Çetin Kaya Koç

Çetin Kaya Koç
Born (1957-01-23) 23 January 1957
Ağrı, Turkey
OccupationsCryptographic engineer, author and academic
Academic background
EducationB.S. Electrical Engineering
Ph.D. Electrical and Computer Engineering
Alma materİstanbul Technical University
University of California Santa Barbara
ThesisParallel Algorithms for Interpolation and Approximation (1988)
Academic work
InstitutionsUniversity of California Santa Barbara
University of Houston
Oregon State University
Websitecetinkayakoc.net
koclab.net

Çetin Kaya Koç is a cryptographic engineer, author, and academic. Koç is elected as an IEEE Fellow (2007) and IEEE Life Fellow (2023) for his contributions to cryptographic engineering.[1] He has served as a guest co-editor for several issues of the IEEE Transactions on Computers[2][3][4][5] and is the founding editor-in-chief for the Journal of Cryptographic Engineering.[6] Koç co-founded, with Christof Paar, the Cryptographic Hardware and Embedded System Conference in 1999.[7]

Biography & Education

Çetin Kaya Koç was born in 1957 in Ağrı, a city in the eastern region of Türkiye known for its mountainous landscape.[8] He completed his primary and secondary education in Ağrı. According to interviews, his childhood in Ağrı—especially access to a public library established when he was in middle school—played a critical role in shaping his analytical and academic ambitions.[9]

Koç graduated from Ağrı Naci Gökçe High School before moving for higher education. He earned his B.S. in Electrical Engineering from İstanbul Technical University and later completed his Ph.D. in Electrical & Computer Engineering at the University of California, Santa Barbara.[10]

He prefers to keep his family life private and rarely discusses personal matters publicly, focusing instead on his research, teaching, and leadership in cryptographic engineering.[11]

Career

Koç served as an assistant professor at the University of Houston from 1988 to 1992,[12] and then progressed through assistant, associate, and full professor roles at Oregon State University from 1992 to 2007. He co-founded the Conference on Cryptographic Hardware and Embedded Systems in 1999,[13] and established workshops including the International Workshop on the Arithmetic of Finite Fields (WAIFI), Security Proofs for Embedded Systems (PROOFS), and Attacks and Solutions in Hardware Security (ASHES) to address cryptographic hardware, finite fields, and security methodologies.[14][15] In 2001, he created the Information Security Laboratory at Oregon State University to support research and development in secure computing.[16]

During his tenure at RSA Laboratories from 1991 to 1997, Koç collaborated with Ron Rivest, Taher ElGamal, and Burt Kaliski to develop cryptographic software implementations. He contributed to over 50 cryptographic hardware and software systems,[17] including cryptographic layers for Rivest–Shamir–Adleman Reference Library,[18] BSAFE, PGP, CDSA (Intel), and TOR.[19]

Research interests

Koç's research focuses on the practical implementation of modern cryptographic systems, with an emphasis on secure and efficient computation. His work involves the design and optimization of cryptographic algorithms, hardware acceleration, homomorphic encryption, post-quantum cryptography, and the use of machine learning techniques in security analysis.

His research portfolio also encompasses secure hardware architecture, strategies for mitigating side-channel attacks, and models for privacy-preserving computation applied within embedded systems and cloud-computing infrastructures.

As of 2025, Koç holds 13 United States patents related to cryptographic hardware and secure computation, many of which were developed in collaboration with international researchers and industry partners.[20]

Cryptographic Engineering

The term "cryptographic engineering" was invented to describe interdisciplinary research and development efforts leading to secure and efficient hardware and software realizations of cryptographic systems. Efficient hardware architectures—optimized for time, area, and power consumption—need to be designed, implemented, and deployed in this context. Furthermore, general-purpose (platform-independent) as well as special-purpose software implementing cryptographic functions on embedded devices are needed. An additional challenge is that these implementations must be resilient against cryptanalytic attacks from adversaries who can exploit both primary channels (such as communications) and secondary channels (including timing, power, electromagnetic, or acoustic information).

Since 1988, Prof. Çetin Kaya Koç has been engaged in the development of cryptographic engineering techniques, focusing on both academic research and industrial applications. In addition to founding a journal[21], writing articles and books[22][23] on this subject, he also co-founded a research and development organization, CryptoCode, with his former doctoral and master’s students, specializing in cryptographic engineering.[24]

Books

Koç has published numerous journal articles, conference papers, and co-authored books in cryptography and computational science. His research focuses on secure cryptographic systems, efficient finite-field arithmetic, and high-performance hardware and software architectures.[25][26][27]

He has co-authored the following books:

  • Cryptographic Algorithms on Reconfigurable Hardware (2007) – Discusses implementation of cryptographic algorithms on FPGAs and reconfigurable architectures.[28]
  • Cryptographic Engineering (2008) – Covers design methodologies for cryptographic hardware and software.[29]
  • Open Problems in Mathematics and Computational Science (2014) – Presents unresolved challenges in mathematics and computational sciences.[30]
  • Cyber-Physical Systems Security (2018) – Discusses security solutions for cyber-physical systems and embedded devices.[31]
  • Partially Homomorphic Encryption (2021) – Explores partially homomorphic encryption and implications for secure hardware/software.[32]

Koç's publications have contributed to research in secure computation, cryptographic hardware acceleration, and system security.[33]

Personal life

Çetin Kaya Koç was born in 1957 in Ağrı, a city in the northeastern region of Türkiye bordering Iran and Armenia.[34] Ağrı is known for its long, cold winters and mountainous terrain.[35]

Koç grew up in Ağrı and completed his primary and secondary education in the region before pursuing higher education in electrical engineering and computer science. His upbringing in a rural, historically significant region has been highlighted in several interviews. and biographical sources as influential in his analytical and problem-solving skills.[36][37]

He maintains a private family life and has emphasized education and research in public statements, without publicly discussing personal details beyond his professional career.[38]

Awards and honours

Koç has been recognized by both academic institutions and professional societies for his contributions to cryptographic engineering and secure system design.[39]

  • 2001 – Award for Outstanding and Sustained Research Leadership, Oregon State University.[40][41]
  • 2007 – Elected Fellow of the Institute of Electrical and Electronics Engineers (IEEE) for contributions to cryptographic engineering.[42][43]
  • 2020 – International Fellowship for Outstanding Researchers, Scientific and Technological Research Council of Türkiye (TÜBİTAK).[44][45]
  • 2023 – Life Fellow of the IEEE for sustained contributions to cryptographic engineering.[46][47]

International memberships and recognitions

Koç has participated in international committees and workshops focused on cryptography and finite-field arithmetic, contributing to the development and organization of research communities.

  • Member of the steering committee of the International Workshop on the Arithmetic of Finite Fields (WAIFI), which addresses research and applications in finite-field arithmetic and cryptographic systems.[48]
  • Member of the steering committee of Security Proofs for Embedded Systems (PROOFS), an international workshop on formal security verification for embedded cryptographic systems.[49]

Professional Accomplishments

  • Founding Editor-in-Chief of the Journal of Cryptographic Engineering (JCEN), launched in January 2011.[50]
  • Co-founder of the Conference on Cryptographic Hardware and Embedded Systems (CHES), first held in 1999.[51]
  • Co-founder and steering-committee member of the International Workshop on the Arithmetic of Finite Fields (WAIFI), launched in 2007.[52]
  • Co-founder and steering-committee member of the Security Proofs for Embedded Systems (PROOFS) Workshop, launched in 2012.[53]
  • Steering committee member of ACM Workshop on Attacks and Solutions in Hardware Security Workshop (ASHES), launched in 2017.[54]
  • Member of the editorial board of IEEE Transactions on Computers, since 2003.[55][56][57]

Selected articles

  • Ç. K. Koç, T. Acar, and B. S. Kaliski Jr. "Analyzing and comparing Montgomery multiplication algorithms." IEEE Micro, 16(3):26–33, June 1996. [58]
  • B. Sunar and Ç. K. Koç. "Mastrovito multiplier for all trinomials." IEEE Transactions on Computers, 48(5):522–527, May 1999. [59]
  • A. F. Tenca and Ç. K. Koç. "A scalable architecture for modular multiplication based on Montgomery's algorithm." IEEE Transactions on Computers, 52(9):1215–1221, September 2003. [60]
  • O. Acıiçmez, J. P. Seifert, and Ç. K. Koç. "Predicting secret keys via branch prediction." Topics in Cryptology, The Cryptographers' Track at the RSA Conference, CT-RSA 2007, M. Abe, editor, pages 225–242, Springer, LNCS Nr. 4377, San Francisco, California, February 5–9, 2007. [61]
  • Ç. K. Koç. "Algorithms for inversion mod p^k." IEEE Transactions on Computers, 69(6):907–913, June 2020. [62]
  • J. Zhang, J. Huang, L. Zhao, D. Chen, and Ç. K. Koç. "ENG25519: Faster TLS 1.3 handshake using optimized X25519 and Ed25519." The 33rd USENIX Symposium, Philadelphia, Pennsylvania, pages 6381–6398, August 14–16, 2024. (USENIX 2024 Distinguished Paper Award) [63]
  • O. Acıiçmez, Ç. K. Koç, and J. P. Seifert. "On the power of simple branch prediction analysis." ACM Symposium on Information, Computer and Communications Security, AsiaCCS 2007, R. Deng and P. Samarati, editors, pages 312–320, Singapore, March 20–22, 2007. (ACM Asia CCS 2025 Test-of-Time Award) [64]

References

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  8. ^ "Böyle bir bilim adamı Tayyip Erdoğan'ı nasıl destekler?". Yeni Şafak. Retrieved 16 November 2025.
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  14. ^ "Ashes'20 Proceedings".
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  18. ^ "RSAREF – Rivest–Shamir–Adleman Reference Library". SourceForge.
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  31. ^ "Cyber-Physical Systems Security". Springer. Retrieved 13 November 2025.
  32. ^ "Partially Homomorphic Encryption". Springer. Retrieved 13 November 2025.
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  34. ^ "Ağrı Province". Encyclopaedia Britannica. Retrieved 14 November 2025.
  35. ^ "Geography of Ağrı". Ağrı İbrahim Çeçen University. Retrieved 14 November 2025.
  36. ^ "Faculty Profile, UCSB". Retrieved 13 November 2025.
  37. ^ Koç, Çetin Kaya (2006). "Computer arithmetic and cryptography". Philosophical Transactions of the Royal Society A. 364 (1849): 1975–1996. doi:10.1098/rsta.2006.1780.
  38. ^ Koç, Çetin Kaya (2009). Cryptographic Engineering. Springer. ISBN 978-0-387-71816-3.
  39. ^ Koç, Çetin Kaya (2006). "Computer arithmetic and cryptography". Philosophical Transactions of the Royal Society A. 364 (1849): 1975–1996. doi:10.1098/rsta.2006.1780.
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  57. ^ https://www.computer.org/csdl/journal/tc/2018/11
  58. ^ https://ieeexplore.ieee.org/document/502403
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  61. ^ https://dl.acm.org/doi/10.1007/11967668_15
  62. ^ https://ieeexplore.ieee.org/document/8976264
  63. ^ https://www.usenix.org/conference/usenixsecurity24/presentation/zhang-jipeng
  64. ^ https://asiaccs2025.hust.edu.vn/test-of-time-award-2/
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