Password-Only Authenticated Three-Party Key Exchange with Provable Security in the Standard Model

Table 1

Security proof comparison.

Protocol	Idealized assumption	Adversary capability	Resistance to UDOD attacks†
Our protocol	None	Not restricted	Proven
GPAKE [21]	None	Restricted from corrupting parties	No [4]
NGPAKE [4]	None		Not proven
Lin and Hwang [7]	Random oracles	Not restricted	Not proven
Wu et al. [8]	Random oracles	Not restricted	Not proven

†Resistance to undetectable online dictionary attacks.