An Identity-Based Conditional Proxy Re-Encryption in Cloud Computing Environments

Abstract:

In this paper, an identity-based conditional proxy re-encryption (PRE) scheme is proposed, where a delegator provides a re-encryption key satisfying one condition to a semi-trusted proxy who can convert a ciphertext encrypted under the delegator’s public key into one that can be decrypted using the delegatee’s private key. We address the identity-based proxy re-encryption scheme, where the delegator and the delegatee request keys from a trusted party known as a key generator center (KGC), who generates private keys for delegator and delegatee based on their identities. Meanwhile, the identity-based conditional proxy re-encryption scheme satisfies the properties of PRE including unidirectionality, non-interactivity and multi-hop. Additionally, the identity-based conditional proxy re-encryption scheme is efficient in terms of both the communication cost and the computing cost, and can realize security secret sharing in cloud computing environments.

• Periodical: Applied Mechanics and Materials (Volumes 571-572)
• Pages: 74-78
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.571-572.74
• Online since: June 2014
• Authors: Xian Yong Meng, Zhong Chen, Xiang Yu Meng*, Bing Sun
• Keywords: Bilinear Pairing, Cloud Computing, Identity-Based Encryption, Proxy Re-Encryption

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