StaticcreateCreate a new passphrase-based [SecretStorageKey].
StaticcreateCreate a new random [SecretStorageKey].
StaticfromRestore a [SecretStorageKey] from the given input and the description
of the key.
The [SecretStorageKeyEventContent] will contain the description of the
[SecretStorageKey]. The constructor will check if the provided input
string matches to the description.
The input can be a passphrase or a Base58 export of the
[SecretStorageKey].
A key for encrypting/decrypting data in secret storage