scholarly journals A REVIEW - CAPTCHA AS GRAPHICAL PASSWORDS—A NEW SECURITY PRIMITIVE BASED ON HARD AI PROBLEMS

2016 ◽  
Vol 2 (4) ◽  
Author(s):  
PANKAJ ,
Keyword(s):  
Computer Science ◽  
Graphical Passwords ◽  
Shoulder Surfing ◽  
On Line

Most of the safety primeval square measure supported mathematical issues. This analysis goals to check existing parole and to style a brand new improved graphical parole pattern. Captcha as a graphical parole. during this paper, we tend to discuss a brand new security primeval supported exhausting computer science issues, a innovative of graphical parole systems created on dominant of Captcha technology, what we are saying Captcha as graphical passwords (CaRP). CaRP is each a Captcha and a graphical parole pattern. With the mix of CAPTCHA and graphical parole  addresses a like on-line estimation attacks, relay attacks, combination of with dual-view technology, and shoulder-surfing attacks. If the parole is in search nominative then CaRP parole are often found solely risk by automatic on-line estimation attack.

scholarly journals LocPass: A Graphical Password Method to Prevent Shoulder-Surfing

Symmetry ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1252
Author(s):  
Lip Yee Por ◽  
Lateef Adekunle Adebimpe ◽  
Mohd Yamani Idna Idris ◽  
Chee Siong Khaw ◽  
Chin Soon Ku
Keyword(s):  
Computer Security ◽  
Computer Science ◽  
User Study ◽  
Video Recording ◽  
Sufficient Time ◽  
Important Data ◽  
Graphical Passwords ◽  
Multiple Observations ◽  
Shoulder Surfing ◽  
New Knowledge

Graphical passwords are a method of authentication in computer security. Computer security is one of the disciplines of computer science. Shoulder-surfing attacks are a well-known threat to graphical passwords, although is getting commonly used especially in granting access for a secure system. Shoulder-surfing occurs when attackers skillfully capture important data/activities, such as login passwords, via direct observation or video recording methods. Many methods have been proposed to overcome the problem of shoulder-surfing attacks. After we reviewed some related works, we found out that most of the existing methods are still vulnerable to multiple observations and video-recorded shoulder-surfing attacks. Thus, we propose a new method to combat this problem. In our proposed method, we make used of two concepts to combat shoulder-surfing attacks. In the first concept, we used registered locations (something that only the users know) and 5 image directions (something that the users can see) to determine a pass-location (new knowledge). Secondly, the images used in our proposed method have higher chances to offset each other. The idea of offset could increase the password spaces of our proposed method if an attacker intended to guess the registered location used. By combining these two concepts, the pass-location produced by our proposed method in each challenge set could be varied. Therefore, it is impossible for the attackers to shoulder-surf any useful information such as the images/locations clicked by the user in each challenge set. A user study was conducted to evaluate the capabilities of the proposed method to prevent shoulder-surfing attacks. The shoulder-surfing testing results indicated that none of the participants were able to login, although they knew the underlying algorithm and they have been given sufficient time to perform a shoulder-surfing attack. Therefore, the proposed method has proven it can prevent shoulder-surfing attacks, provided the enrolment procedure is carried out in a secure manner.

Proposal for an on-line computer science courseware review

1996 ◽  
Vol 28 (SI) ◽  
pp. 230
Author(s):  
Michael Goldweber
Keyword(s):  
Computer Science ◽  
On Line

scholarly journals ФОРМУВАННЯ ГРАФІЧНОЇ КОМПЕТЕНТНОСТІ БАКАЛАВРІВ КОМП'ЮТЕРНИХ НАУК У ПРОЦЕСІ НАВЧАННЯ ПРОТОТИПУВАННЯ ПРОГРАМНИХ ІНТЕРФЕЙСІВ

2018 ◽  
Vol 67 (5) ◽  
pp. 104
Author(s):  
Kateryna P. Osadcha ◽  
Hanna Yu. Chemerys
Keyword(s):  
Comparative Analysis ◽  
Software Development ◽  
Computer Science ◽  
Theoretical Knowledge ◽  
High Fidelity ◽  
Computer Design ◽  
The Future ◽  
On Line ◽  
Project Participants ◽  
Basic Characteristics

The article deals with some aspects of the process of forming the future computer science bachelor's graphic competency at the stage of user's interface prototyping in the course of software development. The modern situation has been studied and the urgency of the stage of user's interface prototyping as a mediator in the man-machine coordination during the process of software development is proved. The Conceptual set in the sphere of prototyping is examined, namely — the concepts of wireframe, prototype and mockup. The factors of projects successfulness, the problems in the coordination of the project participants and the methods of their overcoming are being considered. The comparison of the essence and the analysis and the main methods of prototyping and correlating their value during the software development are given. The comparative analysis of the software and on-line resources for prototyping according to the detalization degree and taking into account the basic characteristics of a means, types and stages of prototyping, portability and using the means is carried out. The necessary base of knowledge, skills and knacks, forming during the study of such disciplines as “Computer Graphics” and “The Essential of Computer Design”, as well as essentials of composition, colour theory, ergonomics and typography is determined. The necessity of both the student's mastering an amount of theoretical knowledge and its successful using in his practical activity is stressed. The results of the research can be a substratum for improving the content of the educational and methodical complex in the discipline “Software Projecting” for computer science bachelors by means of introducing the teaching of prototyping from the low-fidelity to high fidelity detalization. The influence of user's interface prototyping on the formation of the future computer science bachelor's professional qualities is determined.

scholarly journals A shoulder surfing resistance using graphical authentication system

2018 ◽  
Vol 7 (1.7) ◽  
pp. 169
Author(s):  
Rupavathy N ◽  
Carmel Mary Belinda M. J ◽  
Nivedhitha G
Keyword(s):  
Mobile Apps ◽  
Security And Privacy ◽  
Experimental Result ◽  
Internet Applications ◽  
Multiple Camera ◽  
Graphical Passwords ◽  
Weakest Link ◽  
Shoulder Surfing ◽  
Authentication System ◽  
Vertical Bars

Authentication supported passwords is employed mostly in applications for laptop security and privacy. However, human actions like selecting unhealthy passwords and inputting passwords in an insecure approach are considered “the weakest link” within the authentication chain. Instead of impulsive alphanumerical strings, users tend to decide on passwords either short or purposeful for simple learning. With internet applications and mobile apps piling up, individuals will access these applications any time and any place with  numerous devices. This evolution brings nice convenience however additionally will increase the chance of exposing passwords to shoulder surfing attacks. Attackers will observe directly or use external recording devices to gather users’ credentials. To overcome this drawback, we tend to plan a unique authentication system Pass Matrix, supported graphical passwords to resist shoulder surfing attacks. With a one-time valid login indicator and circulatory horizontal and vertical bars covering the  complete scope of pass-images, Pass Matrix offers no hint for attackers to work out or slim down the password even they conduct multiple camera-based attacks. We tend to additionally enforce a Pass Matrix image on android and applied real user experiments to judge   its memorability and usefulness. From the experimental result, the proposed system achieves higher resistance shoulder surfing attacks whereas maintaining usability.

scholarly journals A Fractal-Based Authentication Technique Using Sierpinski Triangles in Smart Devices

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 678 ◽  
Author(s):  
Adnan Ali ◽  
Hamaad Rafique ◽  
Talha Arshad ◽  
Mohammed A. Alqarni ◽  
Sajjad Hussain Chauhdary ◽  
...  
Keyword(s):  
Smart Devices ◽  
Brute Force ◽  
Potential Threat ◽  
Graphical Passwords ◽  
Sierpinski Triangle ◽  
Authentication Mechanism ◽  
Shoulder Surfing ◽  
Physical Resources ◽  
Common Technique ◽  
Authentication Technique

The prevalence of smart devices in our day-to-day activities increases the potential threat to our secret information. To counter these threats like unauthorized access and misuse of phones, only authorized users should be able to access the device. Authentication mechanism provide a secure way to safeguard the physical resources as well the information that is processed. Text-based passwords are the most common technique used for the authentication of devices, however, they are vulnerable to a certain type of attacks such as brute force, smudge and shoulder surfing attacks. Graphical Passwords (GPs) were introduced as an alternative for the conventional text-based authentication to overcome the potential threats. GPs use pictures and have been implemented in smart devices and workstations. Psychological studies reveal that humans can recognize images much easier and quicker than numeric and alphanumeric passwords, which become the basis for creating GPs. In this paper a novel Fractal-Based Authentication Technique (FBAT) has been proposed by implementing a Sierpinski triangle. In the FBAT scheme, the probability of password guessing is low making system resilient against abovementioned threats. Increasing fractal level makes the system stronger and provides security against attacks like shoulder surfing.

scholarly journals A Comparison of On-Line Computer Science Citation Databases

2005 ◽  
pp. 438-449 ◽  
Author(s):  
Vaclav Petricek ◽  
Ingemar J. Cox ◽  
Hui Han ◽  
Isaac G. Councill ◽  
C. Lee Giles
Keyword(s):  
Computer Science ◽  
Science Citation ◽  
On Line ◽  
Citation Databases

scholarly journals Polynomial-Based Google Map Graphical Password System against Shoulder-Surfing Attacks in Cloud Environment

Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Zhili Zhou ◽  
Ching-Nung Yang ◽  
Yimin Yang ◽  
Xingming Sun
Keyword(s):  
Human Brain ◽  
Identity Authentication ◽  
Long Term Memory ◽  
Cloud Environment ◽  
Term Memory ◽  
Specific Location ◽  
Graphical Password ◽  
Graphical Passwords ◽  
Shoulder Surfing

Text password systems are commonly used for identity authentication to access different kinds of data resources or services in cloud environment. However, in the text password systems, the main issue is that it is very hard for users to remember long random alphanumeric strings due to the long-term memory limitation of the human brain. To address this issue, graphical passwords are accordingly proposed based on the fact that humans have better memory for images than alphanumeric strings. Recently, a Google map graphical password (GMGP) system is proposed, in which a specific location of Google Map is preset as a password for authentication. Unfortunately, the use of graphical passwords increases the risk of exposing passwords under shoulder-surfing attacks. A snooper can easily look over someone’s shoulder to get the information of a location on map than a text password from a distance, and thus the shoulder-surfing attacks are more serious for graphical passwords than for text passwords. To overcome this issue, we design a polynomial-based Google map graphical password (P-GMGP) system. The proposed P-GMGP system can not only resist the shoulder-surfing attacks effectively, but also need much fewer challenge-response rounds than the GMGP system for authentication. Moreover, the P-GMGP system is extended to allow a user to be authenticated in cloud environment effectively and efficiently.

Sign in / Sign up

Export Citation Format

Share Document