Short message encryption method based on iOS system mobile terminal

Abstract

The invention relates to a short message encryption method based on an iOS mobile operating system, suitable for a GSM / 3G / 4G network, and comprises a short message editing / displaying module, a secret key management module, an authentication code module, an encryption and decryption processing module, an encrypted short message transmit-receive module and a database module. The short message editing / displaying module is used for editing an original short message and displaying a decrypted short message; the secret key management module generates the conversation secret key of current communication; the authentication code module verifies the identity of an addresser / addressee; the encryption and decryption processing module is used for performing encryption / decryption processing on a short message; the encrypted short message transmit-receive module is used for sending an encrypted short message to the GSM / 3G / 4G network, or receiving the encrypted short message from the GSM / 3G / 4G network; the database module preserves the encrypted short message and contacts. The short message encryption method employs a one-time pad short message encryption method, adds the identity information authentication code of an addresser / addressee, and guarantees end-to-end short message communication security.

Description

technical field [0001] The invention relates to the fields of information security, encryption algorithm, mobile operating system software development and the like, and particularly proposes a short message encryption method based on an iOS system mobile terminal. Background technique [0002] With the rapid development of modern communication technology, especially the advent of the mobile Internet era, people's work and life have become increasingly inseparable from smartphones. SMS is highly relied on as an efficient and convenient communication method, and its application fields are constantly expanding. For example, the SMS verification code is the main verification method for online banking, mobile banking and various mobile applications, which involves the user's property and information security. So we should strengthen the emphasis on the safe transmission of SMS. The iOS mobile operating system is currently one of the most popular mobile operating systems, with a...

AI Technical Summary

Problems solved by technology

Although this method realizes one-time encryption, it has the following defects: 1. The introduction of the private key center increases the complexity of the system; 2. When the private key center sends the secret key to the sending terminal, it is sent in plain text, which is easy to be obtained by an attacker ; 3. The security of the private key center is not high

Although this method has realized the encrypted transmission of short message, there are following defects: 1) the third-party secret key management server is introduced, the encryption speed is slow, and the secret key negotiation process is complicated; 2) the encryption algorithm mentioned in this method is simple and easily to crack

However, using a fixed secret key is easy to be cracked, and there is no authentication of the sender and receiver, which is easy to cause a man-in-the-middle attack

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