Partitions of bipartite numbers. - Jun Kyo Kim; Sang Geun Hahn (Graphs Comb., 1997)

A new upper bound for binary codes with minimum distance four. - Jun Kyo Kim; Sang Geun Hahn (Discret. Math., 1998)

A Syndrome-Distribution Decoding of Mols Lp Codes. - Dong Geon Kim; Sang Geun Hahn; Yong Soo Kim (Ars Comb., 2000)

Pseudorandomness from Braid Groups. - Eonkyung Lee; Sangjin Lee; Sang Geun Hahn (CRYPTO, 2001)

Fast Elliptic Curve Point Counting Using Gaussian Normal Basis. - Hae Young Kim; Jung Youl Park; Jung Hee Cheon; Je Hong Park; Jae Heon Kim; Sang Geun Hahn (ANTS, 2002)

Complexity of the generalized conjugacy problem. - Sang Geun Hahn; Eonkyung Lee; Je Hong Park (Discret. Appl. Math., 2003)

A Certificate-Based Signature Scheme. - Bo Gyeong Kang; Je Hong Park; Sang Geun Hahn (CT-RSA, 2004)

A New Forward Secure Signature Scheme. - Bo Gyeong Kang; Je Hong Park; Sang Geun Hahn (IACR Cryptol. ePrint Arch., 2004)

On the weight and nonlinearity of homogeneous rotation symmetric Boolean functions of degree 2. - Hyeonjin Kim; Sung-Mo Park; Sang Geun Hahn (Discret. Appl. Math., 2009)

On the bit security of the weak Diffie-Hellman problem. - Dongyoung Roh; Sang Geun Hahn (Inf. Process. Lett., 2010)

Cryptanalysis of the GGH Cryptosystem. - Moon Sung Lee; Sang Geun Hahn (Math. Comput. Sci., 2010)

The square root Diffie-Hellman problem. - Dongyoung Roh; Sang Geun Hahn (Des. Codes Cryptogr., 2012)

Analysis of Error Terms of Signatures Based on Learning with Errors. - Jeongsu Kim; Suyong Park; Seonggeun Kim; Busik Jang; Sang Geun Hahn; Sangim Jung; Dongyoung Roh (ICISC, 2016)

The l-th power Diffie-Hellman problem and the l-th root Diffie-Hellman problem. - Dongyoung Roh; I-Yeol Kim; Sang Geun Hahn (Appl. Algebra Eng. Commun. Comput., 2018)

Three Hierarchical Levels of Big-Data Market Model Over Multiple Data Sources for Internet of Things. - Busik Jang; Sangdon Park; Joohyung Lee 001; Sang Geun Hahn (IEEE Access, 2018)

Mining Pool Manipulation in Blockchain Network Over Evolutionary Block Withholding Attack. - Seonggeun Kim; Sang Geun Hahn (IEEE Access, 2019)

State of the Art of Anti-Screen Capture Protection Techniques. - Young Lee; Sang Geun Hahn (KSII Trans. Internet Inf. Syst., 2021)