Sciweavers

IACR
2011
110views more  IACR 2011»
12 years 4 months ago
On the (In)security of Hash-based Oblivious RAM and a New Balancing Scheme
With the gaining popularity of remote storage (e.g. in the Cloud), we consider the setting where a small, protected local machine wishes to access data on a large, untrusted remot...
Eyal Kushilevitz, Steve Lu, Rafail Ostrovsky
IACR
2011
88views more  IACR 2011»
12 years 4 months ago
GCM, GHASH and Weak Keys
The Galois/Counter Mode (GCM) of operation has been standardized by NIST to provide single-pass authenticated encryption. The GHASH authentication component of GCM belongs to a cla...
Markku-Juhani O. Saarinen
IACR
2011
158views more  IACR 2011»
12 years 4 months ago
Can Homomorphic Encryption be Practical?
Abstract. The prospect of outsourcing an increasing amount of data storage and management to cloud services raises many new privacy concerns for individuals and businesses alike. T...
Kristin Lauter, Michael Naehrig, Vinod Vaikuntanat...
IACR
2011
292views more  IACR 2011»
12 years 4 months ago
Practical Relay Attack on Contactless Transactions by Using NFC Mobile Phones
—Contactless technology is widely used in security sensitive applications, including identification, payment and access-control systems. Near Field Communication (NFC) is a shor...
Lishoy Francis, Gerhard P. Hancke, Keith Mayes, Ko...
IACR
2011
136views more  IACR 2011»
12 years 4 months ago
Trapdoors for Lattices: Simpler, Tighter, Faster, Smaller
We give new methods for generating and using “strong trapdoors” in cryptographic lattices, which are simultaneously simple, efficient, easy to implement (even in parallel), a...
Daniele Micciancio, Chris Peikert
IACR
2011
87views more  IACR 2011»
12 years 4 months ago
Is privacy compatible with truthfulness?
In the area of privacy-preserving data mining, a differentially private mechanism intuitively encourages people to share their data truthfully because they are at little risk of ...
David Xiao
IACR
2011
112views more  IACR 2011»
12 years 4 months ago
Improved Generic Algorithms for Hard Knapsacks
At Eurocrypt 2010, Howgrave-Graham and Joux described an algorithm for solving hard knapsacks of density close to 1 in time ˜O(20.337n ) and memory ˜O(20.256n ), thereby improvin...
Anja Becker, Jean-Sébastien Coron, Antoine ...
IACR
2011
91views more  IACR 2011»
12 years 4 months ago
A Scalable Method for Constructing Galois NLFSRs with Period $2^n-1$ using Cross-Join Pairs
This paper presents a method for constructing n-stage Galois NLFSRs with period 2n − 1 from n-stage maximum length LFSRs. We introduce nonlinearity into state cycles by adding a ...
Elena Dubrova
IACR
2011
90views more  IACR 2011»
12 years 4 months ago
On the Security of the Winternitz One-Time Signature Scheme
Abstract. We show that the Winternitz one-time signature scheme is existentially unforgeable under adaptive chosen message attacks when instantiated with a family of pseudo random ...
Johannes Buchmann, Erik Dahmen, Sarah Ereth, Andre...