POS machine data encryption method and device

Abstract

The invention discloses a POS machine data encryption method, and the method comprises the steps: encrypting transaction information and identification information of a POS machine, and transmitting the encrypted transaction information and identification information to a UnionPay background management system, the transaction information comprising a user account, a password, merchant information, commodity data and time data of the POS machine; the identification information is used for determining a key and encrypting the transaction data; the encryption method is based on an improved AES and RSA mixed algorithm, and the transaction data with high privacy density of the POS machine is enhanced and encrypted through a mixed algorithm combining an improved AES algorithm combining an AES algorithm and a timestamp technology and an RSA algorithm enhancing prime number judgment. The invention further provides a POS machine device. The data encryption method of the POS machine is improved, the data encryption time is shortened, the complexity is reduced, and meanwhile the security quality of encryption is guaranteed.

Description

technical field [0001] The invention relates to the technical field of financial data encryption, in particular to a POS machine data encryption method and device. Background technique [0002] POS machine is a kind of sales terminal with non-cash settlement function. Because it involves bank card transactions, there are high requirements for its security performance. It is necessary to ensure that the important data in the POS machine will not be stolen. Wireless POS realizes an efficient, fast and safe way of consumption, so that the use of POS can not be limited by wired communication, and resolves the difficulty or impossibility of card consumption. Any place with a mobile phone signal can swipe the card to pay. The use of this new technology greatly facilitates cardholders, improves the card-holding environment, effectively promotes the development of bank card business, and frees customers from the pain of traveling between banks and the insecurity caused by carrying a...

AI Technical Summary

Problems solved by technology

[0005] 1. Due to the short key length of the DES algorithm and the enhancement of computer computing power, the key length of the original DES password becomes easy to be cracked by violence; the 3DES algorithm is designed to provide a relatively simple method, that is, by increasing The key length of DES is used to avoid similar attacks, which is more secure than the original DES algorithm, but its security performance is still limited

[0006] 2. Using other complex algorithms to encrypt and transmit data has low operation speed, which affects the data transmission efficiency of POS machines and limits its use

Images