METHOD AND APPARATUS FOR SECURELY TRANSMITTING AND RECEIVING DATA IN PEER TO PEER

摘要

A method and an apparatus for transmitting and receiving data peer to peer are provided to minimize a load of a system according to a data security by using a symmetric key algorithm in a data transmission and reception process, and using an asymmetric key algorithm in an initial process sharing a session key. A method for transmitting and receiving data peer to peer includes the steps of: requesting a session key to be used in a session between predetermined devices(202); recovering the session key by decoding the encoded session key included in a response to the request(206); encoding the data by using the recovered session key(207); and transmitting the encoded data(208). The session key is requested by transmitting a request token including a public key to be used in encoding of the session key at the predetermined device in the step(202). The encoded session key through a public key is decoded by using a private key corresponding to the public key in the step(206).