ceremonyclient/nekryptology/pkg/accumulator/key_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 TestSecretKeyMarshal(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
data, err := SecretKey{curve.Scalar.One()}.MarshalBinary()
require.NoError(t, err)
require.NotNil(t, data)
e := &SecretKey{curve.Scalar.New(2)}
err = e.UnmarshalBinary(data)
require.NoError(t, err)
require.Equal(t, e.value.Bytes(), curve.Scalar.One().Bytes())
// element cannot be empty
_, err = SecretKey{}.MarshalBinary()
require.Error(t, err)
}
func TestPublicKeyMarshal(t *testing.T) {
// Actually test both toBytes() and from()
curve := curves.BLS12381(&curves.PointBls12381G1{})
sk := &SecretKey{curve.Scalar.New(3)}
pk, _ := sk.GetPublicKey(curve)
pkBytes, err := pk.MarshalBinary()
require.NoError(t, err)
require.NotNil(t, pkBytes)
pk2 := &PublicKey{}
err = pk2.UnmarshalBinary(pkBytes)
require.NoError(t, err)
require.True(t, pk.value.Equal(pk2.value))
}
func TestBatch(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
var seed [32]byte
sk, _ := new(SecretKey).New(curve, seed[:])
element1 := curve.Scalar.Hash([]byte("value1"))
element2 := curve.Scalar.Hash([]byte("value2"))
elements := []Element{element1, element2}
add, err := sk.BatchAdditions(elements)
require.NoError(t, err)
require.NotNil(t, add)
del, err := sk.BatchDeletions(elements)
require.NoError(t, err)
require.NotNil(t, del)
result := add.Mul(del)
require.Equal(t, result, curve.Scalar.One())
g1 := curve.PointG1.Generator()
acc := g1.Mul(add)
require.NotEqual(t, acc, g1)
acc = acc.Mul(del)
require.Equal(t, acc.ToAffineCompressed(), g1.ToAffineCompressed())
acc2 := g1.Mul(result)
require.True(t, acc2.Equal(g1))
}
func TestCoefficient(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
sk, _ := new(SecretKey).New(curve, []byte("1234567890"))
element1 := curve.Scalar.Hash([]byte("value1"))
element2 := curve.Scalar.Hash([]byte("value2"))
element3 := curve.Scalar.Hash([]byte("value3"))
element4 := curve.Scalar.Hash([]byte("value4"))
element5 := curve.Scalar.Hash([]byte("value5"))
elements := []Element{element1, element2, element3, element4, element5}
coefficients, err := sk.CreateCoefficients(elements[0:2], elements[2:5])
require.NoError(t, err)
require.Equal(t, len(coefficients), 3)
}