Computer Science : S2 : L5 : Encryption

Encryption

The process of altering data into an unreadable form to prevent unauthorized access.

Caesar cipher

A form of encryption where letters are replaced by other letters from a fixed distance.

Shift cipher

A type of encryption that involves shifting the letters by a certain number of places.

Plain text

The original data before it is encrypted.

Ciphertext

The encrypted form of the data.

Symmetric encryption

Encryption method that uses a single key for both encryption and decryption.

Asymmetric encryption

Encryption method that uses a public and private key pair for encryption and decryption.

Public key

A key used in asymmetric encryption to encrypt data.

Private key

A key used in asymmetric encryption to decrypt data.

Combined encryption

Encryption method that combines the use of private and public keys to ensure authenticity and integrity of the message.