ceremonyclient/nekryptology/pkg/verenc/camshoup/proof_enc_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 camshoup
import (
"math/big"
"testing"
"github.com/stretchr/testify/require"
)
func TestEncryptionKeyEncryptAndProve(t *testing.T) {
group, err := NewPaillierGroupWithPrimes(testP, testQ)
require.NoError(t, err)
domain := []byte("TestEncryptionKeyEncryptAndProve")
ek, dk, err := NewKeys(1, group)
require.NoError(t, err)
testMsgs := []*big.Int{
big.NewInt(0),
big.NewInt(10),
big.NewInt(20),
big.NewInt(30),
big.NewInt(40),
big.NewInt(50),
big.NewInt(100),
big.NewInt(1000),
big.NewInt(10000),
big.NewInt(100000),
big.NewInt(1000000),
}
for _, msg := range testMsgs {
cs, proof, err := ek.EncryptAndProve(domain, []*big.Int{msg})
require.NoError(t, err)
err = ek.VerifyEncryptProof(domain, cs, proof)
require.NoError(t, err)
dmsg, err := dk.Decrypt(domain, cs)
require.NoError(t, err)
require.Equal(t, 0, msg.Cmp(dmsg[0]))
}
}
func TestEncryptionKeyEncryptAndProveBlindings(t *testing.T) {
group, err := NewPaillierGroupWithPrimes(testP, testQ)
require.NoError(t, err)
domain := []byte("TestEncryptionKeyEncryptAndProveBlindings")
ek, dk, err := NewKeys(1, group)
require.NoError(t, err)
testMsgs := []*struct {
test, blinding *big.Int
}{
{big.NewInt(0), big.NewInt(1)},
{big.NewInt(10), big.NewInt(2)},
{big.NewInt(20), big.NewInt(3)},
{big.NewInt(30), big.NewInt(4)},
{big.NewInt(40), big.NewInt(5)},
{big.NewInt(50), big.NewInt(6)},
{big.NewInt(100), big.NewInt(7)},
{big.NewInt(1000), big.NewInt(8)},
{big.NewInt(10000), big.NewInt(9)},
{big.NewInt(100000), big.NewInt(10)},
{big.NewInt(1000000), big.NewInt(11)},
}
for _, msg := range testMsgs {
cs, proof, err := ek.EncryptAndProveBlindings(domain, []*big.Int{msg.test}, []*big.Int{msg.blinding})
require.NoError(t, err)
err = ek.VerifyEncryptProof(domain, cs, proof)
require.NoError(t, err)
dmsg, err := dk.Decrypt(domain, cs)
require.NoError(t, err)
require.Equal(t, 0, msg.test.Cmp(dmsg[0]))
}
}
func TestEncryptionKeyEncryptAndProveInvalidInputs(t *testing.T) {
group, err := NewPaillierGroupWithPrimes(testP, testQ)
require.NoError(t, err)
domain := []byte("TestEncryptionKeyEncryptAndProveInvalidInputs")
ek, _, err := NewKeys(1, group)
require.NoError(t, err)
_, _, err = ek.EncryptAndProve(domain, nil)
require.Error(t, err)
_, _, err = ek.EncryptAndProve(domain, []*big.Int{})
require.Error(t, err)
_, _, err = ek.EncryptAndProveBlindings(domain, []*big.Int{big.NewInt(1)}, nil)
require.Error(t, err)
_, _, err = ek.EncryptAndProveBlindings(domain, []*big.Int{big.NewInt(2)}, []*big.Int{})
require.Error(t, err)
_, _, err = ek.EncryptAndProveBlindings(domain, []*big.Int{big.NewInt(2)}, []*big.Int{big.NewInt(0)})
require.Error(t, err)
}