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RAND: changed from make_small_int() to get_random_ternary()

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Malte 2014-05-06 07:34:35 +02:00 committed by malte
parent 3fc925c396
commit f459f09e57
1 changed files with 3 additions and 3 deletions
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6
src/rand.c
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@ -38,7 +38,7 @@
*/ */
static mp_digit read_int_dev_random(void); static mp_digit read_int_dev_random(void);
static mp_digit read_int_dev_urandom(void); static mp_digit read_int_dev_urandom(void);
static mp_digit make_small_int(mp_digit random_int, int* sign); static mp_digit get_random_ternary(mp_digit random_int, int* sign);
static mp_int *make_big_int(mp_int *upper_bound, mp_int *lower_bound, static mp_int *make_big_int(mp_int *upper_bound, mp_int *lower_bound,
int entropy_source); int entropy_source);
static int check_polynom(pb_poly *polynom); static int check_polynom(pb_poly *polynom);
@ -95,7 +95,7 @@ static mp_digit read_int_dev_urandom(void)
* @param sign a integer to store the sign (1==positiv) [out] * @param sign a integer to store the sign (1==positiv) [out]
* @return random small integer from the set {-1, 0, 1} * @return random small integer from the set {-1, 0, 1}
*/ */
static mp_digit make_small_int(mp_digit random_int, int* sign) static mp_digit get_random_ternary(mp_digit random_int, int* sign)
{ {
random_int = random_int % 3; random_int = random_int % 3;
@ -177,7 +177,7 @@ pb_poly *ntru_get_poly_small(int length, int entropy_source)
} else { } else {
NTRU_ABORT("No suitable entropy source selectetd.\n"); NTRU_ABORT("No suitable entropy source selectetd.\n");
} }
c = make_small_int(c, &sign); c = get_random_ternary(c, &sign);
mp_set(&(poly->terms[i]), c); mp_set(&(poly->terms[i]), c);
if (sign == 1) if (sign == 1)
poly->terms[i].sign = 1; poly->terms[i].sign = 1;