THE COLLABORATION EXCHANGE SYSTEM FOR SHIP PART'S ELECTRIC DRAWING BASED ON PEER TO PEER

摘要

A system for exchanging electronic drawings of ship parts based on a P2P(Peer-to-Peer) method is provided to efficiently inquire/search drawing information with minimized network load for data transmission by utilizing index information for related history without directly transmitting data in drawing exchange between a ship building company and the cooperated companies. A session state/security session managing module(310) manages an approval state of a user accessing a ship building company system and manages a security session by each user. A multiple file transmitting module(320) transmits data from an error time point after automatic recovery even if an error is occurred during file transmission while transmitting multiple files to the cooperated companies or each ship building company(210-240). An index information managing module(330) manages size of a transmitted file and integrates/manages index information for user history information among the data of the electronic drawing performed through an asymmetrical encryption/decryption algorithm by using the P2P method.