Title	Strong Designated Verifier Proof Signature without Hash Functions and the Same Scheme for an Ad-hoc Group Ring
Author	Ji-Seon Lee, Jik Hyun Chang
Citation	Vol. 6  No. 12  pp. 205-210
Keywords	Designated Verifier Proof, Ad-hoc Group, Ring Signature

Title	New One-Time Proxy Signature Scheme based on DLP using the Warrant
Author	Young-Seol Kim, Jik Hyun Chang
Citation	Vol. 7  No. 2  pp. 215-220
Keywords	Digital signature, Proxy signature, One-Time Signature, Public key cryptography

Title	Self Proxy Signature Scheme
Author	Young-Seol Kim, Jik Hyun Chang
Citation	Vol. 7  No. 2  pp. 335-338
Keywords	Digital signature, Proxy signature, Public key cryptography