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TCC
2009
Springer
123views Cryptology» more  TCC 2009»
9 years 12 months ago
Hierarchical Identity Based Encryption with Polynomially Many Levels
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...
Craig Gentry, Shai Halevi
CRYPTO
2006
Springer
224views Cryptology» more  CRYPTO 2006»
9 years 3 months ago
Anonymous Hierarchical Identity-Based Encryption (Without Random Oracles)
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...
Xavier Boyen, Brent Waters
AAECC
2006
Springer
135views Algorithms» more  AAECC 2006»
9 years 5 months ago
Applying Fujisaki-Okamoto to Identity-Based Encryption
The Fujisaki-Okamoto (FO) conversion is widely known to be able to generically convert a weak public key encryption scheme, say one-way against chosen plaintext attacks (OW-CPA), t...
Peng Yang 0002, Takashi Kitagawa, Goichiro Hanaoka...
CCS
2006
ACM
9 years 3 months ago
Attribute-based encryption for fine-grained access control of encrypted data
As more sensitive data is shared and stored by third-party sites on the Internet, there will be a need to encrypt data stored at these sites. One drawback of encrypting data, is t...
Vipul Goyal, Omkant Pandey, Amit Sahai, Brent Wate...
CJ
2006
123views more  CJ 2006»
8 years 11 months ago
Unconditionally Secure Anonymous Encryption and Group Authentication
Anonymous channels or similar techniques that can achieve sender's anonymity play important roles in many applications. However, they will be meaningless if cryptographic prim...
Goichiro Hanaoka, Junji Shikata, Yumiko Hanaoka, H...
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