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Data timing transmission method based on block chain

A technology of timing transmission and blockchain, applied in the field of communication, can solve the problem that the security and functionality of the solution cannot be guaranteed.

Active Publication Date: 2022-06-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can make the data reach the receiver at a precise and absolute time, but there is a single point of failure in this type of scheme: once there is malicious behavior in the TTP, the security and functionality of the entire scheme cannot be guaranteed

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  • Data timing transmission method based on block chain
  • Data timing transmission method based on block chain
  • Data timing transmission method based on block chain

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Embodiment Construction

[0045] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] see figure 1 , this embodiment provides a block chain-based data timing transmission method:

[0047] S01. Set public parameters, the sender's public-private key pair, the transmission server's public-private key pair, and the receiver's public-private key pair.

[0048] In one embodiment, the S01 includes:

[0049] S011. According to the security parameter l, determine the public parameter set PP={p, P, G, H, E( ), D( ), Enc( ), Dec( ), Sig( ), n, t }, where p is a prime number, G is a cyclic group of or...

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Abstract

The invention discloses a block chain-based data timing transmission method. The method comprises the following steps: a sender deploys a smart contract on a block chain; the sender divides the encryption key of the data to be transmitted into a plurality of sub-secrets; the sender encrypts to-be-transmitted data to obtain a data ciphertext; the sender uploads the transmission task information to the smart contract; the sender selects a plurality of transmission servers, and the transmission servers register in the smart contract; the sender encrypts the sub-secret; the sender sends the encrypted sub-secret to a corresponding transmission server; the transmission server discloses a sub-secret held by the transmission server in a transmission time period; the smart contract verifies the validity of the sub-secret disclosed by the transmission server; and the receiver recovers the data plaintext from the data ciphertext. According to the invention, the data sender can enable one piece of private data to arrive at the receiver within the preset time range, and the sender does not need to keep online.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method for timing data transmission based on a block chain. Background technique [0002] The timed data transmission service enables private data to reach the data receiver within a certain future time range preset by the sender. Existing solutions rely on the time lock problem or a trusted third party (TTP) to realize the timed transmission of data . [0003] The time-locking problem requires the receiver to spend a lot of computing power to solve a problem (for example, repeatedly computing the square of the product modulo two prime numbers), where the difficulty of the problem determines the lower limit of the time the receiver must spend. After the problem is solved, the receiver can obtain the plaintext of the data. In this way, the arrival time of the data depends on the computing power of the CPU used by the receiver to solve the puzzle and the time w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/40H04L9/08H04L9/30H04L9/32H04L9/06
CPCH04L9/3026H04L9/085H04L9/0643H04L9/3236H04L9/3247H04L63/062H04L63/12
Inventor 张源李诗雨宋雅晴刘鹏飞
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA