1.第一步是偽加密，用360壓縮可無視。

python2：

# -*- coding: cp936 -*-

b64chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'

with open('1.txt', 'rb') as f:

????bin_str = ''

????for line in f.readlines():

????????stegb64 = ''.join(line.split())

????????rowb64 = ''.join(stegb64.decode('base64').encode('base64').split())

? ? ? ? offset = abs(b64chars.index(stegb64.replace('=', '')[-1]) - b64chars.index(rowb64.replace('=', '')[-1]))

????????equalnum = stegb64.count('=')??# no equalnum no offset

????????if equalnum:

????????????bin_str += bin(offset)[2:].zfill(equalnum * 2)

????????print ''.join([chr(int(bin_str[i:i + 8], 2)) for i in xrange(0, len(bin_str), 8)])??# 8位一組