76 lines
1.7 KiB
Python
76 lines
1.7 KiB
Python
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import sys
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import os
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import shutil
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encryptTypes = [ ".json", ".txt", ".text", ".xml", ".js", ".jsc", ".png", ".jpg", ".jpeg", ".tga", ".bmp" ]
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class ffEncrypt(object):
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def __init__(self, key ):
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self.mKey = key
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def build( self, res, dest ):
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keyLength = len(self.mKey)
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if None == self.mKey or 0 == keyLength:
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return False
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if not os.path.exists(res):
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return False
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s = res.lower().replace('\\', '/')
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lastSplit = s.rfind('/')
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if -1 != lastSplit:
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s = s[lastSplit + 1:]
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# Fmt Check
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NeedEncrypt = False
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for suffix in encryptTypes:
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if s.endswith( suffix ):
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NeedEncrypt = True
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break
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if not NeedEncrypt:
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shutil.copy( res, dest )
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return True
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with open(res, 'rb') as f:
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resBytes = f.read()
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resBytesLen = len(resBytes)
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if 0 == resBytesLen:
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return False
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hashVal = ffEncrypt.get_hash(s)
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hashAry = [
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hashVal & 0xff,
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(hashVal >> 8) & 0xff,
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(hashVal >> 16) & 0xff,
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(hashVal >> 24) & 0xff
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]
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realKey = bytearray()
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for k in range(0,keyLength):
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realKey.append( ord(self.mKey[k] ) ^ hashAry[ k % 4 ] )
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BA = bytearray(resBytes)
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for i in range(0,resBytesLen):
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BA[i] = BA[i] ^ realKey[ i % keyLength]
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with open(dest, 'wb') as f:
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f.write(BA)
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return True
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@staticmethod
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def get_hash(src):
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result = 0
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srcLength = len(src)
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for i in range(0,srcLength):
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result = int(((result << 5) + result) + ord(src[i])) & 0xffffffff
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return result
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