ref: 9a7efce5f114ba90987f12b441225b340d554ea6
dir: /libauthsrv/ed448.mpc/
void ed448_curve(mpint *p, mpint *a, mpint *d, mpint *x, mpint *y){
strtomp("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", nil, 16, p);
mpassign(mpone, a);
uitomp(39081UL, d);
d->sign = -1;
strtomp("297EA0EA2692FF1B4FAFF46098453A6A26ADF733245F065C3C59D0709CECFA96147EAAF3932D94C63D96C170033F4BA0C7F0DE840AED939F", nil, 16, x);
uitomp(19UL, y);
}