單項(xiàng)選擇題

Stream ciphers run on which of the following？（）

A.Fixed-length groups of digits called blocks
B.Individual blocks，one at a time，with the transformations varying during the encryption
C.Individual digits，one at a time，with the transformations varying during the encryption
D.Fixed-length groups of bits called blocks

微信掃碼免費(fèi)搜題