| 摘要 |
A digital signature protocol generates a signature component using a hash of an encrypted message. The component and encrypted message form a signature pair tha t is forwarded to a recipient. The encryption message is used to retrieve the encrypt ion key at the recipient and authenticate information in the message. The signature pair ma y be applied to a data carrier as a bar code for use in mail delivery services. By ut ilizing a hash of the message, a reduced message length is achieved as individual signatur es are not required for each component of the message.
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