与完整的公钥基础结构(PKI)相比，ltpa令牌比较容易配置。

The LTPA token is easy to configure compared to a full Public Key Infrastructure (PKI).

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证书就是一个熟悉的已签名安全令牌例子；它断言某人的身份和公钥之间的绑定关系。

A familiar example of a signed security token is an X.509 certificate; it asserts a binding between one's identity and a public key.

youdao

重放攻击（Replay attack）防护：每个发布的U-Prove令牌中还包含专门针对每个令牌的公钥，这只有验证方才知道。

Replay attack prevention: Each issued U-Prove token also contains a token-specific public key that is known only to the Prover.

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