This attribute holds a nonce to be used in the HTTP Digest
calculation. If the Access-Request had a Digest-Method and a
Digest-URI but no Digest-Nonce Attribute, the RADIUS server
MUST put a Digest-Nonce Attribute into its Access-Challenge
packet. This attribute MUST only be used in Access-Request and
105 for Digest-Nonce
In Access-Requests, the RADIUS client takes the value of the
nonce directive (nonce-value in ) without surrounding
quotes from the HTTP-style request it wants to authenticate.
In Access-Challenge packets, the attribute contains the nonce
selected by the RADIUS server.