255 search results - page 20 / 51 » Security of Encryption Schemes in Weakened Random Oracle Mod... |
IJNSEC
2008
13 years 7 months ago
2008
A scheme for general group oriented ID-based cryptosystems is proposed. This scheme allows an authorized subset in the general access structure to cooperatively decrypt the cipher...
CRYPTO
2008
Springer
13 years 9 months ago
2008
Springer
The Random Oracle Model and the Ideal Cipher Model are two well known idealised models of computation for proving the security of cryptosystems. At Crypto 2005, Coron et al. showed...
PKC
2007
Springer
14 years 1 months ago
2007
Springer
We provide a positive result about the Fiat-Shamir (FS) transform in the standard model, showing how to use it to convert threemove identification protocols into two-tier signatur...
ACISP
2007
Springer
14 years 1 months ago
2007
Springer
Abstract. Digital signatures are often proven to be secure in the random oracle model while hash functions deviate more and more from this idealization. Liskov proposed to model a ...
CRYPTO
2009
Springer
14 years 2 months ago
2009
Springer
RSA-FDH and many other schemes secure in the Random-Oracle Model (ROM) require a hash function with output size larger than standard sizes. We show that the random-oracle instanti...