Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Cryptography and Encryption Algorithms Document, Exams of Economic statistics

An in-depth analysis of various cryptography and encryption algorithms, including aes, rsa, sha, and des. It covers the principles behind these algorithms, their strengths and weaknesses, and their applications in modern security systems.

Typology: Exams

2010/2011

Uploaded on 10/04/2011

claire67
claire67 🇬🇧

4.6

(5)

265 documents

1 / 5

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1

  
!#"%$'&)(#*+-,.!0/1$243657$'398:*;3<$'=)57,.(>,@?A+B"75ACED36C72F$"7(G/#*;&AC7243</
(H3JI736(K$L3NM7"7D245)"J*92F,.5
"7(>?@36O'P;"
Q<RTSVUXW4Y[Z\^]`_@aS[bVc;_
^edNfegh7ij^jgh
kmlTnpoJqVrXqVst)npo)u^nwvxnyuzsFu{nw|#}~QJos4}yny~|[oAroH~w~o
c4b
`noFle~t}K`so}yny~^|VoLs4rl-rtX^sFu-~V}~T¡^¢
£
r^|#un¤ur^}¥so¦r§r^}¤}¥s¨q©}r^w
eª¬«
`so}yny~|[o¦V}7rt®sruvxnpos4u
}¯l°r^}¨}¯lVs§Xr|[|#~}~z}rn¯|~t4s{}¯ler|²±³'´QNµ¶rtFxoF·nw|}~^}r¸·
~tA}¯lznpo9os4}yny~|©¢
c4bº¹9A»m~°t¼½~^|T¾Tst¼`so}yn¤~|Vos4rl¿rtX^sFu0~V}À~®Áe¡^¢
£
r^|#un¤ur^}¥soNoXle~°½u;|#~^}Âr^}¤}¥s¨q©}1~t®s<}¯ler|QJÃ~®Ä}¯l°s¨±:'Å´
`so}yn¤~|Vo;n¯|Æ}¯lznwo9os4}yny~^|#¢
Ç
qq#t®~v^s4uÈXr½°½r^}~^tFoA.r^§Fs)eos4u¢
kV°t|Æ~^vst
pf3
pf4
pf5

Partial preview of the text

Download Cryptography and Encryption Algorithms Document and more Exams Economic statistics in PDF only on Docsity!

!#"%$'&)(#+-,.!0/1$243657$'398:;3<$'=)57,.(>,@?A+B"75ACED36C72F$"7(G/#*;&AC7243</

(H3JI736(K$L3NM7"7D 2 45)"J*92F,.

"7(>?@36O'P;"

Q<RTSVUXW4Y[Z^]`@aS[bVc; ^ edNfegh7ij^jgh

kmlTnpoJqVrXqVst)npo)u^nwvxnyuzsFu{nw|#}~€QJƒ‚„os4 †}yny~|[oAr oH‡ˆ~‰w‰Š~‹Œoˆ Ž c4‘Š’b  ”“nŠ•–oFle~t}K—ˆ˜s™o}yny~^|VoLs4r ˆl-š›rtXœ^sFu-~˜V}~ž‡ ŸT¡^¢ £ r^|#un¤ur^}¥s™o¦š›r§r^}¤}¥sš¨q©}›r^‰w‰ Žeª¬« —ˆ˜s™o}yny~|[o¦˜V}7rt®s”ruvxnpos4u }¯l°r^}¨}¯lVs§ Xr|[|#~}~z}rn¯| š›~t4s{}¯ler|²±³‚'´ŒQN춚›rtFœxoF·nw|}~^}r‰¸· ‡ˆ~tA}¯lznpo9os4 †}yny~|©¢ Ž c4‘Š’bº¹9A»m~˜°t¼‰½~^|T¾Tsˆt¼—˜s™o™}yn¤~|Vos4r ˆl¿š›rtXœ^sFu0~˜V}À~®‡Áe¡^¢ £ r^|#un¤ur^}¥s™oNoXle~˜°‰½u;|#~^}Âr^}¤}¥sˆš¨q©}1š›~t®s<}¯ler|€QJƒ‚Ã~®‡Ä}¯l°s¨±:‚'Å´ —˜`s™o™}yn¤~|Vo;n¯|Æ}¯lznwo9oˆs4 †}yny~^|#¢ Ç qq#t®~v^s4uÈ Xr‰½ ˜°‰½r^}~^tFoAš.r^§€Fs)˜eos4u¢

kV˜°t™|Æ~^vst

  _

É1Ê)ËAÌ)Í Î›ÏÑÐ

kmlVs™oˆsÀ—ˆ˜`s™o}yny~^|Vo@‹Òn¯‰w‰Js4r ˆlFsӚ›rtXœ^sFu”~˜V}9~ž‡{ŸT¡^¢ £ r|#un¤ur^}¥so š›r§Ãr^}¤}¥sˆš<q1}¦r^‰w‰ ްª¬«^ —˜[so™}yn¤~|Voƒ˜V}¦rt4sGruv†nwoˆsFuÔ}¯ler^}¦}¯l°sˆ§

Xr|[|#~}›~zˆ}rn¯|Kš›~t4s¦}¯ler|¿±:‚'´ŒQNμ՚›rtXœ†oX·.nw|K}~^}r‰¸·6‡ˆ~t}¯lznwo os4 †}yny~|©¢

jg×Ö ZzØÔÆUX‘А®c%YV’xÙ<b€4RVc;Ú1’ۊ\°bV’ܛ‘ÝZ^Û1Þº‘pb€ßmà[á€W4S[XR4R[Z6ß#âã”áTâ¨ä ÖßÓãåá[ØæÞ g

Ö¯ç Ø  Ú[Ú`ÛÝ;4RVc%un¯v†nwoXn¤~|r‰ ¾T~t™n¯}¯lzšè®’'é#b[YA4RVcJUFcܛZ^‘Ýb[YVcˆUÒZ^b[Y.êeSV’^4‘ŠcbTÒÙ<RVcb7ß©ë°ìÓß©íeìÓß©îeìÓßì€_ ‘ÝWJY[‘Ýïe‘ÝY[cY ç{ß#ð>ìß î ì jg ñjˆ ܛZU4ò°W°ó

_ g×Ö ZzØÔÆUX‘А®cÓYV’xÙ<b 4RVc¦ X~š¨q#‰Ýs4•” X~|ô™˜¾zr^}¥sˆ] õV]Œ’^öJ4RVc{’ܛÚۊc÷”beS[Ü ç cˆUAõ¦äøß€ìƒùáåZ^b[Y ú‘Šï^c€‘А4W ú^cˆ’Ü.cˆ®UF‘pˆZ^Ûm‘ÝbT®cˆU4Ú[U4cˆ4Z4‘Ý’b’bÈZ^b  U4úZ^b[YÈû'‘ÝZú^UXZ^Ü Ö‘gc g ‘pb€4RVc%’Ü.ÚÛÝc÷{ÚÛpZ^bVcxØ g Ö¯ç ØGü>ï Z^ÛpS[Z®c;õ õ@‘pb€®cˆUFܛW6’^ö³ßZ^bYá g

֏†Øø±Œ‘ÝbYZ^b[YW®4Z®c)ˆÛÝcZUFۊ\{4RVc9U4cZ^ÛÂZ^b[YÀ‘ÝܛZú‘Ýb[ZUF\@ÚZU44W6’^ö _¨ì^ j^j^ ù  ìý^ù

g ñ jˆ ܛZU4ò°W°ó

eg  ’Ü.Úۊc÷7bTS[Ü ç cˆUHõ)äßìÓù¥áAR[Z^W>Z'U4cZ^Û[beS[Ü ç cˆUÒþ9Z^WHZ^b›ZUFúS[Ü.cbTHZ^b[Y.Z;bV’bVÿˆcˆUF’9U4cZ^ÛVbTSÜ ç cˆU

Z^W6‘А4W6ܛ’eY[SÛÝS[W^ g üÒ÷°Ú[U4cW4W<õ›‘Ýb¦š›~u˜°‰^ ˜Tožr^ty¾˜eš@sˆ|}1‡~^tXšBZ^b[Y^ ‘Ýb€®cˆUFܛW6’^ö³ßZ^b[Yá^ g

 ’†Ù ÛÝcˆ6õAä¿ã j ìxù g

֑¯Ø{±³‘pb[Y€4RVc›š›~u˜°‰ ˜eo%’^öÒõ g

֑p‘wØÓ±³‘pb[Y¥Ù’²ïZ^ÛÝSVcW€’^ö7þV]<c÷°Ú[U4cW4W4cY ‘ÝbUFZ^Y[‘ÝZ^b`W{‘pbG4RVcÆUFZ^bVú^c  þ  _ Œ]9W4S[XRG4R[Z

4Z^b<þÀ䄐4Z^b Öy U4ú ÖõTØ®Ø g ûcˆ®cˆUFܛ‘pbVc›Ù<R[‘pFR”‘pW94RVcr^ty¾˜eš@sˆ|}y]  U4ú ÖõTØX]Œ’^ö6õZ^bY”W®4Z®c{4RVc ú^cbVcˆUFZ^Û[ö¯’^UFÜÔö¯’^U>Z^br^ty¾˜eš@sˆ|}Œ’^ö©õ Öc÷eÚU4cW4WHZ^ÛÝÛVbeS[Ü.cˆUX‘ݏˆZ^ÛVZ^b[W®ÙcˆUFWҐ®’;4R[c6®’;4RVc6bVcZUFcW®  Ú`ÛÝZ^cWJ’^öÒYVcˆ‘pܛZ^ÛÝWXØ g ñjˆ ܛZU4ò°W°ó

ý g  Ú[Ú`ۊ\Ӑ4RVc N˜[ ˆ‰ n¤uzs4r|åun¯v†nwoXn¤~|”r‰ ¾z~^tXny}¯lzšB®’@ˆZ^ÛݏˆS[ÛÝZ®c d

֑¯ØÓ4RVc ç Z^W®c 7U4cˆÚ[U4cW®cbT4Z4‘Š’b’^ö ^ 

֑p‘wØ@4RVc;ú^U4cZ®cW®’ܛÜ.’bY[‘Šï°‘ÝW®’^UN’^ö:ý›Z^b[YÀ j^j  g

ñjˆ ܛZU4ò°W°ó

eg Ž 4Z®c ç UF‘Šc#{4R[c)4RVUFcˆc%¥\eÚ1cW’^ös‰Ýsš@s|#}rtX§€t®~‹ ~Xq[st®r^}yny~^| g; ÚÚۊ\€cۊcÜ.cbT4ZU4\ÈU4’xÙԒ^Ú©cˆUXZ4‘Š’b[W

®’›’ ç 4Z^‘pb4RVc›t®~‹0s4 ˆl°s‰Š~|7‡~^tXšE’^ö³4R[c%ܛZ®UF‘½÷1]

_  ã 

_ j 

 ã¨_ f j ã_ 

Ö^’SÀZUFc  ‚9QKU4cêeS[‘ŠU4cY{®’›ú‘Šï^c%4RVc;U4’xÙ U4cY[S[cYÈcFRVcۊ’bÀöw’^UXÜÓØ ñjˆ ܛZU4ò°W°ó

  (^) ý

' eg×Ö ZzØ ªb4R[‘ÝWêTSVcW44‘Š’b4RVcA’ܛÚۊc÷beS[Ü ç cˆUXW¨ZU4c7‘ÝYVcbT4‘½écYZ^W4RVc.’Ü.Ú`ۊc÷ÈÚ#ÛÝZ^bVc7‘ gcg Z^W¨UFcˆÚ[U4c@

W®cbT®cY ç \7Ú1’‘Ýbz4WđÝb›Z^b  UFúZ^b[Y@û'‘ÝZú^UFZ^Ü g ªb@cZ^FRӒ^ö 4RVc<ö¯’ÛÝۊ’xÙ<‘ÝbVú9¬ÙĒ7ˆZ^W®cWĐ4RVc¨’b[Y‘А4‘Š’b.’b{õ YVcˆ®cˆUFÜ@‘ÝbVcW6Z›WFS ç W®cˆJÙ<R‘ݏFRȑpWJc‘А4RVcˆU<Z@ˆ‘ŠUFˆÛŠc;’^U¨Z@ÛݑÝb[c'‘pb€4RVc%’Ü.ÚÛÝc÷€Ú#ÛÝZ^bVc g ûcˆ®cˆUFܛ‘pbVc;Ù<R[‘pFR ¥\eÚ1c;’^öÒW4S ç W4cˆ<‘А6‘ÝW6‘pbcZ^FRˆZ^W®c)Z^bYȑŠö³4RVc%W4S ç W®cˆ6‘ÝW6Zӏˆ‘ŠUFˆÛŠc^][YVcˆ®cˆUXܛ‘ÝbVc;‘А4W) Xs|#}yt®s7Z^b`YÆtžrzunw˜eo g ªöm4RVc;W4S ç W®cˆ6‘ÝWJZ.ÛݑpbVcY[cˆ®cˆUFܛ‘ÝbVc'4RVc9ïZ^ÛÝSVcWN’^öŒõ›’^U4UFcW®Ú1’b[Y[‘ÝbVúA®’›Ù<R[cˆU4c9‘АJÜ.cˆcˆ4W64RVc9UFcZ^ÛÂZ^b[Y ‘ÝܛZú‘pb[ZU4\ÓZ ÷°cW d

֑¯Ø  ÛÝÛ ’ܛÚ`ۊc÷bTS[Ü ç cˆUFWJõ@WFZ4‘ÝW®ö¯\e‘Ýb[úBA õ%ã”_CA>ä&A õ;ã _ ùA

֑p‘wØ  ÛÝÛ ’ܛÚ`ۊc÷bTS[Ü ç cˆUFWJõ@WFZ4‘ÝW®ö¯\e‘Ýb[úBA õ%ã”CA î ìDA õ9ã ùA î ä '

‚'b€Z.W4‘Ýb[úۊcY‘ÝZú^UFZ^Üè’^ö:4R[c'’ܛÚۊc÷ÓÚ#ÛÝZ^bVc'YVUFZÙK4R[c¬ÙĒÓW4S ç W®cˆ4WNYVcWFUF‘ ç cYӑpb ֑¯Ø>Z^b`Y ֑ݑwØX]VZ^b[Y W4R[Z^Y[c94RVc%W4S ç W®cˆJ’b[W4‘ÝW®4‘pbVú.’^ö³Z^ÛpÛ1Ú©’‘pbz4W6’^UFU4cW®Ú1’b[Y[‘Ýb[ú)®’@õ@öw’^U<Ù<R[‘ݏXR€4RVc;‘ÝbVcêeS[Z^ÛݑА4‘ÝcW

Aõ%ã _CAFEGA õ%ã _ ùAKZ^b`Y Aõ;ã CA î ìHA õ;㔠ùA îJI '

ç ’^4RÈRV’ÛÝY g ñj (^) ܛZU4ò°W°ó Ö¯ç ØG±Œ‘Ýb`Y€4RVc9c÷°Z^Ü.’°Y[S[ÛÝS[W’^ö³4RVc%’Ü.Ú#ۊc÷€beS[Ü ç cˆU

õAä ֞j^ ìùæØLK^ 

ý

ì ֞j ãåùæØLK _

ý Z^b[Yé©b[Y¼‘А4W@ZUFúS[Ü.cbT›®’¼oXnŠ•YVcˆ‘ÝܛZ^Û6Ú`ÛÝZ^cW@‘pb ç ’^4RUFZ^Y[‘ÝZ^b[W@Z^b[YYVcˆú^U4cˆcW gƒ W4W4S[ܛ‘pbVú¦4R[Z

õ NM.ä¿ã j ö¯’^U<W®’Ü.c%Ú©’WF‘А4‘Šï^c9‘ÝbT®cˆú^cˆU.OåYVcˆ®cˆUFÜ@‘ÝbVc'4RVc%W4Ü@Z^ÛÝۊcW®JW4S[XRïZ^ÛÝSVc g ñj ܛZU4ò°W°ó

feg×Ö ZzØÃ±Œ‘ÝbYå4RVc{ú^U4cZ®cW®.’ܛÜ.’bY[‘Ýïe‘ÝW4’^U]>P]Ғ^ö<_ ý Z^bY j _N g ±[SVUF4RVcˆU]³é#b[Y ‘Ýbz®cˆú^cˆUXW:QÆZ^bYSR

W4S[XR4R[Z¨_ ý Q%ì j _NNR<ä,P g ñjˆ ܛZU4ò°W°ó

Ö¯ç (^) ØG±[’^U6cZ^FR’^ö³4RVc'ö¯’ÛÝۊ’†Ù¨‘ÝbVú7ÛݑÝbVcZUN’bVú^UFSVcbcWJc‘А4RVcˆUNé#bYÓZ^ÛÝÛ1W®’ÛpSV4‘Š’b[WNSVڀ®’›’bVú^UFS[cb[c9’^U c÷°Ú`ÛÝZ^‘Ýb€Ù<RT{4RVcˆU4c;‘ÝW6b[’›W®’ÛÝSV4‘Š’b g

֑¯Ø!xß!TU;Ü.’eY _

֑p‘wØ jý^ß!T Ü.’eY _ g

ñjˆ ܛZU4ò°W°ó

֏†Øøûcé#b[c;ü>S[ۊcˆUWV WYXC@öyS[b[4‘Ý’b g ’Ü.Ú`S[®cZX ֞j ^ØXà[X ֞jf ØJZ^b[Y8X Ö¤ _jØg

Ž 4Z®c ÖÙ¨‘А4RV’SVJÚ[UF’T’^öXØ[ J˜e‰Ýst]\ o@kmlVs4~t4sš ’b[cˆUFb‘ÝbVú.Ü.’°Y[S[ÛÝZU6’bVú^UXSVcb[cW6Z^b[YȐ4RVc X@ö¯Sb[4‘Š’b g

ÅW4‘ÝbVú.4R[‘pWN4RVcˆ’^U4cÜ][’^U<’^4RVcˆU4Ù<‘ÝW4c^]°é#b[Y€4RVc;UFcܛZ^‘Ýb[YVcˆUNÙ<R[cb  <â®â4ë;‘ÝWJY[‘Ýïe‘ÝY[cY ç \ _eg

ñjˆ ܛZU4ò°W°ó

jˆ°g×Ö ZzØÃQ<RVc9öw’Ûpۊ’†Ù<‘pbVú.‘ÝWJZ›W®\°W®®cÜø’^öÒÛݑÝb[cZUJcêTS[Z4‘Ý’b[W6‘ÝbS[b[òebV’xÙ<b[Wßmà`á#à[õÓZ^b[Y!^ g

ß ì á ì õ ì ý N^ ä jˆ

_á ì ýõ ì ^ ä _

^

ä

֑¯ØÓÆUF‘А®cÈYV’xÙ<b4RVc”r˜¾^š@sˆ|`}¥s4u¼Ü@Z®UF‘½÷Z^WFW®’eˆ‘pZ®cYÙ<‘А4R4R[‘pW.ÛݑÝbVcZU.W®\°W®®cÜ ’^öcêTS[Z4‘Ý’b[W

Ö _ ’^®c d^’SVU9ܛZ®UX‘½÷{W4R[’S[ÛÝYZ^ۊU4cZ^Y[\ ç c9‘Ýb€U4’xÙ0cFR[cۊ’bÈö¯’^UFÜÓØ

֑p‘wØÓŨW4‘pbVú0~|[‰ §ƒcÛÝcÜ.cbz4ZUF\ƒU4’xÙ ’^Ú1cˆUFZ4‘Š’b`W{é#b[YG4RVc¼t®~‹Bt®sFu˜[ Xs4uKsF l°sˆ‰½~|‡ˆ~t™š ö¯’^UȐ4RVc

Z^SVúÜ.cbT®cY ܛZ®UX‘½÷ƒ^ö4R[c@Z ç ’†ï^c€W®\eW4®cܶ’^öJcêeS[Z4‘Š’b[W g¦Ö_^ ‚9Q6ü d ±[S[ÛÝÛÒܛZUFòeW%Ù<‘ÝÛÝی’b[ÛÝ\

ç cA’ ç 4Z^‘Ýb[cY ç\ÀˆÛŠcZUFÛÝ\ÀYV’°ˆS[Ü.cbT4‘ÝbVú¦sˆvsˆtX§U4’xÙԒ^Ú©cˆUXZ4‘Š’b¦S[W®cYZ^b[Y ç\ÈU4cbYVcˆUF‘ÝbVúӐ4RVc U4cW4S[ۊJ‘ÝbȐ4RVc9öw’^UXÜøU4cêeSVcW®®cY gØ Ö‘Ý‘p‘wØÓ±VU4’Ü-\^’SVU9Z^b[W®ÙcˆU'®’ ֑ݑwØNÙ<UF‘А®c7YV’†Ù<b4RVc7ú^cbVcˆUFZ^یW®’ÛpSV4‘Š’bȒ^öĐ4RVcAú‘Šï^cb¦ÛݑÝbVcZU'W®\°W®®cÜ ’^ö³cêeS[Z4‘Š’bW6W4Z\°‘ÝbVú.Ù¨R[‘ݏFR€ïZUF‘ÝZ ç ۊcW ֑ŠöŒZ^bz[ØNZU4c6‡™t4sFs)v r^tXn¤rz‰Ýs™o g ñj ý@ܛZU4ò°W°ó

Ö¯ç ØGüH÷eÚ#ÛÝZ^‘Ýb¦4RVc@W44Z®cÜ.cbzA4R[ZAZȏ’ÛÝS[ܛbåï^c®’^U:`G‘ÝW;Z^bGsnоTsˆ|[vsF

}~t€ö¯’^U%4RVc{W4êTS`ZU4c@ܛZ®UF‘Š÷

a Z^bY c÷°ÚÛÝZ^‘pb”Ù<RZA‘ÝW7Ü.cZ^bT ç \ 4RVcZ^W4W®’°ˆ‘ÝZ®cY0snоTsˆ|[v r^‰¸˜s g +mcˆ a ä " f  ã j 

 ã f^9$^

Z^b[Y

`¦ä "

_ $ g Ž RV’†Ù04R[ZY‘pWJZ^bÈc‘Šú^cbTï^c®’^U¨ö¯’^U a Z^b[Y{é#bY€4RVc%’^U4U4cW4Ú©’b`Y[‘ÝbVúAc‘Šú^cbTï Z^ÛÝS[c g

ñ .ܛZU4ò°W°ó

±Œ‘Ýb[Y€4RVc9Ú1’ۊ\°bV’ܛ‘pZ^Û©‘pbcbX][Þed äGYVcˆ Ö_a ãfbhgeØÄÙ<R[cˆU4cigӑpWN4RVc%kjÀ.‘pYVcbz4‘ݐ¥\ÓÜ@Z®UF‘½÷ g l cb`c^][’^U

’^4RVcˆU4Ù¨‘ÝW®c^]°é#b[Y€4R[c9U4cܛZ^‘Ýb[‘pbVú7c‘Šú^cbzïZ^ÛÝSVc9’^ö a Z^b[Y4RVc)’^U4U4cW®Ú1’b[Y[‘pbVú)c‘Ýú^cbzï^c®’^U ` g

ñ jˆ ܛZU4ò°W°ó