The document proposes two outsourced attribute-based signature (OABS) schemes that reduce the computational overhead of signing for resource-limited users by outsourcing intensive computations to a cloud service provider. The first scheme reduces the number of exponentiations in signing from linear to constant time, while the second builds on an existing construction to reduce exponentiations from quadratic to linear time. Both schemes are proven secure while allowing for outsourced verification through the introduction of an additional verifying-cloud service provider entity under the assumption they do not collude with the signing-cloud provider.
Final Year Projects Computer Science (Information security) -2015Syed Ubaid Ali Jafri
Final Year Project Ideas for Computer Science Students, These Projects helps students to enhance their Expertise in the area of Information Security + they would be able to understand the concept of Information Security
Graphical Password Authentication using image Segmentation for Web Based Appl...ijtsrd
One of the most important topics in information security today is user authentication. User authentication is a fundamental component in most computer security contexts. It provides the basis for access control and user accountability. While there are various types of user authentication systems, alphanumeric passwords are the most common type of user authentication. They are versatile and easy to implement and use. However, it can either be long and secure or short and hard to remember. A graphical based password is one promising alternatives of textual passwords. According to human psychology, humans are able to remember pictures easily. In this paper, graphical passwords have been designed to try to make password more memorable and easier for people to use, and it is less vulnerable to brute force attacks than a text based password. The aim of the system is to implement a strong security. The proposed system segments the image like a grid, which has a maximum four fragments. Then, each segment of the image is dragged in a particular sequence onto an empty grid of size 6x6 and placed on a particular segment of the empty grid, to form the user' password. When the user logs into the system, the user needs to drag each segment of the image onto the same empty grid of size 6x6 in the correct sequence and position of the segments that user had specified during registration. Maw Maw Naing | Ohnmar Win ""Graphical Password Authentication using image Segmentation for Web Based Applications"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd25184.pdf
Paper URL: https://www.ijtsrd.com/engineering/electronics-and-communication-engineering/25184/graphical-password-authentication-using-image-segmentation-for-web-based-applications/maw-maw-naing
ABSTRACT
Authentication based on passwords is used largely in applications for computer security and privacy. However, human actions such as choosing bad passwords and inputting passwords in an insecure way are regarded as ”the weakest link” in the authentication chain. Rather than arbitrary alphanumeric strings, users tend to choose passwords either short or meaningful for easy memorization. With web applications and mobile apps piling up, people can access these applications anytime and anywhere with various devices. This evolution brings great convenience but also increases the probability of exposing passwords to shoulder surfing attacks. Attackers can observe directly or use external recording devices to collect users’ credentials. To overcome this problem, we proposed a novel authentication system PassMatrix, based on graphical passwords to resist shoulder surfing attacks. With a one-time valid login indicator and circulative horizontal and vertical bars covering the entire scope of pass-images, PassMatrix offers no hint for attackers to figure out or narrow down the password even they conduct multiple camera-based attacks. We also implemented a PassMatrix prototype on Android and carried out real user experiments to evaluate its memorability and usability. From the experimental result, the proposed system achieves better resistance to shoulder surfing attacks while maintaining usability.
Keywords:- Graphical Passwords, Authentication, Shoulder Surfing Attack.
Authentication plays a major role in Digital environment. In this environment we have different methods which generally use alphanumeric characters and special characters for password creation. These methods have some problems like hard to remember password because it has no meaning and easily breakable by third parties or attackers. To address these issues, many techniques for authentication are proposed from which graphical password method is best in terms of cost and usage. Basically, Graphical passwords use images for password creation and it has some demerits like hotspot and shoulder surfing problem. A persuasive cued click-point based method reduces hotspot problem. To prevent persuasive cued click-point based method from shoulder surfing we include one time password. For more user convenience we provide two login
methods one which requires internet and other which does not
require internet.
A Generalized Image Authentication Based On Statistical Moments of Color Hist...idescitation
Designing low cost and high speed authentication
solution for digital images is always an attractive area of
research in image processing. In past few years because of
widespread use of internet and network technology, concept
of information distribution has been become habit rather than
exception in daily life. In same aspects challenges involved
with distribution of authenticate information has been
increased manifolds. In this paper a generalize image
authentication method has proposed by hybridization of color
histogram and associated first four statistical moments to
achieve the objectives of low cost and high speed. Proposed
method can apply for both gray and color images having any
size and any format. Solution generates a very small
authentication code with an ease means which is use to analyze
the characteristics of received image from tampering
perspective.
ANDROID BASED WS SECURITY AND MVC BASED UI REPRESENTATION OF DATAIJCSEIT Journal
Google’s Android is open source; Programmable software framework is subject to typical Smartphone
attacks. Such attacks can make the phone partially or fully unusable, cause unwanted changes. While
accessing data over web services there should be security mechanisms like encryption of data on server
side and decryption using key on client side so that attacks can cause minimal damage to device and data
integrity
In the second part we have tried to implement here is that representation of data in UI in MVC architecture
so that data can be separated from the representation details and user can view data in a manner
whichever gives him/her comfort in analyzing the data.
Improvement of a PIN-Entry Method Resilient to ShoulderSurfing and Recording ...IJRTEMJOURNAL
The scope of this work extends to system components (for example service providers, networks,
servers, hosts, applications, processes and personnel) which are used to exchange PIN-related data. The PIN
Guidelines in this document encompass PIN security within any one system or sub-system and between systems.
This process designs 10 digit keypad with random RGB color SCHEME using a Fast Finite-State Algorithm for
Generating RGB Palettes of Color. In this work, we propose a color finite-state LBG (CFSLBG) algorithm that
reduces the computation time by exploiting the correlations of palette entries between the current and previous
iterations.
Efficient and Secure Single Sign on Mechanism for Distributed NetworkIJERA Editor
Distributed network act as core part to access the various services which are available in the network. But the security related to distributed network is main concern. In this paper single sign-on SSO mechanism is introduced which gives access to all services by allowing to sign on only once by users. In this mechanism once user logs in to the Trusted Authority Center TAC then application or services which are register to trusted center will automatically verifies the user’s credentials details and these credentials like password or digital signature will be only one for all applications or services. Unlike all other previous mechanisms where in, if user wants to have access multiple services then for every service distinct user credentials (username, password) must be required. SSO act as single authentication window to user for admittance multiple service providers in networks. Previously introduced technique based SSO technology proved to be secure over well-designed SSO system, but fails to provide security during communication. So here emphasis is given on authentication as open problem and on to refining the already proposed SSO process. And to do this along with RSA algorithm which was used in previous SSO process, we will be using MAC algorithm, which is intended to provide secured pathway for communication over distributed network.TAC i.e. Trusted Authority Center is used for sending token integrated with private and shared public key to user.
Network as a Service Model in Cloud Authentication by HMAC AlgorithmEswar Publications
Resource pooling on internet-based accessing on use as pay environmental technology and ruled in IT field is the
cloud. Present, in every organization has trusted the web, however, the information must flow but not hold the
data. Therefore, all customers have to use the cloud. While the cloud progressing info by securing-protocols. Third
party observing and certain circumstances directly stale in flow and kept of packets in the virtual private cloud.
Global security statistics in the year 2017, hacking sensitive information in cloud approximately maybe 75.35%,
and the world security analyzer said this calculation maybe reached to 100%. For this cause, this proposed
research work concentrates on Authentication-Message-Digest-Key with authentication in routing the Network as
a Service of packets in OSPF (Open Shortest Path First) implementing Cloud with GNS3 has tested them to
securing from attackers.
Cryptanalysis and Security Enhancement of a Khan et al.'s Schemeiosrjce
IOSR Journal of Computer Engineering (IOSR-JCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of computer engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in computer technology. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
Final Year Projects Computer Science (Information security) -2015Syed Ubaid Ali Jafri
Final Year Project Ideas for Computer Science Students, These Projects helps students to enhance their Expertise in the area of Information Security + they would be able to understand the concept of Information Security
Graphical Password Authentication using image Segmentation for Web Based Appl...ijtsrd
One of the most important topics in information security today is user authentication. User authentication is a fundamental component in most computer security contexts. It provides the basis for access control and user accountability. While there are various types of user authentication systems, alphanumeric passwords are the most common type of user authentication. They are versatile and easy to implement and use. However, it can either be long and secure or short and hard to remember. A graphical based password is one promising alternatives of textual passwords. According to human psychology, humans are able to remember pictures easily. In this paper, graphical passwords have been designed to try to make password more memorable and easier for people to use, and it is less vulnerable to brute force attacks than a text based password. The aim of the system is to implement a strong security. The proposed system segments the image like a grid, which has a maximum four fragments. Then, each segment of the image is dragged in a particular sequence onto an empty grid of size 6x6 and placed on a particular segment of the empty grid, to form the user' password. When the user logs into the system, the user needs to drag each segment of the image onto the same empty grid of size 6x6 in the correct sequence and position of the segments that user had specified during registration. Maw Maw Naing | Ohnmar Win ""Graphical Password Authentication using image Segmentation for Web Based Applications"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd25184.pdf
Paper URL: https://www.ijtsrd.com/engineering/electronics-and-communication-engineering/25184/graphical-password-authentication-using-image-segmentation-for-web-based-applications/maw-maw-naing
ABSTRACT
Authentication based on passwords is used largely in applications for computer security and privacy. However, human actions such as choosing bad passwords and inputting passwords in an insecure way are regarded as ”the weakest link” in the authentication chain. Rather than arbitrary alphanumeric strings, users tend to choose passwords either short or meaningful for easy memorization. With web applications and mobile apps piling up, people can access these applications anytime and anywhere with various devices. This evolution brings great convenience but also increases the probability of exposing passwords to shoulder surfing attacks. Attackers can observe directly or use external recording devices to collect users’ credentials. To overcome this problem, we proposed a novel authentication system PassMatrix, based on graphical passwords to resist shoulder surfing attacks. With a one-time valid login indicator and circulative horizontal and vertical bars covering the entire scope of pass-images, PassMatrix offers no hint for attackers to figure out or narrow down the password even they conduct multiple camera-based attacks. We also implemented a PassMatrix prototype on Android and carried out real user experiments to evaluate its memorability and usability. From the experimental result, the proposed system achieves better resistance to shoulder surfing attacks while maintaining usability.
Keywords:- Graphical Passwords, Authentication, Shoulder Surfing Attack.
Authentication plays a major role in Digital environment. In this environment we have different methods which generally use alphanumeric characters and special characters for password creation. These methods have some problems like hard to remember password because it has no meaning and easily breakable by third parties or attackers. To address these issues, many techniques for authentication are proposed from which graphical password method is best in terms of cost and usage. Basically, Graphical passwords use images for password creation and it has some demerits like hotspot and shoulder surfing problem. A persuasive cued click-point based method reduces hotspot problem. To prevent persuasive cued click-point based method from shoulder surfing we include one time password. For more user convenience we provide two login
methods one which requires internet and other which does not
require internet.
A Generalized Image Authentication Based On Statistical Moments of Color Hist...idescitation
Designing low cost and high speed authentication
solution for digital images is always an attractive area of
research in image processing. In past few years because of
widespread use of internet and network technology, concept
of information distribution has been become habit rather than
exception in daily life. In same aspects challenges involved
with distribution of authenticate information has been
increased manifolds. In this paper a generalize image
authentication method has proposed by hybridization of color
histogram and associated first four statistical moments to
achieve the objectives of low cost and high speed. Proposed
method can apply for both gray and color images having any
size and any format. Solution generates a very small
authentication code with an ease means which is use to analyze
the characteristics of received image from tampering
perspective.
ANDROID BASED WS SECURITY AND MVC BASED UI REPRESENTATION OF DATAIJCSEIT Journal
Google’s Android is open source; Programmable software framework is subject to typical Smartphone
attacks. Such attacks can make the phone partially or fully unusable, cause unwanted changes. While
accessing data over web services there should be security mechanisms like encryption of data on server
side and decryption using key on client side so that attacks can cause minimal damage to device and data
integrity
In the second part we have tried to implement here is that representation of data in UI in MVC architecture
so that data can be separated from the representation details and user can view data in a manner
whichever gives him/her comfort in analyzing the data.
Improvement of a PIN-Entry Method Resilient to ShoulderSurfing and Recording ...IJRTEMJOURNAL
The scope of this work extends to system components (for example service providers, networks,
servers, hosts, applications, processes and personnel) which are used to exchange PIN-related data. The PIN
Guidelines in this document encompass PIN security within any one system or sub-system and between systems.
This process designs 10 digit keypad with random RGB color SCHEME using a Fast Finite-State Algorithm for
Generating RGB Palettes of Color. In this work, we propose a color finite-state LBG (CFSLBG) algorithm that
reduces the computation time by exploiting the correlations of palette entries between the current and previous
iterations.
Efficient and Secure Single Sign on Mechanism for Distributed NetworkIJERA Editor
Distributed network act as core part to access the various services which are available in the network. But the security related to distributed network is main concern. In this paper single sign-on SSO mechanism is introduced which gives access to all services by allowing to sign on only once by users. In this mechanism once user logs in to the Trusted Authority Center TAC then application or services which are register to trusted center will automatically verifies the user’s credentials details and these credentials like password or digital signature will be only one for all applications or services. Unlike all other previous mechanisms where in, if user wants to have access multiple services then for every service distinct user credentials (username, password) must be required. SSO act as single authentication window to user for admittance multiple service providers in networks. Previously introduced technique based SSO technology proved to be secure over well-designed SSO system, but fails to provide security during communication. So here emphasis is given on authentication as open problem and on to refining the already proposed SSO process. And to do this along with RSA algorithm which was used in previous SSO process, we will be using MAC algorithm, which is intended to provide secured pathway for communication over distributed network.TAC i.e. Trusted Authority Center is used for sending token integrated with private and shared public key to user.
Network as a Service Model in Cloud Authentication by HMAC AlgorithmEswar Publications
Resource pooling on internet-based accessing on use as pay environmental technology and ruled in IT field is the
cloud. Present, in every organization has trusted the web, however, the information must flow but not hold the
data. Therefore, all customers have to use the cloud. While the cloud progressing info by securing-protocols. Third
party observing and certain circumstances directly stale in flow and kept of packets in the virtual private cloud.
Global security statistics in the year 2017, hacking sensitive information in cloud approximately maybe 75.35%,
and the world security analyzer said this calculation maybe reached to 100%. For this cause, this proposed
research work concentrates on Authentication-Message-Digest-Key with authentication in routing the Network as
a Service of packets in OSPF (Open Shortest Path First) implementing Cloud with GNS3 has tested them to
securing from attackers.
Cryptanalysis and Security Enhancement of a Khan et al.'s Schemeiosrjce
IOSR Journal of Computer Engineering (IOSR-JCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of computer engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in computer technology. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
Key aggregate cryptosystem for scalable data sharing in cloud storage using pairng based cryptography. We used JPBC tool to implement Key Aggregate cryptosystem.
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
We are good IEEE java projects development center in Chennai and Pondicherry. We guided advanced java technologies projects of cloud computing, data mining, Secure Computing, Networking, Parallel & Distributed Systems, Mobile Computing and Service Computing (Web Service).
For More Details:
http://jpinfotech.org/final-year-ieee-projects/2014-ieee-projects/java-projects/
Project ideas for final year BE Computer Engineering/ IT students. BE project Ideas, Computer Engineering Project Ideas, Top 100 computer engineering project ideas, MTECH project ideas, btech project ideas, engineering students projects, ieee 2016 project ideas for computer engineering students.
Latest IEEE Projects on All Domains in Computer/ Electronics Engineering
____________________________________________
We develop projects for final year students in computer engineering. These are some topics which are feasible to implement.
For more topics please visit: www.ns2academy.in
Or call us on 9970186685/ 020 24394323
Or mail us: info@ns2academy.in
Adz91 is appointing dealers/ sub-dealers in various states/ districts/ talukas in overall India. Adz91 mobile app is popular application for free recharges. After watching ads users gets free recharge.
Efficient Instant-Fuzzy Search with Proximity Ranking
System finds answers to a query instantly while user types in keywords character-by-character.
Fuzzy search improves user search experiences by finding relevant answers with keywords similar to query keywords.
A main computational challenge in this paradigm is the high speed requirement
At the same time, we also need good ranking functions that consider the proximity of keywords to compute relevance scores
The previous systems were able to recommend results based on just previously typed characters kept in cache module.
Most of the times Previous Search Log might be useful to make recommendation system more faster!
Relevance to user query along with users intentions could be mined easily.
BE/ ME / MTech / BTech Computer Engineering Project titles IEEE 2014 IEEE 2015Adz91 Digital Ads Pvt Ltd
BE Computer Engineering Latest 2014 transactions on IEEE are available!!!
Visit www.ocularsystems.in for live chat with our experts!!!!
Get abstracts of project for free!!!!
Implementation is the stage of the project when the theoretical design is turned out into a working system. Thus it can be considered to be the most critical stage in achieving a successful new system and in giving the user, confidence that the new system will work and be effective.
The implementation stage involves careful planning, investigation of the existing system and it’s constraints on implementation, designing of methods to achieve changeover and evaluation of changeover methods.
Main Modules:-
1. User Module:
In this module, Users are having authentication and security to access the detail which is presented in the ontology system. Before accessing or searching the details user should have the account in that otherwise they should register first.
2. Secure DeDuplication System:
To support authorized deduplication, the tag of a file F will be determined by the file F and the privilege. To show the difference with traditional notation of
tag, we call it file token instead. To support authorized access, a secret key kp will be bounded with a privilege p to generate a file token. Let ϕ′ F;p = TagGen(F, kp) denote the token of F that is only allowed to access by user with privilege p. In another word, the token ϕ′ F;p could only be computed by the users with privilege p. As a result, if a file has been uploaded by a user with a duplicate token ϕ′
F;p, then a duplicate check sent from another user will be successful if and only if he also has the file F and privilege p. Such a token generation function could be
easily implemented as H(F, kp), where H(_) denotes a cryptographic hash function.
3. Security Of Duplicate Check Token :
We consider several types of privacy we need protect, that is, i) unforgeability of duplicate-check token: There are two types of adversaries, that is, external adversary and internal adversary. As shown below, the external adversary
can be viewed as an internal adversary without any privilege. If a user has privilege p, it requires that the adversary cannot forge and output a valid duplicate token with any other privilege p′ on any file F, where p does not match p′. Furthermore, it also requires that if the adversary does not make a request of token with its own privilege from private cloud server, it cannot forge and output a valid duplicate token with p on any F that has been queried.
4. Send Key:
Once the key request was received, the sender can send the key or he can decline it. With this key and request id which was generated at the time of sending key request the receiver can decrypt the message.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
Delivering Micro-Credentials in Technical and Vocational Education and TrainingAG2 Design
Explore how micro-credentials are transforming Technical and Vocational Education and Training (TVET) with this comprehensive slide deck. Discover what micro-credentials are, their importance in TVET, the advantages they offer, and the insights from industry experts. Additionally, learn about the top software applications available for creating and managing micro-credentials. This presentation also includes valuable resources and a discussion on the future of these specialised certifications.
For more detailed information on delivering micro-credentials in TVET, visit this https://tvettrainer.com/delivering-micro-credentials-in-tvet/
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...NelTorrente
In this research, it concludes that while the readiness of teachers in Caloocan City to implement the MATATAG Curriculum is generally positive, targeted efforts in professional development, resource distribution, support networks, and comprehensive preparation can address the existing gaps and ensure successful curriculum implementation.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
Secure outsourced attribute based signatures
1. We develops Computer Engineering Projects for BE/ME students. For any kind of
support you may live chat with us at www.ocularsystems.in or call us on 020 30858066
or
Mail Us: info@ocularsystems.in
Our Address: Swagat Corner Building, Near Narayani Dham Temple, Katraj, Pune-46
(Maharashtra)
Secure Outsourced Attribute-Based Signatures
ABSTRACT
Attribute-based signature (ABS) is a useful variant of digital signature, which
enables users to sign messages over attributes without revealing any information
other than the fact that they have attested to the messages. However, heavy
computational cost is required during signing in existing work of ABS, which
grows linearly with the size of the predicate formula. As a result, this presents a
significant challenge for resource-limited users (such as mobile devices) to
perform such heavy computation independently. Aiming at tackling the
challenge above, we propose and formalize a new paradigm called OABS, in
which the computational overhead at user side is greatly reduced through
outsourcing such intensive computation to an un trusted signing-cloud service
provider (S-CSP). Furthermore, we apply this novel paradigm to existing ABS to
reduce complexity and present two schemes, i) in the first OABS scheme, the
number of exponentiations involving in signing is reduced from O(d) to O(1)
(nearly three), where d is the upper bound of threshold value defined in the
predicate; ii) our second scheme is built on Herranz et al's construction with
constant-size signatures. The number of exponentiations in signing is reduced
from O(d2) to O(d) and the communication overhead is O(1). Security analysis
demonstrates that both OABS schemes are secure in terms of the unforgeability
and attribute- signer privacy definitions specified in the proposed security
model. Finally, to allow for high efficiency and exibility, we discuss extensions of
2. We develops Computer Engineering Projects for BE/ME students. For any kind of
support you may live chat with us at www.ocularsystems.in or call us on 020 30858066
or
Mail Us: info@ocularsystems.in
Our Address: Swagat Corner Building, Near Narayani Dham Temple, Katraj, Pune-46
(Maharashtra)
OABS and show how to achieve accountability and outsourced verification as
well.
EXISTING SYSTEM:
We specify that existing work of ABS requires a large number of exponentiations
in signing. The complexity commonly grows linearly with the size of the
predicate formule in threshold ABS6. Such inefficiency becomes even more
serious for ABS with more expressive predicate. The problem that how to
securely outsource different kinds of expensive computations has drew
considerable attention from theoretical computer science community.
PROPOSED SYSTEM:
The proposed OABS scheme with outsourced verification reduces the
computation load at signer side through delivering computation to V-CSP but
only lefting two exponentiations locally. Because the outsourcing verification
method is the same as, the security can be also guaranteed based on the
assumption that the S-CSP does not collude with the V-CSP. In another word, V-
CSP cannot cheat to let an invalid signature pass the verification algorithm
because is blinded and not available to V-CSP
PROBLEM STATEMENT:
There are three entities involved in our OABS system, namely, the attribute
authority, users (include signers and verifiers), and S-CSP. Typically, the signers
obtain their private keys from attribute authority, with which they are able to
sign messages later for any predicate satisfied by the possessed attributes.
3. We develops Computer Engineering Projects for BE/ME students. For any kind of
support you may live chat with us at www.ocularsystems.in or call us on 020 30858066
or
Mail Us: info@ocularsystems.in
Our Address: Swagat Corner Building, Near Narayani Dham Temple, Katraj, Pune-46
(Maharashtra)
Verifiers will be convinced of the fact that whether a signature is from one of the
users whose attributes satisfy the signing predicate, but remaining completely
ignorant of the identity of the signer. Different from the definition of traditional
ABS an additional entity S-CSP is introduced. Specifically, S-CSP is to finish the
outsourced expensive tasks in signing phase and relieve the computational
burden at signer side.
SCOPE:
The proposed scheme of OABS must satisfy outsource able requirement.
Specifically, the running time of Sign must be less than directly computing the
signature itself. In original ABS construction, it requires single-based
exponentiations to generate the signature. However, since multiple
exponentiations have been delivered to S-CSP, in OABS-I, the signing algorithm
Sign simply requires 3 single-based exponentiations, which is independent of the
attribute to be signed. We also specify that our technique in OABS-I allows S-CSP
to perform delegated signing by employing an AND gate at private key for each
user. Therefore, to generate an outsourcing key, attribute authority has to
compute exponentiations in G, which is linear with the size of request attribute
set Ω. Fortunately, in practical, the generation is allowed to be performed once
for all. After obtaining private key and outsourcing key from authority, user is
able to (delegated) sign any message with it. Such amortized computation cost of
generating the outsourcing key is rather low cost. Moreover, we consider a
scenario that user has limited computation and storage ability. In this case, the
outsourcing key can be firstly generated by authority and sent to S-CSP.
Therefore, user only needs to store a small-sized component locally but still
maintaining signing capability.
4. We develops Computer Engineering Projects for BE/ME students. For any kind of
support you may live chat with us at www.ocularsystems.in or call us on 020 30858066
or
Mail Us: info@ocularsystems.in
Our Address: Swagat Corner Building, Near Narayani Dham Temple, Katraj, Pune-46
(Maharashtra)
MODULE DESCRIPTION:
Number of Modules
After careful analysis the system has been identified to have the following
modules:
1. Cloud Computing Module.
2. Attribute Based Signature Module.
3. OutsourceABS Computation Module.
4. OABS With Outsource Verification Module.
1. Cloud Computing Module:
Cloud computing, provides the feasibility to reduce the computation overhead at
user side by outsourcing the computation of signing to a signing-cloud service
provider (S-CSP). This presents a significant challenge for users that manage and
view private data on mobile devices where processors are often one to two
orders of magnitude slower than their desktop counterparts. We employ a
hybrid private key by introducing a default attribute for all the users in the
system. The private key component for user's attributes (denoted as outsourcing
key OK in this paper) which is to be utilized by S-CSP to compute the outsourced
signature; ii) the private key component for the default attribute which is to be
utilized by signer to generate a normal ABS signature from the outsourced
signature returned from S-CSP.
5. We develops Computer Engineering Projects for BE/ME students. For any kind of
support you may live chat with us at www.ocularsystems.in or call us on 020 30858066
or
Mail Us: info@ocularsystems.in
Our Address: Swagat Corner Building, Near Narayani Dham Temple, Katraj, Pune-46
(Maharashtra)
2. Attribute Based Signature Module:
Attribute-based signature (ABS) enables a party to sign a message with _fine-
grained access control over identifying information. Specifically, in an ABS
system, users obtain their attribute private keys from an attribute authority, with
which they can later sign messages for any predicate satisfied by their attributes.
A verifier will be convinced of the fact that whether the signer's attributes satisfy
the signing predicate while remaining completely ignorant of the identity of
signer. ABS is much useful in a wide range of applications including private
access control, anonymous credentials, trust negotiations, distributed access
control for ad hoc networks, attribute-based messaging.
3. Outsource ABS Computation Module:
Outsourced attribute-based signature scheme OABS consists of five probabilistic
polynomial-time algorithms below:
Setup: It takes as input the security parameter _, attribute universe U and an
auxiliary information d. It outputs the public key PK and the master key MK.
Key Gen (MK; Ω) : For each user's private key request on attribute set Ω, the
private key generation algorithm takes as input the master key MK and the
attribute set Ω. It outputs the user's private key SK and the outsourcing key OK.
Sign out (OK; Ω; _): The outsourced signing algorithm takes as input the
outsourcing key OK, the corresponding attribute set Ω and the predicate _. It
outputs the partial signature _part.
Sign (SK;M; _part; _) : The signing algorithm takes as input the private key SK,
the message M, the partial signature _part and the corresponding predicate _. It
outputs the signature _ of message M with the predicate _.
6. We develops Computer Engineering Projects for BE/ME students. For any kind of
support you may live chat with us at www.ocularsystems.in or call us on 020 30858066
or
Mail Us: info@ocularsystems.in
Our Address: Swagat Corner Building, Near Narayani Dham Temple, Katraj, Pune-46
(Maharashtra)
Verify (M; _; _; PK) : The verifying algorithm takes as input a message M, the
signature _,the predicate _ and public key PK. It outputs 1 if the original
signature is deemed valid and 0 otherwise.
5. OABS With Outsource Verification Module:
This technique can only guarantee the correctness of outsourced computation
with accountability, it cannot check the correctness and detect the misbehaves of
S-CSP on spot. To solve this problem, we provide another solution to verify the
outsourced signature with low computational cost by introducing another
independent entity called verifying-cloud service provider (V-CSP). We also
introduce an assumption that the S-CSP and V-CSP will not collude. Actually,
such assumption has also appeared to deal with the problem of secure
outsourcing computation as well. Accordingly, an outsourced verification
protocol, including the transformation algorithm for outsourced verification
Transfer, the outsourced verifying algorithm Verifyout and the verifying
algorithm Verify, replaces the original verifying algorithm in OABS definition.
SOFTWARE REQUIREMENTS:
Operating System : Windows
Technology : Java and J2EE
Web Technologies : Html, JavaScript, CSS
7. We develops Computer Engineering Projects for BE/ME students. For any kind of
support you may live chat with us at www.ocularsystems.in or call us on 020 30858066
or
Mail Us: info@ocularsystems.in
Our Address: Swagat Corner Building, Near Narayani Dham Temple, Katraj, Pune-46
(Maharashtra)
IDE : My Eclipse
Web Server : Tomcat
Tool kit : Android Phone
Database : My SQL
Java Version : J2SDK1.5
HARDWARE REQUIREMENTS:
Hardware : Pentium
Speed : 1.1 GHz
RAM : 1GB
Hard Disk : 20 GB
Floppy Drive : 1.44 MB
Key Board : Standard Windows Keyboard
Mouse : Two or Three Button Mouse
Monitor : SVGA
8. We develops Computer Engineering Projects for BE/ME students. For any kind of
support you may live chat with us at www.ocularsystems.in or call us on 020 30858066
or
Mail Us: info@ocularsystems.in
Our Address: Swagat Corner Building, Near Narayani Dham Temple, Katraj, Pune-46
(Maharashtra)