ceremonyclient/nekryptology/pkg/verenc/elgamal/encryption_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 elgamal
import (
"testing"
"github.com/stretchr/testify/require"
"source.quilibrium.com/quilibrium/monorepo/nekryptology/pkg/core/curves"
)
func TestEncryptionKeyEncrypt(t *testing.T) {
k256 := curves.K256()
domain := []byte("TestEncryptionKeyEncrypt")
ek, dk, err := NewKeys(k256)
require.NoError(t, err)
testMsgs := []curves.Scalar{
k256.Scalar.New(0),
k256.Scalar.New(10),
k256.Scalar.New(20),
k256.Scalar.New(30),
k256.Scalar.New(40),
k256.Scalar.New(50),
k256.Scalar.New(100),
k256.Scalar.New(1000),
k256.Scalar.New(10000),
k256.Scalar.New(100000),
k256.Scalar.New(1000000),
}
for _, msg := range testMsgs {
msgBytes := msg.Bytes()
require.NoError(t, err)
cs, _, err := ek.VerifiableEncrypt(msgBytes, &EncryptParams{
Domain: domain,
MessageIsHashed: true,
})
require.NoError(t, err)
_, m, err := dk.VerifiableDecryptWithDomain(domain, cs)
require.NoError(t, err)
require.Equal(t, m.Cmp(msg), 0)
}
}
func TestEncryptionKeyEncryptInvalidMessages(t *testing.T) {
k256 := curves.K256()
domain := []byte("TestEncryptionKeyEncryptInvalidMessages")
ek, dk, err := NewKeys(k256)
require.NoError(t, err)
// nil message
_, _, err = ek.VerifiableEncrypt(nil, &EncryptParams{
Domain: domain,
MessageIsHashed: true,
})
require.Error(t, err)
msg := k256.Scalar.New(1234567890)
msgBytes := msg.Bytes()
cs, _, err := ek.VerifiableEncrypt(msgBytes, &EncryptParams{
Domain: domain,
MessageIsHashed: true,
})
require.NoError(t, err)
// invalid domain i.e. not the same domain used to encrypt
_, _, err = dk.VerifiableDecryptWithDomain([]byte{}, cs)
require.Error(t, err)
}
func TestEncryptionKeyMarshaling(t *testing.T) {
k256 := curves.K256()
ek, _, err := NewKeys(k256)
require.NoError(t, err)
bin, err := ek.MarshalBinary()
require.NoError(t, err)
ekClone := new(EncryptionKey)
err = ekClone.UnmarshalBinary(bin)
require.NoError(t, err)
require.True(t, ek.Value.Equal(ekClone.Value))
}