...N) 、密钥等) 用户拥有什么(Something the User Possesses)( 令牌， 如ATM卡或智能卡等) 用户是谁(Something the User is)( 生物特征，如声音 识别、手写识别或指纹识别等) 8.2.1 基于用户知道什么的身份认证 最普通的身份认证形式是用户标识(ID) 和口 ...
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