BibTeX
@INPROCEEDINGS{Green07identity-basedproxy,
author = {Matthew Green},
title = {Identity-based proxy re-encryption},
booktitle = {In ACNS ’07},
year = {2007},
pages = {288--306},
publisher = {Springer}
}
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Abstract
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 current IBE deployments and do not require any extra work from the IBE trusted-party key generator. In addition, they are non-interactive and one of them permits multiple re-encryptions. Their security is based on a standard assumption (DBDH) in the random oracle model.
Citations
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