Patent ID: 8675863

Claim:
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 as a result of the comparison, wherein the encryption key is useful to decrypt transmissions between the mobile device and the WCN base station; wherein the correlation processor is configured to compare a challenge parameter and a challenge response parameter, and to find an encryption vector with the same challenge parameter and challenge response parameter, wherein the encryption vector contains the challenge parameter, the challenge response parameter and the encryption key for the mobile device.