ceremonyclient/nekryptology/pkg/accumulator/lib_test.go

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2023-07-05 05:32:28 +00:00
//
// Copyright Coinbase, Inc. All Rights Reserved.
//
// SPDX-License-Identifier: Apache-2.0
//
package accumulator
import (
"testing"
"github.com/stretchr/testify/require"
"source.quilibrium.com/quilibrium/monorepo/nekryptology/pkg/core/curves"
)
func TestEvaluatePolyG1(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
poly := polynomialPoint{
curve.PointG1.Generator().Mul(curve.Scalar.New(3)),
curve.PointG1.Generator().Mul(curve.Scalar.New(2)),
curve.PointG1.Generator().Mul(curve.Scalar.New(1)),
}
output1, err := poly.evaluate(curve.Scalar.New(1))
require.NoError(t, err)
require.NotNil(t, output1)
result1 := curve.PointG1.Generator().Mul(curve.Scalar.New(6))
require.Equal(t, output1.ToAffineCompressed(), result1.ToAffineCompressed())
output2, err := poly.evaluate(curve.Scalar.New(2))
require.NoError(t, err)
require.NotNil(t, output2)
result2 := curve.PointG1.Generator().Mul(curve.Scalar.New(11))
require.Equal(t, output2.ToAffineCompressed(), result2.ToAffineCompressed())
}
func TestEvaluatePolyG1Error(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
poly := polynomialPoint{
nil,
curve.PointG1.Generator().Mul(curve.Scalar.New(2)),
curve.PointG1.Generator().Mul(curve.Scalar.New(1)),
}
_, err := poly.evaluate(curve.Scalar.New(1))
require.Error(t, err)
}
func TestAddAssignPolyG1(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
// Test polynomial with equal length
poly1 := polynomialPoint{
curve.PointG1.Generator().Mul(curve.Scalar.New(3)),
curve.PointG1.Generator().Mul(curve.Scalar.New(2)),
curve.PointG1.Generator().Mul(curve.Scalar.New(1)),
}
poly2 := polynomialPoint{
curve.PointG1.Generator().Mul(curve.Scalar.New(1)),
curve.PointG1.Generator().Mul(curve.Scalar.New(2)),
curve.PointG1.Generator().Mul(curve.Scalar.New(3)),
}
output, err := poly1.Add(poly2)
require.NoError(t, err)
require.NotNil(t, output)
result := polynomialPoint{
curve.PointG1.Generator().Mul(curve.Scalar.New(4)),
curve.PointG1.Generator().Mul(curve.Scalar.New(4)),
curve.PointG1.Generator().Mul(curve.Scalar.New(4)),
}
for i := 0; i < len(output); i++ {
require.Equal(t, output[i].ToAffineCompressed(), result[i].ToAffineCompressed())
}
// Test polynomials with unequal length
poly3 := polynomialPoint{
curve.PointG1.Generator().Mul(curve.Scalar.New(1)),
curve.PointG1.Generator().Mul(curve.Scalar.New(2)),
}
output2, err := poly1.Add(poly3)
require.NoError(t, err)
require.NotNil(t, output2)
result2 := polynomialPoint{
curve.PointG1.Generator().Mul(curve.Scalar.New(4)),
curve.PointG1.Generator().Mul(curve.Scalar.New(4)),
curve.PointG1.Generator().Mul(curve.Scalar.New(1)),
}
require.Equal(t, len(output2), len(result2))
for i := 0; i < len(output2); i++ {
require.Equal(t, output2[i].ToAffineCompressed(), result2[i].ToAffineCompressed())
}
// Test polynomial with Capacity
poly4 := make(polynomialPoint, 0, 3)
poly5, err := poly4.Add(poly1)
require.NoError(t, err)
require.Equal(t, len(poly5), len(poly1))
for i := 0; i < len(poly5); i++ {
require.Equal(t, poly5[i].ToAffineCompressed(), poly1[i].ToAffineCompressed())
}
}
func TestAddAssignPolyG1Error(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
poly1 := polynomialPoint{
nil,
curve.PointG1.Generator().Mul(curve.Scalar.New(2)),
curve.PointG1.Generator().Mul(curve.Scalar.New(1)),
}
poly2 := polynomialPoint{
curve.PointG1.Generator().Mul(curve.Scalar.New(1)),
curve.PointG1.Generator().Mul(curve.Scalar.New(2)),
curve.PointG1.Generator().Mul(curve.Scalar.New(3)),
}
output, err := poly1.Add(poly2)
require.Error(t, err)
require.Nil(t, output)
}
func TestMulAssignPolyG1(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
poly := polynomialPoint{
curve.PointG1.Generator().Mul(curve.Scalar.New(3)),
curve.PointG1.Generator().Mul(curve.Scalar.New(2)),
curve.PointG1.Generator().Mul(curve.Scalar.New(1)),
}
rhs := curve.Scalar.New(3)
output, err := poly.Mul(rhs)
require.NoError(t, err)
require.NotNil(t, output)
poly2 := polynomialPoint{
curve.PointG1.Generator().Mul(curve.Scalar.New(9)),
curve.PointG1.Generator().Mul(curve.Scalar.New(6)),
curve.PointG1.Generator().Mul(curve.Scalar.New(3)),
}
for i := 0; i < len(poly2); i++ {
require.Equal(t, output[i].ToAffineCompressed(), poly2[i].ToAffineCompressed())
}
}
func TestMulAssignPolyG1Error(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
poly := polynomialPoint{
nil,
curve.PointG1.Generator().Mul(curve.Scalar.New(2)),
curve.PointG1.Generator().Mul(curve.Scalar.New(1)),
}
rhs := curve.Scalar.New(3)
output, err := poly.Mul(rhs)
require.Error(t, err)
require.Nil(t, output)
}
func TestPushPoly(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
poly := polynomial{
curve.Scalar.New(3),
curve.Scalar.New(2),
curve.Scalar.New(1),
}
scalar := curve.Scalar.New(4)
result := append(poly, scalar)
require.Equal(t, result[3], scalar)
// Push one more
scalar2 := curve.Scalar.New(5)
result2 := append(result, scalar2)
require.Equal(t, result2[4], scalar2)
// Push to a new polynomial
newPoly := polynomial{}
newPoly = append(newPoly, scalar)
require.Equal(t, newPoly[0], scalar)
newPoly = append(newPoly, scalar2)
require.Equal(t, newPoly[1], scalar2)
}
func TestAddAssignPoly(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
// Test polynomial with equal length
poly1 := polynomial{
curve.Scalar.New(3),
curve.Scalar.New(2),
curve.Scalar.New(1),
}
poly2 := polynomial{
curve.Scalar.New(1),
curve.Scalar.New(2),
curve.Scalar.New(3),
}
output, err := poly1.Add(poly2)
require.NoError(t, err)
require.NotNil(t, output)
result := []curves.Scalar{
curve.Scalar.New(4),
curve.Scalar.New(4),
curve.Scalar.New(4),
}
for i := 0; i < len(output); i++ {
require.Equal(t, output[i], result[i])
}
// Test polynomials with unequal length
poly3 := polynomial{
curve.Scalar.New(1),
curve.Scalar.New(2),
}
output2, err := poly1.Add(poly3)
require.NoError(t, err)
require.NotNil(t, output2)
result2 := []curves.Scalar{
curve.Scalar.New(4),
curve.Scalar.New(4),
curve.Scalar.New(1),
}
require.Equal(t, len(output2), len(result2))
for i := 0; i < len(output2); i++ {
require.Equal(t, output2[i], result2[i])
}
}
func TestAddAssignPolyError(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
// Test polynomial with equal length
poly1 := polynomial{
nil,
curve.Scalar.New(2),
curve.Scalar.New(1),
}
poly2 := polynomial{
curve.Scalar.New(1),
curve.Scalar.New(2),
curve.Scalar.New(3),
}
output, err := poly1.Add(poly2)
require.Error(t, err)
require.Nil(t, output)
}
func TestSubAssignPoly(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
// Test polynomial with equal length
poly1 := polynomial{
curve.Scalar.New(3),
curve.Scalar.New(2),
curve.Scalar.New(1),
}
poly2 := polynomial{
curve.Scalar.New(1),
curve.Scalar.New(2),
curve.Scalar.New(3),
}
output, err := poly1.Sub(poly2)
require.NoError(t, err)
require.NotNil(t, output)
result := []curves.Scalar{
curve.Scalar.New(2),
curve.Scalar.New(0),
curve.Scalar.New(-2),
}
for i := 0; i < len(output); i++ {
require.Equal(t, output[i].Bytes(), result[i].Bytes())
}
// Test polynomials with unequal length
poly3 := polynomial{
curve.Scalar.New(1),
curve.Scalar.New(2),
curve.Scalar.New(3),
curve.Scalar.New(4),
}
output2, err := poly1.Sub(poly3)
require.NoError(t, err)
require.NotNil(t, output2)
result2 := []curves.Scalar{
curve.Scalar.New(2),
curve.Scalar.New(0),
curve.Scalar.New(-2),
curve.Scalar.New(-4),
}
require.Equal(t, len(output2), len(result2))
for i := 0; i < len(output2); i++ {
require.Equal(t, output2[i].Bytes(), result2[i].Bytes())
}
}
func TestSubAssignPolyError(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
poly1 := polynomial{
nil,
curve.Scalar.New(2),
curve.Scalar.New(1),
}
poly2 := polynomial{
curve.Scalar.New(1),
curve.Scalar.New(2),
curve.Scalar.New(3),
}
output, err := poly1.Sub(poly2)
require.Error(t, err)
require.Nil(t, output)
}
func TestMulAssignPoly(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
// Test polynomial with equal length
poly1 := polynomial{
curve.Scalar.New(3),
curve.Scalar.New(2),
curve.Scalar.New(1),
}
poly2 := polynomial{
curve.Scalar.New(1),
curve.Scalar.New(2),
curve.Scalar.New(3),
}
output, err := poly1.Mul(poly2)
require.NoError(t, err)
require.NotNil(t, output)
result := []curves.Scalar{
curve.Scalar.New(3),
curve.Scalar.New(8),
curve.Scalar.New(14),
curve.Scalar.New(8),
curve.Scalar.New(3),
}
for i := 0; i < len(result); i++ {
require.Equal(t, output[i].Bytes(), result[i].Bytes())
}
// Test polynomials with unequal length
poly3 := polynomial{
curve.Scalar.New(1),
curve.Scalar.New(2),
}
output2, err := poly1.Mul(poly3)
require.NoError(t, err)
require.NotNil(t, output2)
result2 := []curves.Scalar{
curve.Scalar.New(3),
curve.Scalar.New(8),
curve.Scalar.New(5),
curve.Scalar.New(2),
}
require.Equal(t, len(output2), 4)
for i := 0; i < len(output2); i++ {
require.Equal(t, output2[i].Bytes(), result2[i].Bytes())
}
}
func TestMulAssignPolyError(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
poly1 := polynomial{
nil,
curve.Scalar.New(2),
curve.Scalar.New(1),
}
poly2 := polynomial{
curve.Scalar.New(1),
curve.Scalar.New(2),
curve.Scalar.New(3),
}
output, err := poly1.Mul(poly2)
require.Error(t, err)
require.Nil(t, output)
}
func TestMulValueAssignPoly(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
poly := polynomial{
curve.Scalar.New(3),
curve.Scalar.New(2),
curve.Scalar.New(1),
}
rhs := curve.Scalar.New(3)
output, err := poly.MulScalar(rhs)
require.NoError(t, err)
require.NotNil(t, output)
coefficients2 := []curves.Scalar{
curve.Scalar.New(9),
curve.Scalar.New(6),
curve.Scalar.New(3),
}
for i := 0; i < len(coefficients2); i++ {
require.Equal(t, output[i].Bytes(), coefficients2[i].Bytes())
}
}
func TestMulValueAssignPolyError(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
poly := polynomial{
nil,
curve.Scalar.New(2),
curve.Scalar.New(1),
}
rhs := curve.Scalar.New(3)
output, err := poly.MulScalar(rhs)
require.Error(t, err)
require.Nil(t, output)
}