However, stream ciphers can be susceptible to serious security problems if used incorrectly: see stream cipher attacks — in particular, the same starting state ( seed ) must never be used twice.

However, this comes at a cost: because the keystream is now pseudorandom, and not truly random, the proof of security associated with the one-time pad no longer holds: it is quite possible for a stream cipher to be completely insecure.

However, when he decodes the cipher ( which requires knowledge of change-ringing ) it leads him to the emeralds, still untouched in their hiding place in the church.

However, unlike a Vigenère cipher, if we have to extend our message, we don't repeat the key ; we just continue on from the key text.

However, like the S-1 block cipher, it is generally regarded as a hoax, although of lesser quality than S-1.

However, eight rounds also proved to be insufficient — in 1989, at the Securicom conference, Eli Biham and Adi Shamir described a differential attack on the cipher, mentioned in ( Miyaguchi, 1989 ).

However, none of the cipher variants used in the Iron Mask period included masque, an unlikely word to include in the cipher's small repertory.

However, both Lars Knudsen and Sean Murphy found minor weaknesses in this version, prompting a redesign of the key schedule to one suggested by Knudsen ; these variants were named SAFER SK-64 and SAFER SK-128 respectively — the " SK " standing for " Strengthened Key schedule ", though the RSA FAQ reports that, " one joke has it that SK really stands for ' Stop Knudsen ', a wise precaution in the design of any block cipher ".

However, weak keys are much more often a problem where the adversary has some control over what keys are used, such as when a block cipher is used in a mode of operation intended to construct a secure cryptographic hash function ( e. g. Davies-Meyer ).

However, most of the German armed and secret services and civilian agencies that used Enigma employed poor procedures and it was these that allowed the cipher to be broken.

However, it may also refer to a different type of cipher system that looks like a zigzag line going from the top of the page to the bottom.

However, the system is designed, ingeniously and hopefully, so that no one man could initiate a thermonuclear war.

However, there is always the possibility that chance will make demands the dancers find impossible to execute.

However, it is important to trace the philosophy of the French Revolution to its sources to understand the common democratic origin of individualism and socialism and the influence of the latter on the former.

However, it was not of innocence in general that I was speaking, but of perhaps the frailest and surely the least important side of it which is innocence in romantic love.

However, neither of these two cities is on the desired July 1 to June 30 fiscal year.

However, there is a more profound consideration to this proposed merger than profit and loss.

However, if their United States income is not subject to the withholding of tax on wages, their returns are due June 15, 1962, if they use a calendar year, or the 15th day of the 6th month after the close of their fiscal year.

However, its modern one-story layout is designed to increase our production capacity, permit more efficient manufacturing, and substantially reduce current repair and maintenance costs.

However, because this vulnerability is mutual, it is to the advantage of neither side to destroy the opponent's cities, at least so long as the opponent has nuclear weapons with which to effect reprisal.

However, there is a minimum of legislative restriction on boating.

However, it is essential that the various mathematical symbols used in the equations be understood so that the mathematical processes can be done properly and in their correct order.

However, the use of tripods is not allowed.

However, there is also much to be gained by making use of the abilities of the local people who are available and interested in recreation.

However, that is not all he has to do.

However one looks at it, therefore, I'd say that your horoscope for this autumn is the reverse of rosy.

However, a major factor in binding dirt is the attraction between surfaces that goes under the name of Van der Waal's forces.

However, the conversion from mass to size is unreliable, since many photographic meteors give evidence of a fluffy, loosely bound meteorite structure with densities as low as Af.

However, as a field measurement, it is open to question.

However, this artery is known to be a nutrient vessel with a distribution primarily to the proximal airways and supportive tissues of the lung.

However, if there is no additional complex of singular lines, the order of the image regulus of a pencil is precisely Af.

However, the factor of physical isolation is not a static situation.

However, any such suggestion accounts for only some of the difficulties in hearing tone, or in developing a realistic attitude about tone, but not for the analytic difficulties that occur even when tone is meticulously recorded.

However, there always is some limit to the numbers who will spend the time and effort to acquire training.

However, its intermediate result storage mechanism, a paper card writer / reader, was unreliable, and when inventor John Vincent Atanasoff left Iowa State College for World War II assignments, work on the machine was discontinued.

However, the possibility of actually constructing a conscious machine was probably first discussed by Ada Lovelace, in a set of notes written in 1842 about the Analytical Engine invented by Charles Babbage, a precursor ( never built ) to modern electronic computers.

However, the machine also extended the idea of multiple " General Purpose Registers " ( GPRs ), which gave the programmer flexibility to use these high-speed memory caches as they needed, potentially addressing the performance issues.

However, continued demand led to a Nova 4 machine, this time based on four AMD 2901 bit-slice ALUs.

However, it is important to note that Butler wrote of machines developing consciousness by natural selection, not artificially, although machine algorithms are approaching a level of autonomy which could be considered natural, now.

However the majority of civilian casualties were killed by indirect fire from artillery, heavy machine guns and incendiary shells.

However, the scientists of this civilization tried to control the Earth's climate by creating a weather machine, so the Earth created the Black Mothra, named Battra.

However, up to the 1940s, many subsequent designs ( including Charles Babbage's machines of the 1822 and even ENIAC of 1945 ) were based on the decimal system ; ENIAC's ring counters emulated the operation of the digit wheels of a mechanical adding machine.

However, with its small magazine, it is small enough to be carried in a pistol holster, which suggests that it could be classified as a machine pistol.

However, a Time Magazine reconstruction of the long-suppressed Bavarian prosecutor's report indicates that a third kidnapper ( Reeve identifies Adnan Al-Gashey ) stood at the door of the western helicopter and raked the remaining five hostages with machine gun fire ; Gutfreund, Shorr, Slavin, Spitzer and Shapira were shot an average of four times each.

However, real progress was much slower, and after the ALPAC report in 1966, which found that ten years long research had failed to fulfill the expectations, funding for machine translation was dramatically reduced.

However, the transition from Modernism to Postmodernism is often said to have happened at 3: 32pm on the 15th of July in 1972, when Pruitt Igoe ; a housing development for low-income people in St. Louis, which had been a prize winning version of le Corbusier's ' machine for modern living ' was deemed uninhabitable and was torn down ( Irving 1993, 480 ).

However host discovery or ping scanning or ping sweep is still a part of network scanning tools like nmap, as it may give basic evidence about the existence of a remote machine.

However, stamps from Henry Archer's perforation trials had been issued the last few months of 1850, then during the 1851 parliamentary session of 1851, at the House of Commons, and finally in 1853 / 54 after the government paid Mr. Archer £ 4, 000 for his machine and the patent.

However, not only because of the message conveyed, but also Bearden ’ s vernacular realism represented in the work makes The Visitation noteworthy ; Bearden describes two figures in The Visitation somewhat realistically but does not fully follow the pure realism by distorting and exaggerating some parts of their body, to “ convey an experiential feeling or subjective disposition .” Bearden ’ s quotation also demonstrates his supportive view to vernacular realism: “ the Negro artists must not be content with merely recording a scene as a machine.

However, many web applications in development are addressing this issue by creating a machine-readable format upon the publishing of data or the request of a machine for such data.

However, speech recognition ( by a machine ) is a very complex problem.

However the macro features of the assembler were used to define the virtual machine instructions of the SNOBOL Implementation Language, the SIL.

However, the tape can be moved back and forth through the machine, this being one of the elementary operations of the machine.

However, Ultra also encompassed decrypts of the German Lorenz SZ 40 / 42 machines that were used by the German High Command, and the Hagelin machine and other Italian and Japanese ciphers and codes such as PURPLE and JN-25.

However, it is often more desirable to configure the functionality without interrupting the normal operations of the machine.

However, according to general relativity it would not be possible to use a wormhole to travel back to a time earlier than when the wormhole was first converted into a time machine by accelerating one of its two mouths.

However he did note that the individuals could potentially be prosecuted by the State of Victoria with a long list of criminal offences, including possession of firearms without a licence, possession of prohibited implements ( including machine guns, silencers and housebreaking tools ), aggravated burglary in possession of a firearm, common assault, wilful damage to property, possession of a disguise without lawful excuse and numerous motor vehicle offences.