163 search results - page 11 / 33 » Relaxing Chosen-Ciphertext Security |
DCC
2008
IEEE
14 years 7 months ago
2008
IEEE
In this paper, we formally prove that padding the plaintext with a random bit-string provides the semantic security against chosen plaintext attack (IND-CPA) for the McEliece (and ...
EUROCRYPT
2003
Springer
14 years 1 months ago
2003
Springer
Abstract. In this paper we present a simpler construction of a publickey encryption scheme that achieves adaptive chosen ciphertext security (CCA2), assuming the existence of trapd...
ACNS
2007
Springer
14 years 2 months ago
2007
Springer
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...
ESORICS
2007
Springer
14 years 2 months ago
2007
Springer
A formal treatment to the privacy of concealed data aggregation (CDA) is given. While there exist a handful of constructions, rigorous security models and analyses for CDA are stil...
ICIC
2009
Springer
14 years 2 months ago
2009
Springer
Recently, proxy re-encryption scheme received much attention. In this paper, we propose a proxy re-encryption used for divert ciphertext from one group to another. The scheme is bi...