553 lines
16 KiB
Go
553 lines
16 KiB
Go
/*-
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* Copyright 2014 Square Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package jose
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import (
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"bytes"
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"crypto"
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"crypto/ecdsa"
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"crypto/elliptic"
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"crypto/rsa"
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"encoding/hex"
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"fmt"
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"math/big"
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"reflect"
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"testing"
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)
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func TestCurveSize(t *testing.T) {
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size256 := curveSize(elliptic.P256())
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size384 := curveSize(elliptic.P384())
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size521 := curveSize(elliptic.P521())
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if size256 != 32 {
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t.Error("P-256 have 32 bytes")
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}
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if size384 != 48 {
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t.Error("P-384 have 48 bytes")
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}
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if size521 != 66 {
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t.Error("P-521 have 66 bytes")
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}
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}
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func TestRoundtripRsaPrivate(t *testing.T) {
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jwk, err := fromRsaPrivateKey(rsaTestKey)
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if err != nil {
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t.Error("problem constructing JWK from rsa key", err)
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}
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rsa2, err := jwk.rsaPrivateKey()
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if err != nil {
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t.Error("problem converting RSA private -> JWK", err)
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}
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if rsa2.N.Cmp(rsaTestKey.N) != 0 {
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t.Error("RSA private N mismatch")
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}
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if rsa2.E != rsaTestKey.E {
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t.Error("RSA private E mismatch")
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}
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if rsa2.D.Cmp(rsaTestKey.D) != 0 {
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t.Error("RSA private D mismatch")
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}
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if len(rsa2.Primes) != 2 {
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t.Error("RSA private roundtrip expected two primes")
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}
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if rsa2.Primes[0].Cmp(rsaTestKey.Primes[0]) != 0 {
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t.Error("RSA private P mismatch")
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}
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if rsa2.Primes[1].Cmp(rsaTestKey.Primes[1]) != 0 {
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t.Error("RSA private Q mismatch")
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}
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}
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func TestRsaPrivateInsufficientPrimes(t *testing.T) {
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brokenRsaPrivateKey := rsa.PrivateKey{
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PublicKey: rsa.PublicKey{
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N: rsaTestKey.N,
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E: rsaTestKey.E,
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},
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D: rsaTestKey.D,
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Primes: []*big.Int{rsaTestKey.Primes[0]},
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}
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_, err := fromRsaPrivateKey(&brokenRsaPrivateKey)
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if err != ErrUnsupportedKeyType {
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t.Error("expected unsupported key type error, got", err)
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}
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}
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func TestRsaPrivateExcessPrimes(t *testing.T) {
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brokenRsaPrivateKey := rsa.PrivateKey{
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PublicKey: rsa.PublicKey{
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N: rsaTestKey.N,
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E: rsaTestKey.E,
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},
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D: rsaTestKey.D,
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Primes: []*big.Int{
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rsaTestKey.Primes[0],
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rsaTestKey.Primes[1],
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big.NewInt(3),
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},
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}
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_, err := fromRsaPrivateKey(&brokenRsaPrivateKey)
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if err != ErrUnsupportedKeyType {
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t.Error("expected unsupported key type error, got", err)
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}
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}
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func TestRoundtripEcPublic(t *testing.T) {
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for i, ecTestKey := range []*ecdsa.PrivateKey{ecTestKey256, ecTestKey384, ecTestKey521} {
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jwk, err := fromEcPublicKey(&ecTestKey.PublicKey)
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ec2, err := jwk.ecPublicKey()
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if err != nil {
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t.Error("problem converting ECDSA private -> JWK", i, err)
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}
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if !reflect.DeepEqual(ec2.Curve, ecTestKey.Curve) {
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t.Error("ECDSA private curve mismatch", i)
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}
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if ec2.X.Cmp(ecTestKey.X) != 0 {
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t.Error("ECDSA X mismatch", i)
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}
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if ec2.Y.Cmp(ecTestKey.Y) != 0 {
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t.Error("ECDSA Y mismatch", i)
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}
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}
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}
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func TestRoundtripEcPrivate(t *testing.T) {
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for i, ecTestKey := range []*ecdsa.PrivateKey{ecTestKey256, ecTestKey384, ecTestKey521} {
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jwk, err := fromEcPrivateKey(ecTestKey)
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ec2, err := jwk.ecPrivateKey()
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if err != nil {
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t.Error("problem converting ECDSA private -> JWK", i, err)
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}
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if !reflect.DeepEqual(ec2.Curve, ecTestKey.Curve) {
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t.Error("ECDSA private curve mismatch", i)
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}
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if ec2.X.Cmp(ecTestKey.X) != 0 {
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t.Error("ECDSA X mismatch", i)
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}
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if ec2.Y.Cmp(ecTestKey.Y) != 0 {
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t.Error("ECDSA Y mismatch", i)
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}
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if ec2.D.Cmp(ecTestKey.D) != 0 {
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t.Error("ECDSA D mismatch", i)
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}
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}
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}
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func TestMarshalUnmarshal(t *testing.T) {
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kid := "DEADBEEF"
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for i, key := range []interface{}{ecTestKey256, ecTestKey384, ecTestKey521, rsaTestKey} {
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for _, use := range []string{"", "sig", "enc"} {
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jwk := JsonWebKey{Key: key, KeyID: kid, Algorithm: "foo"}
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if use != "" {
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jwk.Use = use
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}
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jsonbar, err := jwk.MarshalJSON()
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if err != nil {
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t.Error("problem marshaling", i, err)
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}
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var jwk2 JsonWebKey
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err = jwk2.UnmarshalJSON(jsonbar)
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if err != nil {
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t.Error("problem unmarshalling", i, err)
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}
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jsonbar2, err := jwk2.MarshalJSON()
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if err != nil {
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t.Error("problem marshaling", i, err)
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}
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if !bytes.Equal(jsonbar, jsonbar2) {
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t.Error("roundtrip should not lose information", i)
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}
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if jwk2.KeyID != kid {
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t.Error("kid did not roundtrip JSON marshalling", i)
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}
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if jwk2.Algorithm != "foo" {
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t.Error("alg did not roundtrip JSON marshalling", i)
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}
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if jwk2.Use != use {
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t.Error("use did not roundtrip JSON marshalling", i)
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}
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}
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}
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}
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func TestMarshalNonPointer(t *testing.T) {
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type EmbedsKey struct {
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Key JsonWebKey
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}
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keyJson := []byte(`{
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"e": "AQAB",
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"kty": "RSA",
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"n": "vd7rZIoTLEe-z1_8G1FcXSw9CQFEJgV4g9V277sER7yx5Qjz_Pkf2YVth6wwwFJEmzc0hoKY-MMYFNwBE4hQHw"
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}`)
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var parsedKey JsonWebKey
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err := UnmarshalJSON(keyJson, &parsedKey)
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if err != nil {
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t.Error(fmt.Sprintf("Error unmarshalling key: %v", err))
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return
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}
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ek := EmbedsKey{
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Key: parsedKey,
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}
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out, err := MarshalJSON(ek)
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if err != nil {
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t.Error(fmt.Sprintf("Error marshalling JSON: %v", err))
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return
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}
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expected := "{\"Key\":{\"kty\":\"RSA\",\"n\":\"vd7rZIoTLEe-z1_8G1FcXSw9CQFEJgV4g9V277sER7yx5Qjz_Pkf2YVth6wwwFJEmzc0hoKY-MMYFNwBE4hQHw\",\"e\":\"AQAB\"}}"
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if string(out) != expected {
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t.Error("Failed to marshal embedded non-pointer JWK properly:", string(out))
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}
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}
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func TestMarshalUnmarshalInvalid(t *testing.T) {
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// Make an invalid curve coordinate by creating a byte array that is one
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// byte too large, and setting the first byte to 1 (otherwise it's just zero).
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invalidCoord := make([]byte, curveSize(ecTestKey256.Curve)+1)
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invalidCoord[0] = 1
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keys := []interface{}{
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// Empty keys
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&rsa.PrivateKey{},
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&ecdsa.PrivateKey{},
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// Invalid keys
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&ecdsa.PrivateKey{
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PublicKey: ecdsa.PublicKey{
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// Missing values in pub key
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Curve: elliptic.P256(),
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},
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},
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&ecdsa.PrivateKey{
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PublicKey: ecdsa.PublicKey{
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// Invalid curve
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Curve: nil,
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X: ecTestKey256.X,
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Y: ecTestKey256.Y,
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},
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},
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&ecdsa.PrivateKey{
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// Valid pub key, but missing priv key values
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PublicKey: ecTestKey256.PublicKey,
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},
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&ecdsa.PrivateKey{
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// Invalid pub key, values too large
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PublicKey: ecdsa.PublicKey{
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Curve: ecTestKey256.Curve,
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X: big.NewInt(0).SetBytes(invalidCoord),
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Y: big.NewInt(0).SetBytes(invalidCoord),
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},
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D: ecTestKey256.D,
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},
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nil,
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}
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for i, key := range keys {
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jwk := JsonWebKey{Key: key}
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_, err := jwk.MarshalJSON()
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if err == nil {
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t.Error("managed to serialize invalid key", i)
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}
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}
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}
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func TestWebKeyVectorsInvalid(t *testing.T) {
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keys := []string{
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// Invalid JSON
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"{X",
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// Empty key
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"{}",
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// Invalid RSA keys
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`{"kty":"RSA"}`,
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`{"kty":"RSA","e":""}`,
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`{"kty":"RSA","e":"XXXX"}`,
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`{"kty":"RSA","d":"XXXX"}`,
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// Invalid EC keys
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`{"kty":"EC","crv":"ABC"}`,
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`{"kty":"EC","crv":"P-256"}`,
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`{"kty":"EC","crv":"P-256","d":"XXX"}`,
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`{"kty":"EC","crv":"ABC","d":"dGVzdA","x":"dGVzdA"}`,
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`{"kty":"EC","crv":"P-256","d":"dGVzdA","x":"dGVzdA"}`,
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}
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for _, key := range keys {
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var jwk2 JsonWebKey
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err := jwk2.UnmarshalJSON([]byte(key))
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if err == nil {
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t.Error("managed to parse invalid key:", key)
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}
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}
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}
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// Test vectors from RFC 7520
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var cookbookJWKs = []string{
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// EC Public
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stripWhitespace(`{
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"kty": "EC",
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"kid": "bilbo.baggins@hobbiton.example",
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"use": "sig",
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"crv": "P-521",
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"x": "AHKZLLOsCOzz5cY97ewNUajB957y-C-U88c3v13nmGZx6sYl_oJXu9
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A5RkTKqjqvjyekWF-7ytDyRXYgCF5cj0Kt",
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"y": "AdymlHvOiLxXkEhayXQnNCvDX4h9htZaCJN34kfmC6pV5OhQHiraVy
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SsUdaQkAgDPrwQrJmbnX9cwlGfP-HqHZR1"
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}`),
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// EC Private
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stripWhitespace(`{
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"kty": "EC",
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"kid": "bilbo.baggins@hobbiton.example",
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"use": "sig",
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"crv": "P-521",
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"x": "AHKZLLOsCOzz5cY97ewNUajB957y-C-U88c3v13nmGZx6sYl_oJXu9
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A5RkTKqjqvjyekWF-7ytDyRXYgCF5cj0Kt",
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"y": "AdymlHvOiLxXkEhayXQnNCvDX4h9htZaCJN34kfmC6pV5OhQHiraVy
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SsUdaQkAgDPrwQrJmbnX9cwlGfP-HqHZR1",
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"d": "AAhRON2r9cqXX1hg-RoI6R1tX5p2rUAYdmpHZoC1XNM56KtscrX6zb
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KipQrCW9CGZH3T4ubpnoTKLDYJ_fF3_rJt"
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}`),
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// RSA Public
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stripWhitespace(`{
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"kty": "RSA",
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"kid": "bilbo.baggins@hobbiton.example",
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"use": "sig",
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"n": "n4EPtAOCc9AlkeQHPzHStgAbgs7bTZLwUBZdR8_KuKPEHLd4rHVTeT
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-O-XV2jRojdNhxJWTDvNd7nqQ0VEiZQHz_AJmSCpMaJMRBSFKrKb2wqV
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wGU_NsYOYL-QtiWN2lbzcEe6XC0dApr5ydQLrHqkHHig3RBordaZ6Aj-
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oBHqFEHYpPe7Tpe-OfVfHd1E6cS6M1FZcD1NNLYD5lFHpPI9bTwJlsde
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3uhGqC0ZCuEHg8lhzwOHrtIQbS0FVbb9k3-tVTU4fg_3L_vniUFAKwuC
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LqKnS2BYwdq_mzSnbLY7h_qixoR7jig3__kRhuaxwUkRz5iaiQkqgc5g
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HdrNP5zw",
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"e": "AQAB"
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}`),
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// RSA Private
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stripWhitespace(`{"kty":"RSA",
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"kid":"juliet@capulet.lit",
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"use":"enc",
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"n":"t6Q8PWSi1dkJj9hTP8hNYFlvadM7DflW9mWepOJhJ66w7nyoK1gPNqFMSQRy
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O125Gp-TEkodhWr0iujjHVx7BcV0llS4w5ACGgPrcAd6ZcSR0-Iqom-QFcNP
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8Sjg086MwoqQU_LYywlAGZ21WSdS_PERyGFiNnj3QQlO8Yns5jCtLCRwLHL0
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Pb1fEv45AuRIuUfVcPySBWYnDyGxvjYGDSM-AqWS9zIQ2ZilgT-GqUmipg0X
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OC0Cc20rgLe2ymLHjpHciCKVAbY5-L32-lSeZO-Os6U15_aXrk9Gw8cPUaX1
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_I8sLGuSiVdt3C_Fn2PZ3Z8i744FPFGGcG1qs2Wz-Q",
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"e":"AQAB",
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"d":"GRtbIQmhOZtyszfgKdg4u_N-R_mZGU_9k7JQ_jn1DnfTuMdSNprTeaSTyWfS
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NkuaAwnOEbIQVy1IQbWVV25NY3ybc_IhUJtfri7bAXYEReWaCl3hdlPKXy9U
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vqPYGR0kIXTQRqns-dVJ7jahlI7LyckrpTmrM8dWBo4_PMaenNnPiQgO0xnu
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ToxutRZJfJvG4Ox4ka3GORQd9CsCZ2vsUDmsXOfUENOyMqADC6p1M3h33tsu
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rY15k9qMSpG9OX_IJAXmxzAh_tWiZOwk2K4yxH9tS3Lq1yX8C1EWmeRDkK2a
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hecG85-oLKQt5VEpWHKmjOi_gJSdSgqcN96X52esAQ",
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"p":"2rnSOV4hKSN8sS4CgcQHFbs08XboFDqKum3sc4h3GRxrTmQdl1ZK9uw-PIHf
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QP0FkxXVrx-WE-ZEbrqivH_2iCLUS7wAl6XvARt1KkIaUxPPSYB9yk31s0Q8
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UK96E3_OrADAYtAJs-M3JxCLfNgqh56HDnETTQhH3rCT5T3yJws",
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"q":"1u_RiFDP7LBYh3N4GXLT9OpSKYP0uQZyiaZwBtOCBNJgQxaj10RWjsZu0c6I
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edis4S7B_coSKB0Kj9PaPaBzg-IySRvvcQuPamQu66riMhjVtG6TlV8CLCYK
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rYl52ziqK0E_ym2QnkwsUX7eYTB7LbAHRK9GqocDE5B0f808I4s",
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"dp":"KkMTWqBUefVwZ2_Dbj1pPQqyHSHjj90L5x_MOzqYAJMcLMZtbUtwKqvVDq3
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tbEo3ZIcohbDtt6SbfmWzggabpQxNxuBpoOOf_a_HgMXK_lhqigI4y_kqS1w
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Y52IwjUn5rgRrJ-yYo1h41KR-vz2pYhEAeYrhttWtxVqLCRViD6c",
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"dq":"AvfS0-gRxvn0bwJoMSnFxYcK1WnuEjQFluMGfwGitQBWtfZ1Er7t1xDkbN9
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GQTB9yqpDoYaN06H7CFtrkxhJIBQaj6nkF5KKS3TQtQ5qCzkOkmxIe3KRbBy
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mXxkb5qwUpX5ELD5xFc6FeiafWYY63TmmEAu_lRFCOJ3xDea-ots",
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"qi":"lSQi-w9CpyUReMErP1RsBLk7wNtOvs5EQpPqmuMvqW57NBUczScEoPwmUqq
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abu9V0-Py4dQ57_bapoKRu1R90bvuFnU63SHWEFglZQvJDMeAvmj4sm-Fp0o
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Yu_neotgQ0hzbI5gry7ajdYy9-2lNx_76aBZoOUu9HCJ-UsfSOI8"}`),
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}
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// SHA-256 thumbprints of the above keys, hex-encoded
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var cookbookJWKThumbprints = []string{
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"747ae2dd2003664aeeb21e4753fe7402846170a16bc8df8f23a8cf06d3cbe793",
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"747ae2dd2003664aeeb21e4753fe7402846170a16bc8df8f23a8cf06d3cbe793",
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"f63838e96077ad1fc01c3f8405774dedc0641f558ebb4b40dccf5f9b6d66a932",
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"0fc478f8579325fcee0d4cbc6d9d1ce21730a6e97e435d6008fb379b0ebe47d4",
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}
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func TestWebKeyVectorsValid(t *testing.T) {
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for _, key := range cookbookJWKs {
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var jwk2 JsonWebKey
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err := jwk2.UnmarshalJSON([]byte(key))
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if err != nil {
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t.Error("unable to parse valid key:", key, err)
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}
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}
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}
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func TestThumbprint(t *testing.T) {
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for i, key := range cookbookJWKs {
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var jwk2 JsonWebKey
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err := jwk2.UnmarshalJSON([]byte(key))
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if err != nil {
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t.Error("unable to parse valid key:", key, err)
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}
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tp, err := jwk2.Thumbprint(crypto.SHA256)
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if err != nil {
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t.Error("unable to compute thumbprint:", key, err)
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}
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tpHex := hex.EncodeToString(tp)
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if cookbookJWKThumbprints[i] != tpHex {
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t.Error("incorrect thumbprint:", i, cookbookJWKThumbprints[i], tpHex)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestMarshalUnmarshalJWKSet(t *testing.T) {
|
|
jwk1 := JsonWebKey{Key: rsaTestKey, KeyID: "ABCDEFG", Algorithm: "foo"}
|
|
jwk2 := JsonWebKey{Key: rsaTestKey, KeyID: "GFEDCBA", Algorithm: "foo"}
|
|
var set JsonWebKeySet
|
|
set.Keys = append(set.Keys, jwk1)
|
|
set.Keys = append(set.Keys, jwk2)
|
|
|
|
jsonbar, err := MarshalJSON(&set)
|
|
if err != nil {
|
|
t.Error("problem marshalling set", err)
|
|
}
|
|
var set2 JsonWebKeySet
|
|
err = UnmarshalJSON(jsonbar, &set2)
|
|
if err != nil {
|
|
t.Error("problem unmarshalling set", err)
|
|
}
|
|
jsonbar2, err := MarshalJSON(&set2)
|
|
if err != nil {
|
|
t.Error("problem marshalling set", err)
|
|
}
|
|
if !bytes.Equal(jsonbar, jsonbar2) {
|
|
t.Error("roundtrip should not lose information")
|
|
}
|
|
}
|
|
|
|
func TestJWKSetKey(t *testing.T) {
|
|
jwk1 := JsonWebKey{Key: rsaTestKey, KeyID: "ABCDEFG", Algorithm: "foo"}
|
|
jwk2 := JsonWebKey{Key: rsaTestKey, KeyID: "GFEDCBA", Algorithm: "foo"}
|
|
var set JsonWebKeySet
|
|
set.Keys = append(set.Keys, jwk1)
|
|
set.Keys = append(set.Keys, jwk2)
|
|
k := set.Key("ABCDEFG")
|
|
if len(k) != 1 {
|
|
t.Errorf("method should return slice with one key not %d", len(k))
|
|
}
|
|
if k[0].KeyID != "ABCDEFG" {
|
|
t.Error("method should return key with ID ABCDEFG")
|
|
}
|
|
}
|
|
|
|
func TestJWKSymmetricKey(t *testing.T) {
|
|
sample1 := `{"kty":"oct","alg":"A128KW","k":"GawgguFyGrWKav7AX4VKUg"}`
|
|
sample2 := `{"kty":"oct","k":"AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow","kid":"HMAC key used in JWS spec Appendix A.1 example"}`
|
|
|
|
var jwk1 JsonWebKey
|
|
UnmarshalJSON([]byte(sample1), &jwk1)
|
|
|
|
if jwk1.Algorithm != "A128KW" {
|
|
t.Errorf("expected Algorithm to be A128KW, but was '%s'", jwk1.Algorithm)
|
|
}
|
|
expected1 := fromHexBytes("19ac2082e1721ab58a6afec05f854a52")
|
|
if !bytes.Equal(jwk1.Key.([]byte), expected1) {
|
|
t.Errorf("expected Key to be '%s', but was '%s'", hex.EncodeToString(expected1), hex.EncodeToString(jwk1.Key.([]byte)))
|
|
}
|
|
|
|
var jwk2 JsonWebKey
|
|
UnmarshalJSON([]byte(sample2), &jwk2)
|
|
|
|
if jwk2.KeyID != "HMAC key used in JWS spec Appendix A.1 example" {
|
|
t.Errorf("expected KeyID to be 'HMAC key used in JWS spec Appendix A.1 example', but was '%s'", jwk2.KeyID)
|
|
}
|
|
expected2 := fromHexBytes(`
|
|
0323354b2b0fa5bc837e0665777ba68f5ab328e6f054c928a90f84b2d2502ebf
|
|
d3fb5a92d20647ef968ab4c377623d223d2e2172052e4f08c0cd9af567d080a3`)
|
|
if !bytes.Equal(jwk2.Key.([]byte), expected2) {
|
|
t.Errorf("expected Key to be '%s', but was '%s'", hex.EncodeToString(expected2), hex.EncodeToString(jwk2.Key.([]byte)))
|
|
}
|
|
}
|
|
|
|
func TestJWKSymmetricRoundtrip(t *testing.T) {
|
|
jwk1 := JsonWebKey{Key: []byte{1, 2, 3, 4}}
|
|
marshaled, err := jwk1.MarshalJSON()
|
|
if err != nil {
|
|
t.Errorf("failed to marshal valid JWK object", err)
|
|
}
|
|
|
|
var jwk2 JsonWebKey
|
|
err = jwk2.UnmarshalJSON(marshaled)
|
|
if err != nil {
|
|
t.Errorf("failed to unmarshal valid JWK object", err)
|
|
}
|
|
|
|
if !bytes.Equal(jwk1.Key.([]byte), jwk2.Key.([]byte)) {
|
|
t.Error("round-trip of symmetric JWK gave different raw keys")
|
|
}
|
|
}
|
|
|
|
func TestJWKSymmetricInvalid(t *testing.T) {
|
|
invalid := JsonWebKey{}
|
|
_, err := invalid.MarshalJSON()
|
|
if err == nil {
|
|
t.Error("excepted error on marshaling invalid symmetric JWK object")
|
|
}
|
|
|
|
var jwk JsonWebKey
|
|
err = jwk.UnmarshalJSON([]byte(`{"kty":"oct"}`))
|
|
if err == nil {
|
|
t.Error("excepted error on unmarshaling invalid symmetric JWK object")
|
|
}
|
|
}
|
|
|
|
func TestJWKValid(t *testing.T) {
|
|
bigInt := big.NewInt(0)
|
|
eccPub := ecdsa.PublicKey{elliptic.P256(), bigInt, bigInt}
|
|
rsaPub := rsa.PublicKey{bigInt, 1}
|
|
cases := []struct {
|
|
key interface{}
|
|
expectedValidity bool
|
|
}{
|
|
{nil, false},
|
|
{&ecdsa.PublicKey{}, false},
|
|
{&eccPub, true},
|
|
{&ecdsa.PrivateKey{}, false},
|
|
{&ecdsa.PrivateKey{eccPub, bigInt}, true},
|
|
{&rsa.PublicKey{}, false},
|
|
{&rsaPub, true},
|
|
{&rsa.PrivateKey{}, false},
|
|
{&rsa.PrivateKey{rsaPub, bigInt, []*big.Int{bigInt, bigInt}, rsa.PrecomputedValues{}}, true},
|
|
}
|
|
|
|
for _, tc := range cases {
|
|
k := &JsonWebKey{Key: tc.key}
|
|
if valid := k.Valid(); valid != tc.expectedValidity {
|
|
t.Errorf("expected Valid to return %t, got %t", tc.expectedValidity, valid)
|
|
}
|
|
}
|
|
}
|