Adaptive Secure Cross-Cloud Data Collaboration with Identity-Based Cryptography and Conditional Proxy Re-Encryption

Chosen-ciphertext secure multi-hop identity-based conditional proxy re-encryption with constant-size ciphertexts

Identity-Based Proxy Re-encryption

In a proxy re-encryption scheme a semi-trusted proxy converts a ciphertext for Alice into a ciphertext for Bob without seeing the underlying plaintext. A number of solutions have been proposed in the public-key setting. In this paper, we address the problem of Identity-Based proxy re-encryption, where ciphertexts are transformed from one identity to another. Our schemes are compatible with curr...

Provably Secure Certificate-based Conditional Proxy Re-encryption

A proxy re-encryption scheme (PRE) allows a semi-trusted proxy to convert a ciphertext encrypted under one key into a ciphertext encrypted under another key without leaking the underlying plaintext. In the process of the arithmetic processing, proxy should be able to learn as little information about the plaintext as possible. Conditional proxy re-encryption (CPRE) is a new cryptography primiti...

A New Security Cloud Storage Data Encryption Scheme Based on Identity Proxy Re-encryption

In the process of cloud data storage, data owner will encrypt data and upload it to the cloud, however, this method cannot support for encrypted data sharing. Especially, when data is shared with many users, the scalability is very weak. In order to solve this problem, we put forward a new security cloud storage data encryption scheme based on identity proxy re-encryption in this article. This ...

Inter-domain Identity-Based Proxy Re-encryption

Proxy re-encryption is a cryptographic primitive developed to delegate the decryption right from one party (the delegator) to another (the delegatee). So far, research efforts have only been devoted to the intra-domain setting, where the delegator and the delegatee are registered in the same domain. In this paper, we investigate the proxy re-encryption in the inter-domain setting, where the del...