sidh_torture/csidh/test/main.c

#include <string.h>
#include <assert.h>
#include <stdio.h>
#include "../ref/csidh/csidh.h"

static void u512_print(u512 const *x)
{
    for (size_t i=0; i<8; i++) {
        printf("0x%016lX,", x->c[i]);
    }
    printf("\n");
}

static void int_print(const int8_t v[37]) {
    for (size_t i = 0; i<37; i++)
        printf("0x%x,", (unsigned char)v[i]);
    printf("\n");
}

static void fp_print(fp const *x)
{
    u512 y;
    fp_dec(&y, x);
    u512_print(&y);
}

static void fp_cmp(fp const *x, uint64_t const *org)
{
    u512 y;
    fp_dec(&y, x);
    assert(memcmp(&y.c, org, sizeof(y.c)) == 0);
}

static void testLoopRef() {
    for(size_t i=0; i<10; i++) {
        private_key prA, prB;
        public_key pkA, pkB;
        public_key shA, shB;

        // private key
        csidh_private(&prA);
        csidh_private(&prB);

        // public key
        csidh(&pkA, &base, &prA);
        csidh(&pkB, &base, &prB);

        //csidh
        csidh(&shA, &pkA, &prB);
        csidh(&shB, &pkB, &prA);
        //int_print(prA.e);
        //fp_print(&pkA.A);
        assert(memcmp(&shA, &shB, sizeof(shB))==0);
    }
}

static void testHardcoded() {
    private_key prv;
    public_key pub;
    uint8_t prv_bytes[] = {0xdb,0x54,0xe4,0xd4,0xd0,0xbd,0xee,0xcb,0xf4,0xd0,0xc2,0xbc,0x52,0x44,0x11,0xee,0xe1,0x14,0xd2,0x24,0xe5,0x0,0xcc,0xf5,0xc0,0xe1,0x1e,0xb3,0x43,0x52,0x45,0xbe,0xfb,0x54,0xc0,0x55,0xb2};
    uint64_t pub_bytes[] = {0x6BCAAD7EFD426976,0x743D780A06D2CDC5,0x841A2D76984849F7,0x1523EB45B3B78D5F,0xCF7A093C773EDF8D,0xFAB0FF04A7B4A54D,0x05DE322C864069D2,0x0C55DC69711DF47A};

    memcpy(prv.e, prv_bytes, sizeof(prv.e));
    // generate public key from private and compare to reference value
    csidh(&pub, &base, &prv);
    fp_cmp(&pub.A, pub_bytes);
}

int main() {
    testHardcoded();
    testLoopRef();
}