05-06-2012, 11:01 AM
Authentication Schemes for Session Passwords using Color and Images
Passwords using Color and Images.doc (Size: 33.5 KB / Downloads: 42)
ABSTRACT
Textual passwords are the most common method used for authentication. But textual passwords are vulnerable to eves dropping, dictionary attacks, social engineering and shoulder surfing. Graphical passwords are introduced as alternative techniques to textual passwords. Most of the graphical schemes are vulnerable to shoulder surfing. To address this problem, text can be combined with images or colors to generate session passwords for authentication. Session passwords can be used only once and every time a new password is generated. In this paper, two techniques are proposed to generate session passwords using text and colors which are resistant to shoulder surfing. These methods are suitable for Personal Digital Assistants.
EXISTING SYSTEM:
The existing system to use passwords can be easily guessed or cracked. The alternative techniques are graphical passwords and biometrics. But these two techniques have their own disadvantages. Biometrics, such as finger prints, iris scan or facial recognition have been introduced but not yet widely adopted.
Disadvantage:
1. The systems can be expensive.
2. The identification process can be slow.
PROPOSED SYSTEM:
The proposed system using new Authentication technique consists of 3 phases: registration phase, login phase and verification phase. During registration, user enters his password in first method or rates the colors in the second method. During login phase, the user has to enter the password based on the interface displayed on the screen. The system verifies the password entered by comparing with content of the password generated during registration.
Advantage:
1. The Session passwords are passwords that are used only once
2. The users input different passwords.
3. The session passwords provide better security against dictionary and brute force attacks as password changes for every session.
