System and method for secure three-party communications

  • US 7,869,591 B1
  • Filed: 02/16/2007
  • Issued: 01/11/2011
  • Est. Priority Date: 03/23/2001
  • Status: Active Grant
First Claim
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1. A system for securing information, comprising:

  • (a) a first port configured to receive encrypted information associated with a first set of cryptographic keys;

    (b) a second port configured to receive a portion of a set of transcryption keys from a key management system, derived at least in part from a first portion of the first set of cryptographic keys and a first portion of a set of session keys, adapted to transcrypt the encrypted information from a form associated with the first set of cryptographic keys to a form associated with a second set of cryptographic keys and the set of session keys, the received first portion of the set of transcryption keys conveying insufficient information to decrypt the encrypted information and to comprehend the transcrypted information, a second portion of the second set of cryptographic keys and a second portion of the set of session keys being required to comprehend the transcrypted information; and

    (c) a processor configured to transcrypt the received encrypted information from the first port into the transcrypted information dependent on the portion of the set of transcryption keys received from the second port, without either requiring or employing information sufficient to decrypt the encrypted information or to comprehend the transcrypted information.

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