International Journal of Computational Intelligence and Information Security, V ol. 1 No. 5, July 2010 106 Improving Security and Reducing Computation Time using the ECDSA and PHAL Ranjeet Osari 1 , Prof. Bhola Nath Roy 2 CSE Department, M aulana A zad National I nstitute of Technology ,Bhopal (M .P.) 1,2 ranjeet.osari@gmail.com 1 bhola_mact@rediff mail.com 2 Abstract The internet has been spread in all areas for the information transmitting and accessing for widely uses, The organizations i ncrease their conf i dence on, possi bly circulated, i nf ormation systems f or dai ly business, they become more vulnerabl e to security breaches even as they gai n productivi ty and ef fi ci ency advantages. i t becomes bi g i ssues that how to protect the confidential data or information while transmitting and receiving. The security is based on the reliability, functionality and accuracy of the system. Most of the securi ty system are using the RSA digi tal signature f or the authenti cati on and many encryption decryption methods for secret sharing the data or information on the internet. In this paper the advance technology ECDSA and PHAL used for the hi gher security system to protect the data from the unauthorized users and reduce the computati on ti me. Keywords: RSA , Hash f uncti on, ECDSA, PHAL , Di gi tal Ti me Stampi ng.