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A crucial security aspect of attribute-based encryption is collusion-resistance: An adversary that holds multiple keys should only be able to access data if at least one individual key grants access.
==Description==
Attribute-based encryption is a generalisation<ref name="Herranz2017">{{cite journal | last1 = Herranz | first1 = Javier | title = Attribute‐based encryption implies identity‐based encryption | journal = IET Information Security | date = November 2017 | volume = 11 | issue = 6 | pages = 332–337 | issn = 1751-8709 | eissn = 1751-8717 | doi = 10.1049/iet-ifs.2016.0490 | pmid = | url = }}</ref> of [[Identity-based encryption]].
==History==
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