Leo Rosen
![Leo Rosen](https://upload.wikimedia.org/wikipedia/commons/a/a0/Leo_Rosen.jpg)
Rosen was born in Woodbine, New Jersey, to Joseph Rosen and Catherine Shubina, emigrants from the Russian Empire.
Rosen built a replica of PURPLE which turned out (when a machine was found years later) to use stepping switches similar to those in common use at that time in the U.S. This machine was used to decode the Japanese diplomatic messages, sometimes before the Japanese ambassadors had themselves. Rosen also contributed his engineering talents during and after the war at Arlington Hall, after the S.I.S. became the Army Security Agency, later to become AFSA and finally the present National Security Agency.
He died in Arlington, Virginia, aged 71.
In 2010, he was posthumously inducted into the NSA Hall of Honor for his contributions to the cryptology world. He was represented by his son Lawrence Rosen and grandchildren Michael and Christine Rosen. Provided by Wikipedia
1
Published: c2002.
Links: Get full text