Method for implementing blockchain dual-key hidden address protocol without temporary key leakage

Abstract

The invention belongs to the technical field of blockchain privacy information processing, and discloses a method for implementing a blockchain dual-key hidden address protocol without temporary key leakage, which comprises the following steps of initializing, generating a dual-key pair of a sender and a receiver of a transaction, and publishing the dual public keys on a blockchain; maintaining atransaction record database, enabling each user in the system to maintain a local transaction record database, and encrypting and storing the transaction times in the local transaction record databases; and hiding the transaction, hiding the address of the transaction receiver when the transfer transaction is carried out. According to the invention, the correct operation of the transaction can beensured under the condition that the transaction temporary key is not leaked, and the privacy security problem caused by the leakage of the transaction temporary key in a double-key hidden address protocol which is widely used at present is effectively solved; in addition, an enemy or an attacker cannot construct a transaction temporary output address same as that of the sender, and cannot calculate a transaction confirmation private key corresponding to the transaction temporary output address.

Description

technical field [0001] The invention belongs to the technical field of block chain privacy information processing, and in particular relates to a method for realizing a block chain dual-key hidden address protocol without temporary key leakage. Background technique [0002] Currently, the closest existing technology: In recent years, many encryption technologies have been applied to the privacy protection of the blockchain, such as zero-knowledge proof, ring signature and hidden address protocol are used to realize the transaction amount, transaction sender address and transaction Privacy of recipient address. The key work of privacy protection is the hidden address protocol. The hidden address protocol requires the sender to generate a one-time temporary output address of the transaction every time it conducts a transaction, thereby hiding the real output address of the transaction and destroying the gap between the transaction input address and the real output address. Re...

AI Technical Summary

Problems solved by technology

[0014] To sum up, the problem existing in the existing technology is: in DKSAP, a temporary public key R must be added every time a hidden transaction is made, so that the hidden transaction can be easily identified through the public key R, that is, R indicates that the corresponding transaction is a hidden transaction, and the corresponding output address is not the real recipient address of the transaction, resulting in the loss of some private information. For example, an attacker can maliciously analyze the transaction through data mining and other related technologies to obtain the IP address, user Private information of users such as fund flow trajectory, user trading habits, etc., which poses a serious threat to user privacy and security

[0018] After solving the problem of leaking the temporary public key of the transaction in the widely used dual-key hidden address protocol (DKSAP), the structure of hidden transactions and non-hidden transactions is consistent, and attackers cannot identify hidden transactions and hidden transactions, making it difficult to mine users. private information, which will greatly improve security

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