Cryptologic Bytes

"On This Date in History" Calendar

1960: Inventor Gilbert Vernam died.

Thursday, February 7, 2019
1960: Inventor Gilbert Vernam died.

7 February 1960: Gilbert Vernam, pioneer inventor of machine encryption, died.

The Vernam Cipher is named after Gilbert Sandford Vernam who, in 1917, invented the polyalphabetic stream cipher and later co-invented the one-time pad cipher. His patent was filed in 1918 and is, according to the NSA, quite possibly one of the most important in cryptographic history. What we now call one-time pad encryption (OTP) was patented by Gilbert Vernam at AT&T in 1919 and enhanced by Captain Joseph Mauborgne of the Army’s Signal Corps. The earliest military application was reported by the German Kurzwellenpanorama magazine in World War I. Later it was employed by the BBC to send coded messages to Special Operations Executive agents abroad.

The largest application of OTP has been on number stations; these unlicensed, mysterious shortwave radio stations began broadcasting during the Cold War. The Vernam Cipher has also been applied to modern computing.

Join or renew a membership

Anyone, anywhere can be a member of the NCMF.

BECOME A FOUNDER

The Founders' Group spearheads the capital campaign to build the new Cyber Center for Education and Innovation - Home of the National Cryptologic Museum.

 

More Info »

Donate to the CCEI-NCM

Be a part of the future - help us build the Cyber Center for Education and Innovation - Home of the National Cryptologic Museum.

VISIT THE ARCHIVES

Check out the Cryptologic Bytes Archives for a wide variety of articles on all topics related to cryptology, codes and ciphers, related publications, Museums, and more.