Forms authentication not only writes the user's name into the cookie, it adds a message authentication code (a hash formed from the cookie and a secret value that only the Web server knows).

表单验证不仅将用户名写入Cookie，它还写入信息验证码(一种来自Cookie和只有服务器知道的密值的散列形式)。

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If the bank finds that the user answers in short order all its many questions correctly, it will transfer to his laptop a cookie which includes an encrypted token, which further includes a key and a "hash number".

ECONOMIST: Fake ID cards