Created
November 23, 2017 13:01
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''' | |
This script will XOR encrypt the files in specified directory. | |
If you want to recover the encrypted files, simply run the script again with same XOR key. | |
''' | |
import os | |
import binascii | |
key = "This is the key" | |
key = binascii.hexlify(key) | |
key_hex = [] | |
path = "/foo/bar/" | |
enc = "" | |
dir_list = os.listdir(path) | |
for file in dir_list: | |
if not os.path.isdir(path + file): | |
fout = open(path + file, 'rb') | |
file_data = binascii.hexlify(fout.read()) | |
fout.close() | |
for a, b in zip(key[::2], key[1::2]): ## get 2chars each from hex and join | |
key_hex.append(''.join(a + b)) | |
cnt = 0 | |
for a, b in zip(file_data[::2], file_data[1::2]): ## get 2chars from hex and join | |
rawdata = ''.join(a + b) | |
if cnt >= len(key_hex): ## when the key gets to end, reset the key to beginning | |
cnt = 0 | |
enc += hex(int(rawdata, 16) ^ int(key_hex[cnt], 16)).replace('0x', '').zfill(2) | |
cnt += 1 | |
## I put zfill because I didn't want to lose the leading zero in hex | |
## eg) 0xd -> 0x0d (this is what I want) | |
fin = open(path + file, 'wb') | |
fin.write(binascii.unhexlify(enc)) | |
fin.close() | |
enc = "" | |
print("Encrypted!") |
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