402 search results - page 4 / 81 » Cryptosystems using Linear Groups |
EUROCRYPT
2000
Springer
14 years 2 months ago
2000
Springer
We present a chosen-ciphertext attack against both NICE cryptosystems. These two cryptosystems are based on computations in the class group of non-maximal imaginary orders. More pr...
IJNSEC
2006
13 years 11 months ago
2006
The cryptosystem proposed by Koyama is not semantically secure. Also, it is not secure against partial known plaintext attack, linearly related plaintext attack and low exponent a...
IJNSEC
2008
13 years 11 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...
ASIACRYPT
2000
Springer
14 years 3 months ago
2000
Springer
Abstract. In this work we investigate the difficulty of the discrete logarithm problem in class groups of imaginary quadratic orders. In particular, we discuss several strategies t...
SASN
2005
ACM
14 years 4 months ago
2005
ACM
Many emerging applications in both wired and wireless networks, such as information dissemination and distributed collaboration in an adversarial environment, need support of secu...