Method and system for encrypting/ decrypting IP (Internet Protocol) short messages based on SMS (Short Messaging Service) over IMS (IP Multimedia Subsystem)

Abstract

The invention provides a method for encrypting / decrypting IP short messages based on SMS over IMS; the method comprises the steps: when LTE (Long Term Evolution) users send and receive IP short messages in the IMS region in an SMS over IMS manner, the short messages are encrypted short messages, the content parts of which are ciphertexts; an IP short message encrypting and decrypting centre of the users finishes the encryption and decryption at the network side and then returns the IMS core network to finish the follow-up route at the end of the encryption and decryption. The corresponding technical solution is provided by analyzing the technical feature of the SMS over IMS and deeply analyzing key problems; the coordination of user registration management and user's secret key in the registration process is realized by the iFC (Initial Filter Criteria) triggering mechanism of the IMS and the encrypting and decryption functions of the short message contents in the IP short messaging service process are realized; the coordination of the terminal side to the encrypted and decrypted secret key is realized and the function of the short message content from encryption / decryption to representation on user's interface is realized by developing new terminal application software; the scheme can be implemented without modifying the present network equipment and the cost of operation and maintenance is lower.

Description

technical field [0001] The invention relates to a method and system for encrypting and decrypting IP short messages based on SMSoverIMS, and belongs to the technical field of communication. Background technique [0002] Since Snowden broke the US "Prism Project" in 2012, network security has attracted unprecedented attention, and the outbreak of Apple's "Privacy Gate" has once again aroused people's attention to information security. [0003] At present, there are three hidden dangers in the security of mobile communications: [0004] 1) Network eavesdropping, signaling messages are intercepted during transmission; [0005] 2), air interface eavesdropping, intercepting wireless signals, PN code capture, knowing the channel scrambling code of the target user, intercepting signaling and voice channels; [0006] 3) Terminal theft, such as the terminal being implanted with a Trojan horse to steal short messages and other information. [0007] So with the development of mobile...

AI Technical Summary

Problems solved by technology

[0006] 3) Terminal theft, such as the terminal being implanted with a Trojan horse to steal short messages and other information

[0008] However, the implementation of hardware encryption will undoubtedly increase the cost. With the development of smart phones, the encryption of information at the terminal can be implemented through software, so that your information will not be stolen by people with ulterior motives.

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