plugeth-utils/restricted/crypto/bn256/cloudflare/lattice_test.go
2021-09-13 15:12:49 -05:00

30 lines
731 B
Go

package bn256
import (
"crypto/rand"
"testing"
)
func TestLatticeReduceCurve(t *testing.T) {
k, _ := rand.Int(rand.Reader, Order)
ks := curveLattice.decompose(k)
if ks[0].BitLen() > 130 || ks[1].BitLen() > 130 {
t.Fatal("reduction too large")
} else if ks[0].Sign() < 0 || ks[1].Sign() < 0 {
t.Fatal("reduction must be positive")
}
}
func TestLatticeReduceTarget(t *testing.T) {
k, _ := rand.Int(rand.Reader, Order)
ks := targetLattice.decompose(k)
if ks[0].BitLen() > 66 || ks[1].BitLen() > 66 || ks[2].BitLen() > 66 || ks[3].BitLen() > 66 {
t.Fatal("reduction too large")
} else if ks[0].Sign() < 0 || ks[1].Sign() < 0 || ks[2].Sign() < 0 || ks[3].Sign() < 0 {
t.Fatal("reduction must be positive")
}
}