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// Copyright 2018 The dexon-consensus-core Authors
// This file is part of the dexon-consensus-core library.
//
// The dexon-consensus-core library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus-core library is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus-core library. If not, see
// <http://www.gnu.org/licenses/>.
package ecdsa
import (
"testing"
"github.com/dexon-foundation/dexon-consensus-core/common"
"github.com/dexon-foundation/dexon-consensus-core/core/crypto"
"github.com/stretchr/testify/suite"
)
type ETHCryptoTestSuite struct {
suite.Suite
}
func (s *ETHCryptoTestSuite) TestSignature() {
prv1, err := NewPrivateKey()
s.Require().Nil(err)
hash1 := common.NewRandomHash()
hash2 := common.NewRandomHash()
// Test that same private key should produce same signature.
sig11, err := prv1.Sign(hash1)
s.Require().Nil(err)
sig112, err := prv1.Sign(hash1)
s.Require().Nil(err)
s.Equal(sig11, sig112)
// Test that different private key should produce different signature.
prv2, err := NewPrivateKey()
s.Require().Nil(err)
sig21, err := prv2.Sign(hash1)
s.Require().Nil(err)
s.NotEqual(sig11, sig21)
// Test that different hash should produce different signature.
sig12, err := prv1.Sign(hash2)
s.Require().Nil(err)
s.NotEqual(sig11, sig12)
// Test VerifySignature with correct public key.
pub1, ok := prv1.PublicKey().(*PublicKey)
s.Require().True(ok)
s.True(pub1.VerifySignature(hash1, sig11))
// Test VerifySignature with wrong hash.
s.False(pub1.VerifySignature(hash2, sig11))
// Test VerifySignature with wrong signature.
s.False(pub1.VerifySignature(hash1, sig21))
// Test VerifySignature with wrong public key.
pub2 := prv2.PublicKey()
s.False(pub2.VerifySignature(hash1, sig11))
}
func (s *ETHCryptoTestSuite) TestSigToPub() {
prv, err := NewPrivateKey()
s.Require().Nil(err)
data := "DEXON is infinitely scalable and low-latency."
hash := crypto.Keccak256Hash([]byte(data))
sigmsg, err := prv.Sign(hash)
s.Require().Nil(err)
pubkey, err := SigToPub(hash, sigmsg)
s.Require().Nil(err)
s.Equal(pubkey, prv.PublicKey())
}
func TestCrypto(t *testing.T) {
suite.Run(t, new(ETHCryptoTestSuite))
}
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