| 摘要 |
A system and method authenticates an e-mail message containing a code that may be sent as part of an advertising campaign. The code is a hashed hash result of a combination of the e-mail address to which the message was sent and a pass phrase for the campaign, along with an identifier of the campaign. To authenticate the message, the user supplies the user's e-mail address and the code and the system and method parses the code to identify the campaign identifier and hashed hash result, looks up the pass phrase using the campaign identifier, hashes the campaign identifier and e-mail address and hashes that hash result. If the hashed hash results match, the system and method indicates the message is authentic and otherwise, indicates the message is not authentic.
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