I shouldn't have to keep quoting myself...
If DISA & "main" ascii are not present in the save, then the save isn't partially decrypted.
If the Hashes don't match, then the hashes aren't decrypted. "ERROR: NO ACTIVE DIFI HASH MATCH"
If the DISA hash matches the wrong DIFI blob, then it isn't decrypted properly. "ERROR: ACTIVE BLOCK MISMATCH"