A Blockchain-Based Sealed-Bid e-Auction Scheme with Smart Contract and Zero-Knowledge Proof

Algorithm 1

The sealed-bid auction smart contract.

	contract SealedBidAuction {
	struct Bid {
	bytes32 sealedBid;
	uint bidDeposit;
	}
	uint public biddingEndTime;
	uint public revealEndTime;
	function bid(bytes32 _sealedBid)
	public
	payable
	onlyBefore(biddingEndTime)
	{...}
	function open(uint[] _values, bytes32[] _secret)
	public
	onlyAfter(biddingEndTime)
	onlyBefore(revealEndTime)
	{...}
	function finish()
	public
	onlyAfter(revealEndTime)
	{...}
	}