Vitae | Research | Publication | Professional Acti.  | Teaching

Research Interests

My main research interests are in cryptography and information security and its applications.

• Cryptology : Design and cryptanalysis of cryptographic algorithms (e.g., Block cipher, Stream Cipher, Hash function, MAC, Modes of operations, public-key cryptosystems, and so on.), Practice-oriented provable security.
• Ubiquitous and Multimedia Security : RFID, Access control, Multimedia algorithm and so on.
• Ubiquitous and pervasive computing, Context awareness, Intelligent computing, and Ubiquitous applications and services .
• Digital forensics, Game, and Business Continuity Plan and Management.

Project Experience

[2009.03.01 ~ 2007.12.31] Research on new cryptographic technologies, the Ministry of Information and Communication

[2003.09.01 ~ 2004.04.27] Security evaluations on the newest block ciphers, ETRI

[2004.06.01 ~ 2005.02.28] Study on pseudorandomness of block ciphers, ETRI

[2004.04.01 ~ 2004.11.30] Study on cryptanalysis of block-wise stream ciphers, The Attached Institute of ETRI

[2004.03.01 ~ 2006.02.28] Development of the next generation cryptosystems, MIC

[2004.05.01 ~ 2005.04.30] Security analysis of the newest stream ciphers and block ciphers, University of Seoul

[2005.04.15 ~ 2005.11.14] Provable security of generalized Feistel structures, The Attached Institute of ETRI

[2005.10.01 ~ 2006.03.30] Development of block cipher suitable for software environment, Samsung Elec.

[2005.11.01 ~ 2006.10.31] Design and analysis of secure block cipher against related-key attack, KRF.

[2006.03.01 ~ 2006.10.31] Provable security of authenticated encryption schemes, The Attached Institute of ETRI

[2006.04.01 ~ 2006.12.15] Correlation and algebraic attacks on stream ciphers, KIISC

[2006.05.01 ~ 2007.04.30] Provable security of block cipher structure and modes of operation, University of Seoul

[2006.05.01 ~ 2007.02.28] BK21-Ubiquitous Information Security, MIC

[2007.03.01 ~ 2007.10.31] Design of hash function suitable for RFID and USN, Korea Information Security Agency

[2008.01.01 ~ 2008.02.28] Research on new cryptographic technologies, MIC

[2008.04.01 ~ 2008.11.30] Development of Seed-192 and Seed-256 block ciphers, KISA

[2008.05.01 ~ 2008.12.31] Study on new design rationale of hash function, Korea Science and Engineering Foundation

[2010.05.01 ~ 2011.04.30] Fundamental research for next generation of digital evidence management, NRF

[2011.05.01 ~ 2012.04.30] Fundamental research for next generation of digital evidence management, NRF