Method and system of document transmission

Abstract

The invention discloses a document scrambling transmission system and a method. A transmitting terminal cuts the document to be transmitted into two parts that are an attribute description document and document content data. After the document content data is carried through slicing treatment, a cipher code flow is utilized to carry through scrambling treatment on the data slices; after the attribute description document is carried through the slicing treatment, the attribute description document slices and the data slices after being scrambled are carried through data packet sealing and then transmitted to a receiving terminal through a transmission network. Furthermore, before the slicing treatment is carried through on the attribute description document, the scrambling parameters that are not changed in the whole scrambling process are written in the attribute description document. The document transmission method and the system of the invention transmits the scrambled control words by a mode of ciphertext and transmits the document data by a scrambling data flow, thus leading the document transmission to have higher security.

Description

technical field [0001] The present invention relates to the technical field of data transmission, in particular to a method and system for file transmission. Background technique [0002] With the development of communication technology and various network technologies, there are more and more application requirements for file transfer, especially for larger files, the fragmented transfer strategy is usually adopted. When transferring files, the sending end first divides the file into multiple file fragments according to the file fragmentation strategy, and then transmits these file fragments to the receiving end through the transmission network, and the receiving end restores the fragments to complete files. [0003] As shown in FIG. 1 , an implementation principle of an existing file transfer method is described. [0004] First, the file distribution server splits the file, and after processing, the attribute description file and file content data are obtained; [0005] ...

AI Technical Summary

Problems solved by technology

[0010] However, since files usually contain directly identifiable information such as text content, such as text content that can be recognized directly by opening it with text editing software such as EDIT, if the file is transmitted in plain text during network transmission, there will be problems with information security. For example, once maliciously monitored, the content of the file transfer can be easily intercepted, so that a third party who has no right to receive and view the file content information can be obtained based on the intercepted data

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