A secure anti collision data sharing scheme in dynamic groups in the cloud
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This document presents a secure anti-collusion data sharing scheme for dynamic groups in the cloud. It proposes a method for secure key distribution without secure communication channels, allowing users to securely obtain private keys from a group manager. The scheme provides fine-grained access control and revokes users' access to the cloud. It aims to improve on existing systems by making the computation cost independent of the number of revoked users. The proposed system architecture includes cloud, group manager, and group member modules.
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A secure-anti-collusion-data-sharing-scheme-for-dynamic-groups-in-the-cloud
This document proposes a secure data sharing scheme for dynamic groups in the cloud. It allows group members to securely access and share data files stored in the cloud. The scheme provides secure key distribution without requiring secure communication channels. It also enables fine-grained access control and prevents collusion attacks between revoked users and the cloud. When users join or leave the group, other users do not need to update their private keys. The scheme aims to address limitations of existing approaches that require updating file-block keys for revocations and have overhead linearly increasing with member/revocation changes.
A secure anti collusion data sharing scheme for dynamic groups in the cloud
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A secure anti collusion data sharing scheme for dynamic groups in the cloud
This document proposes a secure data sharing scheme for dynamic groups in the cloud that achieves:
1) Secure key distribution without secure communication channels by verifying user public keys.
2) Fine-grained access control where legitimate users can access data in the cloud while revoked users cannot.
3) Protection against collusion attacks where revoked users cannot obtain data files even by conspiring with the cloud.
4) Efficient support for dynamic groups where adding/removing users does not require updating other users' keys.
Secure data sharing for dynamic groups in multi-owner using cloud
This document summarizes a seminar presentation on secure data sharing for dynamic groups in multi-owner cloud environments. The presentation covered cloud computing fundamentals and challenges with identity privacy. It proposed a system called MONA that allows any group member to securely store and share encrypted data files on an untrusted cloud. Key features of MONA include dynamic group management such that new users can access previous data, anonymous yet traceable access control, and efficient user revocation. The presentation discussed the system architecture, models, modules including registration, login and file sharing, relevant algorithms, applications, advantages, and future work concerning reliability.
A Review on Key-Aggregate Cryptosystem for Climbable Knowledge Sharing in Clo...
The Data sharing is an important functionality in cloud storage. In this article, we show how to securely, efficiently, and
flexibly share data with others in cloud storage. We describe new public-key cryptosystems which produce constant-size ciphertexts
such that efficient delegation of decryption rights for any set of ciphertexts are possible. The novelty is that one can aggregate any set
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a smart card with very limited secure storage. We provide formal security analysis of our schemes in the standard model. We also
describe other application of our schemes. In particular, our schemes give the first public-key patient controlled encryption for flexible
hierarchy, which was yet to be known.
Mona secure multi owner data sharing for dynamic groups in the cloud
1) The document proposes a secure multi-owner data sharing scheme called Mona for dynamic groups in the cloud. Mona allows any user in a group to anonymously share data with others using techniques like group signatures and dynamic broadcast encryption.
2) Mona supports efficient membership changes without updating secret keys. New users can decrypt pre-existing files and revoking users does not require updating keys of remaining users.
3) Mona provides privacy-preserving access control where users can anonymously access cloud resources while allowing identity tracing by the group manager when needed. It aims to achieve secure and flexible data sharing for dynamic groups in the cloud.
A self destruction system for dynamic group data sharing in cloud
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
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A secure anti collision data sharing scheme in dynamic groups in the cloud
- 1. A Secure Anti-Collusion Data Sharing Scheme for Dynamic Groups in the Cloud BY: GUIDE:
- 2. ABSTRACT •A secure way for key distribution without any secure communication channels, and the users can securely obtain their private keys from group manager. Our scheme can achieve fine-grained access control, any user in the group can use the source in the cloud and revoked users cannot access the cloud again after they are revoked.
- 3. EXISTING SYSTEM A cryptographic storage system that enables secure data sharing on untrustworthy servers based on the techniques that dividing files into file groups and encrypting each file group with a file-block key.
- 4. DISADVANTAGES OF EXISTING SYSTEM •The complexities of user participation and revocation in these schemes are linearly increasing with the number of data owners and the revoked users.
- 5. PROPOSED SYSTEM •We provide a secure way for key distribution without any secure communication channels. The users can securely obtain their private keys from group manager without any Certificate Authorities due to the verification for the public key of the user.
- 6. ADVANTAGES OF PROPOSED SYSTEM •The computation cost is irrelevant to the number of revoked users in RBAC scheme. The reason is that no matter how many users are revoked, the operations for members to decrypt the data files almost remain the same.
- 7. SYSTEM ARCHITECTURE Cloud Group Manager Group Member Registration Key Disribution
- 8. 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.
- 9. SOFTWARE REQUIREMENTS •Operating system : Windows XP/7. •Coding Language : JAVA/J2EE •IDE : Netbeans 7.4 •Database : MYSQL
- 10. MODULES •1.Cloud Module •2.Group Manager Module •3.Group Member Module •4.File Security Module •5.Group Signature Module •6. User Revocation Module .
- 11. 1. Cloud Module In this module, we create a local Cloud and provide priced abundant storage services. The users can upload their data in the cloud. We develop this module, where the cloud storage can be made secure. 1.Cloud Module
- 12. Group manager takes charge of followings: 1. System parameters generation, 2. User registration, 3. User revocation, and 4. Revealing the real identity of a dispute data owner. 2.Group Manager Module
- 13. 3.Group Member Module Group members are a set of registered users that will Store their private data into the cloud server and Share them with others in the group.
- 14. 4.File Security Module •1. Encrypting the data file. •2. File stored in the cloud can be deleted by either the group manager or the data owner. (i.e., the member who uploaded the file into the server).
- 15. 5.Group Signature Module A group signature scheme allows any member of the group to sign messages while keeping the identity secret from verifiers. Besides, the designated group manager can reveal the identity of the signature’s originator when a dispute occurs, which is denoted as traceability.
- 16. 6. User Revocation Module User revocation is performed by the group manager via a public available revocation list (RL), based on which group members can encrypt their data files and ensure the confidentiality against the revoked users.
- 17. SCREENSHOTS
- 18. Fig : Home Page
- 19. Fig : View Group Details
- 21. CONCLUSION Our scheme can achieve fine efficiency, which means previous users need not to update their private keys for the situation either a new user joins in the group or a user is revoked from the group.
- 22. REFERENCE Zhongma Zhu, Rui Jiang, “A Secure Anti-Collusion Data Sharing Scheme for Dynamic Groups in the Cloud”, IEEE Transactions on Parallel and Distributed Systems, 2015.