Assign 2 - InetSec Crypto Secret and Public Key Cryptography密钥和公钥的密码技术 1.How many DES keys, on the average, encrypt a particular plaintext block to a particular cipher-text block? Kaufman 3.3 (10 points)一般来说，把一段详细的评述文字加密成一段加密文字，需要多少位DES 密码？答：DSE一般采用56位长度的Key，所以总共有256种可能，这个数字大约是7.2X1016。2.Suppose the DES mangler function mapped every 32-bit value to zero, r
