Block chain transaction data privacy protection method based on homomorphic encryption

• Main Authors: LIU ZHONGTU, LIU CHEN
• Format: Patent
• Language: Chinese; English
• Published: 24.06.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a block chain transaction data privacy protection method based on homomorphic encryption, and the method comprises the steps: obtaining virtual identity information from a CA of an alliance chain by two transaction parties, and enabling a transaction party to carry out the privacy protection of the block chain transaction data through employing the homomorphism of Paillier homomorphic encryption, the transaction amount is divided into a plurality of parts which are respectively calculated, encrypted and signed by a plurality of nodes and then summarized by a transaction party, so that the two transaction parties are prevented from carrying out bogus transactions, and finally, the accounting node carries out verification and carries out the transactions; and the transaction result is visible only by both parties of the transaction, so that the privacy of the identity information and the transaction information of the user in the transaction process is ensured. The method solves the prob