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What is IBC-CGA ? Using IBC to broke trust relations through a trusted third party (e.g. Key Distribution Center) IBC-CGA MN registers IBC-ID on KDC, get K+ and K- Get CGA: CGA = F (K+) Signature: CGA-Sign (K-, M) IBC-CGA parameter: containing an IBC-ID instead of a public key Trust: by verifying the CGA signature, the verifier can convince whether the sender is an entity trusted by the KDC as well as address ownership |