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E-mail firewall with stored key encryption/decryption

  • US 20040054886A1
  • Filed: 09/29/2001
  • Published: 03/18/2004
  • Est. Priority Date: 11/03/1998
  • Status: Active Grant
First Claim
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1. A method for transmitting a message between a sender associated with a first e-mail firewall and a recipient associated with a second e-mail firewall, the method comprising:

  • intercepting a message from the sender intended for the recipient;

    searching an encryption directory for an entry associated with the recipient;

    retrieving an encryption key associated with a second firewall, the second firewall associated with the recipient;

    encoding the message with the encryption key of the second e-mail firewall to provide an encrypted message; and

    allowing the message to proceed through the firewall.

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