Method and system for securing e-mail transmissions

Details Method and system for securing e-mail transmissions Method and system for securing e-mail transmissions

2011-01-25

2011-01-25

Tran, Ellen (Department: 2433)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

Reexamination Certificate

active

07877594

ABSTRACT:
A method for frustrating unauthorized access to an electronic mail message having address, body and attachment information and being transmitted from a first computer to a second computer, including: at the first computer: detecting a request to send the message; encrypting the extracted body information; replacing the extracted body information with the encrypted body information; extracting the attachment information; encrypting the extracted attachment information; replacing the extracted attachment information with the encrypted attachment information; returning the message having the encrypted body and attachment information to the mail user application; and transmitting the message having the encrypted body and attachment information to a third computer; and, at the third computer: decrypting and re-encrypting the transmitted body information; decrypting and re-encrypting the transmitted attachment information; and, transmitting the re-encrypted body and attachment information to the second computer.

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