#003 · Security ProfessionalsIconicLocked in

Ron Rivest

The R in RSA

RSA, MD5, RC4 and a career of primitives everyone uses

Rating

97Impact score
Technical depth98
Defensive craft90
Research97
Influence96
FromUSA
Era1977–present

Domains

Public-key cryptographyHash functionsElection security

Scouting report

Co-invented the RSA cryptosystem at MIT in 1977 with Shamir and Adleman, turning public-key cryptography from a proposal into something you could ship. Went on to design MD2, MD4, MD5, RC4, RC5 and RC6, co-author the standard algorithms textbook, and spend his later career on verifiable election systems. Turing Award, 2002.

Curator’s note

Half the acronyms in a 1990s protocol stack trace back to one office at MIT.

Portrait

Painted from a photograph of Ron Rivest by Sherman,_Rivest,_and_Chaum.jpg: carback1 derivative work: Bonnifac (talk), licensed CC BY-SA 3.0.

Sources