While the private portion of the certificate is used to create the signature, the password could also be stolen using social engineering or other similar techniques.

尽管在创建签名时要使用证书的私有部分，但是采用一些工程的方法或类似的技术也可以窃取密码。

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The trusted third party vouches for the public key and identifying information by issuing the certificate with its signature.

可信的第三方通过使用其自己的签名发出证书，为公开密匙和识别信息做证明。

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In order to verify that a public key certificate is legitimate, I need to verify the signature of the signer that issued it.

为了验证公钥证书是合法的，我需要检验发出该签名的签名者。

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In iOS 5, signing a certificate with an MD5 signature is not supported.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog

White seemed to agree, saying that he thought Burris could be appointed without his signature on the certificate.

CNN: Burris appointment valid, Illinois high court says

Nancy Erickson, the Senate secretary, initially rejected Burris' appointment Monday because his certificate of appointment was missing the signature of Illinois Secretary of State Jesse White.

CNN: Feinstein says Burris should get Senate seat