(= Data Encryption Standard, "andmete krüpteerimise standard")

olemus
sümmeetrilise võtmega plokkšiffer:
- võtme pikkus 56 bitti
- lähiminevikus populaarne
- 1976-2001 USA standard, AES-i kehtestamiseni

ülevaateid
https://www.youtube.com/watch?v=iayDUAGu9Ec

http://koclab.cs.ucsb.edu/teaching/cs178/docx/d-des.pdf

http://www.facweb.iitkgp.ac.in/~sourav/DES.pdf

https://academic.csuohio.edu/yuc/security/Chapter_06_Data_Encription_Standard.pdf

https://www.cse.ust.hk/faculty/cding/CSIT571/SLIDES/readdes.pdf

http://page.math.tu-berlin.de/~kant/teaching/hess/krypto-ws2006/des.htm

https://symbiosisonlinepublishing.com/computer-science-technology/computerscience-information-technology32.php

turvalisus
https://tools.ietf.org/html/rfc4772

https://crypto.junod.info/lincrypt.pdf

vt ka
- 3DES
- S-DES