Impact Transport Layer Protocol Performances to the Encrypted Traffics

Abstract

Transport layer protocols either reliable or unreliable are prone to packet losses. Data transmitted by these protocols are either encrypted or not. The encrypted or compressed traffics are sensitive to losses. Often packet losses lead to failure in extracting the encrypted messages. This paper evaluates the impact of those packet losses on transport layer protocols to the encrypted traffics. The NS-2 simulator is employed and some encryption algorithms are examined. As results, the percentage of successful decryption on TCP is higher than UDP. The higher the packet loss rates the lower the decryption rates. 3DES is more immune to packet losses than Rijndael and Arcfour. In average, it decrypted the encrypted messages 0.38% higher than Rijndael and 0.12% higher than Arcfour.