A device for decrypting S1MME interface data and a decryption method thereof

A technology of interface data and data, which is applied in the field of interface association, can solve the problems of difficult decryption and low decryption rate, and achieve the effect of meeting practical applications, facilitating processing, and avoiding processing bottlenecks

Pending Publication Date: 2019-01-25
SHANGHAI EMBEDWAY INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a kind of device and decryption method thereof for S1MME interface data decryption, under the situation that EPC core network S1MME interface opens encryption, provide a kind of device based on the S1MME interface data decryption of multi-interface association, this device It can support all the encryption algorithms of the S1MME interface defined by 3GPP, and can realize the effect of real-time decryption and output of full data in large traffic and multi-concurrency scenarios, and solve the technical problems of difficult decryption and low decryption rate in existing technologies

Method used

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  • A device for decrypting S1MME interface data and a decryption method thereof
  • A device for decrypting S1MME interface data and a decryption method thereof

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with accompanying drawing, as figure 1 , figure 2 As shown: a device for decrypting S1MME interface data in this embodiment, which uses the EPC core network 104 as the access network, and includes a front-end access device 101, an associated decryption device 102, and a back-end shunt device 103, and the front-end access device 101 , the associated decryption device 102 and the back-end distribution device 103 are all provided with at least one GE / 10GE port, and the front-end access device 101, the associated decryption device 102 and the back-end distribution device 103 are directly connected through at least one pair of optical fibers, and the optical fiber carries out data For transmission, the front-end access device 101 is provided with an S1MME logical interface 105, an S11 logical interface 106, and an S6A logical interface 107. The front-end access device 101 accesses the mixed traffic data ...

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Abstract

The invention discloses a device for decrypting S1MME interface data and a decryption method thereof. The device includes a front-end access device, an associated decryption device, and a back-end shunt device. The front-end access device useS MME as the unit to convert S1MME, S11, S6A logical interface data load is shared to an intermediate associated decryption device, the associated decryptiondevice associates data from three logical interfaces, The encrypted S1MME logical interface data is decrypted by extracting the secret key and encryption algorithm. The decrypted data is marked with IMSI number and forwarded to the back-end splitter device. The back-end splitter device splits the data to different output ports according to the association result of the associated decryption device. The invention supports all encryption algorithms of the S1MME interface defined by 3GPP, and can flexibly adjust the number of associated decryption devices under the condition of large flow rate and multi-concurrency, so as to realize the real-time decryption output of the total amount of data.

Description

technical field [0001] The present invention relates to a device for decrypting S1MME interface data and a decryption method thereof, and relates to the field of network traffic bypass analysis and monitoring of LTE-EPC core network, especially when S1MME enables encryption, through the multi-logic interface association of EPC core network A method and device for decrypting data on an S1MME interface to restore the original plaintext data packet. Background technique [0002] As the fourth-generation mobile communication technology, 4G can quickly transmit voice, text, video and image information, and has incomparable advantages. The packet core network EPC of LTE is based on an all-IP structure, control and bearer are separated, and the network structure is flat. The MME of the core network is an important network element that processes signaling, and its S1MME interface is an important communication interface between the ENB and the MME. [0003] In LTE, because the ENB ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/24H04L12/26
CPCH04L41/14H04L43/0888H04L47/125H04L63/0428
Inventor 王聪
Owner SHANGHAI EMBEDWAY INFORMATION TECH
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