- For other things named "Firefly", see Firefly (disambiguation).
Firefly is the name of the key exchange protocol, or "cooperative key technology", used in the STU-III secure telephone. Firefly is an NSA key distribution protocol based on public key cryptography. Firefly keys are distributed by NSA's Electronic Key Distribution System EKMS.
References
- RFC 2522
- Communications Security Custodian Guide, USAREUR Pamphlet 380-40
