Short message encryption method based on SM9 algorithm

Abstract

The invention provides a short message encryption method based on an SM9 algorithm, and the method is used for encrypting and decrypting short message communication between transmitting end equipmentand receiving end equipment. The method comprises the following steps: storing keys used by the transmitting end equipment and the receiving end equipment in the encryption and decryption process of the short message communication in TEEs (Transfer Encryption Equipment) in main processors of respective equipment. On the basis of the normal short message service, the safety encryption technology which combines the SM9 algorithm and the trusted execution environment TEE is used for performing encryption protection of the short message data between mobile phones, and guarantees the safety of theshort message data. The method also has the advantages of algorithm strength, security of algorithm keys and convenience of identity authentication at the same time.

Description

technical field [0001] The invention relates to the field of information security, in particular to a short message encryption method based on the SM9 algorithm. Background technique [0002] With the rapid development of mobile communications and the continuous popularization of smart mobile terminals, SMS has become a mainstream way of information exchange in people's daily life. However, people are enjoying the convenience brought by SMS, but inadvertently ignore the potential safety hazards it produces. For example, when people use text messages to transmit business information, personal privacy, and use text message verification codes for account login and transaction payment, criminals can obtain user information by monitoring and stealing data transmitted by text messages, which can be read locally through malicious apps or Trojan horses. SMS information stored in plain text. [0003] Traditional SMS encryption technologies mostly use symmetric encryption algorithms...

AI Technical Summary

Problems solved by technology

[0003] Traditional SMS encryption technologies mostly use symmetric encryption algorithms (the encryption and decryption keys are the same) for encryption and decryption, and the keys are generally stored in the application layer. Once the mobile terminal is implanted with Trojan horses or malware, attackers can easily obtain the keys , then this SMS encryption technology is no longer safe

[0004] In addition, traditional SMS encryption technology uses digital certificates for identity authentication, which requires certificate issuing authority CA, certificate issuance and query, and certificate verification calculation, which greatly increases the implementation cost of encryption technology and reduces system operation. efficiency

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