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by mykhal 3957 days ago
The title had to be shortened, was:

  Romantic Cryptography, i.e. how to say "I love you" but only if the other person is going to say "me too"
.. and sorry for the direct PDF link.

now i found out that the article was published in the Journal of Craptology:

  http://www.anagram.com/jcrap/Volume_7/