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Expansion card, encryption card, mobile terminal, communication data receiving and transmitting method and equipment

A mobile terminal, encrypted communication technology, applied in wireless communication, electrical components, security devices, etc., can solve the problem of easy cracking of communication data, and achieve the effect of reducing the risk of being cracked, not easy to crack, and improving security

Inactive Publication Date: 2011-08-17
北京钱袋宝支付技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the communication data between the mobile terminal and the base station in the above-mentioned prior art has a security problem that is easily cracked.

Method used

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  • Expansion card, encryption card, mobile terminal, communication data receiving and transmitting method and equipment
  • Expansion card, encryption card, mobile terminal, communication data receiving and transmitting method and equipment
  • Expansion card, encryption card, mobile terminal, communication data receiving and transmitting method and equipment

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Embodiment Construction

[0026] 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.

[0027] figure 1 It is a flow chart of Embodiment 1 of the communication data sending method of the present invention, such as figure 1 As shown, the method of the present embodiment includes:

[0028] Step 101. Use a first encryption algorithm to perform calculation processing on the first data to obtain a first key Key.

[0029] The first da...

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Abstract

The invention discloses an expansion card, an encryption card, a mobile terminal, communication data receiving and transmitting method and equipment. The expansion card is used for being electrically connected with a receiving and transmitting unit of the mobile terminal and an SIM card respectively. First encryption algorithm is adopted to perform algorithm processing on first data to obtain a first cryptographic key; the first cryptographic key is transmitted to the receiving and transmitting unit; and the first data comprises at least one of a cryptographic key Kc obtained from the SIM card and a response code SRES and a random number RAND obtained from the receiving and transmitting unit. The mobile terminal comprises the receiving and transmitting unit, the SIM card and the expansion card, wherein the expansion card is electrically connected with the receiving and transmitting unit and the SIM card respectively. The invention is beneficial to improving the transmission security of communication data between the mobile terminal and a base station.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to an expansion card, an encryption card, a mobile terminal, a communication data sending and receiving method and equipment. Background technique [0002] In mobile communications, the secure transmission of communication data between mobile terminals and base stations is crucial to the information security of user communications. [0003] In the prior art, in order to ensure safe transmission of communication data, the mobile terminal and the base station respectively use the encryption algorithm A5 to encrypt or decrypt the communication data. Before establishing communication between the mobile terminal and the base station, the mobile terminal needs to pass the authentication of the server on the network side. Specifically, each mobile terminal is equipped with a Subscriber Identity Module (Subscriber Identity Module, hereinafter referred to as: SIM) card, and the SIM card st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/04H04W12/06H04W88/02H04W12/041H04W12/40
Inventor 魏中华孙江涛
Owner 北京钱袋宝支付技术有限公司
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