Data Encryption Standard (DES)
DES is an older encryption algorithm that is used to convert 64-bit plaintext data into 48-bit encrypted ciphertext. It uses symmetric keys (which means same key for encryption and decryption). It is kind of old by today’s standard but can be used as a basic building block for learning newer encryption algorithms.
Characteristics of DES
- Same symmetric key: DES uses symmetric-key algorithm and therefore, encryption and decryption can be done by single key using same algorithm.
- Easier Implementation: DES was designed for hardwares rather than software and shows efficiency and fast implementation in hardwares.
- Cipher technique: Transposition and substitution cipher is used: This algorithm uses both transposition cipher and substitution cipher technique.
- Building block: DES technique acts as a building block for other cryptographic algorithms.
Basics of Cryptographic Algorithms
Cryptography is a process of hiding transmitted information by the sender such that it may be read only by the intended recipient. In this article, we will learn more about various cryptographic algorithms. Cryptography is widely used in various fields such as end-to-end messaging, banking and finance, secure web communication, and access control.