Information secret keeping method applicable to point-to-point instant messaging

Abstract

The invention discloses an information secret keeping method applicable to point-to-point instant messaging. The method comprises the steps that an information sender and an information receiver establish point-to-point connection and then mutually exchange and store opposite public keys; the information sender encrypts information needing to be transmitted through adoption of a symmetric key generated by the information sender, thereby obtaining ciphertext information A; the information sender encrypts the symmetric key through adoption of the stored opposite public key, thereby obtaining the ciphertext information C; the information sender arranges and packages the ciphertext information A and the ciphertext information C to obtain an encryption data stream and sends the encryption data stream to the information receiver; and the information receiver decrypts the encryption data stream through adoption a private key of the information receiver and reads the information needing to be transmitted. The point-to-point transmission information can be encrypted in an asymmetric encryption and symmetric encryption combined mode, the security of a communication process can be ensured, and moreover, the complexity of encryption and decryption operation is simplified.

Description

technical field [0001] The invention relates to the technical field of instant messaging, in particular to an information security method suitable for point-to-point instant messaging. Background technique [0002] Instant messaging refers to services that can send and receive Internet information in real time, including e-mail, short message, QQ, WeChat and other communication tools. At present, most of the instant messaging methods use clear text transmission, and the transmitted information has no security protection means, which is easy to be intercepted and tampered with; a small number of instant messaging software provide means of information encryption, but they all adopt centralized information confidentiality means. Key security cannot be guaranteed, the security level of information encryption is low, it is easy to be cracked, the practical value is low, and leaks are prone to occur. Contents of the invention [0003] It is an object of the present invention to...

AI Technical Summary

Problems solved by technology

At present, most of the instant messaging methods use clear text transmission, and the transmitted information has no security protection means, which is easy to be intercepted and tampered with; a small number of instant messaging software provide means of information encryption, but they all adopt centralized information confidentiality means. Key security cannot be guaranteed, the security level of information encryption is low, it is easy to be cracked, the practical value is low, and leakage incidents are prone to occur

Images