174 search results - page 9 / 35 » Secure Identity Based Encryption Without Random Oracles |
100
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IJISEC
2006
14 years 11 months ago
2006
Abstract Privacy has become a factor of increasing importance in auction design. We propose general techniques for cryptographic first-price and (M + 1)st-price auction protocols t...
102
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ASIACRYPT
2000
Springer
15 years 4 months 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 ...
ACNS
2007
Springer
15 years 5 months ago
2007
Springer
In a proxy re-encryption scheme a semi-trusted proxy converts a ciphertext for Alice into a ciphertext for Bob without seeing the underlying plaintext. A number of solutions have ...
IJSN
2006
14 years 11 months ago
2006
In this paper, we propose a new signature scheme that is existentially unforgeable under a chosen message attack without random oracle. The security of our scheme depends on a new ...
106
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PROVSEC
2010
Springer
14 years 9 months ago
2010
Springer
Abstract. Signcryption as a single cryptographic primitive offers both confidentiality and authentication simultaneously. Generally in signcryption schemes, the message is hidden a...