Analysis and Improvement of Sequence Flaw for Yahalom Protocol and Its Variants
Dake He · Jisuanji gongcheng · 2008
This paper researches the Yahalom protocol and its variants,finds a sequence flaw existing in them and provides a kind of method to attack them by using the flaw.The Yahalom protocol has been revised several times,and no key-compromise problem is proved in the final Yahalom-Paulson protocol,but the Yahalom protocol and its variants still have the sequence flaw which has never been paid attention before.The Yahalom-Paulson protocol is improved from the angle of sequence.The improved Yahalom-Paulson protocol preserves the security of the original protocol,and can resist the attack caused by the sequence flaw.