| 摘要 |
A method and system is described to authenticate the sender of digital content, by combining the functionality of a key distribution server with the one of a mail server. This system allows the distribution of a person's public key or keys by simply knowing that person's email address. Senders upload a public encryption key onto their account on a mail server and use the corresponding private key to digitally sign outgoing digital content. Recipients verify the digital signature of incoming digital content using the sender's public key, which can be easily downloaded from the mail server and account coordinates specified by the return address field of the digital content.
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