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/*
* ecgen, tool for generating Elliptic curve domain parameters
* Copyright (C) 2017-2018 J08nY
*/
#include "equation.h"
#include "field.h"
#include "io/input.h"
GENERATOR(a_gen_random) {
curve->a = genrand(curve->field);
return 1;
}
GENERATOR(a_gen_input) {
pari_sp ltop = avma;
GEN inp = input_int("a:", cfg->bits);
if (gequalm1(inp)) {
avma = ltop;
return 0;
} else if (equalii(inp, gen_m2)) {
avma = ltop;
return INT_MIN;
}
GEN elem = field_ielement(curve->field, inp);
if (!elem) {
avma = ltop;
return 0;
}
curve->a = elem;
return 1;
}
static GEN a = NULL;
static curve_t *curve_a = NULL;
GENERATOR(a_gen_once) {
if (a && curve_a == curve) {
curve->a = gcopy(a);
return 1;
}
int inp = a_gen_input(curve, args, state);
if (inp > 0) {
a = gclone(curve->a);
curve_a = curve;
return 1;
} else {
return 0;
}
}
GENERATOR(a_gen_zero) {
curve->a = gen_0;
return 1;
}
GENERATOR(a_gen_one) {
curve->a = gen_1;
return 1;
}
GENERATOR(b_gen_random) {
curve->b = genrand(curve->field);
return 1;
}
GENERATOR(b_gen_input) {
pari_sp ltop = avma;
GEN inp = input_int("b:", cfg->bits);
if (gequalm1(inp)) {
avma = ltop;
return 0;
} else if (equalii(inp, gen_m2)) {
avma = ltop;
return INT_MIN;
}
GEN elem = field_ielement(curve->field, inp);
if (!elem) {
avma = ltop;
return 0;
}
curve->b = elem;
return 1;
}
static GEN b = NULL;
static curve_t *curve_b = NULL;
GENERATOR(b_gen_once) {
if (b && curve_b == curve) {
curve->b = gcopy(b);
return 1;
}
int inp = b_gen_input(curve, args, state);
if (inp > 0) {
b = gclone(curve->b);
curve_b = curve;
return 1;
} else {
return 0;
}
}
GENERATOR(b_gen_zero) {
curve->b = gen_0;
return 1;
}
GENERATOR(b_gen_one) {
curve->b = gen_1;
return 1;
}
void equation_quit(void) {
if (a && isclone(a)) {
gunclone(a);
}
if (b && isclone(b)) {
gunclone(b);
}
}
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