er Monoalphabetic Cipher Security now have a total of 26! 4 x 1026 keys with so many keys, might think is secure but would be ! wrong!!! problem is language characteristics 復大辱软件学院 LiJTLiJT 7 Monoalphabetic Cipher Security • now have a total of 26! = 4 x 1026 keys • with so many keys, might think is secure • • but would be !!!WRONG!!! • problem is language characteristics