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Method for realizing working mode of block cipher algorithm for WIA-PA security

A technology of block cipher algorithm and working mode, applied in the field of encryption and decryption, it can solve the problems of increasing the workload of the processor and complicating the control process, so as to meet the functions and requirements of information security and solve the complex control process.

Inactive Publication Date: 2016-07-20
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

That is, in an encryption and decryption or identity authentication process, the processor must intervene multiple times, which not only complicates the control process, but also increases the workload of the processor

Method used

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  • Method for realizing working mode of block cipher algorithm for WIA-PA security
  • Method for realizing working mode of block cipher algorithm for WIA-PA security
  • Method for realizing working mode of block cipher algorithm for WIA-PA security

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] See figure 1 Shown, among the present invention, block cipher algorithm operation mode (blockcipheroperationmode) control module is made up of following several parts:

[0028] ●Input port: The input port receives data signals, control signals, keys and initialization vectors arriving from the upper-level communication link. Through this port, it is possible to set the working mode, set the group size, load the key, load the initialization vector and load the data signal Wait for the operation steps;

[0029] ●Output port: through this port, the operation of reading data signal is realized, so that the encrypted and decrypted data flows into the next processing unit of the communication link;

[0030] ●AES-128 encryption and decryption module: realize data encryption and decryption operations;

[0031] ●Generation of data input variables and other c...

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Abstract

The invention relates to a method for realizing the working mode of a block cipher algorithm for WIA-PA security. The method comprises the following steps of: setting an encryption or decryption operation type; setting the working mode and the block input length; loading a secret key, initializing a vector, and setting a feedback cache variable; loading a data input variable, and generating an AES-128 encrypted / decrypted input x; performing AES-128 encryption / decryption operation of the input x to be encrypted / decrypted, and generating an output y; updating a feedback cache variable value; and generating a data output variable according to the operation type and the working mode. According to the invention, multiple working modes of the block cipher algorithm can be independently realized; the encryption / decryption function and the authentication function of a CCM* mode in an IEEE 802.15.4 protocol can also be supported; information security functions and requirements of a WIA-PA network can be satisfied; and thus, the disadvantages that the traditional upper control process is complex and the working load of a processor is heavy can be solved.

Description

technical field [0001] The invention belongs to the technical field of encryption and decryption, and specifically relates to a method for realizing a block cipher algorithm working mode control module applied to WIA-PA information security. Background technique [0002] The WIA-PA (Industrial Wireless Network Standard Technology for Industrial Process Automation) standard is formulated by the China Industrial Wireless Alliance for the field of process automation. It is a wireless network system for industrial process measurement, monitoring and control based on the IEEE802.15.4 standard. [0003] The WIA-PA security architecture is based on the security services of IEEE802.15.4. WIA-PA uses these security services to encrypt the transmitted data, and provides functions such as identity authentication and key management for devices connected to the network. The network layer and application layer defined by WIA-PA include this security system. [0004] IEEE802.15.4 security...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/06
Inventor 董策段茂强王剑谢闯杨志家
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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