Burt Kaliski
RSA Laboratories' first chief scientist and the de facto editor of the PKCS standards that nearly all public-key cryptography on the internet rests on.
Burton S. Kaliski Jr. earned his PhD at MIT in 1988 under Ron Rivest and the following year helped start RSA Laboratories, the research arm of RSA Data Security. There he led the Public-Key Cryptography Standards — PKCS #1 for RSA encryption and signatures, PKCS #5 for password-based encryption, and several more. Formally they were company documents, but since nobody else had written down how to actually format an RSA message, they became the industry's.
Kaliski wrote PKCS #1 v2.0 with OAEP padding and PKCS #5 v2.0 (RFC 2898, 2000), which defines PBKDF2. When EMC bought RSA in 2006 he went along, and in 2011 he became CTO of Verisign. PBKDF2 lives on in password storage long after everyone started recommending something more memory-hungry.