toJson method
Converts this object to a JSON-serializable map.
Binary data is encoded as base64 strings for safe transmission over JSON.
Example:
final json = saltedKey.toJson();
final jsonString = jsonEncode(json); // Serialize to JSON string
Implementation
Map<String, dynamic> toJson() => {
'key': base64.encode(key),
'salt': base64.encode(salt),
};