Returns a specification to start this module under a supervisor.

See Supervisor.

Decrypts data using the appropriate cipher.

Returns {:ok, plaintext} or {:error, reason}.

Encrypts data using the default cipher.

Examples

encrypted = Tango.Vault.encrypt("sensitive_token")
decrypted = Tango.Vault.decrypt(encrypted)

Gets the encryption key from application configuration.

This function is called by Cloak to get the encryption key at runtime.