Source-of-leakage detectable e-mail address forming, sending and detection
US8615657B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2012 |
| Grant date | Dec 24, 2013 |
| Priority date | — |
| Expiry date | Aug 9, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L51/48
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Provides e-mail address forming methods to know with certainty whether or not an e-mail address was leaked. A method includes: sending a receiver's identifier and a sender's identifier to a receiver's mail server; computing a value which is encrypted by the mail server with a secret key, the secret key being only possessed by the mail server, from the receiver's identifier, the sender's identifier, and a nonce issued by the mail server, and sending the value to a receiver; and forming an e-mail address (LD address) to be used by a sender who sends a mail to a receiver, by attaching a receiver's domain name to the encrypted value. Furthermore, the present invention has an e-mail address sending method, and en e-mail sending system which uses the e-mail address forming method to know with certainty whether or not the user of an e-mail address leaked the e-mail address.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.