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Broadcast Encryption (BE) is a cryptographic primitive that allows a broad-caster to encrypt a content to a specific group of users called privileged users and prevent revoked users from decrypting the content. In BE schemes, a group of users, called traitor s may leak their keys and allow illegal reception of the content. Such malicious users can be detected Through Traitor Tracing (TT) schemes. The ultimate goal in a content distribution system would be combining traitor tracing and broadcast encryption (trace and revoke mechanisms) so that any receiver key found to be compromised in a tracing process would be revoked in the future transmissions.
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