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Communication apparatus and secure module

A technology for communication devices and security modules, which is applied in the directions of security communication devices, security devices, wireless communications, etc., and can solve problems such as inability to determine the authenticity of communication content

Active Publication Date: 2012-08-08
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since non-authentic software can send fake communication content encrypted with a real cryptographic key to the external device, the external device may not be able to determine the authenticity of the communication content

Method used

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  • Communication apparatus and secure module
  • Communication apparatus and secure module
  • Communication apparatus and secure module

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0043] Figures 1A to 1C Exemplary communications are shown. Communication can be performed between the communication device and the center. Figures 1A to 1C The communication device 101 shown in each panel includes a security module 102 . The communication device 101 may also include a program (for example, an encryption communication program) for performing encrypted communication by using a cryptographic key (such as a cryptographic key K) in the security module 102 . In encrypted communication, the content of the communication is encrypted. For example, in an encrypted communication program, the content of communication to be sent is encrypted using the encryption key K, or the content of communication received is decrypted using the encryption key K. A key used for encryption and a key used for decryption may be different from each other.

[0044] Using the encrypted communication program, the communication device 101 performs encrypted communication with an external...

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Abstract

The invention provides a communication apparatus and secure module. The communication apparatus includes: a secure module; a first storage device, provided outside the secure module, to store a program for encrypted communication with an apparatus external to the communication apparatus using a cryptographic key (K) stored in the secure module; a detecting unit, provided in the secure module, to detect tampering of the program; and a setting unit, provided in the secure module, to disable the encrypted communication when the tampering of the program is detected.

Description

technical field [0001] Embodiments disclosed herein relate to communication devices and security modules. Background technique [0002] Specifications and software structures of terminals such as mobile terminals are kept secret. The security of confidential information, such as authentic cryptographic keys, can be ensured by using an integrity-guaranteed security module such as a tamper-proof module. One example of a security module is a Subscriber Identity Module (SIM) card. [0003] For example, in order to communicate with a terminal, the external device determines whether the received communication content is encrypted with an authentic encryption key whose integrity is ensured, thereby determining whether the communication content is authentic. [0004] The related art is disclosed in Japanese Laid-Open Patent Publication No. 2004-129227 and Japanese Patent No. 4408601. [0005] For example, since the specification or software structure of a smartphone terminal can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/04H04L9/32G06F21/12G06F21/14G06F21/64G06F21/72H04W12/03H04W12/122
CPCG06F2221/2153G06F21/123G06F21/52G06F21/14G06F12/14H04L9/10G06F21/57G06F21/51H04L63/0428G06F21/64
Inventor 小桧山清之
Owner FUJITSU LTD