Restrictive blind signatures allow a recipient to receive a blind signature on a message not known to the signer but the choice of message is restricted and must conform to certain rules. Partially blind signatures allow a signer to explicitly include necessary information (expiration date, collateral conditions, or whatever) in the resulting signatures under some agreement with receiver. Restr...

It is well-known that blind signature schemes provide full anonymity for the receiving user. For many real-world applications, however, this leaves too much room for fraud. There are two generalizations of blind signature schemes that compensate this weakness: fair blind signatures and partially blind signatures. Fair blind signature schemes allow a trusted third party to revoke blindness in ca...

In recent years it has been trying that with regard to the question of computational complexity of discrete logarithm more strength and less in the elliptic curve than other hard issues, applications such as elliptic curve cryptography, a blind  digital signature method, other methods such as encryption replacement DLP. In this paper, a new blind digital signature scheme based on elliptic curve...

We examined haptic perception of the horizontal in visually impaired people. Blind people (late blind and congenitally blind), persons with very low vision, and blindfolded sighted individuals felt raised-line drawings of jars at four angles. They had to demonstrate their understanding that water remains horizontal, despite jar tilt, by selecting the correct raised-line drawing given four choic...

PURPOSE To link psychophysical thresholds for blind spot awareness and filling-in with early neural components that underpin these perceptions. METHODS Blind spot dimensions were quantified, after which an intrinsic stimulus (i.e., a rectangular bar of varying length centered within the blind spot) was used to determine blind spot awareness and filling-in for five subjects. Histologic examina...

As a special anonymous signature, the blindness of blind signatures makes it to play an important role in electronic commerce. Sometimes, we need a blind signature under the multiple signers. However, to the best of our knowledge, the research on the blind signer for multiple signers is much less. In this paper, we propose a novel blind signature scheme for multiple signers based on a new secur...

Restrictive blind signatures allow a recipient to receive a blind signature on a message not know to the signer but the choice of message is restricted and must conform to certain rules. Partially blind signatures allow a signer to explicitly include necessary information (expiration date, collateral conditions, or whatever) in the resulting signatures under some agreement with receiver. Restri...

the purpose of this study is to investigate the relationship between computer experience, social skills and blind students' self-efficacy in the secondary level through tehran city schools, so 129 students were selected among tehran blind schools with accessible sampling (36 females and 93 males). the results of regression analysis showed that computer experience and social skills can pred...