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WGU C839 Objective Assessment Study (New 2024/ 2025 Update) Introduction to Cryptography| Guide with Qs & As| Grade A| 100% Correct (Verified Answers) $10.99   Add to cart
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WGU C839 Objective Assessment Study (New 2024/ 2025 Update) Introduction to Cryptography| Guide with Qs & As| Grade A| 100% Correct (Verified Answers)
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WGU C839 Objective Assessment Study (New 2024/ 2025 Update) Introduction to Cryptography| Guide with Qs & As| Grade A| 100% Correct (Verified Answers)

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  • October 17, 2024
  • 75
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • c839
  • wgu c839 objective assessment study new 2024 20
  • wgu c839c839 introduction to cryptographyc839 oa
  • c839wgu c839 introduction to cryptographyc839 pa
  • c839c839 introduction to cryptographywgu c839 oa

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  • WGU C839

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WGUIC839IObjectiveIAssessmentIStudy
I(NewI2024/I2025IUpdate)IIntroductionItoI
Cryptography|IGuideIwithIQsI&IAs|IGradeI
A|I100%ICorrectI(VerifiedIAnswers)

QUESTION
HashIFunction

Answer:
-
OneIwayImathematicalIoperationIthatIreducesIaImessageIorIdataIfileIintoIaIsmallerIfixedIlengt
hIoutput,IorIHashIvalue.
-IOne-
WayImathematicalIoperationIthatIreducesIaImessageIorIdataIfileIintoIaIsmallerIfixedIlengthIout
putIaIfunctionIthatIisIdeterministicIbutIrandomizing,Ii.e.IwhoseIoutputIisIaIrelativelyIsmallIinte
gerIthatIappearsItoIbeIaIrandomIfunctionIofItheIkeyIvalue.
-AnIalgorithmIthatIproducesIaIfixed-lengthInumberIcalledIaIhashIorImessageIdigest

QUESTION
HashIValueIequation

Answer:
DI+IHAI=IHashIValue
DI=IVariableIDataIinputI(ofIanyIsize)
HAI=IHashIAlgorithm
HVI=IFixedIbitIstreamIoutput

QUESTION
TypesIofIHashIFunctions

Answer:
-MD5
-SHA1
-MD4

,-FORK-256
-RIPEMD160
-Gost
-TIGER

QUESTION
BitIsizeIforIMD5

Answer:
-128Ibits

QUESTION
BitIsizeIforISHA1

Answer:
-160Ibits

QUESTION
SaltingItheIHash

Answer:
-RefersItoItheIrandomIbutsIthatIareIusedIasIoneIofItheIinputsItoItheIhash
-TheIsaltIisIintermixedIwithItheImessageIthatIisItoIbeIhashed.
-VeryIeffectiveIagainstIrainbowIattacks
-
SaltIvalueIshouldIkeptIsecretIinIorderItoImaximizeIitsIpositiveIimpactIonItheIsecurityIofItheIse
cretIdata

QUESTION
RIPEMD-160

Answer:
-IRACEIIntergratedIPrimitivesIEvaluationIMessageIDigest
-DevelopedIbyIDobbertin,IBosselaersIandIPreneel
-AImessageIdigestIalgorithmIthatIproducesIaI160-
bitIhashIvalueIafterIperformingI160IroundsIofIcomputationsIonI512-bitIblocks.
-VariableILengthIBlocks
-DigestISize,I128,I160,I256,I320Ibits

QUESTION

,GOST

Answer:
-RussianInationalIstandardIGOSTIRI34.11-94
-HashIvalueIofI256Ibits
-ProcessesIaIvariable-lengthImessageIintoIaIfixedIlengthIoutputIofI256Ibits

QUESTION
TIGER

Answer:
-DesignedIbyIAndersonIandIBihamIinI1995
-HashIvalueIisI192Ibits

QUESTION
BinaryIMathIOperatons

Answer:
-IAND
-OR
-XORI(ExclusiveIOR)

QUESTION
BinaryIAND

Answer:
-IfIbothInumbersIhaveIaIoneIinItheIsameIplace,IthenItheIresultantInumberIisIaIone.I
-IfInotIthenIitIisIaIzero
1stInumberI-I1100
2ndInumberI-I0100
--------------------------
ResultI-I0100

QUESTION
BinaryIOR

Answer:
-ChecksItoIseeIwhetherIthereIisIaIoneIinIeitherIorIbothInumbersIinIaIgivenIplace.I
-IfIso,IthenItheIresultantInumberIisIone.I
-IfInot,ItheIresultantInumberIisIzero.

, 1stI-I1010
2ndI-I0100
==============
ResultI-I1110

QUESTION
BinaryIXOR

Answer:
-(ExclusiveIOR)
-
TheIbinaryIXORIoperationI(alsoIknownIasItheIbinaryIXORIfunction)IwillIalwaysIproduceIaI1I
outputIifIeitherIofIitsIinputsIisI1IandIwillIproduceIaI0IoutputIifIbothIofIitsIinputsIareI0IorI1.I
1stI-I1110
2ndI-I0101
==============
ResultI-I1011
-XORingIisIreversible.I
-IfIyouIXORItheIresultantInumberIwithItheIsecondInumber,IyouIgetIbackItheIfirstInumber.I
-
Conversely,IIfIyouIXORItheIresultantInumberIwithItheIfirstInumber,IyouIgetItheIsecondInumb
er.

QUESTION
WhatIareItheItwoIprocessesIofISymmetricIKeyIEncryption

Answer:
-Substitution
-Transposition

QUESTION
SubstitutionIprocess

Answer:
-IIsIaccomplishedIbyIXORingItheIplaintextImessageIwithItheIkey

QUESTION
TranspositionIprocess

Answer:

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