Transaction method and device based on blind signatures
A transaction method and blind signature technology, applied in the computer field, can solve security problems in the transaction process and other issues
Active Publication Date: 2019-07-02
BEIJING WODONG TIANJUN INFORMATION TECH CO LTD
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Problems solved by technology
[0004] However, eavesdroppers can obtain the private information of both parties to the transaction based on the address information, which leads to security problems in the transaction process
Method used
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[0086] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0087] First, the concept of blockchain involved in the present invention is explained.
[0088] Blind signature is a way to sign a message, which allows the message sender to blind the original message first, and then let the signer sign the blinded message, and finally the message sender performs the blinding process according to the deblinding ...
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The embodiment of the invention provides a transaction method and device based on blind signatures. The method comprises the following steps: a payment client performs blind processing according to transaction service parameters and signature data to obtain a blind result; and the payment client sends a first signature request to the currency providing node. A currency providing node receives thefirst signature request sent by the payment client, and signs the blind result to obtain a first signature result. The currency providing node sends the first signature result to the payment client. The payment client receives the first signature result sent by the currency providing node. The payment client deblinds the first signature result to obtain a second signature result, and sends the second signature result and the signature data to the collection client. The collection client sends the second signature result and the signature data to the currency providing node. The currency providing node completes the transaction after the signature data and the second signature result pass the verification, thereby improving the security of the transaction.
Description
technical field [0001] The embodiments of the present invention relate to computer technology, and in particular to a blind signature-based transaction method and device. Background technique [0002] Blockchain is a de-intermediary database. In the process of transactions based on blockchain, blockchain provides a publicly visible, tamper-resistant, and decentralized system for both parties to the transaction. [0003] In the existing technology, when a transaction is based on the blockchain, the two parties to the transaction upload the transaction-related information including the address information of the transaction parties to the blockchain, and the nodes in the blockchain verify the transaction according to the transaction-related information. After the verification is passed The control transaction is completed. [0004] However, eavesdroppers can obtain the private information of both parties to the transaction based on the address information, which leads to secu...
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IPC IPC(8): G06Q20/38G06Q20/40G06Q40/04
CPCG06Q20/3825G06Q20/4014G06Q40/04G06Q40/00G06Q30/06G06Q20/401G06Q2220/00G06Q20/02G06Q20/0655G06F21/64H04L9/3257H04L2209/56H04L9/50H04L63/12G06Q20/065G06Q20/389H04L9/088H04L9/30
Inventor 张林黄海泉孙海波
Owner BEIJING WODONG TIANJUN INFORMATION TECH CO LTD