Allthreetypesofcryptographyschemeshaveuniquefunctionmappingtospecific.Forexample,thesynunetrickey(71)approachistypicallyusedfortheencryptionofdataprovidmg(72),whereasasymmetrickeycryptographyismaidyusedinkey(73)andnoruepudiation,therebyprovidingconfidentialityandauthentication.Thehash(74)(noncryptic),ontheotherhand,doesnotprovideconfidentialitybutprovidesmessageintegrity,andcryptographichashalgorithmsprovidemessage(75)andidentityofpeersduringtransportoverinsecurechannels. 请作答72题。
A.Conduction B.confidence C.confidentiality D.connection正确答案C
