It USES a default signature algorithm, SHA1 with DSA, to create a self-signed certificate valid for 180 days.

它使用默认的签名算法(SHA1和DSA)创建一个带有自我签名的证书，有效期为180天。

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Signature Algorithm: Algorithm to be used to sign the self-signed certificate.

Signature Algorithm：签署自签名证书所使用的算法。

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Amazon's certificate tells us that we should use the RSA algorithm to check the signature.

Amazon的证书告诉我们应该用RSA算法来校验其签名。

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The certificate itself contains the issuer's name (for example, Chase Manhattan), a serial number, a signature algorithm ID, an expiration date, an employee's public key and unique identifiers for both the issuer and the employee.

CNN: Technology - E-Signature Act may drive demand for authentication technology