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对具有潜信道的Jan Tseng签名方案进行了安全分析 ,并指出Jan Tseng签名的第二种方案具有广义伪造性且不能抵制勾结攻击 .最后 ,给出了一种改进的具有潜信道的签名方案 .
The Jan Tseng signature scheme with latent channel is analyzed and the second scheme of Jan Tseng signature is shown to be general forgery and can not resist collusion attack.Finally, an improved sub-channel signature scheme is given.