Properties of GKA Sample Clauses

Properties of GKA. A major goal of GKA protocols is to establish a confidential channel for group members. We use this goal to define the correctness of a GKA protocol while use the approaches to the goal to classify GKA protocols. Definition 2. (Correctness.) We say a GKA protocol Σ is correct if, when- ever it has been successfully terminated, for any instance Πıi and any of its ıUk ·, partners Πık and any message m in the message space of E(Ui ·), it holds that ı ı ı Ui Uk Uk Ui
Properties of GKA. A major goal of GKA protocols is to establish a confidential channel for group members. We use this goal to define the correctness of a GKA protocol while use the approaches to the goal to classify GKA protocols. Definition 2 (Correctness). We say a GKA protocol Σ is correct if, when- ever it has been successfully terminated, for any instance Πıi and any of its ıUk ı ı ı ·, partners Πık and any message m in the message space of E (Ui ·), it holds that D(E (m, ek i ), dk k )= m and D(E (m, ek k ), dk i )= m. Ui Uk Uk Ui Definition 3 (Asymmetric Group Key Agreement). A GKA protocol Σ is said to be symmetric if after being successfully terminated, it holds that dkıi = dkık Uk = sk. Else, Σ is said to be an asymmetric group key agreement protocUoil. |E m, ek | |E m, ek | A GKA protocol is nontrivial if ( ıi ) and ( ık ) are independent of | |

Related to Properties of GKA

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