2967 search results - page 398 / 594 » Cryptology |
147
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PKC
2007
Springer
16 years 3 days ago
2007
Springer
We give a short constant-size group signature scheme, which we prove fully secure under reasonable assumptions in bilinear groups, in the standard model. We achieve this result by ...
149
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PKC
2007
Springer
16 years 3 days ago
2007
Springer
Abstract. We introduce a new approach for cryptanalysis of key agreement protocols based on noncommutative groups. Our approach uses functions that estimate the distance of a group...
143
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SSC
2007
Springer
16 years 3 days ago
2007
Springer
In this short note we introduce two new sequences defined using the sum of digits in the representation of an integer in a certain base. A connection to Niven numbers is proposed ...
142
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SSC
2007
Springer
16 years 3 days ago
2007
Springer
Any span n sequences can be regarded as filtering sequences. From this observation, new randomness criteria for span n sequences are proposed. It is proved that the feedback funct...
166
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TCC
2007
Springer
16 years 3 days ago
2007
Springer
Abstract. We show a new protocol for blind signatures in which security is preserved even under arbitrarily-many concurrent executions. The protocol can be based on standard crypto...