可仲裁的公平认证码的新构造

New constructions of equitable authentication codes with arbitration

通过一类特殊函数的设计 ,给出构造具有仲裁的公平认证码的新方法 ,构造了一类具有仲裁的公平认证码 .构造中将消息、发放编码规则及收方编码规则分为几个部分 ,然后通过一个特殊函数进行作用 ,由仲裁人按照一定关系选定并分配编码规则 .利用这种方法构造认证码 ,灵活性强 ,状态数可以任意大 ,效率较高 ,可以根据不同需要设计不同的保护能力 .

A new method to construct equitable authentication codes with arbitration is given through designing a kind of special functions. A class of equitable authentication codes with arbitration is constructed. The messages, the transmitter′s encoding rules, and the receiver′s decoding rules in the construction are divided into several parts respectively. Then a special function operates on them. The arbiter chooses the encoding rules in some way and distributes the rules to the transmitter and the receiver. The method to construct authentication codes has great agility, the number of source states can be arbitrarily large, and the construction is of more efficiency. The security can be designed at any level according to different requirement. The resulted codes can meet the optimal code-bound.