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PIN safety input method of full-touch-screen POS terminal

A secure input, full touch screen technology, applied in instruments, payment systems, payment architectures, etc., can solve the security threats to cardholders' funds and other issues, and achieve the effect of improving security and ensuring fund security.

Pending Publication Date: 2020-04-10
FUJIAN NEWLAND PAYMENT TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Due to the openness of the smart operating system and the continuous discovery of operating system vulnerabilities, if the cardholder enters the PIN on the touch screen controlled by the smart operating system, the smart operating system can directly obtain the PIN plaintext. Once the operating system is exploited, There is a risk that the cardholder's PIN will be stolen, and the security of the cardholder's funds will be threatened. Therefore, it is necessary to design a method for PIN security input on the full touch screen POS terminal

Method used

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] In order to realize the PIN security input of the full touch screen POS terminal, the technical solution of the present invention is that the full touch screen POS terminal adopts a dual CPU design, which are called application CPU and security CPU respectively. Both CPUs can control the touch screen, but the application CPU can only obtain...

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Abstract

The invention belongs to the technical field of POS terminal security. The invention relates to a POS terminal, in particular to a PIN safety input method of a full-touch-screen POS terminal. The method specifically comprises the following steps that S1, after a terminal is started, an application CPU controls a touch screen in a default mode, and when an application program requires to execute PIN input, the application CPU informs a safety CPU and sends parameters related to PIN input to the safety CPU; s2, the safety CPU receives a PIN input request sent by the application CPU, and immediately switches the touch screen control signal from the application CPU to itself; S3, the safety CPU circularly detects and processes PIN input on the touch screen, and when PIN input is finished, a PIN secret key preinstalled by the safety CPU is used for encrypting the PIN, and then the ciphertext PIN is returned to the application CPU, and a touch screen control signal is switched to the application CPU; and S4, the application CPU packages the ciphertext PIN acquired from the security CPU into transaction data and then sends the transaction data to a transaction background, so that one financial transaction is completed.

Description

technical field [0001] The invention belongs to the technical field of POS terminal security, and in particular relates to a PIN security input method for a full-touch screen POS terminal. Background technique [0002] With the wide application of intelligent operating system and full touch screen input, the current financial POS terminal is gradually adopting the design of intelligent operating system and full touch screen input. We usually call this form of POS terminal a full touch screen POS terminal. The main function of full touch screen POS terminals is still financial transactions, but its rich applications can also provide customers with more value-added services, so full touch screen POS terminals are gradually favored by the market. The mainstream smart operating system of the full touch screen POS terminal is the Android system. The cardholder’s PIN input method adopts a full touch screen input. The display screen of the full touch screen POS terminal displays a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q20/40G07G1/00G07G1/12
CPCG06Q20/4014G07G1/0018G07G1/12
Inventor 黄水香林国兵
Owner FUJIAN NEWLAND PAYMENT TECH
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