255 search results - page 3 / 51 » Security of Encryption Schemes in Weakened Random Oracle Mod... |
ACNS
2010
Springer
13 years 8 months ago
2010
Springer
Verifiably encrypted signature schemes (VES) allow a signer to encrypt his or her signature under the public key of a trusted third party, while maintaining public signature verifi...
PKC
2007
Springer
13 years 11 months ago
2007
Springer
Abstract. Key-insulated cryptography is a crucial technique for protecting private keys. To strengthen the security of key-insulated protocols, Hanaoka, Hanaoka and Imai recently i...
ACNS
2009
Springer
13 years 2 months ago
2009
Springer
In this paper, we propose a notion of threshold tag-based encryption schemes that simplifies the notion of threshold identity-based encryption schemes, and we show a conversion fro...
CRYPTO
2006
Springer
13 years 8 months ago
2006
Springer
We present an identity-based cryptosystem that features fully anonymous ciphertexts and hierarchical key delegation. We give a proof of security in the standard model, based on the...
JUCS
2008
13 years 5 months ago
2008
Abstract: Recently, Au et al. [Au et al. 2007] pointed out a seemingly neglected security concern for certificateless public key encryption (CL-PKE) scheme, where a malicious key g...