| 1. | The Germans were convinced that the Tunny cipher system was unbreakable.
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| 2. | She developed a cipher system and often smuggled messages out of Richmond in hollow eggs.
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| 3. | Several times during the war D�nitz, considered the possibility of the Enigma cipher systems compromise.
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| 4. | "' Libelle "'is a German cipher system, developed by the Federal Office for Information Security.
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| 5. | :We learned that they had employed a Polish cipher expert to revise their code and cipher systems.
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| 6. | The cipher system used by the Soviets to disguise the messages'content was an extremely complex double-encrypted scheme.
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| 7. | The cipher system was continued in use.
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| 8. | Today this notation is relatively rare, and has been replaced by kepatihan notation, which is a cipher system.
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| 9. | Like any other cipher system, breaking a pseudo-random number system just requires a sufficient amount of intercepted ciphertext.
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| 10. | He was a leading codebreaker and linguist, who worked on the Lorenz cipher system Hitler's most top-level code.
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