101 search results - page 6 / 21 » Extended visual cryptography schemes |
TCC
2004
Springer
15 years 3 months ago
2004
Springer
In earlier work, we described a “pathological” example of a signature scheme that is secure in the Random Oracle Model, but for which no secure implementation exists. For that...
PKC
2004
Springer
15 years 3 months ago
2004
Springer
Abstract. In this paper, we examine issues related to the construction of identity-based threshold decryption schemes and argue that it is important in practice to design an identi...
ICASSP
2008
IEEE
15 years 4 months ago
2008
IEEE
Recent information hiding schemes are scrutinized in terms of their cryptographic performance. We establish conditions under which the key equivocation function is optimal for the...
DBSEC
2007
14 years 11 months ago
2007
In this paper, we take a closer look at the security of outsourced databases (aka Database-as-the-Service or DAS), a topic of emerging importance. DAS allows users to store sensit...
ICITA
2005
IEEE
15 years 3 months ago
2005
IEEE
Recently, a receipt-free scheme is rising for a secure eauction. The goal of a receipt-free scheme in an eauction is to prevent a bid-rigging. If the bid-rigging happens in the e-...