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/
key_test.go
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/
key_test.go
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package crypto_test
import (
"bytes"
"crypto"
"crypto/ecdsa"
"crypto/ed25519"
"crypto/elliptic"
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"fmt"
"reflect"
"testing"
"github.com/btcsuite/btcd/btcec"
. "github.com/libp2p/go-libp2p-core/crypto"
pb "github.com/libp2p/go-libp2p-core/crypto/pb"
"github.com/libp2p/go-libp2p-core/test"
"github.com/minio/sha256-simd"
)
func TestKeys(t *testing.T) {
for _, typ := range KeyTypes {
testKeyType(typ, t)
}
}
func TestKeyPairFromKey(t *testing.T) {
var (
data = []byte(`hello world`)
hashed = sha256.Sum256(data)
)
privk, err := btcec.NewPrivateKey(btcec.S256())
if err != nil {
t.Fatalf("err generating btcec priv key:\n%v", err)
}
sigK, err := privk.Sign(hashed[:])
if err != nil {
t.Fatalf("err generating btcec sig:\n%v", err)
}
eKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
if err != nil {
t.Fatalf("err generating ecdsa priv key:\n%v", err)
}
sigE, err := eKey.Sign(rand.Reader, hashed[:], crypto.SHA256)
if err != nil {
t.Fatalf("err generating ecdsa sig:\n%v", err)
}
rKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatalf("err generating rsa priv key:\n%v", err)
}
sigR, err := rKey.Sign(rand.Reader, hashed[:], crypto.SHA256)
if err != nil {
t.Fatalf("err generating rsa sig:\n%v", err)
}
_, edKey, err := ed25519.GenerateKey(rand.Reader)
sigEd := ed25519.Sign(edKey, data[:])
if err != nil {
t.Fatalf("err generating ed25519 sig:\n%v", err)
}
for i, tt := range []struct {
in crypto.PrivateKey
typ pb.KeyType
sig []byte
}{
{
eKey,
ECDSA,
sigE,
},
{
privk,
Secp256k1,
sigK.Serialize(),
},
{
rKey,
RSA,
sigR,
},
{
&edKey,
Ed25519,
sigEd,
},
} {
t.Run(fmt.Sprintf("%v", i), func(t *testing.T) {
priv, pub, err := KeyPairFromStdKey(tt.in)
if err != nil {
t.Fatal(err)
}
if priv == nil || pub == nil {
t.Errorf("received nil private key or public key: %v, %v", priv, pub)
}
if priv == nil || priv.Type() != tt.typ {
t.Errorf("want %v; got %v", tt.typ, priv.Type())
}
v, err := pub.Verify(data[:], tt.sig)
if err != nil {
t.Error(err)
}
if !v {
t.Error("signature was not verified")
}
stdPub, err := PubKeyToStdKey(pub)
if stdPub == nil {
t.Errorf("err getting std public key from key: %v", err)
}
var stdPubBytes []byte
switch p := stdPub.(type) {
case *Secp256k1PublicKey:
stdPubBytes, err = p.Raw()
case ed25519.PublicKey:
stdPubBytes = []byte(p)
default:
stdPubBytes, err = x509.MarshalPKIXPublicKey(stdPub)
}
if err != nil {
t.Errorf("Error while marshaling %v key: %v", reflect.TypeOf(stdPub), err)
}
pubBytes, err := pub.Raw()
if err != nil {
t.Errorf("err getting raw bytes for %v key: %v", reflect.TypeOf(pub), err)
}
if !bytes.Equal(stdPubBytes, pubBytes) {
t.Errorf("err roundtripping %v key", reflect.TypeOf(pub))
}
stdPriv, err := PrivKeyToStdKey(priv)
if stdPub == nil {
t.Errorf("err getting std private key from key: %v", err)
}
var stdPrivBytes []byte
switch p := stdPriv.(type) {
case *Secp256k1PrivateKey:
stdPrivBytes, err = p.Raw()
case *ecdsa.PrivateKey:
stdPrivBytes, err = x509.MarshalECPrivateKey(p)
case *ed25519.PrivateKey:
stdPrivBytes = *p
case *rsa.PrivateKey:
stdPrivBytes = x509.MarshalPKCS1PrivateKey(p)
}
if err != nil {
t.Errorf("err marshaling %v key: %v", reflect.TypeOf(stdPriv), err)
}
privBytes, err := priv.Raw()
if err != nil {
t.Errorf("err getting raw bytes for %v key: %v", reflect.TypeOf(priv), err)
}
if !bytes.Equal(stdPrivBytes, privBytes) {
t.Errorf("err roundtripping %v key", reflect.TypeOf(priv))
}
})
}
}
func testKeyType(typ int, t *testing.T) {
bits := 512
if typ == RSA {
bits = 2048
}
sk, pk, err := test.RandTestKeyPair(typ, bits)
if err != nil {
t.Fatal(err)
}
testKeySignature(t, sk)
testKeyEncoding(t, sk)
testKeyEquals(t, sk)
testKeyEquals(t, pk)
}
func testKeySignature(t *testing.T, sk PrivKey) {
pk := sk.GetPublic()
text := make([]byte, 16)
if _, err := rand.Read(text); err != nil {
t.Fatal(err)
}
sig, err := sk.Sign(text)
if err != nil {
t.Fatal(err)
}
valid, err := pk.Verify(text, sig)
if err != nil {
t.Fatal(err)
}
if !valid {
t.Fatal("Invalid signature.")
}
}
func testKeyEncoding(t *testing.T, sk PrivKey) {
skbm, err := MarshalPrivateKey(sk)
if err != nil {
t.Fatal(err)
}
sk2, err := UnmarshalPrivateKey(skbm)
if err != nil {
t.Fatal(err)
}
if !sk.Equals(sk2) {
t.Error("Unmarshaled private key didn't match original.\n")
}
skbm2, err := MarshalPrivateKey(sk2)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(skbm, skbm2) {
t.Error("skb -> marshal -> unmarshal -> skb failed.\n", skbm, "\n", skbm2)
}
pk := sk.GetPublic()
pkbm, err := MarshalPublicKey(pk)
if err != nil {
t.Fatal(err)
}
pk2, err := UnmarshalPublicKey(pkbm)
if err != nil {
t.Fatal(err)
}
if !pk.Equals(pk2) {
t.Error("Unmarshaled public key didn't match original.\n")
}
pkbm2, err := MarshalPublicKey(pk)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(pkbm, pkbm2) {
t.Error("skb -> marshal -> unmarshal -> skb failed.\n", pkbm, "\n", pkbm2)
}
}
func testKeyEquals(t *testing.T, k Key) {
// kb, err := k.Raw()
// if err != nil {
// t.Fatal(err)
// }
if !KeyEqual(k, k) {
t.Fatal("Key not equal to itself.")
}
// bad test, relies on deep internals..
// if !KeyEqual(k, testkey(kb)) {
// t.Fatal("Key not equal to key with same bytes.")
// }
sk, pk, err := test.RandTestKeyPair(RSA, 2048)
if err != nil {
t.Fatal(err)
}
if KeyEqual(k, sk) {
t.Fatal("Keys should not equal.")
}
if KeyEqual(k, pk) {
t.Fatal("Keys should not equal.")
}
}
func TestUnknownCurveErrors(t *testing.T) {
_, _, err := GenerateEKeyPair("P-256")
if err != nil {
t.Fatal(err)
}
_, _, err = GenerateEKeyPair("error-please")
if err == nil {
t.Fatal("expected invalid key type to error")
}
}