Deletes the encrypted value associated with the key.
true if the key was deleted, or false if the key didn't exist.
true
false
Retrieves an encrypted value associated with the key.
The deciphered value, or null if key wasn't found or if password is incorrect.
null
Returns true if the key exists in the storage, or false otherwise.
Associates a value with a key in an encrypted storage.
A key to set.
A value to write.
The password that is used to cipher the value.
true if the value was written to the storage, or false otherwise.
Deletes the encrypted value associated with the key.