Cryptoanalysismethodtosolvethekeyorsolvethecorrespondingplaintextfromtheinterceptedciphertextbyselectingthespecificplaintextanditscorrespondingciphertextthatarebeneficialtotheattack.Oneofthewaysofcryptanalysis.Whenchoosingaplaintextattack,thecryptanalysthastheabilitytoselectorcontroltheplaintext,andcanchooseanyplaintextanditscorrespondingciphertextthathethinksisbeneficialtotheattack.Thisisastrongerattackmethodthanknownplaintextattacks.Ifacryptographicsystemcanresistselectedplaintextattacks,itmustbeabletoresistciphertextonlyattacksandknownplaintextattacks.Choosingaplaintextattackismoredifficulttoachieve.Onescenarioistoassumethatthecryptanalystobtainsaccesstotheencryptionmachinetemporarily,buttheencryptionkeyissecurelyembeddedinthedevice,andtheanalystcannotobtainthekey.Inthiscase,alargenumberofselectedplaintextscanbeencrypted,andthenthegeneratedciphercanbeused.Texttoguessthekey.Thetypicalchoiceofplaintextattackmethodsincludecollisionattackanddifferentialattack.
Publisher:ChinaMilitaryEncyclopediaEditingOffice
