captcha as graphical passwords—a new security primitive based on hard ai problems

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Captcha as Graphical Passwords—A New Security Primitive Based on Hard AI Problems
Captcha as Graphical Passwords—A New Security Primitive Based
on Hard AI Problems
Many security primitives are based on hard mathematical problems. Using hard AI problems for
security is emerging as an exciting new paradigm, but has been under-explored. In this paper, we
present a new security primitive based on hard AI problems, namely, a novel family of graphical
password systems built on top of Captcha technology, which we call Captcha as graphical
passwords (CaRP). CaRP is both a Captcha and a graphical password scheme. CaRP addresses a
number of security problems altogether, such as online guessing attacks, relay attacks, and, if
combined with dual- view technologies, shoulder-surfing attacks. Notably, a CaRP password can
be found only probabilistically by automatic online guessing attacks even if the password is in
the search set. CaRP also offers a novel approach to address the well-known image hotspot
problem in popular graphical password systems, such as PassPoints, that often leads to weak
password choices. CaRP is not a panacea, but it offers reasonable security and usability and
appears to fit well with some practical applications for improving online security.
 The most notable primitive invented is Captcha, which distinguishes human users from
computers by presenting a challenge, i.e., a puzzle, beyond the capability of computers
but easy for humans. Captcha is now a standard Internet security technique to protect
online email and other services from being abused by bots.
DISADVANTAGES OF EXISTING SYSTEM:
 This existing paradigm has achieved just a limited success as compared with the
cryptographic primitives based on hard math problems and their wide applications.
Contact: 9703109334, 9533694296
ABSTRACT:
EXISTING SYSTEM:
PROPOSED SYSTEM:
Email id: academicliveprojects@gmail.com, www.logicsystems.org.in

Captcha as Graphical Passwords—A New Security Primitive Based on Hard AI Problems
 In this paper, we present a new security primitive based on hard AI problems, namely, a
novel family of graphical password systems built on top of Captcha technology, which
we call Captcha as graphical passwords (CaRP).
 CaRP is both a Captcha and a graphical password scheme. CaRP addresses a number of
security problems altogether, such as online guessing attacks, relay attacks, and, if
combined with dual-view technologies, shoulder-surfing attacks.
ADVANTAGES OF PROPOSED SYSTEM:
 CaRP offers protection against online dictionary attacks on passwords, which have been
for long time a major security threat for various online services.
 CaRP also offers protection against relay attacks, an increasing threat to bypass Captchas
SYSTEM REQUIREMENTS:
HARDWARE REQUIREMENTS:
 System : Pentium IV 2.4 GHz.
 Hard Disk : 40 GB.
 Floppy Drive : 1.44 Mb.
 Monitor : 15 VGA Colour.
 Mouse : Logitech.
 Ram : 512 Mb.
SOFTWARE REQUIREMENTS:
 Operating system : Windows XP/7.
 Coding Language : JAVA/J2EE
 IDE : Netbeans 7.4
 Database : MYSQL
Contact: 9703109334, 9533694296
protection.
REFERENCE:
Email id: academicliveprojects@gmail.com, www.logicsystems.org.in

Captcha as Graphical Passwords—A New Security Primitive Based on Hard AI Problems
Bin B. Zhu, Jeff Yan, Guanbo Bao, Maowei Yang, and N ing Xu ,“Captcha as Graphical
Passwords—A New Security Primitive Based on Hard AI Problems”, VOL. 9, NO. 6, JUNE
2014.
Contact: 9703109334, 9533694296
Email id: academicliveprojects@gmail.com, www.logicsystems.org.in

This document proposes a new security system called Captcha as Graphical Passwords (CaRP) that combines captcha technology with graphical passwords. CaRP aims to address security issues like online guessing attacks, relay attacks, and shoulder surfing. It leverages hard AI problems to make passwords difficult for computers to guess automatically, while still being usable for humans. The system would use captcha-like puzzles as passwords that are hard for AI but easy for people. This approach could help protect against dictionary attacks and relay attacks on online services.

captcha and graphical

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This document proposes a new security system called Captcha as Graphical Passwords (CaRP) that combines captcha and graphical passwords to address online security issues. CaRP uses hard AI problems from captcha tests to create password entry challenges that are difficult for computers to solve but easy for humans. This allows CaRP to protect against online guessing attacks and relay attacks on passwords. The system offers reasonable security and usability to improve online security for applications.

Captcha as graphical passwords a new security primitive based on hard ai prob...

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The document proposes a new security primitive called Captcha as Graphical Passwords (CaRP) that uses hard AI problems from Captcha technology to create a novel graphical password system. CaRP aims to address security issues like online guessing attacks, relay attacks, and shoulder surfing. It can probabilistically thwart automated online guessing even if the password is in the search set. CaRP also aims to solve the "image hotspot" problem in other graphical password systems. The document outlines examples of how CaRP could work and argues that it offers reasonable security and usability for improving online security.

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Abstract: Using hard AI problems for security is emerging as an exciting new paradigm, but has been underexplored. This approach present a new security primitive based on hard AI problems, namely, a novel family of graphical password systems built on top of Captcha technology, which is called Captcha as graphical passwords (CaRP). CaRP is both a Captcha and a graphical password scheme. CaRP addresses a number of security problems altogether, such as online guessing attacks, relay attacks, and, if combined with dual-view technologies, shoulder-surfing attacks. Notably, a CaRP password can be found only probabilistically by automatic online guessing attacks even if the password is in the search set.

Captcha as graphical password

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This research aims to study the existing password scheme and to design and develop a new improved graphical password scheme. A novel protection primitive is presented in view of strong AI problems namely a new family of graphical password scheme built up on top of captcha technology, which we call Captcha as graphical password (CaRP). CaRP is both a captcha and graphical password scheme. CaRP addresses number of security issues altogether for example, online guessing attacks, relay attacks and if combined with dual -view technologies shoulder-surfing attacks. CaRP likewise offers a novel way to deal with address the notable image hotspot problem in well-known

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This document summarizes research on CAPTCHAs and graphical passwords. It discusses how CAPTCHAs are used to distinguish humans from bots but have usability issues. Graphical passwords were developed as an alternative but are vulnerable to attacks. The document reviews several techniques for CAPTCHAs and graphical passwords, including CaRP which uses images as passwords and is resistant to guessing attacks. It analyzes the security and usability of different schemes and automated attack methods against PassPoints passwords. In conclusion, image-based CAPTCHAs can reduce spam while advancing AI, and new forms may be more robust against attacks.

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