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» On Black-Box Complexity of Universally Composable Security i...
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CSFW
2012
IEEE
11 years 7 months ago
Provably Secure and Practical Onion Routing
The onion routing network Tor is undoubtedly the most widely employed technology for anonymous web access. Although the underlying onion routing (OR) protocol appears satisfactory...
Michael Backes, Ian Goldberg, Aniket Kate, Esfandi...
CRYPTO
2007
Springer
162views Cryptology» more  CRYPTO 2007»
13 years 11 months ago
Universally-Composable Two-Party Computation in Two Rounds
Round complexity is a central measure of efficiency, and characterizing the round complexity of various cryptographic tasks is of both theoretical and practical importance. We show...
Omer Horvitz, Jonathan Katz
FOCS
2007
IEEE
13 years 11 months ago
Cryptography from Sunspots: How to Use an Imperfect Reference String
The Common Reference String (CRS) model equips all protocol participants with a common string that is sampled from a pre-specified distribution, say the uniform distribution. Thi...
Ran Canetti, Rafael Pass, Abhi Shelat
STOC
2003
ACM
110views Algorithms» more  STOC 2003»
14 years 5 months ago
Non-interactive and reusable non-malleable commitment schemes
We consider non-malleable (NM) and universally composable (UC) commitment schemes in the common reference string (CRS) model. We show how to construct non-interactive NM commitmen...
Ivan Damgård, Jens Groth
CTRSA
2006
Springer
156views Cryptology» more  CTRSA 2006»
13 years 8 months ago
Universally Composable Oblivious Transfer in the Multi-party Setting
We construct efficient universally composable oblivious transfer protocols in the multi-party setting for honest majorities. Unlike previous proposals our protocols are designed in...
Marc Fischlin