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cipher
சைபர்
Ultimo aggiornamento 2013-03-04
Frequenza di utilizzo: 2
Qualità:
key-aggregate cryptosystem for scalable data sharing in cloud storage is a data sharing is an important functionality in cloud storage. in this project, we show how to securely, efficiently, and flexibly share data with others in cloud storage. we describe new public-key cryptosystems that produce constant-size cipher texts such that efficient delegation of decryption right’s for any set of cipher texts are possible. the novelty is that one can aggregate any set of secret keys and make them as compact as a single key, but encompassing the power of all the keys being aggregated. in other words, the secret key holder can release a constant-size aggregate key for flexible choices of cipher text set in cloud storage, but the other encrypted files outside the set remain confidential. this compact aggregate key can be conveniently sent to others or be stored in a smart card with very limited secure storage. we provide formal ssecurity analysis of our schemes in the standard model. we also describe other application of our schemes.
பத்தி
Ultimo aggiornamento 2015-05-10
Frequenza di utilizzo: 3
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