You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
125 lines
3.4 KiB
125 lines
3.4 KiB
package cryptostore
|
|
|
|
import keys "github.com/tendermint/go-keys"
|
|
|
|
// Manager combines encyption and storage implementation to provide
|
|
// a full-featured key manager
|
|
type Manager struct {
|
|
es encryptedStorage
|
|
}
|
|
|
|
func New(coder Encoder, store keys.Storage) Manager {
|
|
return Manager{
|
|
es: encryptedStorage{
|
|
coder: coder,
|
|
store: store,
|
|
},
|
|
}
|
|
}
|
|
|
|
// exists just to make sure we fulfill the Signer interface
|
|
func (s Manager) assertSigner() keys.Signer {
|
|
return s
|
|
}
|
|
|
|
// exists just to make sure we fulfill the Manager interface
|
|
func (s Manager) assertKeyManager() keys.Manager {
|
|
return s
|
|
}
|
|
|
|
// Create adds a new key to the storage engine, returning error if
|
|
// another key already stored under this name
|
|
//
|
|
// algo must be a supported go-crypto algorithm:
|
|
//
|
|
func (s Manager) Create(name, passphrase, algo string) (keys.Info, error) {
|
|
gen, err := getGenerator(algo)
|
|
if err != nil {
|
|
return keys.Info{}, err
|
|
}
|
|
key := gen.Generate()
|
|
err = s.es.Put(name, passphrase, key)
|
|
return info(name, key), err
|
|
}
|
|
|
|
// List loads the keys from the storage and enforces alphabetical order
|
|
func (s Manager) List() (keys.Infos, error) {
|
|
res, err := s.es.List()
|
|
res.Sort()
|
|
return res, err
|
|
}
|
|
|
|
// Get returns the public information about one key
|
|
func (s Manager) Get(name string) (keys.Info, error) {
|
|
_, info, err := s.es.store.Get(name)
|
|
return info, err
|
|
}
|
|
|
|
// Sign will modify the Signable in order to attach a valid signature with
|
|
// this public key
|
|
//
|
|
// If no key for this name, or the passphrase doesn't match, returns an error
|
|
func (s Manager) Sign(name, passphrase string, tx keys.Signable) error {
|
|
key, _, err := s.es.Get(name, passphrase)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
sig := key.Sign(tx.SignBytes())
|
|
pubkey := key.PubKey()
|
|
return tx.Sign(pubkey, sig)
|
|
}
|
|
|
|
// Export decodes the private key with the current password, encodes
|
|
// it with a secure one-time password and generates a sequence that can be
|
|
// Imported by another Manager
|
|
//
|
|
// This is designed to copy from one device to another, or provide backups
|
|
// during version updates.
|
|
func (s Manager) Export(name, oldpass, transferpass string) ([]byte, error) {
|
|
key, _, err := s.es.Get(name, oldpass)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
res, err := s.es.coder.Encrypt(key, transferpass)
|
|
return res, err
|
|
}
|
|
|
|
// Import accepts bytes generated by Export along with the same transferpass
|
|
// If they are valid, it stores the password under the given name with the
|
|
// new passphrase.
|
|
func (s Manager) Import(name, newpass, transferpass string, data []byte) error {
|
|
key, err := s.es.coder.Decrypt(data, transferpass)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return s.es.Put(name, newpass, key)
|
|
}
|
|
|
|
// Delete removes key forever, but we must present the
|
|
// proper passphrase before deleting it (for security)
|
|
func (s Manager) Delete(name, passphrase string) error {
|
|
// verify we have the proper password before deleting
|
|
_, _, err := s.es.Get(name, passphrase)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return s.es.Delete(name)
|
|
}
|
|
|
|
// Update changes the passphrase with which a already stored key is encoded.
|
|
//
|
|
// oldpass must be the current passphrase used for encoding, newpass will be
|
|
// the only valid passphrase from this time forward
|
|
func (s Manager) Update(name, oldpass, newpass string) error {
|
|
key, _, err := s.es.Get(name, oldpass)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// we must delete first, as Putting over an existing name returns an error
|
|
s.Delete(name, oldpass)
|
|
|
|
return s.es.Put(name, newpass, key)
|
|
}
|