SODA
2012
ACM
12 years 1 months ago
2012
ACM
Motivated by the problem of querying and communicating bidders’ valuations in combinatorial auctions, we study how well different classes of set functions can be sketched. More...
CRYPTO
2012
Springer
12 years 1 months ago
2012
Springer
We construct a functional encryption scheme secure against an a-priori bounded polynomial number of collusions for the class of all polynomial-size circuits. Our constructions req...
IACR
2011
12 years 11 months ago
2011
In this paper, we study the complexity of secure multiparty computation using only the secure arithmetic black-box of a finite field, counting the cost by the number of secure m...
IACR
2011
12 years 11 months ago
2011
We put forward a generalization of lossy trapdoor functions (LTFs). Namely, all-but-many lossy trapdoor functions (ABM-LTFs) are LTFs that are parametrized with tags. Each tag can...
ASIACRYPT
2011
Springer
12 years 11 months ago
2011
Springer
A fundamental question in cryptography deals with understanding the role that randomness plays in cryptographic protocols and to what extent it is necessary. One particular line o...
SIGECOM
2011
ACM
13 years 2 months ago
2011
ACM
: Many natural games can have a dramatic difference between the quality of their best and worst Nash equilibria, even in pure strategies. Yet, nearly all work to date on dynamics s...
FOCS
2005
IEEE
14 years 5 months ago
2005
IEEE
We present a non-malleable commitment scheme that retains its security properties even when concurrently executed a polynomial number of times. That is, a manin-the-middle adversa...