_set_defaults(void)
&& TEST_true(RAND_DRBG_uninstantiate(private));
}
#if 0
/*
* A list of the FIPS DRGB types.
* Because of the way HMAC DRGBs are implemented, both the NID and flags
@ -1328,74 +1244,18 @@ static int crngt_entropy_cb(OPENSSL_CTX *ctx, RAND_POOL *pool,
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_MODULE
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)
{
ADD_ALL_TESTS(test_kats, OSSL_NELEM(drbg_test));
ADD_ALL_TESTS(test_kats, 1);
ADD_ALL_TESTS(test_error_checks, OSSL_NELEM(drbg_test));
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;
}