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Many ciphers were only partial implementations of Alberti's, and so were easier to break than they might have been ( e. g. the Vigenère cipher ).
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Many and ciphers
Many other realizations of block ciphers, such as the AES, are classified as substitution-permutation networks.
Many ciphers are based on publicly known algorithms or are open source, and so it is only the difficulty of obtaining the key that determines security of the system, provided that there is no analytic attack ( i. e., a ' structural weakness ' in the algorithms or protocols used ), and assuming that the key is not otherwise available ( such as via theft, extortion, or compromise of computer systems ).
Many modern block ciphers use more complex forms of transposition related to this simple idea.
Many modern block ciphers are based on a construction proposed by Horst Feistel.
Many of the classical ciphers can be cracked using brute force or by analyzing only ciphertext with the exception of the one-time pad.
Many block ciphers, such as RC5, support a variable block size.
Many modern and also some old symmetric block ciphers are based on Feistel networks ( e. g. GOST 28147-89 block cipher ), and the structure and properties of Feistel ciphers have been extensively explored by cryptographers.
Many writers claimed to have invented unbreakable ciphers.
Many classical ciphers arrange the plaintext into particular patterns ( e. g., squares, rectangles, etc.
Many classical ciphers were used by well-respected people, such as Julius Caesar and Napoleon, who created their own ciphers which were then popularly used.
Many ciphers had their origins in the military and were used for transporting secret messages among people on the same side.
Many transposition ciphers are done according to a geometric design.
Many transposition ciphers are similar to these two examples, usually involving rearranging the letters into rows or columns and then taking them in a systematic way to transpose the letters.
Many of the classical ciphers can be broken even if the attacker only knows sufficient ciphertext and hence they are susceptible to a ciphertext-only attack.
Many specialized authenticated encryption modes have been developed for use with symmetric block ciphers.
Many and were
Many of its sojourners were devoted to seclusion and quiet, and lived there to the end of their days.
Many of the myocardial fibers were hypertrophied and had large, irregular, basophilic nuclei.
Many aspects of civilization were not yet sufficiently crystallized to find expression, nor could the simple economic and social foundations of this world support a lofty structure.
Many potters clung to the past the more determinedly as they were confronted with radically new ideas ; ;
Many patent contests were waged over automobile components and accessories, among them tires, detachable rims, ball bearings, license brackets, and electric horns.
Many of the roads also were hit by an unusually severe winter.
Many of the latter were destroyed in their turn, during the burning of the vast Ch'in palace some ten years later ; ;
Many anthropologists ( students and teachers ) were active in the antiwar movement.
Many of the non-alphanumeric characters were positioned to correspond to their shifted position on typewriters.
Many of the settings for Agatha Christie ’ s books were directly inspired by the many archaeological field seasons spent in the Middle East on the sites managed by her second husband Max Mallowan.
Many batting records were set in this period.
Many lesser beings were said to be children of Aphrodite.
Many peasant parties were also nationalist parties, because peasants often worked their land for the benefit of landlords of different ethnicity.
Many remarkable insects and spiders were recently discovered in the amber of Jordan including the oldest zorapterans, clerid beetles, umenocoleid roaches, and achiliid planthoppers.
Many students left and were enrolled in the local common school or a recently re-opened private school for boys.
Many of the Ainu dialects, even from one end of Hokkaido to the other, were not mutually intelligible ; however, the classic Ainu language of the Yukar, or Ainu epic stories, was understood by all.
Many fragments were supplied in quotes by Athenaeus, principally on the subject of wine-drinking, but fr. 333, " wine, window into a man ", was quoted much later by the Byzantine grammarian, John Tzetzes.
Many officials, including those from Maryland, Virginia and Louisiana, as well as Chief Justice Chase personally, underscored for the President that the Southern states were economically in a state of chaos and governmental disorganization, and most anxious to reach agreements that would restore them to the Union.
Many of the men involved with Johnson's acquittal committee were friends of Secretary William Seward, Johnson's strongest ally on his Presidential Cabinet.
Many critics considered Johnson's actions were passive and delayed, and thought his defense of the Monroe Doctrine in this instance was weak.
Many of the burhs were twin towns that straddled a river and connected by a fortified bridge, like those built by Charles the Bald a generation before.
Many Athenians prominent earlier in the century would have lost citizenship, had this law applied to them: Cleisthenes, the founder of democracy, had a non-Athenian mother, and the mothers of Cimon and Themistocles were not Greek at all, but Thracian.
Many of these were arrested in Ireland, and some in Great Britain.
Many clinical tests were inconclusive, probably because it had been used as a surface antiseptic.
Many of these were part of the corruption indulged in by Scott and the Pennsylvania's president, J. Edgar Thomson, which consisted of inside trading in companies that the railroad did business with, or payoffs made by contracting parties " as part of a quid pro quo ", as biographer David Nasaw writes.
Many and only
Many of my friends at the time thought that I had received a well-deserved condemnation when Lincoln Steffens denounced me in a review of one of my books as a perfect example of the obsolete man who could understand and sympathize only with the dead past.
Many people think that pansies last only a few weeks, then their period of growth and bloom is over.
Many of the suggested systems seem to have only the most tenuous relationship to the language structures that they purport to represent.
Many a student was able to remain at Spelman, only because of her unobtrusive help.
Many people seem to be following a similar strategy by cooperating if and only if others cooperate in return.
Many desert annuals are therophytes, because their seed-to-seed life cycle is only weeks and they spend most of the year as seeds to survive dry conditions.
Many stars visible to the naked eye have such a low absolute magnitude that they would appear bright enough to cast shadows if they were only 10 parsecs from the Earth: Rigel (− 7. 0 ), Deneb (− 7. 2 ), Naos (− 6. 0 ), and Betelgeuse (− 5. 6 ).
Many states have Arbor Day although only Victoria has Arbor Week, which was suggested by Premier Dick Hamer in the 1980s.
Many believers in the Bible hold that only one of these families is trustworthy as transmitting the Word of God.
Many militias and irregular forces adapt civilian vehicles into AFVs ( armored fighting vehicles ) and troop carriers, and in some regional conflicts these " technicals " are the only combat vehicles present.
Many pathways and signals lead to apoptosis, but there is only one mechanism that actually causes the death of a cell.
Many observers claimed to have determined such parallaxes, but Tycho Brahe and Giovanni Battista Riccioli concluded that they existed only in the minds of the observers, and were due to instrumental and personal errors.
Many experts consider these drugs obsolete for treating anxiety but valuable for the short-term treatment of severe insomnia, though only after benzodiazepines or non-benzodiazepines have failed.
Many Aleuts now live across the state and not only in the Aleutians which has helped to spread the arts of their people and to better develop methods of creating their arts.
Many copies were mistakenly put on store shelves on the scheduled release date, only to be immediately recalled.
Many ships had only jury masts and it took a full day for the convoy to reach the mouth of the bay, finally sailing into open water on 15 August.
Many bees are opportunistic foragers, and will gather pollen from a variety of plants, while others are oligolectic, gathering pollen from only one or a few types of plant.
Many Boers had German ancestry and many members of the government were themselves former Boer military leaders who had fought with the Maritz rebels against the British in the Second Boer War, which had ended only twelve years earlier.
* Country collections: Many enthusiasts focus their collection on only a single country — often their own.
Many important routes are not electrified and are only single track traffic around ' bends '.
Many philosophers consider experience to be the essence of consciousness, and believe that experience can only fully be known from the inside, subjectively.
Many Christians have believed that Jesus ' doctrine of peace speaks only to personal ethics and is distinct from civil government's duty to punish crime.
Many worms that have been created are designed only to spread, and don't attempt to change the systems they pass through.
Many are visited by tourists, some are visited only by archaeologists and biologists.
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