A Three-Pass Protocol for Cryptography Based on Padding for Wireless Networks
André Gustavo Degraf Uchôa, Marcelo Eduardo Pellenz, Altair O. Santin, Carlos Maziero · 2007
This paper proposes an alternative cryptography protocol based on padding for wireless networks. It uses an orthogonal set of rotation matrices and a three-pass exchanging protocol to reach the encryption. The communicating parties do not need to know cryptographically nothing from each other in order to guarantee the communication privacy. The security of the algorithm is based on the continuous changing of the orthogonal matrix set used on the encryption process. The proposed protocol does not require any kind of keys pre- distribution. This feature is desirable for wireless ad hoc networks, where there is no predefined infrastructure, as required on classical secure channel encryption. The prototype shows that the proposal is feasible and can be advantageous when compared to One-Time Padding.