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Passive System for Recovering Cryptography Keys

  • US 20110150211A1
  • Filed: 12/22/2009
  • Published: 06/23/2011
  • Est. Priority Date: 12/22/2009
  • Status: Active Grant
First Claim
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1. A system for use in collecting and decrypting encrypted wireless signals in a wireless communications network (WCN), comprising:

  • a first passive probe installed on a first interface and configured to monitor messaging possessing encryption keys;

    a second passive probe, wherein the second passive probe comprises a wireless network monitor (WNM) configured to monitor transmissions between a WCN base station and a mobile device; and

    a correlation processor operatively coupled to the first and second probes and configured to compare information received by each probe and to determine the encryption key, wherein the encryption key is useful to decrypt transmissions between the mobile device and the WCN base station.

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