StreamCiphers1StreamCiphersStreamCiphers2StreamCiphersfone-timepadsecurityforpracticalityinitializedwithshortkeyd〞intolongkeystreamedlikeaone-timepadordecryptakeystreamgeneratoramisbits,sometimesbytesStreamCiphers3StreamCipherstreamCiphers4ShiftRegistersally,StreamCipherswerebasedonshiftregisterswidervarietyofdesignssterincludesfstageseachholdingonebitkfunctioneedbackshiftregister(LFSR)hasalin...