There are many options for storing data in a digital form. In most cases, the storing is performed within a private digital storage, a database, that allows for subsequent editing or deleting of data. Access to the storage and data management is enabled only to the entity that owns the database, or any other entity which is authorized by the storage owner or database manager to manage the data. In some cases, there is a requirement for a publicly
available/accessible digital storage. When personal data is kept in a storage for which public access is not permitted, then such storage must be protected in such a way that an unauthorized access is not permitted, which, by default, public digital storages do not restrict. In such cases, the data can be protected using cryptographic methods that ensure data unreadability even though data is publicly available.
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