deletions | additions       diff --git a/Block Ciphers.tex b/Block Ciphers.tex  index 7fa2bca..b9de119 100644  --- a/Block Ciphers.tex  +++ b/Block Ciphers.tex 
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\begin{itemize}  \item $\sqrt(2^n) = 2^{n/2}$ known plaintexts/ciphertext pairs  \item Put these plaintext/ciphertext pairs in a table  \item Then you listen to another $2^{n/2}$ ciphertexts. \item High probability that one of the rows will hit.  \end{itemize}  \end{itemize}  \end{itemize}