TECH-CVC-Chain-NewPKI.der   => Manufacturer CVC Chain for docsis3.1
TECH-CVC-NewPKI.der         => CVC docsis 3.1 official
TECH-CVC-Legacy-D.der       => CVC legacy PKI 6MHz (docsis 1.1/2.0/3.0)
TECH-CVC-Legacy-E.der       => CVC legacy PKI 8MHz (Eurodocsis 1.1/2.0/3.0)