Stafford Tavares: Difference between revisions
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| title = A Formal and Practical Design Procedure for Substitution-Permutation Network Cryptosystems | | title = A Formal and Practical Design Procedure for Substitution-Permutation Network Cryptosystems | ||
| publisher = Department of Electrical Engineering, Queen's University | | publisher = Department of Electrical Engineering, Queen's University | ||
| date = 1990 }}</ref> supervisor in the work that led to the [[CAST (cipher)|CAST]] family of block ciphers. | | date = 1990 }}</ref> supervisor in the work that led to the [[CAST (cipher)|CAST]] family of block ciphers. He has since done work <ref>{{citation | ||
| author = H.M. Heys and S.E. Tavares | |||
| title = On the Security of the CAST Encryption Algorithm | |||
| journal = Canadian Conference on Electrical & Computer Engineering | |||
| date = September 1994 }}</ref> on security analysis of those ciphers. | |||
Tavares was one of the proposers of the '''strict avalanche criterion''' <ref name=SAC> {{citation | author = A. F. Webster and [[Stafford E. Tavares]] | title = On the design of S-boxes | journal = Advances in Cryptology - Crypto '85 (Lecture Notes in Computer Science) | date = 1985 }} </ref>. This is a strong version of the requirement for good [[Block cipher#Avalanche|avalanche properties]]. Complementing any single bit of the input or the key should give exactly a 50% chance of a change in any given bit of output. | Tavares was one of the proposers of the '''strict avalanche criterion''' <ref name=SAC> {{citation | author = A. F. Webster and [[Stafford E. Tavares]] | title = On the design of S-boxes | journal = Advances in Cryptology - Crypto '85 (Lecture Notes in Computer Science) | date = 1985 }} </ref>. This is a strong version of the requirement for good [[Block cipher#Avalanche|avalanche properties]]. Complementing any single bit of the input or the key should give exactly a 50% chance of a change in any given bit of output. | ||
Revision as of 20:37, 26 November 2010
Stafford E. Tavares is a cryptographer who teaches at Queens University in Canada. His specialty is block cipher design and analysis; he has published extensively in that area.
Tavares was Carlisle Adams' PhD thesis[1] supervisor in the work that led to the CAST family of block ciphers. He has since done work [2] on security analysis of those ciphers.
Tavares was one of the proposers of the strict avalanche criterion [3]. This is a strong version of the requirement for good avalanche properties. Complementing any single bit of the input or the key should give exactly a 50% chance of a change in any given bit of output.
References
- ↑ C. M. Adams (1990), A Formal and Practical Design Procedure for Substitution-Permutation Network Cryptosystems, Department of Electrical Engineering, Queen's University
- ↑ H.M. Heys and S.E. Tavares (September 1994), "On the Security of the CAST Encryption Algorithm", Canadian Conference on Electrical & Computer Engineering
- ↑ A. F. Webster and Stafford E. Tavares (1985), "On the design of S-boxes", Advances in Cryptology - Crypto '85 (Lecture Notes in Computer Science)