A user authenticaion scheme using multiple passphrases and its arrangement

In recent years, one of the most widely used authentication methods is a password-based authentication method. When using the password-based authentication method, users are required to create a secure password according to various requirements such that the password is long enough, or it does not contain dictionary words nor user´s personal information. As a result, it is difficult for users to create memorable passwords. To resolve the problem, we propose a new password based authentication scheme using multiple passphrases and its arrangement information. By experiment, we show our proposed scheme attains good usability and memorability. We also show it is invulnerable against shoulder surfing, dictionary attack and brute-force attack.