struct ccrng_state *
ccDevRandomGetRngState(void)
{
cc_globals_t globals = _cc_globals();
dispatch_once(&globals->dev_random_init, ^{
globals->dev_random.rngtype = rng_devrandom;
globals->dev_random.state.devrandom.devrandom = (struct ccrng_system_state *)CC_XMALLOC(sizeof(struct ccrng_system_state));
globals->dev_random.status=ccrng_system_init(globals->dev_random.state.devrandom.devrandom);
if (globals->dev_random.status<0)
{
CC_XFREE(globals->dev_random.state.devrandom.devrandom,sizeof(struct ccrng_system_state));
globals->dev_random.state.devrandom.devrandom=NULL;
}
});
static double perf_ccrng_system_oneshot(unsigned long loops, size_t nbytes)
{
struct ccrng_system_state system_ctx;
CC_UNUSED int status;
uint8_t results[nbytes];
double time;
perf_start();
do {
status = ccrng_system_init(&system_ctx);
cc_assert(status==0);
status = ccrng_generate((struct ccrng_state *)&system_ctx, nbytes, results);
cc_assert(status==0);
ccrng_system_done(&system_ctx);
} while (--loops != 0);
time=perf_time();
return time;
}
static int ECDSA_POST()
{
// Pair wise consistency test
size_t keySize = 256;
int iResult = 0;
struct ccrng_system_state system_rng;
struct ccrng_state *rng = (struct ccrng_state *)&system_rng;
ccrng_system_init(&system_rng);
ccec_const_cp_t cp = ccec_get_cp(keySize);
ccec_full_ctx_decl_cp(cp, full_ec_key);
size_t signedDataLen = ccec_sign_max_size(cp);
uint8_t signedData[signedDataLen];
cc_zero(signedDataLen, signedData);
iResult = ccec_generate_key_fips(cp, rng, full_ec_key);
ccec_full_ctx_clear_cp(cp, full_ec_key);
ccrng_system_done(&system_rng);
return iResult;
}
static int tests_rng(const char *seed) {
byteBuffer entropyBuffer;
int status=-1; // Allocation error;
if (seed==NULL || strlen(seed)<=0) {
// If the seed is not in the argument, we generate one
struct ccrng_system_state system_rng;
size_t entropy_size=16; // Default size of the seed
cc_require((entropyBuffer=mallocByteBuffer(entropy_size))!=NULL,errOut);
cc_require((status=ccrng_system_init(&system_rng))==0, errOut);
cc_require((status=ccrng_generate((struct ccrng_state *)&system_rng, entropyBuffer->len, entropyBuffer->bytes))==0, errOut);
ccrng_system_done(&system_rng);
cc_print("random seed value:",entropyBuffer->len,entropyBuffer->bytes);
} else {
// Otherwise, take the value from the arguments
entropyBuffer = hexStringToBytes(seed);
cc_print("input seed value:",entropyBuffer->len,entropyBuffer->bytes);
}
cc_require((status=ccrng_test_init(&test_rng, entropyBuffer->len,entropyBuffer->bytes))==0, errOut);
return status;
errOut:
printf("Error initializing test rng: %d\n",status);
return -1;
}
static void register_algs(void) {
ccrng_seckey = (struct ccrng_state *)&ccrng_system_state_seckey;
ccrng_system_init(&ccrng_system_state_seckey);
}
