4th year 1st semester,
The encryption standards such as DES (Data Encryption Standard), AES (Advanced Encryption Standard) and EES (Escrowed Encryption Standard) are widely used to solve the problem of communication over an insecure channel.Encryption is a well-established technology for protecting sensitive data. However, once encrypted, data can no longer be easily queried aside from exact matches [15], [16], [17]. This paper will present some basic knowledge on about importance of encryption, different types of encryption, VoIP encryption and image encryption. VoIP (voice over internet protocol) is a one of the best technology available for voice communication which has the potential to completely rework the world's cellular systems.
