163 search results - page 10 / 33 » Relaxing Chosen-Ciphertext Security |
ASIACRYPT
2000
Springer
14 years 6 days ago
2000
Springer
Assuming a cryptographically strong cyclic group G of prime order q and a random hash function H, we show that ElGamal encryption with an added Schnorr signature is secure against ...
PKC
2005
Springer
14 years 1 months ago
2005
Springer
Abstract. We define and discuss symmetric subgroup membership problems and their properties, including a relation to the Decision DiffieHellman problem. We modify the Cramer-Shoup...
PKC
2009
Springer
14 years 8 months ago
2009
Springer
TCHo is a public key encryption scheme based on a stream cipher component, which is particular suitable for low cost devices like RFIDs. In its basic version, TCHo offers no IND-CC...
CRYPTO
2003
Springer
14 years 1 months ago
2003
Springer
Abstract. In this paper, we reconsider the notion of plaintext awareness. We present a new model for plaintext-aware encryption that is both natural and useful. We achieve plaintex...
CCS
2007
ACM
14 years 2 months ago
2007
ACM
In a proxy re-encryption (PRE) scheme, a proxy is given special information that allows it to translate a ciphertext under one key into a ciphertext of the same message under a di...