Walter Tuchman

Walter Tuchman led the Data Encryption Standard development team at IBM.{{cite book|last=Bamford|first=James|title=The Puzzle Palace: A Report on America's Most Secret Agency|year=1983|publisher=Penguin Books|isbn=0-14-00-6748-5|pages=426–457|url=http://jya.com/pp09.htm}}{{cite journal|author=P. Kinnucan|title=Data Encryption Gurus: Tuchman and Meyer|journal=Cryptologia|volume=2|issue=4|date=October 1978|doi=10.1080/0161-117891853270|page=371}} He was also responsible for the development of Triple DES.{{Citation needed|date=November 2010}}