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Encryption, decryption and expansion method and device, encryption and decryption system, and terminal

An encryption method and encryption algorithm technology, which can be applied to encryption devices with shift registers/memory, transmission systems, digital transmission systems, etc., and can solve the problem that the efficiency of encryption methods needs to be improved.

Pending Publication Date: 2019-04-12
CHENGDU HAIGUANG INTEGRATED CIRCUIT DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The efficiency of existing encryption methods needs to be improved

Method used

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  • Encryption, decryption and expansion method and device, encryption and decryption system, and terminal
  • Encryption, decryption and expansion method and device, encryption and decryption system, and terminal
  • Encryption, decryption and expansion method and device, encryption and decryption system, and terminal

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Embodiment Construction

[0069] As mentioned earlier, the efficiency of existing encryption methods needs to be improved.

[0070] In the embodiment of the present invention, the round key required for multiple rounds of iterative operation of the encryption algorithm is determined, and the round key is used to perform multiple rounds of iterative operation of the encryption algorithm on the plaintext data to be encrypted. Wherein, the multi-round iterative operation of the encryption algorithm includes a single iterative operation performed by multiple rounds of iterations. When the round key is used to perform multi-round iterative operations of the encryption algorithm on the plaintext data to be encrypted, the encryption algorithm can be completed within one clock cycle. At least two rounds of single iterative operations, so the clock cycle occupied by multiple rounds of iterative operations of the encryption algorithm can be reduced, and the efficiency of the encryption method can be improved.

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PUM

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Abstract

The embodiment of the invention discloses an encryption, decryption and expansion method and device, an encryption and decryption system and a terminal, wherein the encryption method comprises the following steps: determining a round key needed by multi-round iterative operation of an encryption algorithm; using the round key to carry out multi-round iterative operation of the encryption algorithmon plaintext data to be encrypted, wherein the at least two rounds of iterative operation of the encryption algorithm are completed in one clock cycle. According to the technical scheme in the embodiment of the invention, the encryption and decryption efficiency is improved, and the attack resistance of the encryption algorithm is improved.

Description

technical field [0001] The present invention relates to the field of chip technology, in particular to an encryption and decryption, expansion method and device, an encryption and decryption system, and a terminal. Background technique [0002] With the rapid development of network technology and communication technology, the application of encryption methods is becoming more and more extensive. Encryption methods are not only used in network data transmission, but are also increasingly used in scenarios such as near-field communication. The application of encryption methods has gradually entered into daily life, for example, in payment and other scenarios. In some application scenarios, there are higher requirements on the efficiency of the encryption method. [0003] The efficiency of existing encryption methods needs to be improved. Contents of the invention [0004] The technical problem solved by the embodiments of the present invention is to improve the efficiency...

Claims

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Application Information

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IPC IPC(8): H04L9/06
CPCH04L9/0631H04L2209/125Y02D30/50
Inventor 周鹏魏家明赵凤海
Owner CHENGDU HAIGUANG INTEGRATED CIRCUIT DESIGN CO LTD
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