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package common
import (
"encoding/hex"
"testing"
ethCommon "github.com/ethereum/go-ethereum/common"
ethCrypto "github.com/ethereum/go-ethereum/crypto"
"github.com/iden3/go-iden3-crypto/babyjub"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestAccountCreationAuthSignVerify(t *testing.T) {
// Ethereum key
ethSk, err := ethCrypto.HexToECDSA("fad9c8855b740a0b7ed4c221dbad0f33a83a49cad6b3fe8d5817ac83d38b6a19")
require.NoError(t, err)
ethAddr := ethCrypto.PubkeyToAddress(ethSk.PublicKey)
// BabyJubJub key
var sk babyjub.PrivateKey
_, err = hex.Decode(sk[:],
[]byte("0001020304050607080900010203040506070809000102030405060708090001"))
require.NoError(t, err)
chainID := uint16(0)
hermezContractAddr := ethCommon.HexToAddress("0xc344E203a046Da13b0B4467EB7B3629D0C99F6E6")
a := AccountCreationAuth{
EthAddr: ethAddr,
BJJ: sk.Public().Compress(),
}
// Sign using the Sign function (stores signature in a.Signature)
err = a.Sign(func(hash []byte) ([]byte, error) {
return ethCrypto.Sign(hash, ethSk)
}, chainID, hermezContractAddr)
require.NoError(t, err)
// Hash and sign manually and compare the generated signature
hash, err := a.HashToSign(chainID, hermezContractAddr)
require.NoError(t, err)
assert.Equal(t, "4f8df75e96fdce1ac90bb2f8d81c42047600f85bfcef80ce3b91c2a2afc58c1e",
hex.EncodeToString(hash))
sig, err := ethCrypto.Sign(hash, ethSk)
require.NoError(t, err)
sig[64] += 27
assert.Equal(t, sig, a.Signature)
assert.True(t, a.VerifySignature(chainID, hermezContractAddr))
}
func TestKeccak256JSComp(t *testing.T) {
// check keccak256 compatible with js version
h := ethCrypto.Keccak256([]byte("test"))
assert.Equal(t, "9c22ff5f21f0b81b113e63f7db6da94fedef11b2119b4088b89664fb9a3cb658",
hex.EncodeToString(h))
}
func TestAccountCreationAuthJSComp(t *testing.T) {
// The values of this test have been tested with the js implementation
type testVector struct {
ethSk string
expectedAddress string
pkCompStr string
chainID uint16
hermezContractAddr string
toHashExpected string
hashExpected string
sigExpected string
}
var tvs []testVector
tv0 := testVector{
ethSk: "0000000000000000000000000000000000000000000000000000000000000001",
expectedAddress: "0x7E5F4552091A69125d5DfCb7b8C2659029395Bdf",
pkCompStr: "21b0a1688b37f77b1d1d5539ec3b826db5ac78b2513f574a04c50a7d4f8246d7",
chainID: uint16(4),
hermezContractAddr: "0x7e5f4552091a69125d5dfcb7b8c2659029395bdf",
toHashExpected: "19457468657265756d205369676e6564204d6573736167653a0a3132304920617574686f72697a65207468697320626162796a75626a7562206b657920666f72206865726d657a20726f6c6c7570206163636f756e74206372656174696f6e21b0a1688b37f77b1d1d5539ec3b826db5ac78b2513f574a04c50a7d4f8246d700047e5f4552091a69125d5dfcb7b8c2659029395bdf",
hashExpected: "39afea52d843a4de905b6b5ebb0ee8c678141f711d96d9b429c4aec10ef9911f",
sigExpected: "73d10d6ecf06ee8a5f60ac90f06b78bef9c650f414ba3ac73e176dc32e896159147457e9c86f0b4bd60fdaf2c0b2aec890a7df993d69a4805e242a6b845ebf231c",
}
tv1 := testVector{
ethSk: "0000000000000000000000000000000000000000000000000000000000000002",
expectedAddress: "0x2B5AD5c4795c026514f8317c7a215E218DcCD6cF",
pkCompStr: "093985b1993d9f743f9d7d943ed56f38601cb8b196db025f79650c4007c3054d",
chainID: uint16(0),
hermezContractAddr: "0x2b5ad5c4795c026514f8317c7a215e218dccd6cf",
toHashExpected: "19457468657265756d205369676e6564204d6573736167653a0a3132304920617574686f72697a65207468697320626162796a75626a7562206b657920666f72206865726d657a20726f6c6c7570206163636f756e74206372656174696f6e093985b1993d9f743f9d7d943ed56f38601cb8b196db025f79650c4007c3054d00002b5ad5c4795c026514f8317c7a215e218dccd6cf",
hashExpected: "89a3895993a4736232212e59566294feb3da227af44375daf3307dcad5451d5d",
sigExpected: "bb4156156c705494ad5f99030342c64657e51e2994750f92125717c40bf56ad632044aa6bd00979feea92c417b552401e65fe5f531f15010d9d1c278da8be1df1b",
}
tv2 := testVector{
ethSk: "c5e8f61d1ab959b397eecc0a37a6517b8e67a0e7cf1f4bce5591f3ed80199122",
expectedAddress: "0xc783df8a850f42e7F7e57013759C285caa701eB6",
pkCompStr: "22870c1bcc451396202d62f566026eab8e438c6c91decf8ddf63a6c162619b52",
chainID: uint16(31337), // =0x7a69
hermezContractAddr: "0xf4e77E5Da47AC3125140c470c71cBca77B5c638c",
toHashExpected: "19457468657265756d205369676e6564204d6573736167653a0a3132304920617574686f72697a65207468697320626162796a75626a7562206b657920666f72206865726d657a20726f6c6c7570206163636f756e74206372656174696f6e22870c1bcc451396202d62f566026eab8e438c6c91decf8ddf63a6c162619b527a69f4e77e5da47ac3125140c470c71cbca77b5c638c",
hashExpected: "4f6ead01278ba4597d4720e37482f585a713497cea994a95209f4c57a963b4a7",
sigExpected: "43b5818802a137a72a190c1d8d767ca507f7a4804b1b69b5e055abf31f4f2b476c80bb1ba63260d95610f6f831420d32130e7f22fec5d76e16644ddfcedd0d441c",
}
tvs = append(tvs, tv0)
tvs = append(tvs, tv1)
tvs = append(tvs, tv2)
for _, tv := range tvs {
// Ethereum key
ethSk, err := ethCrypto.HexToECDSA(tv.ethSk)
require.NoError(t, err)
ethAddr := ethCrypto.PubkeyToAddress(ethSk.PublicKey)
assert.Equal(t, tv.expectedAddress, ethAddr.Hex())
// BabyJubJub key
pkCompStr := tv.pkCompStr
pkComp, err := BJJFromStringWithChecksum(pkCompStr)
require.NoError(t, err)
chainID := tv.chainID
hermezContractAddr := ethCommon.HexToAddress(tv.hermezContractAddr)
a := AccountCreationAuth{
EthAddr: ethAddr,
BJJ: pkComp,
}
toHash := a.toHash(chainID, hermezContractAddr)
assert.Equal(t, tv.toHashExpected,
hex.EncodeToString(toHash))
assert.Equal(t, 120+len(EthMsgPrefix)+len([]byte("120")), len(toHash))
msg, err := a.HashToSign(chainID, hermezContractAddr)
require.NoError(t, err)
assert.Equal(t, tv.hashExpected,
hex.EncodeToString(msg))
// sign AccountCreationAuth with eth key
sig, err := ethCrypto.Sign(msg, ethSk)
require.NoError(t, err)
sig[64] += 27
assert.Equal(t, tv.sigExpected,
hex.EncodeToString(sig))
a.Signature = sig
assert.True(t, a.VerifySignature(chainID, hermezContractAddr))
}
}