Rohrbach's demand

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In cryptanalysis , Rohrbach's demand describes a claim that the German mathematician and cryptologist Hans Rohrbach (1903-1993) formulated. He thus demands of the cryptanalyst not only to be satisfied with the solution of a ciphertext or even with only a fragmentary decipherment , but to completely expose the encryption system and in particular to uncover the key .

Rohrbach's demand is:

"The solution is only seen as finished once all the associated keys have been worked out."

- Hans Rohrbach : 1946

literature

Individual evidence

  1. Friedrich L. Bauer : Deciphered secrets - methods and maxims of cryptology . Springer, Berlin 2000 (3rd edition), p. 237. ISBN 3-540-67931-6 .
  2. Friedrich L. Bauer : Deciphered secrets - methods and maxims of cryptology . Springer, Berlin 2000 (3rd edition), p. 257. ISBN 3-540-67931-6 .