sidh-torture/csidh/ref/test/main.c

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

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

void print_bytes(uint8_t *out, size_t sz) {
    for(size_t i=0; i<sz; i++) {
        printf("%02X", out[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");
}

// Print after convertion from Montgomery domain
static void fp_print(fp const *x)
{
    u512 y;
    fp_dec(&y, x);
    u512_print(&y);
}

// Print without converting from Montgomery domain
static void fp_print_n(fp const *x) {
    for (size_t i=0; i<8; i++) {
        printf("0x%016lX, ", x->x.c[i]);
    }
    printf("\n");
}

static bool fp_cmp(fp const *l, fp const *r)
{
    u512 lu,ru;
    fp_dec(&lu, l);
    fp_dec(&ru, r);
    return ( sizeof(lu.c) == sizeof(ru.c) ) && (memcmp(&lu.c, &ru.c, sizeof(lu.c)) == 0);
}

static bool 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);
        return (memcmp(&shA, &shB, sizeof(shB))==0);
    }
}

static bool testImportExport() {
    uint8_t buf_pub[64]={0};
    private_key prv1 = {0};
    private_key prv2 = {0};
    public_key pub1 = {0};
    public_key pub2 = {0};

    csidh_private(&prv1);
    csidh_private(&prv2);

    csidh(&pub1, &base, &prv1);

    export_public(buf_pub, &pub1);
    import_public(&pub2, buf_pub);
    return fp_cmp(&pub1.A, &pub2.A);
}

// special cases:
//  * diag 0
//  * only 0
static void validator() {
    uint8_t rnd[64] = {0};
    private_key prA = {0};
    public_key pubA={0};

    csidh_private(&prA);
    csidh(&pubA, &base, &prA);
    export_public(rnd, &pubA);

    for (size_t i=0; i<64; i++) {
        uint8_t r[64] = {0};
        memcpy(r, rnd, sizeof(r));
        r[i]=0x01;
        printf("%u -> ", import_public(&pubA, r));
    }
}

int main() {
//    validator();
    return !(
        testImportExport() &&
        testLoopRef());
}