very short plaintexts symmetrically encrypted

Benjamin Donnachie benjamin at
Fri Jan 8 21:03:53 CET 2010

2010/1/8  <vedaal at>:
> At any rate, it seems disturbingly easy to distinguish between
> symmetrically encrypted messages having only the word 'yes' or 'no'
> just by 'looking' at the ciphertext.

i. Don't send such short messages
ii. Don't use symmetric encryption.


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