Tree Based Symmetric Key Broadcast Encryption

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Provided by: Indian Statistical Institute
Topic: Security
Format: PDF
Broadcast Encryption (BE) deals with the problem of broadcasting encrypted data. For each transmission (or session), there is a set of privileged users who should be able to decrypt the data and a set of revoked users who should not be able to do so. In symmetric key BE, there is a center which initially distributes keys to all the users and also broadcasts the encrypted data in each session. In each session, the data to be broadcast is encrypted with a random session key using a symmetric key encryption algorithm.
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