Abstract: Data sharing and large acceptance of cloud computing is rapid development in cloud storage. The guarantee of the customers data protection is becoming that delay wide acceptance of cloud computing. To secure data sharing of cloud computing is talented explanation of third party re-encryption. A data holder to encrypt distributed data in cloud storage to permits under its individual public key which is changed by a semi-trusted cloud server into a planned encryption for the genuine beneficiary for access control. This study provides a solid and inspirational review of third party re-encryption from dissimilar perspectives to recommend an improved accepting of this primitive. In exacting, the third party re-encryption is evaluated by observing the protection methods and the intend philosophy. In addition, the possible applications and additions of third party re-encryption have also been conversed.