209 search results - page 38 / 42 » Secure Hash-and-Sign Signatures Without the Random Oracle |
CCS
2009
ACM
14 years 8 months ago
2009
ACM
Denial of Service (DoS) attacks are serious threats for network societies. For dealing with DoS attacks, Jakobsson and Juels first proposed the notion of useful client puzzles (UC...
ACNS
2007
Springer
14 years 1 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 ...
CRYPTO
2003
Springer
14 years 18 days 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...
ACNS
2009
Springer
13 years 5 months ago
2009
Springer
In this paper, we propose a notion of threshold tag-based encryption schemes that simplifies the notion of threshold identity-based encryption schemes, and we show a conversion fro...
ACISP
2007
Springer
13 years 11 months ago
2007
Springer
Compact e-cash schemes allow a user to withdraw a wallet containing k coins in a single operation, each of which the user can spend unlinkably. One big open problem for compact e-c...