CL-PRE: a Certificateless Proxy Re-Encryption Scheme for Secure Data Sharing with Public Cloud

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Provided by: Association for Computing Machinery
Topic: Cloud
Format: PDF
The authors propose CL-PRE, a CertificateLess Proxy RE-encryption scheme for secure data sharing with public cloud. In CLPRE, a data owner encrypts shared data in cloud with an encryption key, which is further encrypted and transformed by cloud, and then distributed to legitimate recipients in accordance with access control. Uniquely, the cloud-based transformation leverages re-encryption keys derived from private key of data owner and public keys of receipts, and eliminates the key escrow problem in identity based cryptography and the need of certificate.
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