Android information encryption system and method based on national cryptographic algorithm

Abstract

The invention relates to an Android information encryption system and method based on a national cryptographic algorithm. The method is based on a hybrid cryptosystem combining an SM4 algorithm and anSM2 algorithm; the SM4 algorithm is adopted to encrypt the plaintext, the encryption efficiency is improved, the resource consumption is reduced, the elliptic curve encryption algorithm is adopted toencrypt the secret key for information encryption to ensure the security of the plaintext in the transmission process, and meanwhile, the security hash algorithm is adopted to perform hash comparisonon the plaintext before and after receiving and transmitting to verify the information integrity.

Description

technical field [0001] The present invention relates to the field of information security, in particular to an Android information encryption system and method based on a national secret algorithm. Background technique [0002] The issue of information security has always been one of the focal issues that the world continues to pay attention to. Whether information can be transmitted safely is related to everyone's own privacy and security. With the continuous development of modern communications and the continuous improvement of the performance of mobile terminals, mobile terminals such as mobile phones have entered the era of smart digital, communication through smart phones has become more and more widespread, and communication services have become more and more diversified. Information service is a widely used communication service. People send and receive personal and business information through information, but the transmission of information faces security problems,...

AI Technical Summary

Problems solved by technology

The disadvantage is that the key must be secretly distributed and exchanged in a secure manner, which makes the distribution of keys for symmetric ciphers often complicated and expensive;

[0006] (2) Using a single asymmetric cipher, the encryption efficiency is low

However, although the asymmetric encryption system solves the problem of key transmission in the symmetric encryption system, its encryption algorithm is more complicated and the encryption speed is slower, so it is not suitable for encrypting information with a large amount of data.

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