A method and system for secure transmission of picture messages based on mobile devices

Abstract

The invention discloses a picture message safe transmission method and system based on a mobile device. Accordingly to the method, firstly, the information input by a sending terminal is firstly intercepted and whether the information is a picture is determined; if the information is not a picture, the message is not encrypted; if the information is an image, the following steps are performed on the picture: the input picture is encrypted to obtain an encrypted file, and the encrypted file is sent to a self-built server; at the same time, a blank picture corresponding to the input picture is generated and the blank picture is sent to an instant messaging server; the receiving terminal receives and displays the blank picture sent by the instant messaging server; when the blank picture received by the receiving terminal is clicked, the encrypted file is downloaded from the self-built server; and the downloaded encrypted file is decrypted to display the input picture. The invention also discloses a corresponding system. The method and system of the invention can ensure the safety of the picture transmission process and avoid the situation that the encrypted file of the picture can notbe identified and the transmission fails.

Description

technical field [0001] The invention belongs to the field of communication, and in particular relates to a method and system for secure transmission of picture messages based on mobile equipment. Background technique [0002] With the continuous development of Internet technology, the recent instant messaging tool has become an indispensable communication tool for Internet users in their daily work. For example, WeChat, as the most typical instant messaging tool, is a free application that can provide instant messaging services for smart terminals. It supports cross-communication operators and cross-operating system platforms to quickly send free voice messages, videos, and pictures via the network. and text services. In the interaction of such huge data, picture messages account for a considerable percentage, so ensuring the safe transmission of picture messages is an important issue that needs to be solved urgently. [0003] In addition, because the Internet is a develop...

AI Technical Summary

Problems solved by technology

When the soft encryption method is used to encrypt the picture message, although the security performance of the encrypted transmission data is improved to a certain extent, since the encryption and decryption operation of the picture is performed in an open operating environment of the terminal, the operation process is easily tracked by other Trojan horses or viruses , so that it is easy to illegally obtain the key

In addition, general instant messaging servers filter the content sent by users, and unrecognizable format codes will not be sent, so encrypted pictures are easily discarded by instant messaging servers and cannot be sent successfully

The use of mosaic or grayscale processing is not very safe

Images