• Sakshi Singh
• Kumari Princee
• Jyoti Ochani
• Himani Pawar
• V.D. Kulkarni

Now a day’s people are using their smart phones for various purposes like uploading data, sharing data, use of online services, etc. along with their primary functions. But the problem with smart phones is that they are having limited computational and storage resources. Use of cloud computing in a mobile computing environment solves this problem which also increases the capacity of mobile devices. But the major concern about the use of cloud is the security issue which also becomes the problem in the mobile cloud computing environment. We proposed a light-weighted cryptographic mechanism a proxy re-encryption to solve the data integrity, data security issues in which users have to keep only short secret keys for all cryptographic operations in the mobile cloud without the involvement of any trusted third party. Group information sharing in cloud environments has become a boiling topic in modern decades. With the recognition of cloud computing, the way to reach secure associated economical information sharing in cloud environments is a pressing drawback to be resolved. Additionally, the way to reach each obscurity and traceability is a challenge within the cloud for information sharing. This paper focuses on sanctioning information sharing associated storage for a constant cluster within the cloud with high security and potency in an anonymous manner. By investment, the key agreement and therefore the cluster signature, a piece of unique traceable cluster information sharing theme is projected to support anonymous multiple users publically clouds. On the one hand, cluster members will communicate anonymously regarding the cluster signature, and therefore the real identities of members are traced if necessary.

AES (Advance encryption standard) Algorithm, Keyword Extraction, Group data sharing, ECC (elliptic curve cryptography

"Cryptographically Enforced Dynamic Access Control and traceable group data sharing in the Cloud", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 4, page no.503-506, April 2020, Available :http://www.jetir.org/papers/JETIR2004563.pdf

"Cryptographically Enforced Dynamic Access Control and traceable group data sharing in the Cloud", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 4, page no. pp503-506, April 2020, Available at : http://www.jetir.org/papers/JETIR2004563.pdf