C++ (Cpp) FIPS_get_default_drbg Examples

Example #1

int RAND_init_fips(void)
	{
	DRBG_CTX *dctx;
	size_t plen;
	unsigned char pers[32], *p;
	dctx = FIPS_get_default_drbg();
        if (FIPS_drbg_init(dctx, fips_drbg_type, fips_drbg_flags) <= 0)
		{
		RANDerr(RAND_F_RAND_INIT_FIPS, RAND_R_ERROR_INITIALISING_DRBG);
		return 0;
		}
		
        FIPS_drbg_set_callbacks(dctx,
				drbg_get_entropy, drbg_free_entropy, 20,
				drbg_get_entropy, drbg_free_entropy);
	FIPS_drbg_set_rand_callbacks(dctx, drbg_get_adin, 0,
					drbg_rand_seed, drbg_rand_add);
	/* Personalisation string: a string followed by date time vector */
	strcpy((char *)pers, "OpenSSL DRBG2.0");
	plen = drbg_get_adin(dctx, &p);
	memcpy(pers + 16, p, plen);

        if (FIPS_drbg_instantiate(dctx, pers, sizeof(pers)) <= 0)
		{
		RANDerr(RAND_F_RAND_INIT_FIPS, RAND_R_ERROR_INSTANTIATING_DRBG);
		return 0;
		}
        FIPS_rand_set_method(FIPS_drbg_method());
	return 1;
	}

Example #2

File: fips_rand_lib.c Project: davidlt/openssl-fedora

int FIPS_rand_strength(void)
{
    if (fips_rand_bits)
        return fips_rand_bits;
    if (fips_approved_rand_meth == 1)
        return FIPS_drbg_get_strength(FIPS_get_default_drbg());
    else if (fips_approved_rand_meth == 2)
        return 80;
    else if (fips_approved_rand_meth == 0) {
        if (FIPS_module_mode())
            return 0;
        else
            return 256;
    }
    return 0;
}