How does DES encryption work?

by | Feb 14, 2020 | CompTIA, Data Security, Encryption, Exclusive Articles

DES Encryption Algorithm

What is DES?

DES or Data Encryption Standard is a symmetric key algorithm that was developed in the 1970s and submitted to the National Bureau of Standards (NBS), which is now known as the National Institute of Standards and Technology (NIST). The algorithm was published as an official Federal Information Processing Standard (FIPS) in 1977. DES is a block cipher that divides the input plaintext into 64-bit blocks and encrypts each block with the help of a 64-bit key. In this 64-bit key, only 56 bits are randomly generated and the rest of the bits are for error detection. The output ciphertext is 64-bit.

How does the DES encryption algorithm work? In this article, we would discuss that in detail.

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Amrita Mitra

Author

Ms. Amrita Mitra is an author, who has authored the books “Cryptography And Public Key Infrastructure“, “Web Application Vulnerabilities And Prevention“, “A Guide To Cyber Security” and “Phishing: Detection, Analysis And Prevention“. She is also the founder of Asigosec Technologies, the company that owns The Security Buddy.

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