VoIP encryption module for securing privacy
A VoIP encryption module was designed to prevent eavesdropping on Internet telephones communications and involved encoding/decoding the output data at the transmitter and receiver of the Internet telephone. To reduce the voice delay, a 128 bit AES was used and an RSA algorithm for an asymmetric encoding system was used during the key exchange, which is the first process of the encryption system operation. In order to test the speech quality in the encryption system, a Mean Opinion Score (MOS) value and R-value (E Model) Score were measured and resulted in values of 4.18~4.20 (Good) and 91.77~92.92 (Good), respectively.
voip encryption aes rsa internet phone