Group Key Agreement Protocols

• Skinny Tree (STR)

• Tree-based Group

Diffie-Hellman (TGDH)

r2, br2,

br2’

r3, br3

k2’, bk2’

k4 = K

r4, br4

k4 = K

r1, br1’,

br1’

r4, br4

k3’, bk3’

k3, bk3’

r2, br2,

br2’

k2’, bk2’

r1, br1

r3, br3,

br3’

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