Group-Based Unidirectional Proxy Re-Encryption Scheme
نویسندگان
چکیده
منابع مشابه
Revisit of Group-based Unidirectional Proxy Re-encryption Scheme
Currently, researchers have focused their attention on proxy re-encryption scheme deployed between two entities. Lots of bidirectional schemes have been proposed and this kind of scheme is suitable for the scenario in which the two entities have already established a relationship of trust. How to construct a unidirectional scheme is an open problem and receiving increasing attention. In this pa...
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Recently, proxy re-encryption scheme received much attention. In this paper, we propose a proxy re-encryption used for divert ciphertext from one group to another. The scheme is bidirectional and any member can independently decrypt the ciphertexts encrypted to its group. We discuss the security of the proposed scheme and show that our scheme withstands chosen ciphertext attack in standard model.
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Proxy re-encryption (PRE) allows a semi-trusted proxy to convert a ciphertext originally intended for Alice into one encrypting the same plaintext for Bob. The proxy only needs a re-encryption key given by Alice, and cannot learn anything about the plaintext encrypted. This adds flexibility in various applications, such as confidential email, digital right management and distributed storage. In...
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Proxy re-encryption (PRE) allows a semi-trusted proxy to convert a ciphertext intended for Alice into a ciphertext for Bob without learning anything about the underlying plaintext. Chunbo Ma et al. have proposed a group based proxy re-encryption scheme to convert a ciphertext from one group to another. Any group member can independently decrypt the ciphertexts encrypted to its group. In their p...
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ژورنال
عنوان ژورنال: Information Technology Journal
سال: 2008
ISSN: 1812-5638
DOI: 10.3923/itj.2009.83.88