Revision as of 11:35, 10 January 2023 edit DanShearer (talk \| contribs) Extended confirmed users 810 edits m Emphasise that there is proof of ABE being a generalisation of IBE ← Previous edit		Revision as of 12:53, 10 January 2023 edit undo DanShearer (talk \| contribs) Extended confirmed users 810 edits m Better explanation in first sentence Next edit →
Line 1: '''Attribute-based encryption''' is a ~~type~~generalisation of [[public-key encryption]] in which ~~the~~enables fine grained access control on encrypted data. The [[secret key]] of a user and the ciphertext are dependent upon attributes (e.g. their email address, the country in which they live, or the kind of subscription they have). In such a system, the decryption of a ciphertext is possible only if the set of attributes of the user key matches the attributes of the ciphertext.<ref>{{cite web \|title=What is Attribute-Based Encryption \|work=Cryptography Stack Exchange \|url=https://crypto.stackexchange.com/a/17894 \|date=2014 }}</ref> 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.

Attribute-based encryption: Difference between revisions