User`s guide

Agilent PXT Wireless Communications Test Set
User’s Guide
131
Security
On: Ensures the following security-related procedures are taken care of automatically by the PXT:
• The AUTN parameter inside the DL EMM Authentication Request message contained in the
scenario file is overwritten with a value that is valid for the currently selected Authentication
Algorithm and derived from applicable settings in the Security Menu, including the K Value.
• Security Protected NAS Message containers are added to “plain NAS” messages contained in
scenario files after security activation. During a typical connection setup sequence, the EMM
Security Mode Command and EMM Attach Accept (which contains the Activate Default EPS
Bearer Context Request message) have these headers added.
It is not necessary to add the Security Protected NAS Message containers to
messages that are specified in scenario files, as this is done automatically.
• Inside Security Protected NAS Messages, the Security Header Type, the Message Authentication
Code and the Sequence Number fields are filled in automatically.
• If activated, NAS messages are ciphered after security activation. For example: Algorithm eea1 or
eea2 has been selected by the EMM Security Mode Command.
• Inside PDCP PDUs, the MAC-I field (the message authentication code) which is present on SRB
channels, is automatically filled in after security activation.
• If activated, PDCP PDUs are ciphered after security activation. For example: Algorithm eea1 or
eea2 has been selected by the RRC Security Mode Command.
Off: The above events do not occur automatically. Depending upon the capabilities of the UE under test, it
may be possible to manually add the correct headers inside scenario files, or not to enable security at all, by
skipping over the Authentication and Security Procedures.
Key Path: BSE > Mode Setup> More > Security
Authentication Algorithm
Sets the conformance test algorithm.
MILENAGE: Sets the normal authentication algorithm (Rijndael) as described in 3GPP TS 35.206.
Dummy: Sets the conformance test algorithm described in 3GPP TS 34.108.
Key Path: BSE > Mode Setup> More > Security
Key Option
Enables you to specify whether the key option contains OP or OPc.
OP: Enables you to manually enter the OP value.
OPC: Calculates the OPc value as defined in 3GPP TS 35.206 and is derived from the OP and K values.
This setting is only available if you have selected MILENAGE for the
Authentication Algorithm. above.
Key Path: BSE > Mode Setup> More > Security