This is copied from the Flexhub site. I do not know if this is actually implemented by anyone.

Providing hashed and salted passwords for NMDC, no more sending of plaintext passwords.

Technique for salting and hashing is identical to ADC. The hub provides the salt with $GetPass, the client adds the salt to the pass and hashes it, converts it to base32 and sends it with $MyPass.

C: $Supports SaltPass
H: $Supports SaltPass
C: $ValidateNick
H: $GetPass
C: $MyPass