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Information encryption method and information encryption device used for mobile terminal and mobile terminal

An information encryption and mobile terminal technology, which is applied to encryption devices with shift registers/memory, secure communication devices, and key distribution, can solve the problems of increasing the power consumption of mobile terminals and the large amount of calculation, so as to reduce power consumption and improve Efficiency, the effect of reducing the amount of calculation

Inactive Publication Date: 2016-07-20
NANJING COOLPAD SOFTWARE TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, due to the large amount of calculation of the traditional DES encryption algorithm, if it is used on the mobile terminal, the calculation amount will be large, which will increase the power consumption of the mobile terminal

Method used

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  • Information encryption method and information encryption device used for mobile terminal and mobile terminal
  • Information encryption method and information encryption device used for mobile terminal and mobile terminal
  • Information encryption method and information encryption device used for mobile terminal and mobile terminal

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Embodiment Construction

[0028] In order to be able to understand the above objectives, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

[0029] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited to the specific details disclosed below. Limitations of the embodiment.

[0030] figure 1 A schematic flowchart of an information encryption method for a mobile terminal according to an embodiment of the present invention is shown.

[0031] Such as figure 1 As shown, the inform...

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Abstract

The invention provides an information encryption method and an information encryption device used for a mobile terminal and the mobile terminal. The information encryption method comprises the steps that plaintexts requiring encryption are grouped in a way that each group includes 32 bits of plaintexts; initial permutation processing is performed on each group of data after grouping so that the order of all groups of data is arranged again, and secret key permutation processing is performed on preset 48 bits of secret keys so that multiple sub-keys are generated; product transformation processing is performed according to the multiple sub-keys and each group of data after initial permutation processing so that the data after transformation processing are obtained; and inverse initial permutation is performed on the data after transformation processing so that a ciphertext of 32 bits is obtained. According to the technical scheme, the burden of computation of data encryption can be obviously reduced under the premise of guaranteeing security of data encryption so that efficiency of data encryption can be enhanced, and power consumption of the mobile terminal in data encryption can be reduced.

Description

Technical field [0001] The present invention relates to the technical field of mobile terminals, and in particular to an information encryption method for mobile terminals, an information encryption device for mobile terminals, and a mobile terminal. Background technique [0002] Existing encryption algorithms include symmetric encryption and asymmetric encryption. DES (DataEncryptionAlgorithm, data encryption algorithm) is a symmetric cryptosystem in the cryptosystem. The DES algorithm is a 64-bit grouping of plain text, with a key length of 64 bits. The grouped plain text group and a 56-bit key are replaced or exchanged bit by bit. Method The encryption method of the ciphertext group. [0003] In the field of mobile communications, voice and video transmission require high real-time performance. Therefore, the security and fast display of the encryption algorithm is particularly important. However, because the traditional DES encryption algorithm has a relatively large amount ...

Claims

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Application Information

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IPC IPC(8): H04L9/06H04L9/08
CPCH04L9/0618H04L9/0816
Inventor 杨中云王海洋朱中华
Owner NANJING COOLPAD SOFTWARE TECH
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