Tokyo-based leader

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Possible Answers: ABE.

Last seen on: Crossword – Oct 25 2018

Random information on the term “ABE”:

Attribute-based encryption is a type of public-key encryption in which the secret key of a user and the ciphertext are dependent upon attributes (e.g. the country in which he lives, or the kind of subscription he has). 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.[1]

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.

The concept of attribute-based encryption was first proposed by Amit Sahai and Brent Waters [2] and later by Vipul Goyal, Omkant Pandey, Amit Sahai and Brent Waters.[3] Recently, several researchers have further proposed Attribute-based encryption with multiple authorities who jointly generate users’ private keys.[4][5][6][7][8][9]

There are mainly two types of attribute-based encryption schemes: Key-policy attribute-based encryption (KP-ABE)[3] and ciphertext-policy attribute-based encryption (CP-ABE).[10]

ABE on Wikipedia