AES 80-Bit Authentication Support
Cisco Unified Communications Manager supports Advanced Encryption Standard (AES) with a 128-bit encryption key and a 32-bit authentication tag used as the encryption cipher. With this release, the AES 32-bit authentication tag is enhanced to an 80-bit authentication tag used as the encryption cipher on Music On Hold (MOH), Interactive Voice Response (IVR), and Annunciator. This enhancement helps customers using 80-bit authentication tag to make the Secure Real-Time Transport Protocol (SRTP) calls over a SIP line and SIP trunk.
For more information, see the Encrypted Phone Configuration File Setup chapter in the Security Guide for Cisco Unified Communications Manager.