RADIUS attribute from rfc5090

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Digest-CNonce

This attribute holds the client nonce parameter that is used in
         the HTTP Digest calculation.  It MUST only be used in Access-
         Request packets.
   Type
         113 for Digest-CNonce
   Length
         >= 3
   Text
         This attribute includes the value of the cnonce-value 
         without surrounding quotes, taken from the HTTP-style request.

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