The support includes encrypted archives.
The RAR Format package is exposed to the SDK:
from Pro.Core import * from Pkg.RAR import * def parseRARArchive(fname): c = createContainerFromFile(fname) if c.isNull(): return obj = RARObject() if not obj.Load(c) or not obj.ParseArchive(): return n = obj.GetEntryCount() print(n) for i in range(n): entry = obj.GetEntry(i) if entry == None: break # skip directories if not obj.IsFile(entry): continue print("file name:", entry.filename) # retrieves the file data as NTContainer fc = obj.GetEntryData(entry)