Method for processing communication based on voice over internet protocol using bio key and apparatus for the same

A method for cryptographic communication method of the VoIP (Voice over Internet Protocol) in accordance with the present invention perform a voice call using a terminal supporting a voice call of a VoIP-based, the user the terminal, the previous in advance to perform a voice call the step of generating a bio-key using biometric information, and is stored; The process of the first terminal is set up request and a voice call session to the second terminal; The process of one another exchange and storage of bio-key stored in each terminal; The first terminal and the process of the second terminal to create a bio-session key using the shared key exchange, and start the SRTP (Secure Real-time Transport Protocol) session; And a step of the first terminal and the second terminal, to acquire the biometric information from the data received by each generating a restoration bio key, and performs user authentication by comparing the bio-key and to restore the bio key. VoIP, encryption, authentication, key, biometric information, BIO-key