The signature component of the message (see Listing 6) provides the proof of possession of the Secret Key id.

消息的签名组件(见清单6)提供拥有Secret Key ID的证明。

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Instead, it is used to create a form of digital signature that is used to provide proof of possession of the Secret Access Key.

相反，它被用于创建某种形式的数字签名，而该签名用于证明拥有Secret Access Key。

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We refer to the Prover-computed response as the presentation proof; it is a cryptographic proof of possession of the private key corresponding to the presented U-Prove token.

我们使用验证方计算的响应作为表示的证据。它是拥有私钥的加密的证据，而私钥是与当前的U - Prove令牌相关的。

youdao

The only verification these sites do is of a credit card number claiming that the American courts have ruled possession of a credit card to be sufficient proof of adulthood.

ECONOMIST: Hard sell