Is the source code for lib_crypto and lib_mmcau for the KW21x available?
The source code for lib_crypto is not public available.
The MMCAU software library is available at the following link: Crypto Acceleration Unit: CAU and mmCAU softw|Freescale
The implementation is in assembly language.
The function SecLib_CcmStar is referenced in the 802.15.4 MAC PHY Software Reference Manual Rev.6 but I can not find it in any source or compiled library of Beekit Rev 3.0.2. Is it available somewhere else?
No, the CCM* function implementation is not available. Please review my previous answer because I've updated it. The MMCAU is public available, I've posted the link so you can download it.
Particularly, I can't seem to find the source code for SecLib_CcmStar.