2967 search results - page 435 / 594 » Cryptology |
144
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CRYPTO
2005
Springer
15 years 11 months ago
2005
Springer
We describe two new public key broadcast encryption systems for stateless receivers. Both systems are fully secure against any number of colluders. In our first construction both...
162
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CRYPTO
2005
Springer
15 years 11 months ago
2005
Springer
Anonymous channels are necessary for a multitude of privacy-protecting protocols. Onion routing is probably the best known way to achieve anonymity in practice. However, the crypto...
123
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CRYPTO
2005
Springer
15 years 11 months ago
2005
Springer
We investigate methods for providing easy-to-check proofs of computational effort. Originally intended for discouraging spam, the concept has wide applicability as a method for co...
138
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CRYPTO
2005
Springer
15 years 11 months ago
2005
Springer
Abstract. Using a recent idea of Gaudry and exploiting rational representations of algebraic tori, we present an index calculus type algorithm for solving the discrete logarithm pr...
172
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CRYPTO
2005
Springer
15 years 11 months ago
2005
Springer
Since bit and string oblivious transfer and commitment, two primitives of paramount importance in secure two- and multi-party computation, cannot be realized in an unconditionally ...