Research Article
Design of a Blockchain-Based Traceability System with a Privacy-Preserving Scheme of Zero-Knowledge Proof
Algorithm 1 Authentication algorithm.
| | Input: ID, PKt, SKte, Tx | | | Output: AuthResult | | (1) | ProductData = PID|TxTS|TxHash|random(r) | | (2) | ProductSign = sign(sign(ProductData,SKp),PKa)|TxHash | | (3) | TDP.send(ProductSign) | | (4) | recvData = TDA.recv() | | (5) | ProductData = decrypt(recvData,SKa).decrypt(recvData,PKp) | | (6) | if verify(PID): | | (7) | authToken = hash(ProductData) | | (8) | else: | | (9) | deny() | | (10) | TDA.send(authToken|PID) | | (11) | authToken = TDP.recv() | | (12) | if authToken = = hash(ProductData) | | (13) | IndentityConfirmed() | | (14) | Else | | (15) | deny |
|
