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Clock drift refers to several related phenomena where a clock does not run at exactly the same rate as a reference clock. That is, after some time the clock "drifts apart" or gradually desynchronizes from the other clock. All clocks are subject to drift, causing eventual divergence unless resynchronized. In particular, the drift of crystal-based clocks used in computers requires some synchronization mechanism for any high-speed communication. Computer clock drift can be utilized to build random number generators. These can however be exploited by timing attacks.

Attributes	Values
rdf:type	Thing yago:WikicatCryptographicAttacks yago:WikicatTimekeepingComponents yago:Abstraction100002137 yago:Act100030358 yago:Activity100407535 yago:Attack100972621 yago:Cognition100023271 yago:Component105868954 yago:Concept105835747 yago:Content105809192 yago:Event100029378 yago:Idea105833840 yago:Operation100955060 yago:Part105867413 yago:PsychologicalFeature100023100 yago:YagoPermanentlyLocatedEntity
rdfs:label	Deriva de rellotge (ca) Uhrenfehler (de) Deriva de reloj (es) Clock drift (en) 클럭 드리프트 (ko) Klockfel (sv)
rdfs:comment	La deriva de rellotge es refereix a diversos fenòmens relacionats a causa dels quals un rellotge no va exactament a la mateixa velocitat que un altre, el que significa, que després de cert temps l'hora indicada pel rellotge s'anirà separant (a això es refereix la deriva) de la indicada per l'altre. Aquest fenomen és aprofitat pels ordinadors per construir generadors de nombres aleatoris i també pot ser utilitzat per en criptografia. (ca) Unter dem Begriff Uhrenfehler versteht man die Abweichung der von der Uhr angezeigten Uhrzeit gegenüber einer Bezugszeit, die von einem Zeitnormal vorgegeben wird. Diese Abweichung kann konstant, stetig steigend oder fallend, oder veränderlich sein. (de) Clock drift refers to several related phenomena where a clock does not run at exactly the same rate as a reference clock. That is, after some time the clock "drifts apart" or gradually desynchronizes from the other clock. All clocks are subject to drift, causing eventual divergence unless resynchronized. In particular, the drift of crystal-based clocks used in computers requires some synchronization mechanism for any high-speed communication. Computer clock drift can be utilized to build random number generators. These can however be exploited by timing attacks. (en) La deriva de reloj se refiere a varios fenómenos relacionados debido a los que un reloj no marcha exactamente a la misma velocidad que otro, lo que significa, que después de cierto tiempo la hora indicada por el reloj se irá separando (a esto se refiere la deriva) de la indicada por el otro. Este fenómeno es aprovechado por las computadoras para construir generadores de números aleatorios y también puede ser utilizado para en criptografía. (es) 클럭 드리프트(clock drift)는 클럭이 정확한 속도로 동작하지 않음으로써 발생하는 현상을 일컫는다. 클럭을 발생시키는 오실레이터가 온도나 압력 등의 변화에 의해 미세하게 영향을 받음으로써 나타난다. 일반적으로 이러한 현상은 지속적으로 나타나며, 기대되는 동작 속도보다 빠르거나 느리게 된다. 만약, 기대되는 동작 속도보다 미세하게 빠르게 영향을 미치면, 기준 클럭보다 앞서게 된다. 반면, 기대되는 동작 속도보다 미세하게 느리게 영향을 미치면, 기준 클럭보다 뒤처지게 된다. 클럭 드리프트는 시간이 지나면 지날수록 원래의 기준 시각과의 편차는 커지는 현상으로 확인이 가능하다. 마치 기준 클럭을 중심으로 떠다니는 느낌이 들기 때문에 클럭 드리프트라고 하는 것이다. (ko)
rdfs:seeAlso	Hardware random number generator
dcterms:subject	Clocks Random number generation Cryptographic attacks Global Positioning System
Wikipage page ID	6083924 (xsd:integer)
Wikipage revision ID	1120387850 (xsd:integer)
Link from a Wikipage to another Wikipage	Caesium Pseudonymity Clocks Pendulum Decorrelation Earth's rotation Injection locking Second Side channel attack Random number generation Computer Coordinated Universal Time Cryptographically secure pseudorandom number generator Cryptography Timing attack Clock skew General relativity Global Positioning System Crystal oscillator Computer program Hardware random number generator Pendulum clock Tor hidden service Albert Einstein Cryptographic attacks Global Positioning System Central processing unit Gravitational time dilation Time dilation Pseudorandom number generator Process (computing) International Atomic Time Interrupt Atomic clock Bit slip Effects of relativity on GPS Time standard Special relativity Inertial frame of reference Random number generator Watch Tidal acceleration Segal's law SI unit Quartz oscillator Weighted average
sameAs	Clock drift Clock drift Clock drift Clock drift Clock drift Clock drift Clock drift Clock drift Clock drift
dbp:wikiPageUsesTemplate	dbt:Citation_needed dbt:Main dbt:See_also dbt:Short_description dbt:Unreferenced_section dbt:Use_dmy_dates dbt:Val
has abstract	La deriva de rellotge es refereix a diversos fenòmens relacionats a causa dels quals un rellotge no va exactament a la mateixa velocitat que un altre, el que significa, que després de cert temps l'hora indicada pel rellotge s'anirà separant (a això es refereix la deriva) de la indicada per l'altre. Aquest fenomen és aprofitat pels ordinadors per construir generadors de nombres aleatoris i també pot ser utilitzat per en criptografia. (ca) Unter dem Begriff Uhrenfehler versteht man die Abweichung der von der Uhr angezeigten Uhrzeit gegenüber einer Bezugszeit, die von einem Zeitnormal vorgegeben wird. Diese Abweichung kann konstant, stetig steigend oder fallend, oder veränderlich sein. (de) Clock drift refers to several related phenomena where a clock does not run at exactly the same rate as a reference clock. That is, after some time the clock "drifts apart" or gradually desynchronizes from the other clock. All clocks are subject to drift, causing eventual divergence unless resynchronized. In particular, the drift of crystal-based clocks used in computers requires some synchronization mechanism for any high-speed communication. Computer clock drift can be utilized to build random number generators. These can however be exploited by timing attacks. (en)

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