证明你知道一些秘密——如身份证号码、通行证代码——却没有泄露自己任务一个比特的信息。这种游戏是简单却貌似矛盾的。但其重要性也是显而易见的,因为从信用卡号码到计算机口令,我们已是越来越依赖于签名这种保密电子传输。那么我们怎样才能传输一个签名,而不会导致向窃听者或其他利用这些信息企图假冒发送者的不法卖主泄密呢? Prove that you know some secrets - such as ID numbers, pass codes - but do not reveal a bit of information about your tasks. This game is simple but seemingly contradictory. But its importance is also obvious, as we have been increasingly dependent on signatures such as secure electronic transmissions from credit card numbers to computer passwords. How can we then transmit a signature without disclosing it to an eavesdropper or other unscrupulous seller using the information in an attempt to impersonate the sender?