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Blockchain secret key storage and exchange system based on intelligent card

A switching system and smart card technology, which is applied in the blockchain key storage and exchange system and the field of smart cards, can solve the problems of complex data structure and key management mechanism of smart cards, and achieve outstanding substantive features, simple interfaces, and clear layers Effect

Pending Publication Date: 2019-01-01
马晶瑶
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

If the payment application of A and the payment application of B have the same essence but only different interests, such a key management mechanism will be too complicated, and the data structure in the smart card will be complicated.

Method used

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  • Blockchain secret key storage and exchange system based on intelligent card

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Embodiment

[0025] A blockchain key storage and exchange system based on smart cards. The system mainly includes three types of actual physical devices and different types of software running on the respective devices. These three types of physical devices include smart cards, mobile phones with NFC and server; the system also includes a blockchain;

[0026] The smart card includes a card-type intelligent computing chip capable of running COS; the card-type intelligent computer chip randomly generates a key based on an existing asymmetric encryption algorithm through a program; the key is guaranteed not to be read and written by the outside through the program; Only the program in the card-type intelligent computer chip can perform private key signature operation on external data and return the signature result; it can also read the address information on the blockchain corresponding to the private key;

[0027] The mobile phone with NFC includes corresponding mobile phone APP for mobile ...

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Abstract

The invention discloses a blockchain secret key storage and exchange system based on an intelligent card. The system comprises an intelligent card and blockchain secret key data under the COS protection through the intelligent card; a cellphone with an NFC function, and an APP for the cellphone to read the information of the intelligent card; and a server for providing blockchain querying and transaction broadcasting services. The intelligent card of the system is portable, and the system simple in structure, and is high in safety. The cost of the intelligent card is smaller, so the intelligent card is very convenient for direct exchange.

Description

technical field [0001] The invention belongs to the technical field of communication, relates to a smart card, in particular to a smart card-based block chain key storage and exchange system. Background technique [0002] The blockchain is also known as a distributed shared ledger. Its main feature is that all participants share a unified ledger, which stores all digital currency transaction information. In this way, the transfer records and balances of all participants are stored in clear text so that each participant can view their own transaction information, but at the same time, these transaction information cannot be kept secret from the third party, and the privacy of the participants' funds cannot be protected. [0003] In order to realize the privacy protection of transaction information, traditional blockchain solutions, such as Bitcoin and Ethereum, all use the form of identity confidentiality and ledger disclosure to solve privacy issues. Specifically, on the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L9/08H04L29/06
CPCH04L9/0897H04L9/3247H04L63/061H04L2209/56
Inventor 马晶瑶
Owner 马晶瑶
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