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UnlockingPDFguaranteedpasswordrecoveryforAdobeAcrobatCopyright(c)2007ElcomSoftCo.
Ltd.
UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaperContentsGoingdigital3What'sgoodaboutPDF4PDFdocumentsprotection5CuibonoPDFdocumentsprotectionmethodsDataaccessloss7Solvingapuzzle8AfewwordsaboutpasswordsPasswordrecoverymethodsChoosingasolution"ElcomSoft"solution–secureaccesstoPDF-files12AdvancedPDFPasswordRecoveryElcomSoftDistributedPasswordRecoveryAboutElcomSoft172UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper3GoingdigitalRapiddevelopmentofdigitaltechnologiesandelectroniccommunication,availabilityofmobilePCsandsmartphones,abundanceoftoolsforcreatingdocumentsorhigh-qualitypresentationscoupledwithconstantlygrowingvolumesofinformationandyearningfordoingbusinessmoreeffectivelyleadstoswitchingtoelectronicexchangeofinformation.
Notonlyenterprises,butstateorganizationsareintroducingnewelectronicsystemsofdocu-mentscirculation.
Online-readersofe-newspapersande-magazinesoutnumberthose,whostillreadprintmedia.
Sometitlesexistonthenetonly.
ThosewhoownPDAsprefere-booksande-magazinesoverpaperones.
Forinstance,morethan80,000e-bookscanbeboughtattheAmazon1onlinestore.
Exchanginge-documentsmeanscompatibleplatforms,applicationsandsoftwareversions.
Eve-ryonehasfaceda"can'topenthefile"situation.
Whatdoesafilerecipientuse–PCorMac,WindowsVistaorWindowsXP,MicrosoftWordorCorelWordPerfectThesolutionisusingauniversalformat,whichdependsneitheronsoftwarenoronhardware.
1PDFbooksanddocuments.
Dataof12.
09.
07UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper4What'sgoodaboutPDFSuchformatdoesexist.
ThisisanimmenselypopularPDF(PortableDocumentFormat)—cross-platformformatfore-documents,designedbyAdobe.
DocumentssavedasPDFfilescanbeviewedonvirtuallyanysystem.
Thoughplatform,operat-ingsystem,installedfontsorsoftwaremayvary,adocumentwithoriginaltextformatting,fontsettings,picturesorlayoutcanstillbeopened,readorprintedcorrectly.
PDFiswidelyusedinpublishingandprinting,distributinge-versionsofmedia,publishingreports,referenceinformationordocuments,andexchangingdata.
GooglesearchresultsforPDFfilesamountsto2360000pages!
ItisreallyimportantthatthesoftwareneededtoopenaPDFisfree(fromAdobeorathirdparty).
ThesefiguresshowthepopularityofPDFformat:AcrobatReaderisdownloadedfromCNETDownloadsfornearly35billiontimespermonth2.
VersatilePDFformathasquiteanumberofextrafeatures:easybrowsingoflargedocumentswithahelpofacross-referencesystem;properviewingofadocumentwithhandhelddevicesrunningPalmOS,SymbianOSetc;textavailabilityforsearchengines;compactfiles(smallfilesize)and–thefeaturewearemostinterestedin–widerangeofdocumentprotectionmethods.
2Overaperiod08.
08.
07-13.
09.
07UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper5PDFdocumentsprotectionCuibonoLet'sseewhoneedstoprotectaPDFdocumentandwhy.
Today'sworldassumesthatpossess-inginformationisacompetitiveedge.
Leakofconfidentialdatamaycausedirectfinancialharmtoanenterprise,indirectlossesofopportunitiesandotherunfavorableorunpredictableeffects.
Obviously,muchattentionispaidtodataprotection.
ITSecurityisarapidlydevelopingbranchofInformationTechnologyindustry.
Theeasiestmethodofdataprotectionislockingwithapass-word.
Onehasanabilitytosetthepassword(toopenand/oreditthedocument,oruseparticularfeatureslikehi-resolutionprinting)inmostdesktopapplications,includingAdobeAcrobat.
Properdocumentpasswordprotectionshouldkeepthebalancebetweensecurityandusability.
WhensettingaprotectiontoaPDFdocument,oneshouldkeepthefollowingpointsinmind:1.
targetaudience(allusers,orjustacertaingroup);2.
versionofAdobeAcrobat/AcrobatReaderavailable;3.
storagelocationorpublishinglocationofthedocument(companywebsite,intranet,orprint-ing-house);4.
datatype(text,graphics,multimedia);5.
presumableusageofthedocument(viewing,fillingforms,sendingbymail,editingorreviewing).
UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper6PDFdocumentsprotectionmethodsAdobeAcrobatfeaturestwolevelsofPDFpasswordprotection.
Protectingthedocumentwithaccessrestriction("owner",so-called"security"or"master")passworddoesnotaffectauser'sabilitytoopenandviewthePDFfile,butpreventsuserfromediting(changing)thefile,printingit,selectingtextandgraphics(andcopyingthemintotheClipboard),adding/changingannotationsandformfieldsetc(inanycombination).
Also,thereare"open"(so-called"user")passwords.
Ifoneisset,thefileisencryptedwithstrongalgorithm,andcannotbeopenedatall,ifthepass-wordorencryptionkeyisnotknown.
AdobeAcrobatusesRC4encryptionalgorithm(streamcipher,widely-usedbyvariousdatapro-tectionsystems),whileAdobeAcrobat7.
0andupwardscanalsouseAES(AdvancedEncryptionStandard).
Originally,40-bitencryptionhasbeenused,butversion5.
0andaboveuses128-bitencryption,whichmakesitmuchmoredifficulttofindapassword(40-bitencryptioninvolves240values,while128-bitencryptioninvolves2128values).
Inaddition,usingsecuritycertificatesallowscreatingdifferentaccess/usagerightsfordifferentusergroups.
Forinstance,someuserswillbeallowedtofillintheforms,whileusersfromanothergroupwillbeabletoeditthedocumentaswell.
Certificate-basedprotectionforAdobeAcrobatisbasedontwokeys:publickeyandprivatekey.
Theformeroneisusedtodecryptthefile,andthelastoneisusedfordocumentencryptionand/orsigningadocument.
UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper7DataaccesslossGooddocumentprotectionisadouble-edgedweapon.
WhyConfidentialdata,suchassalesreports,marketresearchresultsoranalyticreports,isstoredinPDFfiles,andalloperations(editing,printingandevenopeningafile)couldbepassword-protected.
Obviously,theweakestlinkofanyprotectiontechnologyisahuman.
Passwordprotectionisasubjectofvarious"flaws".
HowmanytimeshaveyouforgottenapasswordOnceyoumayneedtoaccessadocumentcreatedbyyourcolleagueorpartner,butthatpersoncouldhavequittedthejobortakenaleave.
WhatshouldbedoneYoucan'tceaseaprojectbecauseofsuchahindrance.
AndanotherproblemismorelikelytooccurwhenworkingwithPDFfiles.
Imagineyouneedtoextractapieceofinformationfromareporttopreparetenderdocuments,butyoufailtoselectandcopysometextfromafile.
Youobeycopyrightandalwaysrefertoasourceofinformation,butyouhavetopreparethedocumentsfortomorrow'stenderassoonaspossible.
Andhereistherub:youneedtoremoverestrictionssetforaPDFfile,ordecryptit(ifitrequirespasswordatopening)togetaccesstotheinformationandsolvecurrentbusinesstasks.
UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper8SolvingapuzzleAfewwordsaboutpasswordsSincetheproblemofpasswordlossfirstoccurredthedaypasswordprotectionwasinvented,softwaredevelopershaveconsideredawayoftacklingit.
Astheresult,anumberofpasswordrecoverytechnologiesareavailablenow.
Puttingasidetheissueofnowadayspasswordrecoverymethods,let'sstartwithbasicknowledgeaboutpasswords,passwordtypesandinformation,whichmayassistyouinfindingapassword.
Englishlanguagepasswordsgenerallyusethefollowingsymbols:26lowercaseletters(a…z),26uppercaseletters(A…Z),10digits(0…9)and33specificcharacters(!
@#$%^etc),whichmakes95symbolsforanycombinations.
Sometimesspecificsymbolsareexcludedfromthegroup,whichdecreasesthenumberofpossiblecombinations.
Moreover,passwordmaybeshortorlong,whichiscrucialwhenonecannotretrieveorresetapassword,buthastousethebrute-forceattack.
Understandinghumanmindalsocountsonaquestforapassword.
Inspiteofnumerousrestric-tionsforcedonuserstosecurepasswordprotection,someusersstillneglectthemostsimplesecuritytips.
Suchphenomenonprovesthathumanisaweaklink,adangerousbreachinsystemsecurity.
Themajorityofpopularpasswordsarenothingbutwords,derivedfromamothertongueofauser.
Sometimeswords,usedaspasswords,canbefoundinuser'sdailylife:birthyear,petname,phonenumber,creditcardnumberetc.
Anewpasswordcanbeaslightlymodifiedpreviouspassword.
Thisisthewaymostuserssolvetheproblemofregularpasswordchanging,prescribedbysecuritypolicy.
Andthemostimportanthint,peopletendtokeepapasswordnoterightataworkdeskorinafileonaPC.
Though,sucharemedyunderminesthewholeideaofpasswordprotection.
Thus,beingawareofbasicpasswordsecurityrequirements(suchaspasswordstructureorlength)orhavingsomeinformationaboutausermayhelpfindingapassword.
Technologies,appliedbyspecificsoftwaretorecoverpasswords,enableusingsuchkindofinformation.
UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper9PasswordrecoverymethodsThebasicmethodsofpasswordrecoveryarebruteforce,maskattack,dictionarysearch,en-cryptionkeysearch(lesspossiblecombinationsincomparisonwithbruteforce)andso-called"rainbowattack".
Sometimesothermethodsofrestoringaccesstoafileareused,forexample,known-plaintextattack.
Let'sreviewsomeofthemethodsbriefly.
BruteforceattackBruteforceattackissimple:insearchforapasswordaprogramtrieseverypossiblecombina-tionofsymbols.
Thesearchmayberestrictedtoacertainlengthandcharacterset(letters,digitsandothersymbols).
ButhowmuchtimedoesthebruteforceattackneedtorecoverapasswordItdependsonthefactorsmentionedabove(passwordlength,characterset),performanceofthePCusedforpasswordrecoverytask,andthefiletype.
Ofcourse,acorrectpasswordmaybefoundquicklyandaprogramwon'thavetotryallthepos-siblecombinations.
Butyoushouldn'tcountonthat.
Thetaskcantakeyears,ifranonanaveragePC.
Thebruteforceattack,asthemosttime-consumingmethod,mayberesortedto,whennoothermethodsareatthehand.
MaskattackInthecaseyoucreatedapasswordbyyourself,youmaytrytorecoverapasswordwithahelpofmaskattackbylimitingthesearchrange.
Youmightrememberthelengthofapasswordorsomeofthesymbols.
Anyinformationmaybeofusetoyou.
Forexample,youarequitesure,thatyouusedonlydigitsandlowercaseLatinletters.
Then,whensettingsearchparameters,youmayexcludespecificsymbolsanduppercaseletters.
Thatwouldbegreatifyoualsoknewacertainpositionofasymbolinapassword.
Forexample,apasswordconsistsof10symbols,startswithaletter"a"andendswith"2007",thanyoucanusea"a2007"searchpattern.
Unknownsymbolsaredesignatedwithquestionsmarksinthepattern.
Maskattackismakingsense:aprogramhastotryfewercombinations,soapasswordwillbefoundinlesstime.
It'sapity,butanydetailsaboutapasswordarerarelyknown,thusmaskattackcannotbeusedgenerally.
Fortunately,thereisonemoreefficientpasswordrecoverymethod.
UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper10DictionaryattackLet'sassumethatyoupossesssomeinformationaboutpossiblewordsornamesthatcouldbeusedinapassword.
Inthiscaseyoumayusethedictionaryattack.
Userstendresorttocommonwordsforcreatingpasswords.
Generally,theseareEnglishwordslike"open","access"or"letmein".
Incomparisonwithchaoticcombinationsoflettersanddigitssuchpasswordsareeasiertoremember.
Infact,suchpasswordsareaseasilyforgottenasanyotherpasswords,buttheyareeasiertorecover.
Wherethedictionary(orthewordlist)shouldbetakenfromFirst,itmaybeincludedintopass-wordrecoveryprogrampackage.
Second,youmaysearchforitontheInternet.
Variouslistsofcommonwords,thematiclists(fauna,footballteamsetc),abbreviationlistsarecommonlyavail-able.
Third,youcancreateadictionarymanually.
Themethodhasanumberofapparentadvantages.
Thelistofcommonwords,generallyusedinpasswords,islimited;itnevercontainsmorethanahundredthousandwords.
Tryinghun-dredthousandcombinationsisaneasytaskforamodernPC.
Itturnsoutthatdictionaryattackmethodshouldbeimplementedinthefirstplace.
Itmaydowell.
RainbowtableattackObviously,themostimportantcriterionofpasswordsearchisthecriterionoftime,consumedbythesearch.
Bruteforceattacktriesallpossiblecombinations,andrecoveryofcomplexpasswordsmaytaketoomuchtime.
Ifthesearchmaytakeupmonthsoryears,thanitspracticaluseiszero.
Amethodemployingrainbowtables(rainbowattack)isusedtoeliminatetheproblem.
Thebasisofthemethodisusingprecomputationsofpasswordvariantsforacertainsetofsymbols.
Theideaofreplacingresource-intensivecomputationswithasearchbyalookuptable,thatwaspreparedbeforehand,isnotbrandnew.
Lookuptablesareusedwhendataiseasierextractedfromthememory,ratherthancreated.
Themaindrawbackofalookuptableisitssize:noteveryenterprisecanaffordstoringterabytesofdata.
That'swhyrainbowtables,oroptimizedlookuptables,cameintobeing.
Thesizeofarainbowtableismuchless,thanofalookupone.
Generatingrainbowtablesmayhavepresetprobabilityofpasswordorkeyrecovery,suggestedtimeofattack,andtimeoftable'sgeneration.
Adjustingthesettingsandfindingagoodbalancebetweentheattacktimeandprobabilityofpassword/keyrecoveryshouldbeconsideredsepa-rately.
Asaresult,thetablesthathelptoquicklyfindthepassword/keyfromacertainrangewithahighprobabilityarecreatedinareasonabletime.
Incomparisonwithsimplelookuptables,theprobabilityofpasswordrecoveryusingrainbowattackisslightlylowerthan100%,buttheresultisstillworthtrying.
Forexample,rainbowattackbasedonatablefor7alphanumericsymbols(builtwithinaweek)allowsrecoveringanypass-wordconsistingofsevenalphanumericsymbolswithin20-30seconds.
Bruteforceattackwouldtakeupmorethan24hours.
Theadvantageisobvious.
UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper11ChoosingasolutionThusthere'renomoredoubtsinbuyingpasswordrecoverytool(forPDFfiles)ornot.
Obviously,everysystemadministratorshouldhavesuchtoolathand.
Theexpenseswillberepaidahun-dredfoldwhenthefirstpasswordismissed.
WhatpointsshouldbeconsideredinthiscaseFirst,theprobabilityofpasswordrecoveryclaimedbyasoftwareprovider.
Thecriterioniscrucialforestimatingsolutionefficiency.
Thisiswhyyoubuyit.
Ofcourse,100%probabilitymaybeguaranteedintheabsenceoftimeconstraints,butthispictureisnotgoodenoughforyou.
Asageneralrule,accesstoadocumenthastoberestoredassoonaspossible:timecounts.
Second,thenextpointtoconsiderisarangeofsupportedoperatingsystems,applicationver-sions,fileformats,languagesandencodings.
It'shardtotellwhatversionofAdobeAcrobatyou'llhavetodealwithwhenrecoveringapassword.
Makesureyouknowhowtogetanupgradewithsupportofnewerversions,andwhattimeframesuchupgradewillbeavailablein.
Third,considerthetimeneededforpasswordrecovery.
Ofcourse,itmaydependonperform-anceofyourPC,butasoftwareproviderusuallygivessome"average"data.
Andthelastpointiswhetherdistributedcomputingiseverpossible.
Thismethodofsolvingcom-plex(CPU-hungry)problemssuggestsusingtheunitedperformanceofacomputergroup,forexample,computersconnectedlocallyorremotely.
Themethodisemployedwhenhackingapassword.
Somepasswordsfordocumentsorapplicationsmayberecoveredinashortperiodoftimewithahelpofasinglecomputer(forexample,ICQpasswordsavedlocally,orapasswordtoWordPerfectdocument),butformanyothers,therecoveryhasmuchhigherrequirements.
Forexample,PGPpasswordsaresosafethathackingthemcouldbepossibleusingdistributedcomputingonly.
UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper12"ElcomSoft"solution–secureaccesstoPDF-filesRussiancompanyElcomSoftoffersawiderangeofpassword-recoverysolutionsforvirtuallyanysystemandfileformat:fromapplicationsandinstantmessengerstoarchivesandWindowslogonpasswords.
ElcomSofttakesadvantageofuniquetechnologiesandstaffexperiencedinthefieldofcryp-tography.
Itallowscreatinghigh-qualitypasswordrecoverysoftware.
Dependingonpasswordlength,complexityandencryptionmethodtheprobabilityofpasswordrecoveryamountsintonearly80%.
Butinmostcases,100%successrateisguaranteed.
ElcomSofthasdevelopedspecialsoftwaretorestoreaccesstoAdobeAcrobatfiles–AdvancedPDFPasswordRecovery.
Moreover,youcangetElcomsoftDistributedPasswordRecovery,whichallowstotakeadvantageofdistributedcomputingifthepasswordislongandwellse-lected.
AdvancedPDFPasswordRecoveryAdvancedPDFPasswordRecoverysupportsallversionsandencryptionmethodsusedbyAdobeAcrobat3.
0–8.
0,allowingtounlockingPDFfilesandremoverestrictions.
Featuresprovidedbytheprogramdependontheversion:Standard,Professional,andEnter-prise.
Standardeditionallowstoremovingeditingandprintingrestrictions.
Professionaleditioncanfindapasswordtoopenafile.
Enterpriseeditionfindsanencryptionkey(DVDwithrainbowtablesissupplied)withahelpofimprovedrainbowattack.
Let'sreviewbasicfeaturesoftheproduct.
A"user"password(requiredtoopenthefile)isoftenknownornotset.
Sotheonlythingtosearchforisan"owner"password,whichrestrictseditingandprintingoptions.
AdvancedPDFPass-wordRecoveryusesuniquetechnologytosolvethisproblem:itdoesnothavetotrypasswordcombinationsatall,butallowstodecryptingthedocumentregardlessofencryptionalgorithmandkeylength(seepic1).
If"user"issetbutunknown,AdvancedPDFPasswordRecoveryusesanumberofmethods:bruteforceattack,maskattack,dictionarysearchandexclusivetechnologyofkeysearch(seepic2).
Theprobabilityofpasswordrecoverybycommonmethods(bruteforceattackordiction-arysearch)generallyamountsto80%.
Inthemeantime,thekeysearchattackprovides100%successrate,butcanbeappliedonlytofileswith40-bitprotection.
UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper13AdvancedPDFPasswordRecoveryAdvancedPDFPasswordRecoverysupportsallversionsandencryptionmethodsusedbyAdobeAcrobat3.
0–8.
0,allowingtounlockingPDFfilesandremoverestrictions.
Featuresprovidedbytheprogramdependontheversion:Standard,Professional,andEnter-prise.
Standardeditionallowstoremovingeditingandprintingrestrictions.
Professionaleditioncanfindapasswordtoopenafile.
Enterpriseeditionfindsanencryptionkey(DVDwithrainbowtablesissupplied)withahelpofimprovedrainbowattack.
Let'sreviewbasicfeaturesoftheproduct.
A"user"password(requiredtoopenthefile)isoftenknownornotset.
Sotheonlythingtosearchforisan"owner"password,whichrestrictseditingandprintingoptions.
AdvancedPDFPass-wordRecoveryusesuniquetechnologytosolvethisproblem:itdoesnothavetotrypasswordcombinationsatall,butallowstodecryptingthedocumentregardlessofencryptionalgorithmandkeylength(seepic1).
If"user"issetbutunknown,AdvancedPDFPasswordRecoveryusesanumberofmethods:bruteforceattack,maskattack,dictionarysearchandexclusivetechnologyofkeysearch(seepic2).
Theprobabilityofpasswordrecoverybycommonmethods(bruteforceattackordiction-arysearch)generallyamountsto80%.
Inthemeantime,thekeysearchattackprovides100%successrate,butcanbeappliedonlytofileswith40-bitprotection.
Picture1.
RemovingrestrictionsfromaPDFfile.
UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaperIf"user"issetbutunknown,AdvancedPDFPasswordRecoveryusesanumberofmethods:bruteforceattack,maskattack,dictionarysearchandexclusivetechnologyofkeysearch(seepic2).
Theprobabilityofpasswordrecoverybycommonmethods(bruteforceattackordiction-arysearch)generallyamountsto80%.
Inthemeantime,thekeysearchattackprovides100%successrate,butcanbeappliedonlytofileswith40-bitprotection.
Apartfromprobabilityofpasswordrecovery,thespeedofrecoveryprocesscountsaswell.
Ad-vancedPDFPasswordRecoveryhasthebestresults:anaveragePCneedsonlyseveraldaystorestoreaccesstodocumentsprotectedbyuser-passwordandencryptedwith40-bitRC4.
Enterpriseeditionemploysrainbowattacktosolvetheprobleminjustafewminutes.
Programusespre-computedhashtables(suppliedonaDVD).
ThunderTables3technology,developedbyElcomSoft,allowsreaching100%probabilityoffindingthekey(andsodecryptingthefile).
Thetechnologyuseslookuptablesandrainbowtablesjointly,which,ononehand,guaranteessuccess(aswhenusingsimplelookuptables)and,ontheotherhand,takesonlyafewminutestocomplete.
Otherpartiesmayguaranteesuchresultsonlywhenusingfullsearchforanencryp-tionkey(takesseveraldays)orusingbulkylookuptables(afewterabytes).
3PatenttechnologyhasbeenclaimedPicture2.
Selectingfiledecryptionmethod.
14UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaper15Theamountofdecryptedfilesdependsonattackperiod(seepic3).
Halfofthefilesareopenedwithin10seconds.
Themaximumattacktimeis15minutes,andtheminimumisafractionofasecond;25secondsonanaverage.
Usingmoderncomputerwithmulti-coreprocessor(forexample,IntelCore2Duo)andreadingtablesfromaUSBflashcard(insteadofDVD)isrecommended.
TheprogramalsoallowstorestoreaccesstoPDFdocumentsprotectedby128-bitencryption(includingAdvancedEncryptionStandard)withahelpofbruteforceattack,maskattackanddictionarysearch.
Thetechnologyofkeysearchisnotappliedtofilesofthistype.
Theprogramoffersthebestworkingpatterndependingonaconfigurationofyourprocessor(Non-MMXprocessors,IntelPII/PIII/Celeron,AMDAthlon,IntelP4SSE2areenlisted).
ThehighestperformanceforCore,CoreDuoorCore2DuoprocessorsisgainedbyselectingIntelPII/PIII/Celeronfromthelist.
Trialversionoftheprogramcanhelptoestimateitsfeatures.
Thoughthefunctionalityislimited(recoveryof4-symbolpasswordanddecryptingfirst10%ofdocumentpages),itstillgivesacompleteimageoftheproduct.
Picture3.
TheamountofdecryptedPDFfilesVsperiodofattack.
0%1sec2sec5sec10sec20sec30sec1min2min5min10min15min10%20%30%40%50%60%70%80%90%100%UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaperPicture4.
MainwindowofElcomsoftDistributedPasswordRecovery(servercomponent).
ElcomSoftDistributedPasswordRecoveryTheadvantagesofusingdistributedcomputingwhensolvingcomplextaskshavebeendis-cussedearlier.
WhentalkingaboutPDFdocuments,youmayalsofacesuchtasks,especiallyifyoudealwithconsiderableamountofpaperwork,safepasswordsandadvancedencryptionalgorithms.
Aprogramconsistsofthreecomponents:server,agentandconsole.
Server(seepic4),installedonthecomputerinthelocalnetwork,controlsthebruteforceattack.
Agents,whichtrycertainsetsofpasswordcombinationssentbytheServer,maybeinstalledonallcomputersinthenet.
ConsolemaybelaunchedfromanycomputerandallowsdrivingtheServer,addingnewtasksandviewingstatistics.
ServerandAgenthavetrialversions.
16UnlockingPDF:guaranteedpasswordrecoveryforAdobeAcrobatwhitepaperAboutElcomSoftFoundedin1990inMoscow,Russia,ElcomSoftisaleaderinthepassword/systemrecoveryandforensicsmarket.
Thankstoone-of-a-kindtechnologies,ElcomSoft'sproductshavegarneredwiderecognitionbothinRussiaandabroad.
ElcomSoft'sclientsincludemanywellknowninternationalcompaniesfromthefollowingsectors:HighTech:Microsoft,Adobe,IBM,CiscoGovernmental:FBI,CIA,USArmy,USNavy,DepartmentofDefenceConsulting:AndersenConsulting,Deloitte&Touche,ErnstandYoung,KPMG,Pricewater-houseCoopersFinance:BankofAmerica,Citibank,Equifax,HSBC,WellsFargo,J.
P.
Morgan,CreditSuisseTelecommunications:FranceTelecom,BT,AT&TInsurance:Allianz,MitsuiSumitomoRetail:Wal-Mart,BestBuy,WoolworthMedia&Entertainment:SonyEntertainmentManufacturing:Volkswagen,Siemens,BoeingEnergy:Lukoil,StatoilPharmaceuticals:Johnson&Johnson,Pfizer,GlaxoSmithKline,NovartisElcomSoftisaMicrosoftGoldCertifiedPartner,IntelSoftwarePartner,aswellasamemberoftheRussianCryptologyAssociation,theComputerSecurityInstitute(CSI),andtheAssociationofSharewareProfessionals(ASP).
ElcomSoftisanacknowledgedexpertinthepassword/systemrecoveryandforensicsmarket.
Thecompany'stechnologicalachievementsandopinionleadershipisquotedinmanyauthori-tativepublications.
Forexample:"MicrosoftEncyclopediaofSecurity","Theartofdeception"(KevinMitnick),"ITAuditing:UsingControlstoProtectInformationAssets"(ChrisDavis),"Hack-ingexposed"(StuartMcClure).
Visitourwebsitetofindoutmore.
Address:ElcomsoftZvezdnybulvar21,office541129085Moscow,RussianFederationFax:US(toll-free):+1(866)448-2703UnitedKingdom:+44(870)831-2983Germany:+4918054820050734Websites:http://www.
elcomsoft.
ruhttp://www.
elcomsoft.
comhttp://www.
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dehttp://www.
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