Jerome Howard “Jerry” Saltzer, who was born on October 9, 1939, graduated from MIT in 1966 with a Sc. D in Electrical Engineering. Saltzer led a research group in the development of big projects such as the Internet and ring network topology for LANs.He was the creator of the first TCP/IP stack for the IBM PC and the Kerberos protocol, which is still used widely today to ensure privacy and security.
Michael Schroeder, born in 1945 in Richland, Washington was the co-inventor of the Needham-Schroeder security protocol. This protocol operates in both symmetric encryption, as well as public-key encryption. In 2007, Schroeder received the National Computer Science Security Award given by NIST/NSA.
You can read Saltzer and Schroeder’s seminal paper on the security design principles here.