METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A VOICE DATA PACKET USING A CRYPTOGRAPH KEY BASED ON VOICE CHARACTERISTIC

摘要

PURPOSE: A method and apparatus for transmitting and receiving a voice data packet by using a cryptographic key are provided to certify a user in real time by using a public key and a private key. CONSTITUTION: A voice data input and output unit(201) transmits the voice data from a first terminal user to a control unit(203). The control unit transmits the determined encoding information to a voice data process unit(213). A voice feature extracting unit(219) extracts a voice feature value from voice data which is encoded in the voice data process unit. A public key/private key generating unit generates the private key and the public key of a first terminal by using the voice data of the user. A private key process unit(209) encodes the private key of the first terminal by using the public key of the second terminal.