Chan Kil Park , Jung Jae Kim , Kyung Seok Lee , Moon Seog Jun

The KIPS Transactions:PartC, Vol. 13, No. 7, pp. 843-850, Dec. 2006
10.3745/KIPSTC.2006.13.7.843,   PDF Download:

Abstract

This is devoted to first, to propose a hash chain algorithm that generates more secure key than conventional encryption method. Secondly, we proposes encryption method that is more secure than conventional system using a encryption method that encrypts each block with each key generated by a hash chain algorithm. Thirdly, After identifying the user via wired and wireless network using a user authentication method. We propose a divided session key method so that Although a client key is disclosed, Attackers cannot catch a complete key and method to safely transfer the key using a divided key method. We make an experiment using various size of digital contents files for performance analysis after performing the design and implementation of system. Proposed system can distribute key securely than conventional system, and encrypt data to prevent attacker from decrypting complete data although key may be disclosed. The encryption and decryption time that client system takes to replay video data file is analogous to the conventional method.

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