Fair Contract Signing Protocol Without Random Oracles
Zufeng Fu · Jisuanji gongcheng · 2011
Aiming at the disadvantages of existed fair contract signing protocol based on short signature scheme without random oracles and q-strong Diffie-Hellman assumption,a new fair contract signing protocol with the off-line semi-Trusted Third Party(TTP) is proposed.The off-line semi-TTP intervenes into the protocol to assist to decrypt in case of trouble,at the end of the protocol run,the TTP does not obtain signatures from the participating party.Because this protocol is based on short signature,which needs low storage and little communication,it can be used in low-bandwidth communication and low-storage environments.