The adversarial structure of the American judicial system encourages critical reviews and challenges of forensic evidence. As a result, the discriminatory power of friction ridge skin impression evidence has been a prime target of debate among critics of the latent print discipline for years, the primary argument being friction ridge skin examination is neither scientif ically reliable nor lega...

Introduction. Students' evaluation of teaching is a major concern in higher education. In this regard, during the past 30 years hundreds of papers have been published which because of various grounds from valid, reliable to useless, such papers cannot be easily summarized. The present study investigated for two purposes, first was to out line opinions of two groups of advocates and opposites a...

Adding a temporal dimension to multimedia data is an interesting research topic, in particular with reference to the fruition of the cultural heritage. Time may be viewed either as valid-time or as transaction-time. In the rst sense, planning a virtual visit in time means working out a path that leads through the centuries taking into account the di erent historical contexts when the works of a...

Directed signature is the solution of such problems when the signed message contains information sensitive to the signature receiver. Generally, in many application of directed signature, the signer is generally a single person. But when the message is on behalf of an organization, a valid sensitive message may require the approval of several people. Threshold signature schemes are used to solv...

In universal designated verifier signature scheme, signature holder can designate the signature to any desired designated verifier. Only the designated verifier can believe that the signature holder does have a valid publicly verifiable signature. Attribute based encryption is a novel public key primitive in cryptography and attribute based signature can provide a powerful way for users to cont...

Server-assisted signature plays an important role in all kinds of applications in electronic commerce. It can be applied to the settings where a user employs public network servers to help her execute digital signature operations. In this paper, we discuss a problem of how to construct forward secure single-server, multi-server and thresholdserver assisted signature schemes using Bellare-Miner ...

this article concerned on the study of signature submanifolds for curves under lie group actions se(2), sa(2) and for surfaces under se(3). signature submanifold is a regular submanifold which its coordinate components are dierential invariants of an associated manifold under lie group action, and therefore signature submanifold is a key for solving equivalence problems.

In this paper, we propose a notion of contract signature used in e-commerce applications. We propose a contract signature scheme based on the discrete logarithm assumption. The contract signature scheme adopts a digital multi-signature scheme in public-key cryptography to facilitate fair signature exchange over network. This proposed solution allows multiple signers of a contract signature to e...