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We construct a two-message oblivious transfer (OT) protocol without setup that guarantees statistical privacy for the sender even against malicious receivers. Receiver privacy is game based and relies...
In this paper, we consider a scenario where a sender transmits ciphertexts to multiple receivers using a public-key encryption scheme, and at a later point of time, wants to retrieve the plaintexts, w...
I introduce a theoretical framework, due originally to Lewis and Skyrms, used in several talks in the PSA symposium "Signaling Within the Organism." I contrast sender-receiver systems as they appear w...
Proving Correctness and Security of Two-Party Computation Implemented in Java in Presence of a Semi-Honest Sender
cryptographic protocols interactive theorem-proving implementation-level analysis
2016/1/8
We provide a proof of correctness and security of a two-party-computation protocol based
on garbled circuits and oblivious transfer in the presence of a semi-honest sender. To achieve this we are
th...
On the Impossibility of Sender-Deniable Public Key Encryption
foundations sender-deniable encryption simulatable PKE black-box separation
2013/2/21
The primitive of deniable encryption was first introduced by Canetti et al. (CRYPTO, 1997). Deniable encryption is a regular public key encryption scheme with the added feature that after running the ...
We consider a dynamic version of sender-receiver games, where the sequence of states follows an irreducible Markov chain observed by the sender. Under mild assumptions, we provide a simple characteriz...
The Sender-Excited Secret Key Agreement Model: Capacity and Error Exponents
Secret key capacity Common randomness Wiretap channel Sender-excitation Reliability exponent Secrecy exponent
2011/9/16
Abstract: We consider fundamental limits of the secret key generation problem when the sources are randomly excited by the sender and there is a noiseless public discussion channel. In many practical ...
Sender and Receiver Addresses as Cues for Anti-Spam Filtering
Spam unsolicited e-mail junk mail e-mail address filter
2014/3/12
This study analysed the sender and receiver addresses of 3,417 unsolicited e-mails.Over 60.3% of unsolicited e-mails were found to have an invalid sender address and 92.8% receiver addresses did not a...