This attribute holds the auts parameter that is used in the
Digest AKA calculation. It is only used if the
algorithm of the digest-response denotes a version of AKA
Digest . This attribute MUST only be used in Access-
118 for Digest-AKA-Auts
In Access-Requests, the RADIUS client takes the value of the
auts directive (auts-param according to) without surrounding quotes from the HTTP-style
request it wants to authenticate.