M2M Service Bootstrap procedure between the D/G M2M Node (see clause 8.3) containing D/GSCL, MSBF and MAS (via Network M2M Node) is the mechanism by which Service Capability Layer credentials, such as permanent identifiers and the M2M Root Key are provisioned to D/G M2M Node (see clauses 7 and 8) and M2M Authentication Server (MAS). These credentials are used for mutual authentication and secure communication between the D/GSCL on the D/G M2M Node and M2M Service Capability Layer in the network (NSCL), as well as authorization to access specific M2M services, and related accounting/billing functionality. "M2M Service Connection procedure" between D/G M2M Node and Network M2M Node is the mechanism by which: • mutual authentication of the mId end points and key agreement is performed. Security keys are generated as per the key hierarchy described in clause 8.2.2; • a M2M Service Connection session is established between mId end points that is optionally encrypted based on the agreed key. "SCL Registration" procedure of D/GSCL with NSCL is the mechanism by which: • the D/GSCL on the D/G M2M Node registers with a M2M Service Capability Layer in the network (NSCL) in order to be able to use M2M services offered by the NSCL. A pre-requisite for D/GSCL Registration with M2M NSCL is a M2M Service Connection that has been established by performing the "M2M Service Connection procedure". "Application Registration" procedure is the mechanism by which: • the D/GA on a M2M Device or M2M Gateway register locally with the D/GSCL in order to use M2M services offered by the D/GSCL. The same holds for registration of NA on the NSCL or for registration of DA of a D' M2M Device to the NSCL. For the purpose of application-level authentication and encryption, application specific keys can be generated optionally according tothe key hierarchy described in clause 8.2.2
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