Clifford Neuman
American computer scientist who helped carry Kerberos off the MIT campus and into an internet standard.
B. Clifford Neuman met Kerberos through MIT's Project Athena and became one of the principal designers of version 5. He wrote RFC 1510 (1993) with John Kohl, and the 1994 paper Kerberos: An Authentication Service for Computer Networks, with Theodore Ts'o, is where most people learned the protocol. Version 5 added what v4 lacked: pluggable encryption, delegation and cross-realm trust.
At the University of Southern California's Information Sciences Institute he also built Prospero, a distributed file system that Archie used as one of its interfaces, and NetCheque, an early electronic payment system. Kerberos is what survived: every logon to a Windows domain still runs through his protocol.