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Dropbox, a popular cloud storage provider, pose several threats especially in terms of file security and unauthorized access. An Android and a web application which implemented Serpent cryptographic algorithm and One-Time Password (OTP) mechanism to secure files on Dropbox and a web application was built as a solution by utilizing Dropbox Application Programming Interface (API) and Bouncy Castle library...
In 2010, Lee-Chen proposed an authenticated multiple keys exchange protocol based on bilinear pairings. Lee-Chen claimed that their proposed protocol not only is secure to a forgery attack, but also provides perfect forward secrecy. However, this paper points out that Lee-Chen's protocol is still insecure to a forgery attack and cannot provide perfect forward secrecy.
Exhaustive key search is a simple and effective way to crack a cryptosystem, but it often causes large time and space consumption. From the original time-space trade-off method to the rainbow chain method, all of the algorithms are improvements of the exhaustive key search, whose objectives are to achieve the balance between the crack time and the storage memory. As the popularization of the strong...
As digital resources increasingly growing and the economic benefit of digital intellectual property rights being increasingly important, people has been increasingly emphasis on information security issues brought by the data remnants in storage devices. They try their best to prevent the potential risks. In this paper, we survey comprehensively related technologies, standards and trends of erasure,...
This paper introduces a new (t, n) secret sharing scheme for image encryption. The proposed method encrypts the secret image into two images as the same size of the original image, which one is the public image (called the encrypted image) and another is to be shared among n participants using a new secret sharing method based on the Shamir’s secret sharing. In the new secret sharing scheme, t (or...
A new method of realizing fingerprint authentication on Smartcard has been presented. Based on SOC, this method puts the pre-processing algorithm, which is the most time-wasting process, out of card. It not only decreases the complexity of realizing fingerprint authentication on Smartcard, but also ensures the security of fingerprint information due to the original fingerprint image has been transformed...
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