Reasons why ioFTPD doesn't use OpenSSL:
http://www.inicom.net/forum/showpost...53&postcount=2
Other information:
http://www.inicom.net/forum/showpost...26&postcount=3
http://www.inicom.net/forum/showpost...64&postcount=2
It's amazing what you can find by searching the forum first.
Users on this forum have a very naive and rudimentary perspective on security. Most people here have some absurd idea that encryption cipher strength is everything. Realistically, 128bits is MORE than enough for data transfers.
Leaving your oh-so important encryption aside, think about how many other ways the security of your server can be compromised. Once you've taken care of the other problems, you can come back and worry about encryption cipher strength.