:If your key is as large ( or larger ) than your plaintext, and you " never " reuse the key material, then you have a one time pad.
12.
For a one time pad of unlimited size, given the unbounded entropy of the key space, we have U = \ infty, which is consistent with the one-time pad being unbreakable.
13.
At that point it MUST act like a OTP ( one time pad ) and completely hide the'brokenness'of the other two, with the key immediately being discarded since it is not saved anywhere.
14.
With the Admiralty now changing keys every day, instead of every 15 days as they had done the previous year, and the increasing use of one time pads, effectively made the continual breaking of high level cypher impossible.
15.
It began during the War at predecessor agencies . it was a good cypher, the one time pad, and theoretically unbreakable ( as proved by Claude Shannon of Bell labs ), except that the Soviets made some mistakes in their procedures.
16.
Is my dichotomy a false one ? ( halting problem, one time pad = actually guarantees a certain program could not exist, cryptography = guarantees nothing other than that if a hundred thousand mathematicians say " hey, this is hard for us.
17.
From an examination of the cryptographical processes of Russian security, Kona 1 appeared to have determined that one time pads were used for high grade ciphers, and a number of code books and recyphering tables were used for medium and low grade ciphers.
18.
Wilhelm Tranow and his team were considerably hindered by the introduction of one time pads and were deprived of substantial traffic, particularly daily SITREP reports from Western Approaches which used to be recyphered in " Area 1 table " but now were recyphered in " Commander-in-Chief Western Approaches Code OUT " one time pad.
19.
Wilhelm Tranow and his team were considerably hindered by the introduction of one time pads and were deprived of substantial traffic, particularly daily SITREP reports from Western Approaches which used to be recyphered in " Area 1 table " but now were recyphered in " Commander-in-Chief Western Approaches Code OUT " one time pad.
