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Jiri Tuma Vlastimil Klima. Doc RNDr Ji Tma DrSc RNDr Vlastimil Klma pednej na Matematickofyzikln fakult Univerzity Karlovy hashovacch funkcch Doc RNDr Ji Tma DrSc and RNDr Vlastimil Klma lecture on hash functions Faculty of Mathematics and Physics of Charles University in Prague Own Joker Island Cryptographers Men of the Czech Republic