Data controller – this is the person, within an organisation, who is responsible (in the UK, anyway) for the organisation’s compliance with the Data Protection Act.

Data Encryption Standard (DES) – is a widely used symmetric encryption standard. It is used for long communications and is relatively speedy to use. It is, however, quite an old system and this has led to triple DES (or AES), in which the same data are encrypted three times, employing different keys, which exponentially increases the strength of the encryption. Only the creator and receiver have the DES key (or keys); the key(s) are usually exchanged using either a shared master key or a pre-existing key exchange protocol.

Data Protection Act 1998 (DPA) – the legislation (UK) that ...

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