Semantically Secure Authenticated Encryption Scheme and the Same Scheme for Ad-hoc Group Called a Ring. - Ji-Seon Lee; Jik Hyun Chang (ITNG, 2007)

Generating a Proxy Signature on a Confidential Message. - Ji-Seon Lee; Jik Hyun Chang (ITNG, 2007)

Comment on Saeednia et al.'s strong designated verifier signature scheme. - Ji-Seon Lee; Jik Hyun Chang (Comput. Stand. Interfaces, 2009)

Security flaw of authentication scheme with anonymity for wireless communications. - Ji-Seon Lee; Jik Hyun Chang; Dong Hoon Lee 001 (IEEE Commun. Lett., 2009)

Forgery attacks on Kang et al.'s identity-based strong designated verifier signature scheme and its improvement with security proof. - Ji-Seon Lee; Jik Hyun Chang; Dong Hoon Lee 001 (Comput. Electr. Eng., 2010)