• Miss. Rutuja Tuwar
• Dr. R. B. Ingle

Continuous changes in the membership of data sharing giving security and privacy preservation are still challenging issues, especially for untruth cloud due to collusion attack. It is based on the secure key distribution without assuming any secure communication channel. Our system proposes a secure re-encryption scheme of data sharing scheme without assuming secure communication channel for dynamic group in cloud. It also prevents access of client after their revocation and protect after collusion attacks. In our system provide guarantee for secure sharing of data files when they are outsourced with double encryption. Our system is able to support the Dynamic groups when user join in the group or user revoked from group, the private key of other user compulsory recomputed and updated.

Access control, privacy-preserving, Key Distribution and cloud Computing.

"A Secure Re- Encryption Scheme of Data Sharing for Dynamic Group in the Cloud", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.658-665, June 2019, Available :http://www.jetir.org/papers/JETIR1906P95.pdf

"A Secure Re- Encryption Scheme of Data Sharing for Dynamic Group in the Cloud", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp658-665, June 2019, Available at : http://www.jetir.org/papers/JETIR1906P95.pdf