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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package openpgp
import (
"bytes"
"io"
"io/ioutil"
"testing"
"time"
"golang.org/x/crypto/openpgp/packet"
)
func TestSignDetached(t *testing.T) {
kring, _ := ReadKeyRing(readerFromHex(testKeys1And2PrivateHex))
out := bytes.NewBuffer(nil)
message := bytes.NewBufferString(signedInput)
err := DetachSign(out, kring[0], message, nil)
if err != nil {
t.Error(err)
}
testDetachedSignature(t, kring, out, signedInput, "check", testKey1KeyId)
}
func TestSignTextDetached(t *testing.T) {
kring, _ := ReadKeyRing(readerFromHex(testKeys1And2PrivateHex))
out := bytes.NewBuffer(nil)
message := bytes.NewBufferString(signedInput)
err := DetachSignText(out, kring[0], message, nil)
if err != nil {
t.Error(err)
}
testDetachedSignature(t, kring, out, signedInput, "check", testKey1KeyId)
}
func TestSignDetachedDSA(t *testing.T) {
kring, _ := ReadKeyRing(readerFromHex(dsaTestKeyPrivateHex))
out := bytes.NewBuffer(nil)
message := bytes.NewBufferString(signedInput)
err := DetachSign(out, kring[0], message, nil)
if err != nil {
t.Error(err)
}
testDetachedSignature(t, kring, out, signedInput, "check", testKey3KeyId)
}
func TestSignDetachedP256(t *testing.T) {
kring, _ := ReadKeyRing(readerFromHex(p256TestKeyPrivateHex))
kring[0].PrivateKey.Decrypt([]byte("passphrase"))
out := bytes.NewBuffer(nil)
message := bytes.NewBufferString(signedInput)
err := DetachSign(out, kring[0], message, nil)
if err != nil {
t.Error(err)
}
testDetachedSignature(t, kring, out, signedInput, "check", testKeyP256KeyId)
}
func TestNewEntity(t *testing.T) {
if testing.Short() {
return
}
// Check bit-length with no config.
e, err := NewEntity("Test User", "test", "test@example.com", nil)
if err != nil {
t.Errorf("failed to create entity: %s", err)
return
}
bl, err := e.PrimaryKey.BitLength()
if err != nil {
t.Errorf("failed to find bit length: %s", err)
}
if int(bl) != defaultRSAKeyBits {
t.Errorf("BitLength %v, expected %v", int(bl), defaultRSAKeyBits)
}
// Check bit-length with a config.
cfg := &packet.Config{RSABits: 1024}
e, err = NewEntity("Test User", "test", "test@example.com", cfg)
if err != nil {
t.Errorf("failed to create entity: %s", err)
return
}
bl, err = e.PrimaryKey.BitLength()
if err != nil {
t.Errorf("failed to find bit length: %s", err)
}
if int(bl) != cfg.RSABits {
t.Errorf("BitLength %v, expected %v", bl, cfg.RSABits)
}
w := bytes.NewBuffer(nil)
if err := e.SerializePrivate(w, nil); err != nil {
t.Errorf("failed to serialize entity: %s", err)
return
}
serialized := w.Bytes()
el, err := ReadKeyRing(w)
if err != nil {
t.Errorf("failed to reparse entity: %s", err)
return
}
if len(el) != 1 {
t.Errorf("wrong number of entities found, got %d, want 1", len(el))
}
w = bytes.NewBuffer(nil)
if err := e.SerializePrivate(w, nil); err != nil {
t.Errorf("failed to serialize entity second time: %s", err)
return
}
if !bytes.Equal(w.Bytes(), serialized) {
t.Errorf("results differed")
}
}
func TestSymmetricEncryption(t *testing.T) {
buf := new(bytes.Buffer)
plaintext, err := SymmetricallyEncrypt(buf, []byte("testing"), nil, nil)
if err != nil {
t.Errorf("error writing headers: %s", err)
return
}
message := []byte("hello world\n")
_, err = plaintext.Write(message)
if err != nil {
t.Errorf("error writing to plaintext writer: %s", err)
}
err = plaintext.Close()
if err != nil {
t.Errorf("error closing plaintext writer: %s", err)
}
md, err := ReadMessage(buf, nil, func(keys []Key, symmetric bool) ([]byte, error) {
return []byte("testing"), nil
}, nil)
if err != nil {
t.Errorf("error rereading message: %s", err)
}
messageBuf := bytes.NewBuffer(nil)
_, err = io.Copy(messageBuf, md.UnverifiedBody)
if err != nil {
t.Errorf("error rereading message: %s", err)
}
if !bytes.Equal(message, messageBuf.Bytes()) {
t.Errorf("recovered message incorrect got '%s', want '%s'", messageBuf.Bytes(), message)
}
}
var testEncryptionTests = []struct {
keyRingHex string
isSigned bool
}{
{
testKeys1And2PrivateHex,
false,
},
{
testKeys1And2PrivateHex,
true,
},
{
dsaElGamalTestKeysHex,
false,
},
{
dsaElGamalTestKeysHex,
true,
},
}
func TestEncryption(t *testing.T) {
for i, test := range testEncryptionTests {
kring, _ := ReadKeyRing(readerFromHex(test.keyRingHex))
passphrase := []byte("passphrase")
for _, entity := range kring {
if entity.PrivateKey != nil && entity.PrivateKey.Encrypted {
err := entity.PrivateKey.Decrypt(passphrase)
if err != nil {
t.Errorf("#%d: failed to decrypt key", i)
}
}
for _, subkey := range entity.Subkeys {
if subkey.PrivateKey != nil && subkey.PrivateKey.Encrypted {
err := subkey.PrivateKey.Decrypt(passphrase)
if err != nil {
t.Errorf("#%d: failed to decrypt subkey", i)
}
}
}
}
var signed *Entity
if test.isSigned {
signed = kring[0]
}
buf := new(bytes.Buffer)
w, err := Encrypt(buf, kring[:1], signed, nil /* no hints */, nil)
if err != nil {
t.Errorf("#%d: error in Encrypt: %s", i, err)
continue
}
const message = "testing"
_, err = w.Write([]byte(message))
if err != nil {
t.Errorf("#%d: error writing plaintext: %s", i, err)
continue
}
err = w.Close()
if err != nil {
t.Errorf("#%d: error closing WriteCloser: %s", i, err)
continue
}
md, err := ReadMessage(buf, kring, nil /* no prompt */, nil)
if err != nil {
t.Errorf("#%d: error reading message: %s", i, err)
continue
}
testTime, _ := time.Parse("2006-01-02", "2013-07-01")
if test.isSigned {
signKey, _ := kring[0].signingKey(testTime)
expectedKeyId := signKey.PublicKey.KeyId
if md.SignedByKeyId != expectedKeyId {
t.Errorf("#%d: message signed by wrong key id, got: %v, want: %v", i, *md.SignedBy, expectedKeyId)
}
if md.SignedBy == nil {
t.Errorf("#%d: failed to find the signing Entity", i)
}
}
plaintext, err := ioutil.ReadAll(md.UnverifiedBody)
if err != nil {
t.Errorf("#%d: error reading encrypted contents: %s", i, err)
continue
}
encryptKey, _ := kring[0].encryptionKey(testTime)
expectedKeyId := encryptKey.PublicKey.KeyId
if len(md.EncryptedToKeyIds) != 1 || md.EncryptedToKeyIds[0] != expectedKeyId {
t.Errorf("#%d: expected message to be encrypted to %v, but got %#v", i, expectedKeyId, md.EncryptedToKeyIds)
}
if string(plaintext) != message {
t.Errorf("#%d: got: %s, want: %s", i, string(plaintext), message)
}
if test.isSigned {
if md.SignatureError != nil {
t.Errorf("#%d: signature error: %s", i, md.SignatureError)
}
if md.Signature == nil {
t.Error("signature missing")
}
}
}
}
var testSigningTests = []struct {
keyRingHex string
}{
{
testKeys1And2PrivateHex,
},
{
dsaElGamalTestKeysHex,
},
}
func TestSigning(t *testing.T) {
for i, test := range testSigningTests {
kring, _ := ReadKeyRing(readerFromHex(test.keyRingHex))
passphrase := []byte("passphrase")
for _, entity := range kring {
if entity.PrivateKey != nil && entity.PrivateKey.Encrypted {
err := entity.PrivateKey.Decrypt(passphrase)
if err != nil {
t.Errorf("#%d: failed to decrypt key", i)
}
}
for _, subkey := range entity.Subkeys {
if subkey.PrivateKey != nil && subkey.PrivateKey.Encrypted {
err := subkey.PrivateKey.Decrypt(passphrase)
if err != nil {
t.Errorf("#%d: failed to decrypt subkey", i)
}
}
}
}
signed := kring[0]
buf := new(bytes.Buffer)
w, err := Sign(buf, signed, nil /* no hints */, nil)
if err != nil {
t.Errorf("#%d: error in Sign: %s", i, err)
continue
}
const message = "testing"
_, err = w.Write([]byte(message))
if err != nil {
t.Errorf("#%d: error writing plaintext: %s", i, err)
continue
}
err = w.Close()
if err != nil {
t.Errorf("#%d: error closing WriteCloser: %s", i, err)
continue
}
md, err := ReadMessage(buf, kring, nil /* no prompt */, nil)
if err != nil {
t.Errorf("#%d: error reading message: %s", i, err)
continue
}
testTime, _ := time.Parse("2006-01-02", "2013-07-01")
signKey, _ := kring[0].signingKey(testTime)
expectedKeyId := signKey.PublicKey.KeyId
if md.SignedByKeyId != expectedKeyId {
t.Errorf("#%d: message signed by wrong key id, got: %v, want: %v", i, *md.SignedBy, expectedKeyId)
}
if md.SignedBy == nil {
t.Errorf("#%d: failed to find the signing Entity", i)
}
plaintext, err := ioutil.ReadAll(md.UnverifiedBody)
if err != nil {
t.Errorf("#%d: error reading contents: %v", i, err)
continue
}
if string(plaintext) != message {
t.Errorf("#%d: got: %q, want: %q", i, plaintext, message)
}
if md.SignatureError != nil {
t.Errorf("#%d: signature error: %q", i, md.SignatureError)
}
if md.Signature == nil {
t.Error("signature missing")
}
}
}