docs/cryptoservice/crypto_service_test.go

403 lines
15 KiB
Go

package cryptoservice
import (
"crypto/rand"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"runtime"
"testing"
"github.com/stretchr/testify/require"
"github.com/docker/notary/passphrase"
"github.com/docker/notary/trustmanager"
"github.com/docker/notary/tuf/data"
"github.com/docker/notary/tuf/signed"
)
var algoToSigType = map[string]data.SigAlgorithm{
data.ECDSAKey: data.ECDSASignature,
data.ED25519Key: data.EDDSASignature,
data.RSAKey: data.RSAPSSSignature,
}
var passphraseRetriever = func(string, string, bool, int) (string, bool, error) { return "", false, nil }
type CryptoServiceTester struct {
role string
keyAlgo string
gun string
}
func (c CryptoServiceTester) cryptoServiceFactory() *CryptoService {
return NewCryptoService(trustmanager.NewKeyMemoryStore(passphraseRetriever))
}
// asserts that created key exists
func (c CryptoServiceTester) TestCreateAndGetKey(t *testing.T) {
cryptoService := c.cryptoServiceFactory()
// Test Create
tufKey, err := cryptoService.Create(c.role, c.gun, c.keyAlgo)
require.NoError(t, err, c.errorMsg("error creating key"))
// Test GetKey
retrievedKey := cryptoService.GetKey(tufKey.ID())
require.NotNil(t, retrievedKey,
c.errorMsg("Could not find key ID %s", tufKey.ID()))
require.Equal(t, tufKey.Public(), retrievedKey.Public(),
c.errorMsg("retrieved public key didn't match"))
// Test GetPrivateKey
retrievedKey, alias, err := cryptoService.GetPrivateKey(tufKey.ID())
require.NoError(t, err)
require.Equal(t, tufKey.ID(), retrievedKey.ID(),
c.errorMsg("retrieved private key didn't have the right ID"))
require.Equal(t, c.role, alias)
}
// If there are multiple keystores, ensure that a key is only added to one -
// the first in the list of keyStores (which is in order of preference)
func (c CryptoServiceTester) TestCreateAndGetWhenMultipleKeystores(t *testing.T) {
cryptoService := c.cryptoServiceFactory()
cryptoService.keyStores = append(cryptoService.keyStores,
trustmanager.NewKeyMemoryStore(passphraseRetriever))
// Test Create
tufKey, err := cryptoService.Create(c.role, c.gun, c.keyAlgo)
require.NoError(t, err, c.errorMsg("error creating key"))
// Only the first keystore should have the key
keyPath := tufKey.ID()
if c.role != data.CanonicalRootRole && c.gun != "" {
keyPath = filepath.Join(c.gun, keyPath)
}
_, _, err = cryptoService.keyStores[0].GetKey(keyPath)
require.NoError(t, err, c.errorMsg(
"First keystore does not have the key %s", keyPath))
_, _, err = cryptoService.keyStores[1].GetKey(keyPath)
require.Error(t, err, c.errorMsg(
"Second keystore has the key %s", keyPath))
// GetKey works across multiple keystores
retrievedKey := cryptoService.GetKey(tufKey.ID())
require.NotNil(t, retrievedKey,
c.errorMsg("Could not find key ID %s", tufKey.ID()))
}
// asserts that getting key fails for a non-existent key
func (c CryptoServiceTester) TestGetNonexistentKey(t *testing.T) {
cryptoService := c.cryptoServiceFactory()
require.Nil(t, cryptoService.GetKey("boguskeyid"),
c.errorMsg("non-nil result for bogus keyid"))
_, _, err := cryptoService.GetPrivateKey("boguskeyid")
require.Error(t, err)
// The underlying error has been correctly propagated.
_, ok := err.(*trustmanager.ErrKeyNotFound)
require.True(t, ok)
}
// asserts that signing with a created key creates a valid signature
func (c CryptoServiceTester) TestSignWithKey(t *testing.T) {
cryptoService := c.cryptoServiceFactory()
content := []byte("this is a secret")
tufKey, err := cryptoService.Create(c.role, c.gun, c.keyAlgo)
require.NoError(t, err, c.errorMsg("error creating key"))
// Test Sign
privKey, role, err := cryptoService.GetPrivateKey(tufKey.ID())
require.NoError(t, err, c.errorMsg("failed to get private key"))
require.Equal(t, c.role, role)
signature, err := privKey.Sign(rand.Reader, content, nil)
require.NoError(t, err, c.errorMsg("signing failed"))
verifier, ok := signed.Verifiers[algoToSigType[c.keyAlgo]]
require.True(t, ok, c.errorMsg("Unknown verifier for algorithm"))
err = verifier.Verify(tufKey, signature, content)
require.NoError(t, err,
c.errorMsg("verification failed for %s key type", c.keyAlgo))
}
// asserts that signing, if there are no matching keys, produces no signatures
func (c CryptoServiceTester) TestSignNoMatchingKeys(t *testing.T) {
cryptoService := c.cryptoServiceFactory()
privKey, err := trustmanager.GenerateECDSAKey(rand.Reader)
require.NoError(t, err, c.errorMsg("error creating key"))
// Test Sign
_, _, err = cryptoService.GetPrivateKey(privKey.ID())
require.Error(t, err, c.errorMsg("Should not have found private key"))
}
// Test GetPrivateKey succeeds when multiple keystores have the same key
func (c CryptoServiceTester) TestGetPrivateKeyMultipleKeystores(t *testing.T) {
cryptoService := c.cryptoServiceFactory()
cryptoService.keyStores = append(cryptoService.keyStores,
trustmanager.NewKeyMemoryStore(passphraseRetriever))
privKey, err := trustmanager.GenerateECDSAKey(rand.Reader)
require.NoError(t, err, c.errorMsg("error creating key"))
for _, store := range cryptoService.keyStores {
err := store.AddKey(trustmanager.KeyInfo{Role: c.role, Gun: c.gun}, privKey)
require.NoError(t, err)
}
foundKey, role, err := cryptoService.GetPrivateKey(privKey.ID())
require.NoError(t, err, c.errorMsg("failed to get private key"))
require.Equal(t, c.role, role)
require.Equal(t, privKey.ID(), foundKey.ID())
}
func giveUpPassphraseRetriever(_, _ string, _ bool, _ int) (string, bool, error) {
return "", true, nil
}
// Test that ErrPasswordInvalid is correctly propagated
func (c CryptoServiceTester) TestGetPrivateKeyPasswordInvalid(t *testing.T) {
tempBaseDir, err := ioutil.TempDir("", "cs-test-")
require.NoError(t, err, "failed to create a temporary directory: %s", err)
defer os.RemoveAll(tempBaseDir)
// Do not use c.cryptoServiceFactory(), we need a KeyFileStore.
retriever := passphrase.ConstantRetriever("password")
store, err := trustmanager.NewKeyFileStore(tempBaseDir, retriever)
require.NoError(t, err)
cryptoService := NewCryptoService(store)
pubKey, err := cryptoService.Create(c.role, c.gun, c.keyAlgo)
require.NoError(t, err, "error generating key: %s", err)
// cryptoService's FileKeyStore caches the unlocked private key, so to test
// private key unlocking we need a new instance.
store, err = trustmanager.NewKeyFileStore(tempBaseDir, giveUpPassphraseRetriever)
require.NoError(t, err)
cryptoService = NewCryptoService(store)
_, _, err = cryptoService.GetPrivateKey(pubKey.ID())
require.EqualError(t, err, trustmanager.ErrPasswordInvalid{}.Error())
}
// Test that ErrAtttemptsExceeded is correctly propagated
func (c CryptoServiceTester) TestGetPrivateKeyAttemptsExceeded(t *testing.T) {
tempBaseDir, err := ioutil.TempDir("", "cs-test-")
require.NoError(t, err, "failed to create a temporary directory: %s", err)
defer os.RemoveAll(tempBaseDir)
// Do not use c.cryptoServiceFactory(), we need a KeyFileStore.
retriever := passphrase.ConstantRetriever("password")
store, err := trustmanager.NewKeyFileStore(tempBaseDir, retriever)
require.NoError(t, err)
cryptoService := NewCryptoService(store)
pubKey, err := cryptoService.Create(c.role, c.gun, c.keyAlgo)
require.NoError(t, err, "error generating key: %s", err)
// trustmanager.KeyFileStore and trustmanager.KeyMemoryStore both cache the unlocked
// private key, so to test private key unlocking we need a new instance using the
// same underlying storage; this also makes trustmanager.KeyMemoryStore (and
// c.cryptoServiceFactory()) unsuitable.
retriever = passphrase.ConstantRetriever("incorrect password")
store, err = trustmanager.NewKeyFileStore(tempBaseDir, retriever)
require.NoError(t, err)
cryptoService = NewCryptoService(store)
_, _, err = cryptoService.GetPrivateKey(pubKey.ID())
require.EqualError(t, err, trustmanager.ErrAttemptsExceeded{}.Error())
}
// asserts that removing key that exists succeeds
func (c CryptoServiceTester) TestRemoveCreatedKey(t *testing.T) {
cryptoService := c.cryptoServiceFactory()
tufKey, err := cryptoService.Create(c.role, c.gun, c.keyAlgo)
require.NoError(t, err, c.errorMsg("error creating key"))
require.NotNil(t, cryptoService.GetKey(tufKey.ID()))
// Test RemoveKey
err = cryptoService.RemoveKey(tufKey.ID())
require.NoError(t, err, c.errorMsg("could not remove key"))
retrievedKey := cryptoService.GetKey(tufKey.ID())
require.Nil(t, retrievedKey, c.errorMsg("remove didn't work"))
}
// asserts that removing key will remove it from all keystores
func (c CryptoServiceTester) TestRemoveFromMultipleKeystores(t *testing.T) {
cryptoService := c.cryptoServiceFactory()
cryptoService.keyStores = append(cryptoService.keyStores,
trustmanager.NewKeyMemoryStore(passphraseRetriever))
privKey, err := trustmanager.GenerateECDSAKey(rand.Reader)
require.NoError(t, err, c.errorMsg("error creating key"))
for _, store := range cryptoService.keyStores {
err := store.AddKey(trustmanager.KeyInfo{Role: data.CanonicalRootRole, Gun: ""}, privKey)
require.NoError(t, err)
}
require.NotNil(t, cryptoService.GetKey(privKey.ID()))
// Remove removes it from all key stores
err = cryptoService.RemoveKey(privKey.ID())
require.NoError(t, err, c.errorMsg("could not remove key"))
for _, store := range cryptoService.keyStores {
_, _, err := store.GetKey(privKey.ID())
require.Error(t, err)
}
}
// asserts that listing keys works with multiple keystores, and that the
// same keys are deduplicated
func (c CryptoServiceTester) TestListFromMultipleKeystores(t *testing.T) {
cryptoService := c.cryptoServiceFactory()
cryptoService.keyStores = append(cryptoService.keyStores,
trustmanager.NewKeyMemoryStore(passphraseRetriever))
expectedKeysIDs := make(map[string]bool) // just want to be able to index by key
for i := 0; i < 3; i++ {
privKey, err := trustmanager.GenerateECDSAKey(rand.Reader)
require.NoError(t, err, c.errorMsg("error creating key"))
expectedKeysIDs[privKey.ID()] = true
// adds one different key to each keystore, and then one key to
// both keystores
for j, store := range cryptoService.keyStores {
if i == j || i == 2 {
store.AddKey(trustmanager.KeyInfo{Role: data.CanonicalRootRole, Gun: ""}, privKey)
}
}
}
// sanity check - each should have 2
for _, store := range cryptoService.keyStores {
require.Len(t, store.ListKeys(), 2, c.errorMsg("added keys wrong"))
}
keyList := cryptoService.ListKeys("root")
require.Len(t, keyList, 4,
c.errorMsg(
"ListKeys should have 4 keys (not necesarily unique) but does not: %v", keyList))
for _, k := range keyList {
_, ok := expectedKeysIDs[k]
require.True(t, ok, c.errorMsg("Unexpected key %s", k))
}
keyMap := cryptoService.ListAllKeys()
require.Len(t, keyMap, 3,
c.errorMsg("ListAllKeys should have 3 unique keys but does not: %v", keyMap))
for k, role := range keyMap {
_, ok := expectedKeysIDs[k]
require.True(t, ok)
require.Equal(t, "root", role)
}
}
// asserts that adding a key adds to just the first keystore
// and adding an existing key either succeeds if the role matches or fails if it does not
func (c CryptoServiceTester) TestAddKey(t *testing.T) {
cryptoService := c.cryptoServiceFactory()
cryptoService.keyStores = append(cryptoService.keyStores,
trustmanager.NewKeyMemoryStore(passphraseRetriever))
privKey, err := trustmanager.GenerateECDSAKey(rand.Reader)
require.NoError(t, err)
// Add the key to the targets role
require.NoError(t, cryptoService.AddKey(data.CanonicalTargetsRole, c.gun, privKey))
// Check that we added the key and its info to only the first keystore
retrievedKey, retrievedRole, err := cryptoService.keyStores[0].GetKey(privKey.ID())
require.NoError(t, err)
require.Equal(t, privKey.Private(), retrievedKey.Private())
require.Equal(t, data.CanonicalTargetsRole, retrievedRole)
retrievedKeyInfo, err := cryptoService.keyStores[0].GetKeyInfo(privKey.ID())
require.NoError(t, err)
require.Equal(t, data.CanonicalTargetsRole, retrievedKeyInfo.Role)
require.Equal(t, c.gun, retrievedKeyInfo.Gun)
// The key should not exist in the second keystore
_, _, err = cryptoService.keyStores[1].GetKey(privKey.ID())
require.Error(t, err)
_, err = cryptoService.keyStores[1].GetKeyInfo(privKey.ID())
require.Error(t, err)
// We should be able to successfully get the key from the cryptoservice level
retrievedKey, retrievedRole, err = cryptoService.GetPrivateKey(privKey.ID())
require.NoError(t, err)
require.Equal(t, privKey.Private(), retrievedKey.Private())
require.Equal(t, data.CanonicalTargetsRole, retrievedRole)
retrievedKeyInfo, err = cryptoService.GetKeyInfo(privKey.ID())
require.NoError(t, err)
require.Equal(t, data.CanonicalTargetsRole, retrievedKeyInfo.Role)
require.Equal(t, c.gun, retrievedKeyInfo.Gun)
// Add the same key to the targets role, since the info is the same we should have no error
require.NoError(t, cryptoService.AddKey(data.CanonicalTargetsRole, c.gun, privKey))
// Try to add the same key to the snapshot role, which should error due to the role mismatch
require.Error(t, cryptoService.AddKey(data.CanonicalSnapshotRole, c.gun, privKey))
}
// Prints out an error message with information about the key algorithm,
// role, and test name. Ideally we could generate different tests given
// data, without having to put for loops in one giant test function, but
// that involves a lot of boilerplate. So as a compromise, everything will
// still be run in for loops in one giant test function, but we can at
// least provide an error message stating what data/helper test function
// failed.
func (c CryptoServiceTester) errorMsg(message string, args ...interface{}) string {
pc := make([]uintptr, 10) // at least 1 entry needed
runtime.Callers(2, pc) // the caller of errorMsg
f := runtime.FuncForPC(pc[0])
return fmt.Sprintf("%s (role: %s, keyAlgo: %s): %s", f.Name(), c.role,
c.keyAlgo, fmt.Sprintf(message, args...))
}
func testCryptoService(t *testing.T, gun string) {
roles := []string{
data.CanonicalRootRole,
data.CanonicalTargetsRole,
data.CanonicalSnapshotRole,
data.CanonicalTimestampRole,
}
for _, role := range roles {
for algo := range algoToSigType {
cst := CryptoServiceTester{
role: role,
keyAlgo: algo,
gun: gun,
}
cst.TestAddKey(t)
cst.TestCreateAndGetKey(t)
cst.TestCreateAndGetWhenMultipleKeystores(t)
cst.TestGetNonexistentKey(t)
cst.TestSignWithKey(t)
cst.TestSignNoMatchingKeys(t)
cst.TestGetPrivateKeyMultipleKeystores(t)
cst.TestRemoveCreatedKey(t)
cst.TestRemoveFromMultipleKeystores(t)
cst.TestListFromMultipleKeystores(t)
cst.TestGetPrivateKeyPasswordInvalid(t)
cst.TestGetPrivateKeyAttemptsExceeded(t)
}
}
}
func TestCryptoServiceWithNonEmptyGUN(t *testing.T) {
testCryptoService(t, "org/repo")
}
func TestCryptoServiceWithEmptyGUN(t *testing.T) {
testCryptoService(t, "")
}