The cryptanalysis of FEAL-4 with 20 chosen plaintexts
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An algebraic method is given for a chosen plaintext cryptanalysis of the Nippon Telegraph and Telephone Corporation's FEAL-4 block cipher. The method given uses 20 chosen plaintexts, but can be adapted to use as few as four chosen plaintexts.
Key wordsBlock cipher FEAL-4 Cryptanalysis Chosen plaintext attack
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