28 search results - page 2 / 6 » Identity Based Group Signatures from Hierarchical Identity-B... |
CRYPTO
2006
Springer
15 years 3 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...
106
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ASIACRYPT
2008
Springer
15 years 1 months ago
2008
Springer
Abstract. We provide a general framework for constructing identitybased and broadcast encryption systems. In particular, we construct a general encryption system called spatial enc...
EUROCRYPT
2004
Springer
15 years 5 months ago
2004
Springer
Abstract. We propose a simple and efficient construction of a CCAsecure public-key encryption scheme from any CPA-secure identity-based encryption (IBE) scheme. Our construction re...
TCC
2009
Springer
16 years 4 days 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...
115
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ASIACRYPT
2005
Springer
15 years 5 months ago
2005
Springer
In this paper, we discuss non-interactive updating of decryption keys in identity-based encryption (IBE). IBE is a public key cryptosystem where a public key is an arbitrary strin...