Software and hardware combined signature generation and verification mode and system

Abstract

The invention belongs to the technical field of block chains, and particularly relates to a software and hardware combined signature generation and verification mode and system, which uses hardware based on a security encryption chip for signature and effectively protects the security of a private key. Before a chip signs transaction data, the transaction serial number is added to ensure that the transaction is executed according to a specified sequence, and before the chip signs the transaction data, the transaction timestamp and the transaction validity period are added to ensure that the transaction time is reliable. Through a mode of combining hardware signature and block chain verification, a developer does not need to independently implement the verification process, and the development efficiency is improved. By adopting the signature generation and verification method combining software and hardware, the problem of transaction sequence disorder caused by network problems or hostile attacks in the uplink process and the problem of transaction time disorder caused by the network problems or hostile attacks in the uplink process are thoroughly solved, and the security of the transaction uplink process is effectively improved; and the transaction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of blockchain, and in particular relates to a signature generation and verification method and system combining software and hardware. Background technique [0002] Blockchain technology is a decentralized distributed Internet database and a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. The blockchain can safely store transactions or other data, and the information cannot be forged or tampered with. The transactions involved can be digital currencies such as Bitcoin, or digital assets such as creditor's rights, equity, and copyrights. In a broad sense, they can be any digital information. Its appearance has greatly reduced the trust cost and accounting cost of the real economy. Relying on the blockchain chain structure and time stamp technology, the information on the chain is only allowed to be a...

AI Technical Summary

Problems solved by technology

[0004] The existing hardware private key generates a signature, and the method of software signature verification is suitable for most scenarios that need to verify the signature, but from the stage after the signature is generated to the stage before the transaction is packaged into the block, it is mostly controlled by a networked third-party wallet or transaction software , may be subject to network attacks. For the behavior of maliciously modifying the transaction sending order, delaying sending transactions, and discarding transactions during the transaction chaining process, resulting in disordered transactions on the chain and disordered transaction time, the private key holder itself and the blockchain can not be bound

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