Which encryption algorithm as supported by VPN1/WF1 uses a key length between 112-168 bits?

A.
FWZ-1

B.
DES

C.
CAST

D.
Triple DES

Explanation:

: ” CAST Cipher” is similar to DES. While the NG implementation of CAST uses a 40 bit key
length, the CAST algorithm supports variable key length anywhere from 40 to 128 bits. CAST has
a 64 bit block size, which is the same as DES. CAST is not as strong as DES, using comparable
key lengths. See Page 7.11 of CCSE NG Official Courseware. (VPN1-FW1 Management II NG
FP-1).