International Journal of Computer Applications
All e-commerce environments require support for security properties such as authentication, authorization, data confidentiality, and non -repudiation. The most common method of authentication or protection against intrusion in a computer system is to use alphanumeric usernames and password. Choosing a strong password and protecting the chosen password has always been a popular topic among security researchers. Studies reveal that users today have on an average approximately 15 passwords - protected accounts. One password may be easy to remember, but handling many passwords is time-consuming task and a security hazard.