174 search results - page 14 / 35 » Secure Identity Based Encryption Without Random Oracles |
TCC
2009
Springer
14 years 7 months ago
2009
Springer
We present the first hierarchical identity based encryption (HIBE) system that has full security for more than a constant number of levels. In all prior HIBE systems in the literat...
EUROCRYPT
2008
Springer
13 years 8 months ago
2008
Springer
Standard security notions for encryption schemes do not guarantee any security if the encrypted messages depend on the secret key. Yet it is exactly the stronger notion of security...
ACISP
2010
Springer
13 years 8 months ago
2010
Springer
We introduce the concept of attribute-based authenticated key exchange (AB-AKE) within the framework of ciphertext policy attribute-based systems. A notion of AKE-security for AB-A...
EUROCRYPT
2009
Springer
14 years 7 months ago
2009
Springer
Recently, at Crypto 2008, Boneh, Halevi, Hamburg, and Ostrovsky (BHHO) solved the longstanding open problem of "circular encryption," by presenting a public key encrypti...
CTRSA
2007
Springer
13 years 8 months ago
2007
Springer
Abstract. Multi-signatures allow multiple signers to jointly authenticate a message using a single compact signature. Many applications however require the public keys of the signe...