"DGAuth" server by DeleGate provides Digest Authentication functionality
remotely, over an experimental "DGAuth" protocol.
Example: DGAuth-DeleGate server and its client
Example: DGAuth-DeleGate server and its client on the same host
A DGAuth server receives a set of components to be used to calculate
digest for each application protocol, then return the digest, as follows.
HTTP user nonce realm method uri
APOP user nonce [realm] (not used currently)
501 syntax error
502 unknown user