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btcd/btcec/pubkey_test.go
Olaoluwa Osuntokun 87e8fe92c9
btcec: convert package into go module, alias to dcrec 
In this commit, we turn the package into a new Go module (version 2),
and then port over the current set of types and functions to mainly
alias to the more optimized and maintained dcrec variant.

Taking a look at the benchmarks, most operations other than
normalization (which IIRC is a bit slower now due to constant time
fixes) enjoy some nice speeds up:
```
benchcmp is deprecated in favor of benchstat: https://pkg.go.dev/golang.org/x/perf/cmd/benchstat
benchmark                            old ns/op     new ns/op     delta
BenchmarkAddJacobian-8               464           328           -29.20%
BenchmarkAddJacobianNotZOne-8        1138          372           -67.27%
BenchmarkScalarBaseMult-8            47336         31531         -33.39%
BenchmarkScalarBaseMultLarge-8       42465         32057         -24.51%
BenchmarkScalarMult-8                123355        117579        -4.68%
BenchmarkNAF-8                       582           168           -71.12%
BenchmarkSigVerify-8                 175414        120794        -31.14%
BenchmarkFieldNormalize-8            23.8          24.4          +2.39%
BenchmarkParseCompressedPubKey-8     24282         10907         -55.08%
```
2022-01-26 16:10:14 -08:00

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// Copyright (c) 2013-2016 The btcsuite developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package btcec
import (
"bytes"
"testing"
"github.com/davecgh/go-spew/spew"
)
type pubKeyTest struct {
name string
key []byte
format byte
isValid bool
}
var pubKeyTests = []pubKeyTest{
// pubkey from bitcoin blockchain tx
// 0437cd7f8525ceed2324359c2d0ba26006d92d85
{
name: "uncompressed ok",
key: []byte{0x04, 0x11, 0xdb, 0x93, 0xe1, 0xdc, 0xdb, 0x8a,
0x01, 0x6b, 0x49, 0x84, 0x0f, 0x8c, 0x53, 0xbc, 0x1e,
0xb6, 0x8a, 0x38, 0x2e, 0x97, 0xb1, 0x48, 0x2e, 0xca,
0xd7, 0xb1, 0x48, 0xa6, 0x90, 0x9a, 0x5c, 0xb2, 0xe0,
0xea, 0xdd, 0xfb, 0x84, 0xcc, 0xf9, 0x74, 0x44, 0x64,
0xf8, 0x2e, 0x16, 0x0b, 0xfa, 0x9b, 0x8b, 0x64, 0xf9,
0xd4, 0xc0, 0x3f, 0x99, 0x9b, 0x86, 0x43, 0xf6, 0x56,
0xb4, 0x12, 0xa3,
},
isValid: true,
format: pubkeyUncompressed,
},
{
name: "uncompressed x changed",
key: []byte{0x04, 0x15, 0xdb, 0x93, 0xe1, 0xdc, 0xdb, 0x8a,
0x01, 0x6b, 0x49, 0x84, 0x0f, 0x8c, 0x53, 0xbc, 0x1e,
0xb6, 0x8a, 0x38, 0x2e, 0x97, 0xb1, 0x48, 0x2e, 0xca,
0xd7, 0xb1, 0x48, 0xa6, 0x90, 0x9a, 0x5c, 0xb2, 0xe0,
0xea, 0xdd, 0xfb, 0x84, 0xcc, 0xf9, 0x74, 0x44, 0x64,
0xf8, 0x2e, 0x16, 0x0b, 0xfa, 0x9b, 0x8b, 0x64, 0xf9,
0xd4, 0xc0, 0x3f, 0x99, 0x9b, 0x86, 0x43, 0xf6, 0x56,
0xb4, 0x12, 0xa3,
},
isValid: false,
},
{
name: "uncompressed y changed",
key: []byte{0x04, 0x11, 0xdb, 0x93, 0xe1, 0xdc, 0xdb, 0x8a,
0x01, 0x6b, 0x49, 0x84, 0x0f, 0x8c, 0x53, 0xbc, 0x1e,
0xb6, 0x8a, 0x38, 0x2e, 0x97, 0xb1, 0x48, 0x2e, 0xca,
0xd7, 0xb1, 0x48, 0xa6, 0x90, 0x9a, 0x5c, 0xb2, 0xe0,
0xea, 0xdd, 0xfb, 0x84, 0xcc, 0xf9, 0x74, 0x44, 0x64,
0xf8, 0x2e, 0x16, 0x0b, 0xfa, 0x9b, 0x8b, 0x64, 0xf9,
0xd4, 0xc0, 0x3f, 0x99, 0x9b, 0x86, 0x43, 0xf6, 0x56,
0xb4, 0x12, 0xa4,
},
isValid: false,
},
{
name: "uncompressed claims compressed",
key: []byte{0x03, 0x11, 0xdb, 0x93, 0xe1, 0xdc, 0xdb, 0x8a,
0x01, 0x6b, 0x49, 0x84, 0x0f, 0x8c, 0x53, 0xbc, 0x1e,
0xb6, 0x8a, 0x38, 0x2e, 0x97, 0xb1, 0x48, 0x2e, 0xca,
0xd7, 0xb1, 0x48, 0xa6, 0x90, 0x9a, 0x5c, 0xb2, 0xe0,
0xea, 0xdd, 0xfb, 0x84, 0xcc, 0xf9, 0x74, 0x44, 0x64,
0xf8, 0x2e, 0x16, 0x0b, 0xfa, 0x9b, 0x8b, 0x64, 0xf9,
0xd4, 0xc0, 0x3f, 0x99, 0x9b, 0x86, 0x43, 0xf6, 0x56,
0xb4, 0x12, 0xa3,
},
isValid: false,
},
{
name: "uncompressed as hybrid ok",
key: []byte{0x07, 0x11, 0xdb, 0x93, 0xe1, 0xdc, 0xdb, 0x8a,
0x01, 0x6b, 0x49, 0x84, 0x0f, 0x8c, 0x53, 0xbc, 0x1e,
0xb6, 0x8a, 0x38, 0x2e, 0x97, 0xb1, 0x48, 0x2e, 0xca,
0xd7, 0xb1, 0x48, 0xa6, 0x90, 0x9a, 0x5c, 0xb2, 0xe0,
0xea, 0xdd, 0xfb, 0x84, 0xcc, 0xf9, 0x74, 0x44, 0x64,
0xf8, 0x2e, 0x16, 0x0b, 0xfa, 0x9b, 0x8b, 0x64, 0xf9,
0xd4, 0xc0, 0x3f, 0x99, 0x9b, 0x86, 0x43, 0xf6, 0x56,
0xb4, 0x12, 0xa3,
},
isValid: true,
format: pubkeyHybrid,
},
{
name: "uncompressed as hybrid wrong",
key: []byte{0x06, 0x11, 0xdb, 0x93, 0xe1, 0xdc, 0xdb, 0x8a,
0x01, 0x6b, 0x49, 0x84, 0x0f, 0x8c, 0x53, 0xbc, 0x1e,
0xb6, 0x8a, 0x38, 0x2e, 0x97, 0xb1, 0x48, 0x2e, 0xca,
0xd7, 0xb1, 0x48, 0xa6, 0x90, 0x9a, 0x5c, 0xb2, 0xe0,
0xea, 0xdd, 0xfb, 0x84, 0xcc, 0xf9, 0x74, 0x44, 0x64,
0xf8, 0x2e, 0x16, 0x0b, 0xfa, 0x9b, 0x8b, 0x64, 0xf9,
0xd4, 0xc0, 0x3f, 0x99, 0x9b, 0x86, 0x43, 0xf6, 0x56,
0xb4, 0x12, 0xa3,
},
isValid: false,
},
// from tx 0b09c51c51ff762f00fb26217269d2a18e77a4fa87d69b3c363ab4df16543f20
{
name: "compressed ok (ybit = 0)",
key: []byte{0x02, 0xce, 0x0b, 0x14, 0xfb, 0x84, 0x2b, 0x1b,
0xa5, 0x49, 0xfd, 0xd6, 0x75, 0xc9, 0x80, 0x75, 0xf1,
0x2e, 0x9c, 0x51, 0x0f, 0x8e, 0xf5, 0x2b, 0xd0, 0x21,
0xa9, 0xa1, 0xf4, 0x80, 0x9d, 0x3b, 0x4d,
},
isValid: true,
format: pubkeyCompressed,
},
// from tx fdeb8e72524e8dab0da507ddbaf5f88fe4a933eb10a66bc4745bb0aa11ea393c
{
name: "compressed ok (ybit = 1)",
key: []byte{0x03, 0x26, 0x89, 0xc7, 0xc2, 0xda, 0xb1, 0x33,
0x09, 0xfb, 0x14, 0x3e, 0x0e, 0x8f, 0xe3, 0x96, 0x34,
0x25, 0x21, 0x88, 0x7e, 0x97, 0x66, 0x90, 0xb6, 0xb4,
0x7f, 0x5b, 0x2a, 0x4b, 0x7d, 0x44, 0x8e,
},
isValid: true,
format: pubkeyCompressed,
},
{
name: "compressed claims uncompressed (ybit = 0)",
key: []byte{0x04, 0xce, 0x0b, 0x14, 0xfb, 0x84, 0x2b, 0x1b,
0xa5, 0x49, 0xfd, 0xd6, 0x75, 0xc9, 0x80, 0x75, 0xf1,
0x2e, 0x9c, 0x51, 0x0f, 0x8e, 0xf5, 0x2b, 0xd0, 0x21,
0xa9, 0xa1, 0xf4, 0x80, 0x9d, 0x3b, 0x4d,
},
isValid: false,
},
{
name: "compressed claims uncompressed (ybit = 1)",
key: []byte{0x05, 0x26, 0x89, 0xc7, 0xc2, 0xda, 0xb1, 0x33,
0x09, 0xfb, 0x14, 0x3e, 0x0e, 0x8f, 0xe3, 0x96, 0x34,
0x25, 0x21, 0x88, 0x7e, 0x97, 0x66, 0x90, 0xb6, 0xb4,
0x7f, 0x5b, 0x2a, 0x4b, 0x7d, 0x44, 0x8e,
},
isValid: false,
},
{
name: "wrong length)",
key: []byte{0x05},
isValid: false,
},
{
name: "X == P",
key: []byte{0x04, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFC, 0x2F, 0xb2, 0xe0,
0xea, 0xdd, 0xfb, 0x84, 0xcc, 0xf9, 0x74, 0x44, 0x64,
0xf8, 0x2e, 0x16, 0x0b, 0xfa, 0x9b, 0x8b, 0x64, 0xf9,
0xd4, 0xc0, 0x3f, 0x99, 0x9b, 0x86, 0x43, 0xf6, 0x56,
0xb4, 0x12, 0xa3,
},
isValid: false,
},
{
name: "X > P",
key: []byte{0x04, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFD, 0x2F, 0xb2, 0xe0,
0xea, 0xdd, 0xfb, 0x84, 0xcc, 0xf9, 0x74, 0x44, 0x64,
0xf8, 0x2e, 0x16, 0x0b, 0xfa, 0x9b, 0x8b, 0x64, 0xf9,
0xd4, 0xc0, 0x3f, 0x99, 0x9b, 0x86, 0x43, 0xf6, 0x56,
0xb4, 0x12, 0xa3,
},
isValid: false,
},
{
name: "Y == P",
key: []byte{0x04, 0x11, 0xdb, 0x93, 0xe1, 0xdc, 0xdb, 0x8a,
0x01, 0x6b, 0x49, 0x84, 0x0f, 0x8c, 0x53, 0xbc, 0x1e,
0xb6, 0x8a, 0x38, 0x2e, 0x97, 0xb1, 0x48, 0x2e, 0xca,
0xd7, 0xb1, 0x48, 0xa6, 0x90, 0x9a, 0x5c, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF,
0xFF, 0xFC, 0x2F,
},
isValid: false,
},
{
name: "Y > P",
key: []byte{0x04, 0x11, 0xdb, 0x93, 0xe1, 0xdc, 0xdb, 0x8a,
0x01, 0x6b, 0x49, 0x84, 0x0f, 0x8c, 0x53, 0xbc, 0x1e,
0xb6, 0x8a, 0x38, 0x2e, 0x97, 0xb1, 0x48, 0x2e, 0xca,
0xd7, 0xb1, 0x48, 0xa6, 0x90, 0x9a, 0x5c, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF,
0xFF, 0xFD, 0x2F,
},
isValid: false,
},
{
name: "hybrid",
key: []byte{0x06, 0x79, 0xbe, 0x66, 0x7e, 0xf9, 0xdc, 0xbb,
0xac, 0x55, 0xa0, 0x62, 0x95, 0xce, 0x87, 0x0b, 0x07,
0x02, 0x9b, 0xfc, 0xdb, 0x2d, 0xce, 0x28, 0xd9, 0x59,
0xf2, 0x81, 0x5b, 0x16, 0xf8, 0x17, 0x98, 0x48, 0x3a,
0xda, 0x77, 0x26, 0xa3, 0xc4, 0x65, 0x5d, 0xa4, 0xfb,
0xfc, 0x0e, 0x11, 0x08, 0xa8, 0xfd, 0x17, 0xb4, 0x48,
0xa6, 0x85, 0x54, 0x19, 0x9c, 0x47, 0xd0, 0x8f, 0xfb,
0x10, 0xd4, 0xb8,
},
format: pubkeyHybrid,
isValid: true,
},
}
func TestPubKeys(t *testing.T) {
for _, test := range pubKeyTests {
pk, err := ParsePubKey(test.key)
if err != nil {
if test.isValid {
t.Errorf("%s pubkey failed when shouldn't %v",
test.name, err)
}
continue
}
if !test.isValid {
t.Errorf("%s counted as valid when it should fail",
test.name)
continue
}
var pkStr []byte
switch test.format {
case pubkeyUncompressed:
pkStr = pk.SerializeUncompressed()
case pubkeyCompressed:
pkStr = pk.SerializeCompressed()
case pubkeyHybrid:
pkStr = test.key
}
if !bytes.Equal(test.key, pkStr) {
t.Errorf("%s pubkey: serialized keys do not match.",
test.name)
spew.Dump(test.key)
spew.Dump(pkStr)
}
}
}
func TestPublicKeyIsEqual(t *testing.T) {
pubKey1, err := ParsePubKey(
[]byte{0x03, 0x26, 0x89, 0xc7, 0xc2, 0xda, 0xb1, 0x33,
0x09, 0xfb, 0x14, 0x3e, 0x0e, 0x8f, 0xe3, 0x96, 0x34,
0x25, 0x21, 0x88, 0x7e, 0x97, 0x66, 0x90, 0xb6, 0xb4,
0x7f, 0x5b, 0x2a, 0x4b, 0x7d, 0x44, 0x8e,
},
)
if err != nil {
t.Fatalf("failed to parse raw bytes for pubKey1: %v", err)
}
pubKey2, err := ParsePubKey(
[]byte{0x02, 0xce, 0x0b, 0x14, 0xfb, 0x84, 0x2b, 0x1b,
0xa5, 0x49, 0xfd, 0xd6, 0x75, 0xc9, 0x80, 0x75, 0xf1,
0x2e, 0x9c, 0x51, 0x0f, 0x8e, 0xf5, 0x2b, 0xd0, 0x21,
0xa9, 0xa1, 0xf4, 0x80, 0x9d, 0x3b, 0x4d,
},
)
if err != nil {
t.Fatalf("failed to parse raw bytes for pubKey2: %v", err)
}
if !pubKey1.IsEqual(pubKey1) {
t.Fatalf("value of IsEqual is incorrect, %v is "+
"equal to %v", pubKey1, pubKey1)
}
if pubKey1.IsEqual(pubKey2) {
t.Fatalf("value of IsEqual is incorrect, %v is not "+
"equal to %v", pubKey1, pubKey2)
}
}
func TestIsCompressed(t *testing.T) {
for _, test := range pubKeyTests {
isCompressed := IsCompressedPubKey(test.key)
wantCompressed := (test.format == pubkeyCompressed)
if isCompressed != wantCompressed {
t.Fatalf("%s (%x) pubkey: unexpected compressed result, "+
"got %v, want %v", test.name, test.key,
isCompressed, wantCompressed)
}
}
}
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