ADSL拨号VPS包含了中国大陆（联通，移动，电信，）

中国香港，国外拨号VPS。

#coding=utf-8  from functools import partial  import base64 class DES(object):    """   DES加密算法   interface: input_key(s, base=10), encode(s), decode(s)   """    __ip = [      58,50,42,34,26,18,10,2,60,52,44,36,28,20,12,4,      62,54,46,38,30,22,14,6,64,56,48,40,32,24,16,8,      57,49,41,33,25,17, 9,1,59,51,43,35,27,19,11,3,      61,53,45,37,29,21,13,5,63,55,47,39,31,23,15,7,    ]    __ip1 = [      40,8,48,16,56,24,64,32,39,7,47,15,55,23,63,31,      38,6,46,14,54,22,62,30,37,5,45,13,53,21,61,29,      36,4,44,12,52,20,60,28,35,3,43,11,51,19,59,27,      34,2,42,10,50,18,58,26,33,1,41, 9,49,17,57,25,    ]    __e = [      32, 1, 2, 3, 4, 5,      4 , 5, 6, 7, 8, 9,      8 , 9,10,11,12,13,      12,13,14,15,16,17,      16,17,18,19,20,21,      20,21,22,23,24,25,      24,25,26,27,28,29,      28,29,30,31,32, 1,    ]    __p = [      16, 7,20,21,29,12,28,17,      1 ,15,23,26, 5,18,31,10,      2 ,8 ,24,14,32,27, 3, 9,      19,13,30, 6,22,11, 4,25,    ]    __s = [      [      0xe,0x4,0xd,0x1,0x2,0xf,0xb,0x8,0x3,0xa,0x6,0xc,0x5,0x9,0x0,0x7,    0x0,0xf,0x7,0x4,0xe,0x2,0xd,0x1,0xa,0x6,0xc,0xb,0x9,0x5,0x3,0x8,    0x4,0x1,0xe,0x8,0xd,0x6,0x2,0xb,0xf,0xc,0x9,0x7,0x3,0xa,0x5,0x0,    0xf,0xc,0x8,0x2,0x4,0x9,0x1,0x7,0x5,0xb,0x3,0xe,0xa,0x0,0x6,0xd,    ],      [      0xf,0x1,0x8,0xe,0x6,0xb,0x3,0x4,0x9,0x7,0x2,0xd,0xc,0x0,0x5,0xa,    0x3,0xd,0x4,0x7,0xf,0x2,0x8,0xe,0xc,0x0,0x1,0xa,0x6,0x9,0xb,0x5,    0x0,0xe,0x7,0xb,0xa,0x4,0xd,0x1,0x5,0x8,0xc,0x6,0x9,0x3,0x2,0xf,    0xd,0x8,0xa,0x1,0x3,0xf,0x4,0x2,0xb,0x6,0x7,0xc,0x0,0x5,0xe,0x9,    ],      [      0xa,0x0,0x9,0xe,0x6,0x3,0xf,0x5,0x1,0xd,0xc,0x7,0xb,0x4,0x2,0x8,    0xd,0x7,0x0,0x9,0x3,0x4,0x6,0xa,0x2,0x8,0x5,0xe,0xc,0xb,0xf,0x1,    0xd,0x6,0x4,0x9,0x8,0xf,0x3,0x0,0xb,0x1,0x2,0xc,0x5,0xa,0xe,0x7,    0x1,0xa,0xd,0x0,0x6,0x9,0x8,0x7,0x4,0xf,0xe,0x3,0xb,0x5,0x2,0xc,    ],      [      0x7,0xd,0xe,0x3,0x0,0x6,0x9,0xa,0x1,0x2,0x8,0x5,0xb,0xc,0x4,0xf,    0xd,0x8,0xb,0x5,0x6,0xf,0x0,0x3,0x4,0x7,0x2,0xc,0x1,0xa,0xe,0x9,    0xa,0x6,0x9,0x0,0xc,0xb,0x7,0xd,0xf,0x1,0x3,0xe,0x5,0x2,0x8,0x4,    0x3,0xf,0x0,0x6,0xa,0x1,0xd,0x8,0x9,0x4,0x5,0xb,0xc,0x7,0x2,0xe,    ],      [      0x2,0xc,0x4,0x1,0x7,0xa,0xb,0x6,0x8,0x5,0x3,0xf,0xd,0x0,0xe,0x9,    0xe,0xb,0x2,0xc,0x4,0x7,0xd,0x1,0x5,0x0,0xf,0xa,0x3,0x9,0x8,0x6,    0x4,0x2,0x1,0xb,0xa,0xd,0x7,0x8,0xf,0x9,0xc,0x5,0x6,0x3,0x0,0xe,    0xb,0x8,0xc,0x7,0x1,0xe,0x2,0xd,0x6,0xf,0x0,0x9,0xa,0x4,0x5,0x3,    ],      [      0xc,0x1,0xa,0xf,0x9,0x2,0x6,0x8,0x0,0xd,0x3,0x4,0xe,0x7,0x5,0xb,    0xa,0xf,0x4,0x2,0x7,0xc,0x9,0x5,0x6,0x1,0xd,0xe,0x0,0xb,0x3,0x8,    0x9,0xe,0xf,0x5,0x2,0x8,0xc,0x3,0x7,0x0,0x4,0xa,0x1,0xd,0xb,0x6,    0x4,0x3,0x2,0xc,0x9,0x5,0xf,0xa,0xb,0xe,0x1,0x7,0x6,0x0,0x8,0xd,    ],      [      0x4,0xb,0x2,0xe,0xf,0x0,0x8,0xd,0x3,0xc,0x9,0x7,0x5,0xa,0x6,0x1,    0xd,0x0,0xb,0x7,0x4,0x9,0x1,0xa,0xe,0x3,0x5,0xc,0x2,0xf,0x8,0x6,    0x1,0x4,0xb,0xd,0xc,0x3,0x7,0xe,0xa,0xf,0x6,0x8,0x0,0x5,0x9,0x2,    0x6,0xb,0xd,0x8,0x1,0x4,0xa,0x7,0x9,0x5,0x0,0xf,0xe,0x2,0x3,0xc,    ],      [      0xd,0x2,0x8,0x4,0x6,0xf,0xb,0x1,0xa,0x9,0x3,0xe,0x5,0x0,0xc,0x7,    0x1,0xf,0xd,0x8,0xa,0x3,0x7,0x4,0xc,0x5,0x6,0xb,0x0,0xe,0x9,0x2,    0x7,0xb,0x4,0x1,0x9,0xc,0xe,0x2,0x0,0x6,0xa,0xd,0xf,0x3,0x5,0x8,    0x2,0x1,0xe,0x7,0x4,0xa,0x8,0xd,0xf,0xc,0x9,0x0,0x3,0x5,0x6,0xb,    ],    ]    __k1 = [      57,49,41,33,25,17, 9,      1 ,58,50,42,34,26,18,      10, 2,59,51,43,35,27,      19,11, 3,60,52,44,36,      63,55,47,39,31,23,15,      7 ,62,54,46,38,30,22,      14, 6,61,53,45,37,29,      21,13, 5,28,20,12, 4,    ]    __k2 = [      14,17,11,24, 1, 5, 3,28,      15, 6,21,10,23,19,12, 4,      26, 8,16, 7,27,20,13, 2,      41,52,31,37,47,55,30,40,      51,45,33,48,44,49,39,56,      34,53,46,42,50,36,29,32,    ]    __k0 = [      1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1,    ]    __hex_bin = {      '0':'0000','1':'0001','2':'0010','3':'0011',      '4':'0100','5':'0101','6':'0110','7':'0111',      '8':'1000','9':'1001','a':'1010','b':'1011',      'c':'1100','d':'1101','e':'1110','f':'1111',      ' ':'0000'    }    __re = lambda t, s: ''.join(s[i-1] for i in t)    __IP = partial(__re, __ip)    __IP1 = partial(__re, __ip1)    __E = partial(__re, __e)    __P = partial(__re, __p)    __K1 = partial(__re, __k1)    __K2 = partial(__re, __k2)    __B = partial( lambda hex_bin, s: ''.join(hex_bin[w]      for w in ''.join('%2x' % ord(w) for w in s))      , __hex_bin)    __DB = partial( lambda s: ''.join(chr(int(s[i:i+8], 2)) for i in range(0, len(s), 8)))    __S = partial( lambda hex_bin, __s, s: ''.join(hex_bin['%x' % __s[i][      int(s[i*6]+s[i*6+5], 2)*16 + int(s[i*6+1:i*6+5], 2)]] for i in range(8))      , __hex_bin, __s)    __F = partial( lambda s, k: ''.join('0' if s[i]==k[i] else '1' for i in range(len(s))))    __K0 = partial( lambda k0, K2, k: map(K2,      (k[k0[i]:28]+k[0:k0[i]] + k[k0[i]+28:56]+k[28:k0[i]+28] for i in range(16)))      , __k0, __K2)    __K = partial( lambda K1, K0, k: K0(K1(k))      , __K1, __K0)    def __init__(self):      pass    def input_key(self, key, base=10):      if base == 2:        pass      elif base == 16:        key = ''.join(self.__class__.__hex_bin[w] for w in key)      else:        key = self.__class__.__B(key)      self.__k = self.__class__.__K(key)    def __code(self, s, k):      s = self.__IP(s)      l, r = s[0:32], s[32:64]      for i in range(16):        r_t = r        r = self.__E(r)        r = self.__F(r, k[i])        r = self.__S(r)        r = self.__P(r)        r = self.__F(r, l)        l = r_t      return self.__class__.__IP1(r+l)    def encode(self, s):      a = ''      s += ' ' * ((8-len(s)%8)%8)      for i in range(0, len(s), 8):        before = self.__class__.__B(s[i:i+8])        after = self.__code(before, self.__k)        a += '%16x' % int(after, 2)      return ''.join(w if w!=' ' else '0' for w in a)    def decode(self, s):      a = ''      s.lower()      for i in range(0, len(s), 16):        before = ''.join(self.__class__.__hex_bin[s[j]] for j in range(i, i+16))        after = self.__code(before, self.__k[::-1])        a += self.__class__.__DB(after)      return a.rstrip().decode('utf-8')  if __name__ == '__main__':    d = DES()    d.input_key('123456789')    s = '再来一段中文'    a = d.encode(s)    print a   b = d.decode(a)   print b

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