The recipient of the payload can validate the digital signature using the public key of the sender.

有效载荷的接收者可以使用发送者的公开密钥验证数字签名。

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The only way to guarantee that the public key signature is from the owner is for the owner to hand you the key on a disk, in person.

保证公共密钥签名来自所有者的惟一方法是，密钥的所有者亲自把磁盘上的密钥交给您。

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Because a digital signature is based on public key cryptography, it generally takes much more time to compute a digital signature than a MAC.

由于数字签名是建立在公用密钥密码术基础上的，因此计算一个数字签名所花的时间往往要比计算一个mac长得多。

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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