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Clifford Cocks information


Clifford Cocks
CB FRS
Clifford Cocks at the Royal Society admissions day in London, July 2015
Born
Clifford Christopher Cocks

(1950-12-28) 28 December 1950 (age 73)[1]
Prestbury, Cheshire, England, United Kingdom
NationalityBritish
EducationManchester Grammar School
Alma materUniversity of Cambridge (BA)
Known for
  • RSA encryption
  • Public-key cryptography
  • Cocks IBE scheme
Scientific career
FieldsCryptography
Institutions
  • Government Communications Headquarters
  • University of Oxford

Clifford Christopher Cocks CB FRS[2] (born 28 December 1950) is a British mathematician and cryptographer. In the early 1970s, while working at the United Kingdom Government Communications Headquarters (GCHQ), he developed an early public-key cryptography (PKC) system. This pre-dated commercial offerings, but due to the classified nature of Cocks' work, it did not become widely known until 1997 when the work was declassified.

As his work was not available for public review until 1997, it had no impact on numerous commercial initiatives relating to Internet security that had been commercially developed and that were well established by 1997. His work was technically aligned with the Diffie–Hellman key exchange and elements of the RSA algorithm, these well known systems were independently developed and commercialized.[3][4]

  1. ^ Anon (2016). "Cocks, Clifford Christopher". Who's Who (online Oxford University Press ed.). Oxford: A & C Black. doi:10.1093/ww/9780199540884.013.U261614. (Subscription or UK public library membership required.)
  2. ^ Anon (2015). "Mr Clifford Cocks CB FRS". London: Royal Society. Archived from the original on 17 November 2015.
  3. ^ "Clifford Cocks, James Ellis, and Malcolm Williamson". National Security Agency/Central Security Service. Retrieved 18 November 2023.
  4. ^ "The Alternative History of Public-Key Cryptography". cryptome.org. Retrieved 18 November 2023.

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