Cryptanalysis and Improvement of Das et al.'s Proxy Signature Scheme. - Debasis Giri; Parmeshwary Dayal Srivastava (ICIT, 2007)

Cryptanalysis and the Improvement of Kim et al.'s Password Authentication Schemes. - Debasis Giri; Parmeshwary Dayal Srivastava (ICISS, 2007)

An Asymmetric Cryptographic Key Assignment Scheme for Access Control in Tree Structural Hierarchies. - Debasis Giri; Parmeshwary Dayal Srivastava (Int. J. Netw. Secur., 2007)

Cryptanalysis and Improvement of a Remote User Authentication Scheme using Smart Cards. - Debasis Giri; Parmeshwary Dayal Srivastava (ISECS, 2008)