The Efficiency of Encryption Algorithms in EAX Moder of Operation in IPSEC-based Virtual Private Networks for Streaming Rich Multimedia Data

The characteristics of encryption/decryption algorithms (ciphers) and modes of their operation (modes) have significant influence on security and performance of computer networks. The common modes of cipher operation such as ECB, CBC, OFB, CFB, CTR and XTS provide various levels of data confidentiality; however, those modes do not provide integrity and authenticity of encrypted data, and, therefore, do not efficiently protect data against non-authorized access and/or malicious modification/tampering. The newest generation of cipher modes – authenticated encryption with associated data (AEAD) modes – provides confidentiality, integrity and authenticity of data in a single cryptographic scheme. This paper presents the outcomes of research project on ciphers’ efficiency in one of the most promising AEAD cryptographic schemes – the EAX mode in IPsecbased mobile virtual private networks for streaming rich multimedia data.