Stafford Emanuel Tavares is a Canadian cryptographer, professor emeritus at Queen's University. His notable work includes the design (with Carlisle Adams) of the block ciphers CAST-128 and CAST-256.^{[citation needed]} He also helped organize the first Selected Areas in Cryptography (SAC) workshop in 1994. Since 2003, SAC has included an invited lecture in his honor, the Stafford Tavares Lecture.^[1][2]

Tavares received his Ph.D. in 1968 from McGill University.^[3]

In 2018 he was elected as a fellow of the International Association for Cryptologic Research, "for significant contributions to the design and analysis of block ciphers, for founding the SAC conference, and for service to the IACR".^[4]

• Stafford Tavares publications indexed by Google Scholar