hearken
发表于 2025-3-21 20:07:41
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Vulnerable
发表于 2025-3-21 22:35:58
Aims and Methods of Cryptography (passive) eavesdropping and (active) falsification (ISO 7498). Security against breaking the secrecy in the sense of confidentiality and privacy is the classic goal, whereas security against forgery and spurious messages, that is to say authentication of the sender, has only recently acquired much
FOIL
发表于 2025-3-22 02:42:19
Encryption Steps: Transpositions its elements. This is for N > 2 a severe restriction. Requiring moreover that in every row and in every column, one occurs just once and thus the elements are zero otherwise, leads to permutation matrices effectuating a mere permutation of the vector space basis.
CAB
发表于 2025-3-22 08:21:18
Polyalphabetic Encryption: Keys466 or 1467 for his friend Leonardo Dato, the papal secretary. The Latin original is reproduced in Aloys Meister, ., Paderborn, Schöningh, 1906, pp. 125–141 (Italian translation ., manuscript, about 1470).
俗艳
发表于 2025-3-22 11:48:00
Composition of Classes of Methodshis way by . . An encryption method . is a subset of .* . . . indicates the subset of periodic encryptions with key sequences of period ., . . the subset of encryptions with non-computable key sequences.
venous-leak
发表于 2025-3-22 13:27:37
Encryption Securitysume pessimistically that the enemy knows what method has been chosen—there are not too many of them, and most cryptographers are familiar with only a few. The ‘basic law of cryptology’, which Kerckhoffs. had formulated as “.” was expressed more succinctly by Shannon in 1949: “the enemy knows the sy
venous-leak
发表于 2025-3-22 18:47:57
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Invertebrate
发表于 2025-3-22 21:35:04
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heartburn
发表于 2025-3-23 01:50:58
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Organization
发表于 2025-3-23 06:19:03
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