Jung Hee Cheon

Associate Professor

Jung Hee Cheon is an associate professor of the Department of Mathematics and
a member of Information Security and Cryptology Research Center in Seoul National University. His research interests include computational number theory, cryptography and information security.

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Office Hour : Monday or Wednesday 16:20-17:20. Otherwise send an email.

Academic Sevices

1.	Editorial Board Member
	- Journal of KIISC
	- Computer Standards and Interface

2.	Program Co-Chair
	- 2008: ICISC 2008

3.	Program Committee Member
	- 2009: PKC 2009
	- 2007: CT-RSA 2007, PKC 2007, Eurocrypt 2007, Asiacrypt 2007, ACM-DRM 2007
	- 2006: Vietcrypt 2006, ICISC 2006, ISITA 2006
	- 2005: WISA 2005, ACNS 2005, CANS 2005, ICISC 2005

Selected Publications

2009

J Cheon, "Discrete Logarithm Problems with Auxiliary Inputs," To appear in Journal of Cryptology

2008

J. Cheon, J. Hong, M. Kim, "Speeding up Pollard Rho Method on Prime Fields,"
Proc. of Asiacrypt 2008, LNCS 5350, pp. 471-488, 2008

Jung Hee Cheon, Nam-Su Jho, Myung-Hwan Kim, and Eun Sun Yoo,
"Skipping, Cascade, and Combined Chain Schemes for Broadcast Encryption,"
IEEE Transaction on Information Theory 54(11), pp. 5155-5171, 2008

Ali Zandi, Jung Hee Cheon, and Stanislaw Jarecki,
"Multisignatures Secure under the Discrete Logarithm Assumption and a Generalized Forking Lemma,"
ACM CCS 2008, pp. 449-458, 2008

J. Cheon and H. Kim, "Analysis of Low Hamming Weight Product,"
Discrete Applied Mathematics 156 (2008), pp. 2264-2269

J. Cheon, N. Hopper, Y. Kim, and I. Osipkov, "Provable Secure Timed-Release Public Key Encryption,"
ACM Transactions on Information and System Security(TISSEC), Vol 11, No. 2, Article No. 4 , 2008

2006

J. Cheon and D. Lee, "Use of Sparse and/or Complex Exponents in Batch Verification of Exponentiations,"
IEEE Transactions on Computers, Vol 55, No. 12, pp. 1536-1542, 2006(December 2006).

Crypto and Eurocrypt papers

J. Cheon, "Security Analysis of the Strong Diffie-Hellman Problem,"
Proc. of EUROCRYPT 2006, LNCS 4004, pp. 1-11, 2006.

N. Jho, J. Hwang, J. Cheon, M. Kim, D. Lee, and E. Yoo, "One-way Chain Based Broadcast Encryption Schemes,"
Proc. of EUROCRYPT 2005, LNCS 3494, pp. 559-574, 2005.

J. Cheon, B. Jun, "A Polynomial Time Algorithm for the Braid Diffie-Hellman Conjugacy Problem,"
Proc. of CRYPTO 2003, LNCS 2729, pp. 212-225, 2003.

J. Cheon, "Nonlinear Vector Resilient Functions,"
Proc. of CRYPTO 2001, LNCS 2139, pp. 458-469, 2001.

K. Ko, S. Lee, J. Cheon, J. Han, J. Kang, and C. Park, "New Public-Key Cryptosystem Using Braid Groups,"
Proc. of CRYPTO 2000, LNCS 1880, pp. 166-183, 2000.

J. Cheon, S. Chee, and C. Park, "S-boxes with controllable Nonlinearity,"
Proc. of EUROCRYPT 1999, LNCS 1592, pp. 286-294, 1999.