Encryption
= What is encryption ? =
Encryption is the method to convert information into secret code that hides the information's true meaning. There are two main types of data encryption; asymmetric encryption, also known as public-key encryption, and symmetric encryption. Modern encryption algorithms has replaced the outdated data encryption standard (DES), and provide confidentiality and drive key security initiatives including authentication, integrity, and non-repudiation - Authentication allows for the verification of a message’s origin - Integrity provides proof that a message’s contents have not changed since it was sent - Non-repudiation ensures that a message sender cannot deny sending the message.
= Asymetric encryption =
In asymmetric encryption - also known as public key encryption - the sender and the recipient use two different keys, a public key and a private key. Data encrypted with the public key can only be decrypted with the private key.
= Symmetric encryption =
In symmetric encryption, the same key both encrypts and decrypts data. For symmetric encryption to work, the two or more communicating parties must know what the key is; for it to remain secure, no third party should be able to guess or steal the key.
assymetric encryption symmetric encryption DES confidentiality
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