func TestMarshalNonPointer(t *testing.T) {
type EmbedsKey struct {
Key JsonWebKey
}
keyJson := []byte(`{
"e": "AQAB",
"kty": "RSA",
"n": "vd7rZIoTLEe-z1_8G1FcXSw9CQFEJgV4g9V277sER7yx5Qjz_Pkf2YVth6wwwFJEmzc0hoKY-MMYFNwBE4hQHw"
}`)
var parsedKey JsonWebKey
err := json.Unmarshal(keyJson, &parsedKey)
if err != nil {
t.Error(fmt.Sprintf("Error unmarshalling key: %v", err))
return
}
ek := EmbedsKey{
Key: parsedKey,
}
out, err := json.Marshal(ek)
if err != nil {
t.Error(fmt.Sprintf("Error marshalling JSON: %v", err))
return
}
expected := "{\"Key\":{\"kty\":\"RSA\",\"n\":\"vd7rZIoTLEe-z1_8G1FcXSw9CQFEJgV4g9V277sER7yx5Qjz_Pkf2YVth6wwwFJEmzc0hoKY-MMYFNwBE4hQHw\",\"e\":\"AQAB\"}}"
if string(out) != expected {
t.Error("Failed to marshal embedded non-pointer JWK properly:", string(out))
}
}
// MarshalJSON serializes the given key to its JSON representation.
func (k JsonWebKey) MarshalJSON() ([]byte, error) {
var raw *rawJsonWebKey
var err error
switch key := k.Key.(type) {
case *ecdsa.PublicKey:
raw, err = fromEcPublicKey(key)
case *rsa.PublicKey:
raw = fromRsaPublicKey(key)
case *ecdsa.PrivateKey:
raw, err = fromEcPrivateKey(key)
case *rsa.PrivateKey:
raw, err = fromRsaPrivateKey(key)
case []byte:
raw, err = fromSymmetricKey(key)
default:
return nil, fmt.Errorf("square/go-jose: unknown key type '%s'", reflect.TypeOf(key))
}
if err != nil {
return nil, err
}
raw.Kid = k.KeyID
raw.Alg = k.Algorithm
raw.Use = k.Use
for _, cert := range k.Certificates {
raw.X5c = append(raw.X5c, base64.StdEncoding.EncodeToString(cert.Raw))
}
return json.Marshal(raw)
}
func TestSignerKid(t *testing.T) {
kid := "DEADBEEF"
payload := []byte("Lorem ipsum dolor sit amet")
key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
if err != nil {
t.Error("problem generating test signing key", err)
}
basejwk := JsonWebKey{Key: key}
jsonbar, err := basejwk.MarshalJSON()
if err != nil {
t.Error("problem marshalling base JWK", err)
}
var jsonmsi map[string]interface{}
err = json.Unmarshal(jsonbar, &jsonmsi)
if err != nil {
t.Error("problem unmarshalling base JWK", err)
}
jsonmsi["kid"] = kid
jsonbar2, err := json.Marshal(jsonmsi)
if err != nil {
t.Error("problem marshalling kided JWK", err)
}
var jwk JsonWebKey
err = jwk.UnmarshalJSON(jsonbar2)
if err != nil {
t.Error("problem unmarshalling kided JWK", err)
}
signer, err := NewSigner(ES256, &jwk)
if err != nil {
t.Error("problem creating signer", err)
}
signed, err := signer.Sign(payload)
serialized := signed.FullSerialize()
parsed, err := ParseSigned(serialized)
if err != nil {
t.Error("problem parsing signed object", err)
}
if parsed.Signatures[0].Header.KeyID != kid {
t.Error("KeyID did not survive trip")
}
}
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 := json.Marshal(&set)
if err != nil {
t.Error("problem marshalling set", err)
}
var set2 JsonWebKeySet
err = json.Unmarshal(jsonbar, &set2)
if err != nil {
t.Error("problem unmarshalling set", err)
}
jsonbar2, err := json.Marshal(&set2)
if err != nil {
t.Error("problem marshalling set", err)
}
if !bytes.Equal(jsonbar, jsonbar2) {
t.Error("roundtrip should not lose information")
}
}
// Helper function to serialize known-good objects.
// Precondition: value is not a nil pointer.
func mustSerializeJSON(value interface{}) []byte {
out, err := json.Marshal(value)
if err != nil {
panic(err)
}
// We never want to serialize the top-level value "null," since it's not a
// valid JOSE message. But if a caller passes in a nil pointer to this method,
// MarshalJSON will happily serialize it as the top-level value "null". If
// that value is then embedded in another operation, for instance by being
// base64-encoded and fed as input to a signing algorithm
// (https://github.com/square/go-jose/issues/22), the result will be
// incorrect. Because this method is intended for known-good objects, and a nil
// pointer is not a known-good object, we are free to panic in this case.
// Note: It's not possible to directly check whether the data pointed at by an
// interface is a nil pointer, so we do this hacky workaround.
// https://groups.google.com/forum/#!topic/golang-nuts/wnH302gBa4I
if string(out) == "null" {
panic("Tried to serialize a nil pointer.")
}
return out
}
func (b *byteBuffer) MarshalJSON() ([]byte, error) {
return json.Marshal(b.base64())
}
func MarshalJSON(v interface{}) ([]byte, error) {
return json.Marshal(v)
}
