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CCS
2005
ACM
13 years 10 months ago
Direct chosen ciphertext security from identity-based techniques
We describe a new encryption technique that is secure in the standard model against adaptive chosen ciphertext (CCA2) attacks. We base our method on two very efficient Identity-Ba...
Xavier Boyen, Qixiang Mei, Brent Waters
EUROCRYPT
2004
Springer
13 years 10 months ago
Chosen-Ciphertext Security from Identity-Based Encryption
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...
Ran Canetti, Shai Halevi, Jonathan Katz
ACNS
2007
Springer
165views Cryptology» more  ACNS 2007»
13 years 10 months ago
Tweaking TBE/IBE to PKE Transforms with Chameleon Hash Functions
We present two transforms to acquire chosen ciphertext security from tag based techniques. The first one requires the separability of underlying primitives. By separability, info...
Rui Zhang 0002
EUROCRYPT
2012
Springer
11 years 7 months ago
Detecting Dangerous Queries: A New Approach for Chosen Ciphertext Security
We present a new approach for creating chosen ciphertext secure encryption. The focal point ork is a new abstraction that we call Detectable Chosen Ciphertext Security (DCCA). Int...
Susan Hohenberger, Allison B. Lewko, Brent Waters