ACAPsoft CryptIt v1.400 英文正式版(檔加密工具)





軟體簡介:



ACAPsoftCryptItv1.400英文正式版(文件加密工具)





內容說明:
CryptIt是一款文件加密工具，採用傳統的XOR加密技術，如果密鑰不洩漏，加密是不可破解的。

英文說明:
Mostfileencryptorsusemethodsthatrelyonthetheoryof
computationalsecurity,thatisthedifficultyofkey
factorisationpreventsdecryptionofthefile.Butthis
methodmaynotworkforever.Itusedtobeconsideredthata
56bitkeywasunbreakabletobruteforceattacks,butthe
governmentoftheUSAnowrequiresallTopSecretdatato
usekeysofatleast192bits.Thisbarwillkeepraisingas
computingpowerincreases.(Itisarguedbysomethoughthat
thiswillneverhappenduetothelawsofphysics!)CryptIt
isdesignedtouseconventionalXORencryptiononkeysthat
arethesamesizeasthefiletobeencrypted.Furthermore,
ifyouuseanunpredictablefilethatisthesamesize(or
larger)thantheoriginalfileandyouusethisfileonly
once,thisisknownasaone-timepadanditiscompletely
unbreakable,eventocomputers1000yearsfromnow.Thisis
becausethereisnoalgorithmatall,justabigkey,and
thusthereisnopatterntofollowonceyouhavedecrypted
anypartofthefile.Thusattemptstodecryptitcould
resultinanyfile,andtherewouldbenowaytoverifythat
ithasdecryptedcorrectly.CryptItcanalsohassome
conveniencefeaturessuchasbeingabletoautomaticallyuse
padfilesgeneratedbyourprogramGigAlarm,generatekey
files(fromastreamcipherandthusnotbestforOTPusage)
andalsoanalysethesuitabilityofyourchosenkeyfile.