Ultra Secure Mode
Polycom®, Inc. 875
Media Encryption and Authentication
In compliance with UC_APL_SEC_0013, the RMX supports the Privacy Protocols:
● AES_CM_128_HMAC_SHA1_32
● AES_CM_128_HMAC_SHA1_80
System Flag
The Privacy Protocol selection is controlled by the SRTP_SRTCP_HMAC_SHA_LENGH System Flag. To
modify its setting, manually add it to system.cfg and set its value as summarized in the table below.
Self-signed Certificate - Creation
Field Value
Signature Algorithm SHA1
Issuer / Issued To Service Host Name
Both the Issuer and Issued To fields have the same values.
CN = host name of the service name
DC = Polycom
OU = Self Signed Certificate
O = Polycom RMX
Note: The value of CN is derived from the IP Network Service Name, while the
values of DC, OU and O are hard coded.
For a full description of these fields see RFC 5280.
Valid from Date of creation
Valid to Date of creation + 10 years
Subject (Common Name) Service Host Name
Public Key 2048 bits
