A Security Authentication Method of Digital Contents Using the Security Agent and Hash-Chain and Session Key in Wired/Wireless Networks

摘要

A security authentication method of digital contents using a security agent, a hash chain, and a session key in wired/wireless networks is provided to allow a user to decode and reproduce the digital contents in real time by performing efficient buffer scheduling. A security authentication method of digital contents using a security agent, a hash chain, and a session key in wired/wireless networks includes the steps of: receiving the contents registered by a contents provider by an agent module of a server(S_10); dividing the received contents into slices(S_20); encrypting the divided slices(S_30); requesting execution of the contents by a client(S_41); checking a license by an LAU(License Acquisition URL) of the contents(S_42); transmitting a DID hash value of the contents to the server(S_43); giving a new main header when the DID hash value of the contents is not identical to a DID value of the client(S_44); performing encryption of a public key including the DID value of the contents and the main header and transmitting the encrypted public key to the client when the DID hash value of the contents is identical to the DID value of the client(S_45); decoding the main header(S_46); transmitting a session ID and a CID(Contents ID) by the server through a SSL(Secure Socket Layer)(S_47); extracting the session ID and the CID by the client(S_48); obtaining a slice size of the main header by the client(S_50); decoding the contents by using the CID(S_60); and reproducing the contents through a dual buffer by the client(S_70).