An efficient certificateless encryption for data sharing on public cloud
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This document summarizes a seminar presentation on an efficient certificate-less encryption for secure data sharing in public clouds. The presentation covers the introduction to cloud computing and encryption/decryption techniques. It discusses the scope of applying mediated certificate-less public key encryption to solve key escrow and revocation problems. The objective is to design an attribute-based encryption scheme that allows encrypted data access based on access policies. The presentation reviews existing algorithms and proposes a pairing-free certificate-less public key cryptography approach. It describes the system architecture and implementation details. The results show the proposed scheme improves efficiency and provides confidentiality of data and keys when using untrusted public clouds.
An efficient certificateless encryption for data sharing on public cloud
- 1. A Seminar Presentation On An Efficient Certificate-less Encryption for Secure Data Sharing in Public Clouds Seminar by :- Abhijeet S. Patil
- 2. Contents Introduction Scope Objective Literature Review and Proposed system Motivational Outcome System Architecture Implementation Details Existing Algorithm Selected Algorithm Application and Results Conclusion References
- 3. Introduction
- 4. Cloud Computing • Cloud Computing is the delivery of computing services over the Internet. • Types of Cloud Computing • Private Cloud • Public Cloud • Hybrid Cloud • Community Cloud • Organizations have been adopting public cloud services such as Microsoft Skydrive, Dropbox, Google Drive to manage their data with the help of Cloud Computing
- 5. Encryption and Decryption • Encryption • The data owner obtains the key of users from the cloud. Then data owner encrypts the data using the public key of user. • Types of Encryption Symmetric Key Encryption Public key Encryption • Decryption • When a user wants to read some data, it sends a request to the Sender to obtain the partially decrypted data. • With the help of private key he decrypts the data and access it.
- 6. Scope of Proposed System Mediated certificateless public key encryption (mCL-PKE) solves the key escrow problem in identity based encryption and certificate revocation problem in public key cryptography. Since most CL-PKC schemes are based on bilinear pairings, they are computationally expensive. Our scheme reduces the computational overhead by using a pairing-free approach. Compared to symmetric key based mechanisms, our approach can efficiently manage keys and user revocations.
- 7. Objective of Seminar Existing Machine Objective :- Existing mCL-PKE schemes are either inefficient because of the use of expensive pairing operations or vulnerable against partial decryption attacks. Seminar Objective & Scope :- Attribute Based Encryption(ABE) has been proposed that allows one to encrypt each data item based on the access control policy applicable to the data.
- 9. Motivational Outcome Implementation of a mCL-PKE scheme and evaluation of its security to provide a confidentiality of the data stored in an untrusted cloud improve the efficiency of encryption at the data owner. The confidentiality of the content and the keys is preserved with respect to the cloud, because the cloud cannot fully decrypt the information results show that our schemes are efficient and practical
- 12. Existing Algorithm Certificateless public key cryptography (CL-PKC) Ciphertext-Policy Attribute-Based Encryption Relations Among Notions of Security for Public-Key Encryption Schemes RSA trapdoor Encryption Fuzzy Identity-Based Encryption A Certificateless Proxy Re-Encryption Scheme for Cloud-based Data Sharing
- 13. Selected Algorithm SetUp SetPrivateKey SetPublicKey Encrypt USER-Decrypt
- 15. Applications and Results mCL-PKE scheme is applied to construct a practical solution to the problem of sharing sensitive information in public clouds. The confidentiality of the content and the keys is preserved with respect to the cloud. Result shows that the scheme system implemented is effective, efficient and practical. Data retrieval, Data encryption and Data decryption strategy
- 16. Conclusion In this seminar, it is proposed the first CL-PKE scheme without pairing operations and provided its formal security. So, here In public key systems supporting queries on encrypted data a secret key can produce tokens for testing any supported query predicate. We presented a general framework for analyzing security of searching on encrypted data systems. The mCL- PKE solves the key escrow problem and revocation problem
- 17. Thank you…!!!!!!