An Overview of Multi-Authority Attribute Based Encryption Techniques

Abstract: Attribute based encryption (ABE) is a powerful encryption technique used in cloud computing, IoT, social networks and other technological fields where security and privacy are essential requirements of the system. There are different types of ABE schemes and this article highlights the features of multi-authority attribute based encryption (MA-ABE) schemes.A multi-authority ABE system consists of any number attribute authorities and any number of users. A set of global public parameters is defined in the system. A user can select an attribute authority and obtain the corresponding decryption keys. The authority executes the corresponding attribute key generation algorithm and the result is returned to the user. The encryption process uses the global public parameters and an attribute set to produce the ciphertext. Decryption is performed using the decryption keys for the attribute set.

Keywords: Attribute based encryption, MA-ABE, Multi-authority key policy attribute based encryption, Multi- authority ciphertext policy attribute based encryption, DABE