Sealed-BID electronic auction without the third party

The previous electronic sealed-bid auction schemes usually have a common drawback, the third party (auction host) can conspire with a malicious bidder to leak all bidding prices before the opening stage. It results in the malicious bidder wining the auction with an optimal bidding price. This paper proposes a sealed-bid auction scheme without third party to get over this drawback. The proposed scheme adopts the ideal of the conditionally anonymous ring signcryption to guarantee the secure requirements of sealed- bid electronic auction.