Hash函数MD5攻击技术研究(3)
时间:2025-07-11
时间:2025-07-11
Hash函数MD5攻击技术研究
Abstract
Hashfunctionis
widelyappliedintheaveryimportantandbasictoolinthefieldofinformationsecurity,areasofthedigitalsignatureandidentityauthentication.MD5
aalgorithm,asamemberofHashfunctionfamily,istypicalrepresentativeofMD
structureandwideusedininformationsecurity.Therefore,itishelpfultogetthebasicanalysismethodofHashfunctionstoattackotherHashfunctionsthroughtheresearchofMD5algorithm.
AttacktechnologyofMD5algorithm
analyzeisanalyzedandresearcheddeeplyinthisofMD5issummarized.Thepaper.Firstofall,themainideaofcollisionattackbit-tracking
thetechnologyisusedtoandcontrolthedifferentialpaths.Meanwhile,toimprovethepossibilityofmessagemodificationtechnologyistakenadvantageof
searchingthemessagesforcollision.Secondly,theconstruction
andtheoftheinitialstructureandtheskippingstepsisproposedtechnologyandmethodofpreimageattackof
MD5isanalyzedindetail.Finally,theperformancesoftheHashfunctionsaresummedupandthefurtherresearchdirectioniSintroduced.
Keywords:HashfunctionMD5CollisionattackPreimageattack
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