2
votes
Accepted
Does using a block cipher in CBC mode *twice* result in an all-or-nothing transform (AONT)?
The below is the first pass with the encryption of CBC where key $k$ is public or $0$ and $nb$ is the number of blocks. We keep the IV as random number
\begin{align}
C_1 &= Enc_k(P_1 \oplus IV)\\
...
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2
votes
Indistinguishability versus Indifferentiability
The definitions of "indistinguishability" and "indifferentiability" were introduced in paper "Indifferentiability, Impossibility Results on Reductions,
and Applications to the ...
- 21
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