On the Security of Data Access Control for Multiauthority Cloud Storage Systems
Abstract— On the Security of Data Access Control for Multiauthority Cloud Storage Systems. Data access control has becoming a challenging issue in cloud storage systems. Some techniques have been proposed to achieve the secure data access control in a semi trusted cloud storage system. Recently, K. Yang et al. proposed a basic data access control scheme for multi authority cloud storage system (DAC-MACS) and an extensive data access control scheme < Final Year Projects 2016 > EDAC-MACS. They claimed that the DAC-MACS could achieve efficient decryption and immediate revocation and the EDAC-MACS could also achieve these goals even though non revoked users reveal their Key Update Keys to the revoked user.