No and there wouldn't be.
First off, eggdrop allready comes with MD5 hashing functions built in, however, they are not used for encryption, as a hash in not an encryption.
Eggdrops encryptions modules is as such. Encryption has a two way alogarythm, where you can encode using a KEY, and then decode the sctring using the same KEY.
It also has the ability to create a hash by using the input string as both the input and the KEY. Thus, unless you know the input string, you can't decrypt.
A hash function is a one way street. Once you are down it, there is no way back. There is no way to decrypt a hash.
There are currently 2 third-party encryption modules available for eggdrop available on the eggheads FTP server at
ftp://ftp.eggheads.org/pub/eggdrop/ in the modules section.