Encryption is an age-old technique used for protecting privacy. In this information age, where privacy is constantly being challenged, the need for encryption has not been greater.
How does encryption work?
First, readable data is converted into an unreadable state; therefore, making the content encrypted. This is done through a complex algorithm, called a cipher. The final phase, which is called decryption, uses a unique key to render the [unreadable] data readable once again.
Types of encryption.
The simplest algorithm for digital encryption is called symmetric-key. It only uses a single key for encrypting and decrypting data. This key has to be shared between both parties (the encryptor and the decryptor); therefore, increasing the risk for unauthorize interception. So why use symmetric-key in the first place? The answer, when compared to the alternative, symmetric-key consumes lesser resources.