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Results tagged with oblivious-transfer
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user 84875
Oblivious transfer refers to a cryptographic protocol in which a sender possesses a set of data and a receiver queries the sender for a particular member of that set in such a way that the sender does not learn which member the receiver requests. In other words, the sender is oblivious of what information was actually transferred to the receiver.
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How to formally define the security of Random Oblivious Transfer
Assume that there is a protocol $(A,B)$ such that receives no input and satisfies:
$A$ - outputs two random bits $x_0, x_1 \in \{0,1\}$
$B$ - outputs a random bit $b \in \{0,1\}$ and also outputs $x_b …
- 155
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Construct an Oblivious Transfer protocol using a secure protocol that outputs random bits be...
Assume that there is a protocol $(A,B)$ such that receives no input and satisfies:
$A$ - outputs two random bits $x_0, x_1 \in \{0,1\}$
$B$ - outputs a random bit $b \in \{0,1\}$ and also outputs $x_b …
- 155
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How to attack Oblivious Transfer from a malicious sender that can deviate from the protocol
I am looking at at the $1–2 \space \text{oblivious transfer}$ that is described here: https://en.wikipedia.org/wiki/Oblivious_transfer#:~:text=In%20cryptography%2C%20an%20oblivious%20transfer,Rabin.
I …
- 155