RADIUS attribute from rfc5090
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 Access-Challenge packets. Type 105 for Digest-Nonce Length >= 3Text 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.