func (w *Put) chooseKeyID(database store.FileStore) error {
if len(*w.keyID) != 0 {
return nil
}
existingKeys, err := database.GetKeyIds()
if err != nil && !os.IsNotExist(err) {
return err
}
if len(existingKeys) > 1 {
return errMultipleKeys
} else if len(existingKeys) == 0 {
return errNoKeySpecified
}
for keyID := range existingKeys {
fmt.Fprintf(os.Stderr, "Using existing key %s\n", keyID)
*w.keyID = keyID
break
}
return nil
}
// Run runs the command.
func (w *Write) Run(database store.FileStore, provider providers.Provider) error {
if len(*w.keyID) == 0 {
existingKeys, err := database.GetKeyIds()
if err != nil && !os.IsNotExist(err) {
return err
}
if len(existingKeys) > 1 {
return errMultipleKeys
} else if len(existingKeys) == 0 {
return errNoKeySpecified
}
for keyID := range existingKeys {
fmt.Fprintf(os.Stderr, "Using existing key %s\n", keyID)
*w.keyID = keyID
break
}
}
envelopeKey, err := provider.GenerateEnvelopeKey(*w.keyID)
if err != nil {
return err
}
box := algorithms.New(*w.algo)
ciphertext, err := box.Encrypt(envelopeKey.GetPlaintext32(), []byte(*w.value))
if err != nil {
return err
}
encoded := base64.StdEncoding.EncodeToString(ciphertext)
value := store.Value{
Algorithm: box.Label(),
KeyID: *w.keyID,
KeyCiphertext: base64.StdEncoding.EncodeToString(envelopeKey.Ciphertext),
Ciphertext: encoded,
}
return database.Put(*w.name, value)
}