The actual meaning of the digital signature should be understood as: "a person who claims to have such and such E-mail address certified this file, and it hasn't changed since then."
数字签名的实际意义应该被理解为：“声称有某某电子邮件地址的人证明了他有这个文件，并且此后此文件未被更改过。”
The actual meaning of the digital signature should be understood as: "a person who claims to have such and such E-mail address certified this file, and it hasn't changed since then."
数字签名的实际意义应该被理解为：“声称有某某电子邮件地址的人证明了他有这个文件，并且此后此文件未被更改过。”
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