CAVE

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CAVE – Cellular Authentication and Voice Encryption

Developed by TIA committee TR-45.3, CAVE is a one-way algorithm that is an essential part of authentication and voice encryption procedures in CDMA/1xRTT systems. CAVE is used in authentication to generate the authentication signatures for global and unique challenges (AUTHR and AUTHU). CAVE also is used in the generation of secondary keys including shared secret data (SSD), voice privacy mask (VPM) key, and cellular message encryption algorithm (CMEA) key. Which of these signatures or keys is generated by CAVE depends upon the inputs used.

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