Research Article
On Constructing Dynamic and Forward Secure Authenticated Group Key Agreement Scheme from Multikey Encapsulation Mechanism
Table 1
Efficiency comparison of GAKE construction from different
KEMs.
| Scheme | Assumption | Initiation | Key exchange performance for participants | SM | MSM |
Key size pk/sk | Computation | Key calculation |
Total ≈SM | Total KDF/Hash | SM | MSM | KDF/Hash | SM | MSM | KDF/Hash |
| PSEC [7] | CDH | 1 | — | 2/1 | | — | | | — | | | | ELGamal [5] | CDH | 1 | — | 2/1 | | — | | | — | | | | CS98 [8] | DDH | 1 | 2 | 5/5 | | | | | | | | | HK07 [9] | HDDH | 3 | — | 4/3 | 2 | | | — | | | | | HTAS-CKS [10] | HDDH | — | 3 | 5/5 | 2 | | | | | | | | HTAS-HK [10] | HDDH | 2 | — | 4/4 | 2 | | | — | | | | |
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