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Method and system for the quick-speed and safe distribution of file based on P2P

A safe distribution and fast technology, applied in transmission systems, electrical components, encryption devices with shift registers/memory, etc., can solve the problems of complex implementation, no identity authentication, etc., to tap potential bandwidth, improve transmission speed, The effect of ensuring the security of file transfer

Inactive Publication Date: 2009-08-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It involves complex asymmetric encryption technology, and the file is divided and encrypted, and the user does not perform identity authentication in the process of obtaining the file encryption key
Therefore, the implementation is more complicated, and there are still certain security issues

Method used

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  • Method and system for the quick-speed and safe distribution of file based on P2P
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  • Method and system for the quick-speed and safe distribution of file based on P2P

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Embodiment Construction

[0035] The P2P-based fast and secure file distribution method and system of the present invention will be described in detail below through embodiments in conjunction with the accompanying drawings.

[0036] Such as figure 1 As shown, a P2P-based fast and secure file distribution method includes the following steps:

[0037] a. Plaintext file D is symmetrically encrypted with 128-bit key AES to form ciphertext file C before distribution and transmission, and the encryption key K is recorded and updated in the server file information table; ciphertext file C is made into a seed by ctorrent The file T is seeded and uploaded through the ctorrent running on the server, stored on the server, and the download service of the seed file and the ciphertext file is started. The file is distributed through P2P, and the P2P transmission method is BitTorrent. For data distribution and download, the BitTorrent server uses the open source BNBT, and the client uses the open source ctorrent. ...

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Abstract

The invention discloses a method for the quick-speed and safe distribution of the file based on the P2P,including that: a, a proclaimed file is in the symmetric encrypting to form an encrypted file before being distributed and transferred, and the encrypted file is made into a seed file, which is placed in the service end and distributed in the P2P way; b, the customer end logins according to the user information, the seed file is selected and downloaded in the P2P way, then the customer is in the identity verification; c, the service end distributes the encryption key of the encrypted file for the certificated customer; d, the customer end obtains the proclaimed file through the symmetric deciphering of the encryption key and the encrypted file. The invention also discloses a system for the quick-speed and safe distribution of the file based on the P2P, comprising a service end and a customer end, wherein the service end comprises a data-base, a seed file list server, a P2P download tracking server and a file uploading server, the customer end comprises a seed file reading module, a P2P downloading module and a deciphering module. The method can satisfy the requirement for safely and quickly distributing and transferring the file under the certain condition.

Description

technical field [0001] The invention relates to the field of transmission and distribution of computer electronic files, in particular to a method and system for fast and safe distribution of files based on P2P. Background technique [0002] Currently, there are two main means for the transmission and distribution of electronic documents. One is to use traditional HTTP / FTP download (collectively referred to as C / S download mode), users can log in to a certain website or FTP server, select the corresponding file to download, and achieve the purpose of file transmission and distribution; the other is to use P2P In the download mode, the user installs some P2P software on the computer in advance, and then uses these software to download files quickly. [0003] The biggest difference between the C / S download mode and the P2P download mode is that in the C / S mode, the user only communicates with the HTTP / FTP server, and each user is independent; but in the P2P download mode, eac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06H04L9/06
Inventor 董亚波曹晓东鲁东明
Owner ZHEJIANG UNIV
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