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Message encryption and decryption method and system

An encryption method and message technology, applied in transmission systems, digital transmission systems, and key distribution, which can solve problems such as non-compliance and increase of huge costs.

Pending Publication Date: 2022-02-11
CHINA ELECTRONICS GREAT WALL CHANGSHA INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These practices either add significant costs or are non-compliant

Method used

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  • Message encryption and decryption method and system
  • Message encryption and decryption method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] In this embodiment, the self-service equipment is taken as an example. The system of the self-service equipment is divided into: a front-end application system, a back-end front-end system, and a channel business management system. Based on the system distribution, this embodiment provides a message encryption and decryption method, which is applied to self-service equipment, including the following steps:

[0108] Step 1: The system administrator connects the encryption machine through the channel business management system to print the terminal master key envelope for a certain self-service device terminal, output the terminal master key envelope, and send the terminal master key returned by the interface of the encryption machine (the encryption machine Encrypted by the local master key) is stored in the terminal key table of the database, and the terminal master key is used for the encryption of the terminal working key.

[0109] Step 2: Import the terminal master k...

Embodiment 2

[0121] This embodiment provides a message encryption method, which is applied to a front-end application system, and includes the following steps:

[0122] 1-1: Send a key application request to the responder, and then obtain the terminal work key sent by the responder and import it into the password keyboard.

[0123] This embodiment is stated from the perspective of the front-end application system. It should be understood that the terminal work key obtained in this embodiment can be obtained by referring to the relevant statements in Embodiment 1. In other feasible embodiments, if there are other ways to obtain it, it is also feasible.

[0124] 1-2: Obtain message data containing sensitive data. In this embodiment, the sensitive data is customer information, that is, the message data to be encrypted is message data including customer information, such as ID card information, photos, and the like.

[0125] 1-3: Call the cipher keyboard, use the protection key MACKEYENKEY a...

Embodiment 3

[0129] Corresponding to Embodiment 2, this embodiment provides a message decryption method, which is applied to the back-end front-end system, and includes the following steps:

[0130] 2-1: The back-end front-end system receives the key application request from the front-end application system, and then calls the encryption machine to generate the terminal work key (the terminal work key includes: customer password encryption key PINKEY, MAC calculation key MACKEY The protection key MACKEYENKEY of the protection key, the protection key MSGKEYENKEY of the message encryption and decryption key MSGKEY, are all encrypted by the terminal master key) and returned to the front-end application system, and the terminal work key is saved to the database of the encryption machine at the same time, for Subsequent encryption and decryption, and MAC calculation.

[0131] 2-2: Receive the encrypted message data sent by the requesting end; wherein, the encrypted message data is obtained afte...

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PUM

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Abstract

The invention discloses a message encryption and decryption method and system, and the encryption and decryption process comprises the steps that a front-end application system carries out the encryption and MAC value calculation of message data containing client information through employing a protection key MACKEYENKEY and a protection key MSGKEYENKEY, so that a rear-end front-end system carries out the MAC value verification and decryption, and according to the response information of the rear-end front-end system, a protection key MACKEYENKEY and a protection key MSGKEYENKEY are utilized to perform encryption and MAC value calculation, so a front-end application system performs MAC value verification and decryption, and a set of encryption and decryption system for performing encryption and integrity verification on customer information and performing encryption and integrity verification on response information is formed, so the confidentiality and integrity of communication messages between the front end and the rear end of the self-service equipment are ensured, and particularly, the safety requirement of self-service equipment of which the password keyboard connection mode is serial port connection can be met.

Description

technical field [0001] The invention belongs to the technical field of encryption / decryption, and in particular relates to a message encryption and decryption method and system thereof. Background technique [0002] With the rapid development of the Internet, information security has become the focus of people's increasing attention. In order to ensure that the collected user data will not be leaked during the use of the system, a confidentiality measure for the transmission and access of these information should be implemented. And born. [0003] There are not only security requirements for Internet application systems, but also further requirements for the security of network data transmission between internal application systems in the financial industry. Because there are more and more self-service channel businesses in this industry, many traditional counter services are transferred to self-service equipment, and customers complete the business by themselves. In this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08
CPCH04L9/0822
Inventor 王天将唐嵩邓伟赵建青
Owner CHINA ELECTRONICS GREAT WALL CHANGSHA INFORMATION TECH