Access control scheme with attribute revocation for SWIM

Access control scheme is proposed for System Wide Information Management(SWIM) to address the problem of attribute revocation in practical applications.Based on the attribute based encryption(ABE),this scheme introduces the proxy re-encryption mechanism and key encrypting key(KEK) tree to realize fine-grained access control with attribute revocation.This paper defines the attributes according to the status quo of civil aviation.Compared with some other schemes proposed before,this scheme not only shortens the length of ciphertext(CT) and private key but also improves the efficiency of encryption and decryption.The scheme can resist collusion attacks and ensure the security of data in SWIM.