woodpecker/vendor/code.google.com/p/go.crypto/ssh/keys_test.go
2015-09-29 18:21:17 -07:00

214 lines
5.6 KiB
Go

package ssh
import (
"crypto/dsa"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/rsa"
"reflect"
"strings"
"testing"
)
var (
ecdsaKey Signer
ecdsa384Key Signer
ecdsa521Key Signer
testCertKey Signer
)
type testSigner struct {
Signer
pub PublicKey
}
func (ts *testSigner) PublicKey() PublicKey {
if ts.pub != nil {
return ts.pub
}
return ts.Signer.PublicKey()
}
func init() {
raw256, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
ecdsaKey, _ = NewSignerFromKey(raw256)
raw384, _ := ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
ecdsa384Key, _ = NewSignerFromKey(raw384)
raw521, _ := ecdsa.GenerateKey(elliptic.P521(), rand.Reader)
ecdsa521Key, _ = NewSignerFromKey(raw521)
// Create a cert and sign it for use in tests.
testCert := &OpenSSHCertV01{
Nonce: []byte{}, // To pass reflect.DeepEqual after marshal & parse, this must be non-nil
Key: ecdsaKey.PublicKey(),
ValidPrincipals: []string{"gopher1", "gopher2"}, // increases test coverage
ValidAfter: 0, // unix epoch
ValidBefore: maxUint64, // The end of currently representable time.
Reserved: []byte{}, // To pass reflect.DeepEqual after marshal & parse, this must be non-nil
SignatureKey: rsaKey.PublicKey(),
}
sigBytes, _ := rsaKey.Sign(rand.Reader, testCert.BytesForSigning())
testCert.Signature = &signature{
Format: testCert.SignatureKey.PublicKeyAlgo(),
Blob: sigBytes,
}
testCertKey = &testSigner{
Signer: ecdsaKey,
pub: testCert,
}
}
func rawKey(pub PublicKey) interface{} {
switch k := pub.(type) {
case *rsaPublicKey:
return (*rsa.PublicKey)(k)
case *dsaPublicKey:
return (*dsa.PublicKey)(k)
case *ecdsaPublicKey:
return (*ecdsa.PublicKey)(k)
case *OpenSSHCertV01:
return k
}
panic("unknown key type")
}
func TestKeyMarshalParse(t *testing.T) {
keys := []Signer{rsaKey, dsaKey, ecdsaKey, ecdsa384Key, ecdsa521Key, testCertKey}
for _, priv := range keys {
pub := priv.PublicKey()
roundtrip, rest, ok := ParsePublicKey(MarshalPublicKey(pub))
if !ok {
t.Errorf("ParsePublicKey(%T) failed", pub)
}
if len(rest) > 0 {
t.Errorf("ParsePublicKey(%T): trailing junk", pub)
}
k1 := rawKey(pub)
k2 := rawKey(roundtrip)
if !reflect.DeepEqual(k1, k2) {
t.Errorf("got %#v in roundtrip, want %#v", k2, k1)
}
}
}
func TestUnsupportedCurves(t *testing.T) {
raw, err := ecdsa.GenerateKey(elliptic.P224(), rand.Reader)
if err != nil {
t.Fatalf("GenerateKey: %v", err)
}
if _, err = NewSignerFromKey(raw); err == nil || !strings.Contains(err.Error(), "only P256") {
t.Fatalf("NewPrivateKey should not succeed with P224, got: %v", err)
}
if _, err = NewPublicKey(&raw.PublicKey); err == nil || !strings.Contains(err.Error(), "only P256") {
t.Fatalf("NewPublicKey should not succeed with P224, got: %v", err)
}
}
func TestNewPublicKey(t *testing.T) {
keys := []Signer{rsaKey, dsaKey, ecdsaKey}
for _, k := range keys {
raw := rawKey(k.PublicKey())
pub, err := NewPublicKey(raw)
if err != nil {
t.Errorf("NewPublicKey(%#v): %v", raw, err)
}
if !reflect.DeepEqual(k.PublicKey(), pub) {
t.Errorf("NewPublicKey(%#v) = %#v, want %#v", raw, pub, k.PublicKey())
}
}
}
func TestKeySignVerify(t *testing.T) {
keys := []Signer{rsaKey, dsaKey, ecdsaKey, testCertKey}
for _, priv := range keys {
pub := priv.PublicKey()
data := []byte("sign me")
sig, err := priv.Sign(rand.Reader, data)
if err != nil {
t.Fatalf("Sign(%T): %v", priv, err)
}
if !pub.Verify(data, sig) {
t.Errorf("publicKey.Verify(%T) failed", priv)
}
}
}
func TestParseRSAPrivateKey(t *testing.T) {
key, err := ParsePrivateKey([]byte(testServerPrivateKey))
if err != nil {
t.Fatalf("ParsePrivateKey: %v", err)
}
rsa, ok := key.(*rsaPrivateKey)
if !ok {
t.Fatalf("got %T, want *rsa.PrivateKey", rsa)
}
if err := rsa.Validate(); err != nil {
t.Errorf("Validate: %v", err)
}
}
func TestParseECPrivateKey(t *testing.T) {
// Taken from the data in test/ .
pem := []byte(`-----BEGIN EC PRIVATE KEY-----
MHcCAQEEINGWx0zo6fhJ/0EAfrPzVFyFC9s18lBt3cRoEDhS3ARooAoGCCqGSM49
AwEHoUQDQgAEi9Hdw6KvZcWxfg2IDhA7UkpDtzzt6ZqJXSsFdLd+Kx4S3Sx4cVO+
6/ZOXRnPmNAlLUqjShUsUBBngG0u2fqEqA==
-----END EC PRIVATE KEY-----`)
key, err := ParsePrivateKey(pem)
if err != nil {
t.Fatalf("ParsePrivateKey: %v", err)
}
ecKey, ok := key.(*ecdsaPrivateKey)
if !ok {
t.Fatalf("got %T, want *ecdsaPrivateKey", ecKey)
}
if !validateECPublicKey(ecKey.Curve, ecKey.X, ecKey.Y) {
t.Fatalf("public key does not validate.")
}
}
// ssh-keygen -t dsa -f /tmp/idsa.pem
var dsaPEM = `-----BEGIN DSA PRIVATE KEY-----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-----END DSA PRIVATE KEY-----`
func TestParseDSA(t *testing.T) {
s, err := ParsePrivateKey([]byte(dsaPEM))
if err != nil {
t.Fatalf("ParsePrivateKey returned error: %s", err)
}
data := []byte("sign me")
sig, err := s.Sign(rand.Reader, data)
if err != nil {
t.Fatalf("dsa.Sign: %v", err)
}
if !s.PublicKey().Verify(data, sig) {
t.Error("Verify failed.")
}
}