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package crypto
import (
"fmt"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
data "github.com/tendermint/go-wire/data"
wire "github.com/tendermint/go-wire"
)
type byter interface {
Bytes() []byte
}
// go to wire encoding and back
func checkWire(t *testing.T, in byter, reader interface{}, typ byte, size int) {
// test to and from binary
bin, err := data.ToWire(in)
require.Nil(t, err, "%+v", err)
assert.Equal(t, typ, bin[0])
// make sure this is compatible with current (Bytes()) encoding
assert.Equal(t, in.Bytes(), bin)
// make sure we have the expected length
assert.Equal(t, size, len(bin))
err = data.FromWire(bin, reader)
require.Nil(t, err, "%+v", err)
}
// go to json encoding and back
func checkJSON(t *testing.T, in interface{}, reader interface{}, typ string) {
// test to and from binary
js, err := data.ToJSON(in)
require.Nil(t, err, "%+v", err)
styp := `"` + typ + `"`
assert.True(t, strings.Contains(string(js), styp))
err = data.FromJSON(js, reader)
require.Nil(t, err, "%+v", err)
// also check text format
text, err := data.ToText(in)
require.Nil(t, err, "%+v", err)
parts := strings.Split(text, ":")
require.Equal(t, 2, len(parts))
// make sure the first part is the typ string
assert.Equal(t, typ, parts[0])
// and the data is also present in the json
assert.True(t, strings.Contains(string(js), parts[1]))
}
// make sure go-wire json can still figure this out...
func checkWireJSON(t *testing.T, in interface{}, reader interface{}, typ byte) {
// test to and from binary
var err error
js := wire.JSONBytes(in)
btyp := fmt.Sprintf("[%d,", typ)
assert.True(t, strings.HasPrefix(string(js), btyp), string(js))
wire.ReadJSON(reader, js, &err)
require.Nil(t, err, "%+v", err)
}
func TestKeyEncodings(t *testing.T) {
cases := []struct {
privKey PrivKey
keyType byte
keyName string
// 1 (type byte) + size of byte array
privSize, pubSize int
}{
{
privKey: GenPrivKeyEd25519().Wrap(),
keyType: TypeEd25519,
keyName: NameEd25519,
privSize: 65,
pubSize: 33,
},
{
privKey: GenPrivKeySecp256k1().Wrap(),
keyType: TypeSecp256k1,
keyName: NameSecp256k1,
privSize: 33,
pubSize: 34,
},
}
for _, tc := range cases {
// check (de/en)codings of private key
var priv2, priv3, priv4 PrivKey
checkWire(t, tc.privKey, &priv2, tc.keyType, tc.privSize)
assert.EqualValues(t, tc.privKey, priv2)
checkJSON(t, tc.privKey, &priv3, tc.keyName)
assert.EqualValues(t, tc.privKey, priv3)
checkWireJSON(t, tc.privKey, &priv4, tc.keyType)
assert.EqualValues(t, tc.privKey, priv4)
// check (de/en)codings of public key
pubKey := tc.privKey.PubKey()
var pub2, pub3, pub4 PubKey
checkWire(t, pubKey, &pub2, tc.keyType, tc.pubSize)
assert.EqualValues(t, pubKey, pub2)
checkJSON(t, pubKey, &pub3, tc.keyName)
assert.EqualValues(t, pubKey, pub3)
checkWireJSON(t, pubKey, &pub4, tc.keyType)
assert.EqualValues(t, pubKey, pub4)
}
}
func toFromJSON(t *testing.T, in interface{}, recvr interface{}) {
js, err := data.ToJSON(in)
require.Nil(t, err, "%+v", err)
err = data.FromJSON(js, recvr)
require.Nil(t, err, "%+v", err)
}
func TestNilEncodings(t *testing.T) {
// make sure sigs are okay with nil
var a, b Signature
toFromJSON(t, a, &b)
assert.EqualValues(t, a, b)
// make sure sigs are okay with nil
var c, d PubKey
toFromJSON(t, c, &d)
assert.EqualValues(t, c, d)
// make sure sigs are okay with nil
var e, f PrivKey
toFromJSON(t, e, &f)
assert.EqualValues(t, e, f)
}
type SigMessage struct {
Key PubKey
Sig Signature
}
func (s SigMessage) Bytes() []byte {
return wire.BinaryBytes(s)
}
func TestEmbededWireEncodings(t *testing.T) {
assert := assert.New(t)
cases := []struct {
privKey PrivKey
keyType byte
keyName string
size int // pub + sig size
}{
{
privKey: GenPrivKeyEd25519().Wrap(),
keyType: TypeEd25519,
keyName: NameEd25519,
size: 2 + 32 + 64,
},
// {
// privKey: GenPrivKeySecp256k1().Wrap(),
// keyType: TypeSecp256k1,
// keyName: NameSecp256k1,
// size: 2 + 33 + 72, // ugh, either 72 or 73 depending....
// },
}
payload := randBytes(20)
for i, tc := range cases {
pubKey := tc.privKey.PubKey()
sig := tc.privKey.Sign(payload)
assert.True(pubKey.VerifyBytes(payload, sig), "%d", i)
msg := SigMessage{
Key: pubKey,
Sig: sig,
}
var msg2 SigMessage
checkWire(t, msg, &msg2, tc.keyType, tc.size)
}
}