# ---------------------------------------- # - mode: python - # - author: helloplhm-qwq - # - name: kwdes.py - # - project: lx-music-api-server - # - license: MIT - # ---------------------------------------- # This file is part of the "lx-music-api-server" project. # Do not edit except you know what you are doing. # KuwoDES加密实现，CV过来的，不进行注释 # 下方为原文件版权声明，在此进行保留 # Copyright (C) 2014 LiuLang # Use of this source code is governed by GPLv3 license that can be found # in http://www.gnu.org/licenses/gpl-3.0.html import base64 DES_MODE_DECRYPT = 1 arrayE = [ 31, 0, DES_MODE_DECRYPT, 2, 3, 4, -1, -1, 3, 4, 5, 6, 7, 8, -1, -1, 7, 8, 9, 10, 11, 12, -1, -1, 11, 12, 13, 14, 15, 16, -1, - 1, 15, 16, 17, 18, 19, 20, -1, -1, 19, 20, 21, 22, 23, 24, -1, - 1, 23, 24, 25, 26, 27, 28, -1, -1, 27, 28, 29, 30, 31, 30, -1, -1 ] arrayIP = [ 57, 49, 41, 33, 25, 17, 9, DES_MODE_DECRYPT, 59, 51, 43, 35, 27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7, 56, 48, 40, 32, 24, 16, 8, 0, 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6 ] arrayIP_1 = [ 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, DES_MODE_DECRYPT, 41, 9, 49, 17, 57, 25, 32, 0, 40, 8, 48, 16, 56, 24 ] arrayLs = [1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1] arrayLsMask = [0, 0x100001, 0x300003] arrayMask = [2 ** i for i in range(64)] arrayMask[-1] *= -1 arrayP = [ 15, 6, 19, 20, 28, 11, 27, 16, 0, 14, 22, 25, 4, 17, 30, 9, 1, 7, 23, 13, 31, 26, 2, 8, 18, 12, 29, 5, 21, 10, 3, 24, ] arrayPC_1 = [ 56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3, ] arrayPC_2 = [ 13, 16, 10, 23, 0, 4, -1, -1, 2, 27, 14, 5, 20, 9, -1, -1, 22, 18, 11, 3, 25, 7, -1, -1, 15, 6, 26, 19, 12, 1, -1, -1, 40, 51, 30, 36, 46, 54, -1, -1, 29, 39, 50, 44, 32, 47, -1, -1, 43, 48, 38, 55, 33, 52, -1, -1, 45, 41, 49, 35, 28, 31, -1, -1, ] matrixNSBox = [[ 14, 4, 3, 15, 2, 13, 5, 3, 13, 14, 6, 9, 11, 2, 0, 5, 4, 1, 10, 12, 15, 6, 9, 10, 1, 8, 12, 7, 8, 11, 7, 0, 0, 15, 10, 5, 14, 4, 9, 10, 7, 8, 12, 3, 13, 1, 3, 6, 15, 12, 6, 11, 2, 9, 5, 0, 4, 2, 11, 14, 1, 7, 8, 13, ], [ 15, 0, 9, 5, 6, 10, 12, 9, 8, 7, 2, 12, 3, 13, 5, 2, 1, 14, 7, 8, 11, 4, 0, 3, 14, 11, 13, 6, 4, 1, 10, 15, 3, 13, 12, 11, 15, 3, 6, 0, 4, 10, 1, 7, 8, 4, 11, 14, 13, 8, 0, 6, 2, 15, 9, 5, 7, 1, 10, 12, 14, 2, 5, 9, ], [ 10, 13, 1, 11, 6, 8, 11, 5, 9, 4, 12, 2, 15, 3, 2, 14, 0, 6, 13, 1, 3, 15, 4, 10, 14, 9, 7, 12, 5, 0, 8, 7, 13, 1, 2, 4, 3, 6, 12, 11, 0, 13, 5, 14, 6, 8, 15, 2, 7, 10, 8, 15, 4, 9, 11, 5, 9, 0, 14, 3, 10, 7, 1, 12, ], [ 7, 10, 1, 15, 0, 12, 11, 5, 14, 9, 8, 3, 9, 7, 4, 8, 13, 6, 2, 1, 6, 11, 12, 2, 3, 0, 5, 14, 10, 13, 15, 4, 13, 3, 4, 9, 6, 10, 1, 12, 11, 0, 2, 5, 0, 13, 14, 2, 8, 15, 7, 4, 15, 1, 10, 7, 5, 6, 12, 11, 3, 8, 9, 14, ], [ 2, 4, 8, 15, 7, 10, 13, 6, 4, 1, 3, 12, 11, 7, 14, 0, 12, 2, 5, 9, 10, 13, 0, 3, 1, 11, 15, 5, 6, 8, 9, 14, 14, 11, 5, 6, 4, 1, 3, 10, 2, 12, 15, 0, 13, 2, 8, 5, 11, 8, 0, 15, 7, 14, 9, 4, 12, 7, 10, 9, 1, 13, 6, 3, ], [ 12, 9, 0, 7, 9, 2, 14, 1, 10, 15, 3, 4, 6, 12, 5, 11, 1, 14, 13, 0, 2, 8, 7, 13, 15, 5, 4, 10, 8, 3, 11, 6, 10, 4, 6, 11, 7, 9, 0, 6, 4, 2, 13, 1, 9, 15, 3, 8, 15, 3, 1, 14, 12, 5, 11, 0, 2, 12, 14, 7, 5, 10, 8, 13, ], [ 4, 1, 3, 10, 15, 12, 5, 0, 2, 11, 9, 6, 8, 7, 6, 9, 11, 4, 12, 15, 0, 3, 10, 5, 14, 13, 7, 8, 13, 14, 1, 2, 13, 6, 14, 9, 4, 1, 2, 14, 11, 13, 5, 0, 1, 10, 8, 3, 0, 11, 3, 5, 9, 4, 15, 2, 7, 8, 12, 15, 10, 7, 6, 12, ], [ 13, 7, 10, 0, 6, 9, 5, 15, 8, 4, 3, 10, 11, 14, 12, 5, 2, 11, 9, 6, 15, 12, 0, 3, 4, 1, 14, 13, 1, 2, 7, 8, 1, 2, 12, 15, 10, 4, 0, 3, 13, 14, 6, 9, 7, 8, 9, 6, 15, 1, 5, 12, 3, 10, 14, 5, 8, 7, 11, 0, 4, 13, 2, 11, ], ] SECRET_KEY = b'ylzsxkwm' def bit_transform(arr_int, n, l): l2 = 0 for i in range(n): if arr_int[i] < 0 or (l & arrayMask[arr_int[i]] == 0): continue l2 |= arrayMask[i] return l2 def DES64(longs, l): out = 0 SOut = 0 pR = [0] * 8 pSource = [0, 0] sbi = 0 t = 0 L = 0 R = 0 out = bit_transform(arrayIP, 64, l) pSource[0] = 0xFFFFFFFF & out pSource[1] = (-4294967296 & out) >> 32 for i in range(16): R = pSource[1] R = bit_transform(arrayE, 64, R) R ^= longs[i] for j in range(8): pR[j] = 255 & R >> j * 8 SOut = 0 for sbi in range(7, -1, -1): SOut <<= 4 SOut |= matrixNSBox[sbi][pR[sbi]] R = bit_transform(arrayP, 32, SOut) L = pSource[0] pSource[0] = pSource[1] pSource[1] = L ^ R pSource = pSource[::-1] out = -4294967296 & pSource[1] << 32 | 0xFFFFFFFF & pSource[0] out = bit_transform(arrayIP_1, 64, out) return out def sub_keys(l, longs, n): l2 = bit_transform(arrayPC_1, 56, l) for i in range(16): l2 = ((l2 & arrayLsMask[arrayLs[i]]) << 28 - arrayLs[i] | (l2 & ~arrayLsMask[arrayLs[i]]) >> arrayLs[i]) longs[i] = bit_transform(arrayPC_2, 64, l2) j = 0 while n == 1 and j < 8: l3 = longs[j] longs[j], longs[15-j] = longs[15-j], longs[j] j += 1 def encrypt(msg, key=SECRET_KEY): if isinstance(msg, str): msg = msg.encode() if isinstance(key, str): key = key.encode() assert (isinstance(msg, bytes)) assert (isinstance(key, bytes)) # 处理密钥块 l = 0 for i in range(8): l = l | key[i] << i * 8 j = len(msg) // 8 # arrLong1 存放的是转换后的密钥块, 在解密时只需要把这个密钥块反转就行了 arrLong1 = [0] * 16 sub_keys(l, arrLong1, 0) # arrLong2 存放的是前部分的明文 arrLong2 = [0] * j for m in range(j): for n in range(8): arrLong2[m] |= msg[n + m * 8] << n * 8 # 用于存放密文 arrLong3 = [0] * ((1 + 8 * (j + 1)) // 8) # 计算前部的数据块(除了最后一部分) for i1 in range(j): arrLong3[i1] = DES64(arrLong1, arrLong2[i1]) # 保存多出来的字节 arrByte1 = msg[j*8:] l2 = 0 for i1 in range(len(msg) % 8): l2 |= arrByte1[i1] << i1 * 8 # 计算多出的那一位(最后一位) arrLong3[j] = DES64(arrLong1, l2) # 将密文转为字节型 arrByte2 = [0] * (8 * len(arrLong3)) i4 = 0 for l3 in arrLong3: for i6 in range(8): arrByte2[i4] = (255 & l3 >> i6 * 8) i4 += 1 return arrByte2 def base64_encrypt(msg): b1 = encrypt(msg) b2 = bytearray(b1) s = base64.encodebytes(b2) return s.replace(b'\n', b'').decode()