Secure Intermediary Caching in Mobile Wireless Networks Using Asymmetric Cipher Sequences Based Encryption

摘要

The use of proxies is commonplace in today's MANETs, where they are used for a huge variety of network services. However the main problem of using proxies is that the end-to-end nature of the communication is broken. This leads to some severe security problems. One of the main questions that arise is how content caching by intermediaries can be done when end-to-end security is required. In this paper, we will address the research issues of when and how end-to-end security, like confidentiality and authenticity can be preserved, in mobile ad hoc network communications, when having one or more cache proxies and router nodes in the data path. We propose a solution for an encryption scheme based on Asymmetric Cipher Sequence which allows to an intermediary nodes to cache data and convert the ciphertext for one person into the ciphertext for another person without revealing the secret decryption keys or the plaintext. Implementation results shows that we can simultaneously achieve high encryption through a wireless links.