Edwin T. Layton, American admiral and cryptanalyst (born 1903)

Edwin Thomas Layton was a rear admiral in the United States Navy. Layton is most noted for his work as an intelligence officer before and during World War II. He was the father of the historian Edwin T. Layton, Jr.

Cryptanalysis refers to the process of analyzing information systems in order to understand hidden aspects of the systems. Cryptanalysis is used to breach cryptographic security systems and gain access to the contents of encrypted messages, even if the cryptographic key is unknown.