Multiauthority Attribute-Based Access Control for Supply Chain Information Sharing in Blockchain

Algorithm 1

Anonymous key generation protocol.

(1) User has his/her global ID .

(2) Authority has this identity and ’s attribute ’s parameters .

(3) randomly chooses .

(4) computes and sends them to .

(5) should proof he/she knows in zero-knowledge

(6) if the proof is successful then

(7)   continues.

(8) else

(9)   aborts.

(10) end if

(11)  : .

(12) computes and sends them to .

(13) proofs it knows in zero-knowledge to Users

(14) if the proof is successful then

(15)   computes and as his/her user attribute secret keys.

(16) else

(17)   aborts.

(18) end if