Bid opening in sealed-bid e-auction is efficient when a homomorphic encryption algorithm is employed to seal the bids and homomorphic bid opening is employed to open the bids. Such e-auction schemes are called homomorphic auctions. However, high efficiency of homomorphic auctions is based on an assumption: the bids are valid (e.g. within a special range). An undetected invalid bid can compromis...

Bid opening in e-auction is efficient when a homomorphic secret sharing function is employed to seal the bids and homomorphic secret reconstruction is employed to open the bids. However, this high efficiency is based on an assumption: the bids are valid (e.g. within a special range). An undetected invalid bid can compromise correctness and fairness of the auction. Unfortunately, validity verifi...

The AB Game is a game similar to the popular Mastermind. We study version of this called Static Black-Peg Game. It played by two players, codemaker and codebreaker. creates so-called secret placing color from set [Formula: see text] colors on each pegs, subject condition that every used at most once. codebreaker tries determine asking questions, where all questions are given once question possi...

Secret sharing method divides a secret into some components called shadow images where each shadow image looks meaningless. Based on this idea, we propose a simple secret image sharing scheme in this article. This scheme is based on bitwise operations. We have used matrix addition and subtraction processes for share generation and reconstruction processes respectively. This technique allows a s...

Recently,Wang et al. analyzed the security of two EPC C1-G2 compliant RFID authentication protocols, called RAPLT and SRP, and proved that these protocols are vulnerable against de-synchronization and secret disclosure attacks. The time complexity of their attacks were O(2). In addition, they proposed an improved version of SRP entitled SRP, for which they claim the security would be O(2). Howe...

For centuries the nations and principalities of the world have engaged in trading schemes to boost exports. Conquest, protection of domestic supply through tariffs and eroding domestic currency are all part of the historic policy harem. The United States has a foreign trade zone program. Who knew? FTZs evoke images of women locked inside a dark sweatshop in a jungle making hoodies for football ...

Recently,Wang et al. analyzed the security of two EPC C1-G2 compliant RFID authentication protocols, called RAPLT and SRP, and proved that these protocols are vulnerable against de-synchronization and secret disclosure attacks. The time complexity of their attacks were O(2). In addition, they proposed an improved version of SRP entitled SRP, for which they claim the security would be O(2). Howe...

In this paper we report on Keccak implementations that offer a high level of resistance against power analysis by using the technique of masking (secret sharing). In software, we show that two shares are required and if implemented carefully, sufficient. In dedicated hardware, three shares are required. We show that Multi-Gbit/s. throughput can be obtained with cores of area around 100 KGates. ...