1. Geoencryption Demonstration Di Qiu, Sherman Lo, Per Enge August 15 2007

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7. Layers of Security Ones who can receive the encrypted file Conventional Cryptographic Algorithms Ones who have the random key Geoencryption & Signal Authentication Ones who have the navigational receiver & locate at user’s location 3400 m 2 /153,295,000 km 2 = 2.2 x 10 -11

8. “Parking Lot” Attack TOA

9. Data Collection 72.34 m

10. Encryption & Decryption Software

11. Geoencryption Parameters Status: Encoded or Not Plaintext = information to encode Select what stations & parameters to use – Quantization level Data (date) to use Location to use Resulting encrypted data Geo lock key