Method for attribute based broadcast encryption with permanent revocation

Shlomi Dolev (Inventor), Niv Gilboa (Inventor), Marina Kopeetsky (Inventor)

Research output: Patent


The invention is a method for broadcast encryption that allows a broadcaster to send encrypted data to a set of users such that only a subset of authorized users can decrypt said data. The method comprises modifications to the four stages of the basic Cipher-text Policy Attribute- Based Encryption techniques. The method can be adapted to transform any Attribute-Based Encryption scheme that supports only temporary revocation into a scheme that supports the permanent revocation of users.

Original languageAmerican English
Patent numberWO2013027206
IPCH04N 21/ 00 A I
Priority date24/08/11
StatePublished - 28 Feb 2013


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