Sciweavers

345 search results - page 18 / 69
» On the Security of a Variation of Cramer-Shoup's Public Key ...
Sort
View
ISADS
1999
IEEE
13 years 11 months ago
A Secure Key Registration System based on Proactive Secret-Sharing Scheme
We designed a secure key registration system based on the proactive secret-sharing scheme. A user can register important data such as a session key to a distributed system in a (t...
Masayuki Numao
TCC
2009
Springer
153views Cryptology» more  TCC 2009»
14 years 7 months ago
On the (Im)Possibility of Key Dependent Encryption
We study the possibility of constructing encryption schemes secure under messages that are chosen depending on the key k of the encryption scheme itself. We give the following sep...
Iftach Haitner, Thomas Holenstein
AMC
2005
121views more  AMC 2005»
13 years 6 months ago
A new key authentication scheme for cryptosystems based on discrete logarithms
Key authentication is very important in private communication and data integrity. Recently, Peinado, Zhang and Kim showed that the LHL scheme is not secure, respectively. From pub...
Zuhua Shao
ISPEC
2011
Springer
12 years 9 months ago
Traitor Tracing against Public Collaboration
Abstract. Broadcast encryption provides a convenient method to distribute digital content to subscribers over an insecure broadcast channel. Traitor tracing is needed because some ...
Xingwen Zhao, Fangguo Zhang
CRYPTO
1999
Springer
152views Cryptology» more  CRYPTO 1999»
13 years 11 months ago
An Information Theoretic Analysis of Rooted-Tree Based Secure Multicast Key Distribution Schemes
Several variations of rooted tree based solutions have been recently proposed for member revocation in multicast communications [18, 19, 20, 21]. In this paper, we show that by ass...
Radha Poovendran, John S. Baras