};
static gmp_randstate_t RANDSTATE;
+static d0_bignum_t temp;
#include <time.h>
-void d0_bignum_INITIALIZE()
+#include <stdio.h>
+void d0_bignum_INITIALIZE(void)
{
- gmp_randinit_default(RANDSTATE);
- gmp_randseed_ui(RANDSTATE, time(NULL)); // TODO seed
+ FILE *f;
+ d0_bignum_init(&temp);
+ gmp_randinit_mt(RANDSTATE);
+ gmp_randseed_ui(RANDSTATE, time(NULL));
+ f = fopen("/dev/urandom", "rb");
+ if(!f)
+ f = fopen("/dev/random", "rb");
+ if(f)
+ {
+ unsigned char buf[256];
+ setbuf(f, NULL);
+ if(fread(buf, sizeof(buf), 1, f) == 1)
+ {
+ mpz_import(temp.z, sizeof(buf), 1, 1, 0, 0, buf);
+ gmp_randseed(RANDSTATE, temp.z);
+ }
+ fclose(f);
+ }
}
-void d0_bignum_SHUTDOWN()
+void d0_bignum_SHUTDOWN(void)
{
- // free RANDSTATE
+ d0_bignum_clear(&temp);
+ gmp_randclear(RANDSTATE);
}
BOOL d0_iobuf_write_bignum(d0_iobuf_t *buf, const d0_bignum_t *bignum)
return bignum;
}
-d0_bignum_t *d0_bignum_new()
+d0_bignum_t *d0_bignum_new(void)
{
d0_bignum_t *b = d0_malloc(sizeof(d0_bignum_t));
mpz_init(b->z);
d0_bignum_t *d0_bignum_rand_range(d0_bignum_t *r, const d0_bignum_t *min, const d0_bignum_t *max)
{
- static d0_bignum_t *temp = NULL; if(!temp) temp = d0_bignum_new();
if(!r) r = d0_bignum_new(); if(!r) return NULL;
- mpz_sub(temp->z, max->z, min->z);
- mpz_urandomm(r->z, RANDSTATE, temp->z);
+ mpz_sub(temp.z, max->z, min->z);
+ mpz_urandomm(r->z, RANDSTATE, temp.z);
mpz_add(r->z, r->z, min->z);
return r;
}