This tool can generate a TSIG key value (base64) for you very easily. The key value complies with RFC2845. Secret Key Transaction Authentication for DNS (TSIG) is a secure method of authenticating clients making dynamic DNS update requests. The client application and the DNS server share a secret key value which is used to sign (HMAC-MD5) each update request. You can think of the key name as a user ID, and the key value as a password.

Licence Type:Freeware

Operating Systems Support:Win95,Win98,WinME,WinNT 4.x,Windows2000,WinXP,Windows2003

Download Link: TSIG Key Generator

Developers Homepage: JH Software