ceremonyclient/nekryptology/pkg/accumulator/accumulator_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 TestNewAccumulator100(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
var seed [32]byte
key, err := new(SecretKey).New(curve, seed[:])
require.NoError(t, err)
require.NotNil(t, key)
acc, err := new(Accumulator).New(curve)
require.NoError(t, err)
require.NotNil(t, acc)
require.Equal(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
}
func TestNewAccumulator10K(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
var seed [32]byte
key, err := new(SecretKey).New(curve, seed[:])
require.NoError(t, err)
require.NotNil(t, key)
acc, err := new(Accumulator).New(curve)
require.NoError(t, err)
require.NotNil(t, acc)
require.Equal(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
}
func TestNewAccumulator10M(t *testing.T) {
// Initiating 10M values takes time
if testing.Short() {
t.Skip("skipping test in short mode.")
}
curve := curves.BLS12381(&curves.PointBls12381G1{})
var seed [32]byte
key, err := new(SecretKey).New(curve, seed[:])
require.NoError(t, err)
require.NotNil(t, key)
acc, err := new(Accumulator).New(curve)
require.NoError(t, err)
require.NotNil(t, acc)
require.Equal(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
}
func TestWithElements(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
var seed [32]byte
key, _ := new(SecretKey).New(curve, seed[:])
element1 := curve.Scalar.Hash([]byte("value1"))
element2 := curve.Scalar.Hash([]byte("value2"))
elements := []Element{element1, element2}
newAcc, err := new(Accumulator).WithElements(curve, key, elements)
require.NoError(t, err)
require.NotNil(t, newAcc)
require.NotEqual(t, newAcc.value.ToAffineCompressed(), curve.PointG1.Identity().ToAffineCompressed())
require.NotEqual(t, newAcc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
_, _ = newAcc.Remove(key, element1)
_, _ = newAcc.Remove(key, element2)
require.Equal(t, newAcc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
}
func TestAdd(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
var seed [32]byte
key, err := new(SecretKey).New(curve, seed[:])
require.NoError(t, err)
require.NotNil(t, key)
acc := &Accumulator{curve.PointG1.Generator()}
_, _ = acc.New(curve)
require.NoError(t, err)
require.NotNil(t, acc)
element := curve.Scalar.Hash([]byte("value1"))
require.NoError(t, err)
require.NotNil(t, element)
_, _ = acc.Add(key, element)
require.NotEqual(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
}
func TestRemove(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
var seed [32]byte
key, err := new(SecretKey).New(curve, seed[:])
require.NoError(t, err)
require.NotNil(t, key)
acc, err := new(Accumulator).New(curve)
require.NoError(t, err)
require.NotNil(t, acc)
require.Equal(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
element := curve.Scalar.Hash([]byte("value1"))
require.NoError(t, err)
require.NotNil(t, element)
// add element
_, _ = acc.Add(key, element)
require.NotEqual(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
// remove element
acc, err = acc.Remove(key, element)
require.NoError(t, err)
require.Equal(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
}
func TestAddElements(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
var seed [32]byte
key, err := new(SecretKey).New(curve, seed[:])
require.NoError(t, err)
require.NotNil(t, key)
acc := &Accumulator{curve.PointG1.Generator()}
_, _ = acc.New(curve)
require.NoError(t, err)
require.NotNil(t, acc)
require.Equal(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
element1 := curve.Scalar.Hash([]byte("value1"))
element2 := curve.Scalar.Hash([]byte("value2"))
element3 := curve.Scalar.Hash([]byte("value3"))
elements := []Element{element1, element2, element3}
acc, err = acc.AddElements(key, elements)
require.NoError(t, err)
require.NotEqual(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
}
func TestAccumulatorMarshal(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
point := curve.PointG1.Generator().Mul(curve.Scalar.New(2))
data, err := Accumulator{point}.MarshalBinary()
require.NoError(t, err)
require.NotNil(t, data)
// element cannot be empty
_, err = Accumulator{}.MarshalBinary()
require.Error(t, err)
e := &Accumulator{curve.PointG1.Generator()}
_ = e.UnmarshalBinary(data)
require.True(t, e.value.Equal(point))
}
func TestUpdate(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G1{})
var seed [32]byte
key, err := new(SecretKey).New(curve, seed[:])
require.NoError(t, err)
require.NotNil(t, key)
acc, err := new(Accumulator).New(curve)
require.NoError(t, err)
require.NotNil(t, acc)
require.Equal(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
element1 := curve.Scalar.Hash([]byte("value1"))
element2 := curve.Scalar.Hash([]byte("value2"))
element3 := curve.Scalar.Hash([]byte("value3"))
elements := []Element{element1, element2, element3}
acc, _, err = acc.Update(key, elements, nil)
require.NoError(t, err)
require.NotEqual(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
acc, _, err = acc.Update(key, nil, elements)
require.NoError(t, err)
require.Equal(t, acc.value.ToAffineCompressed(), curve.PointG1.Generator().ToAffineCompressed())
}