XOR-decrypt is a simple tool which allows you to find a key for a xor cipher, using which some text was encrypted. It automatically finds the length of the key, and the key itself. During the work it shows you all probable key lengths, probable keys and decrypted text samples.
- -i --input-file File with encrypted text.
- -o --output-file File for decrypted text.
- -m --maxlen The maximum length of the key.
- -l --keylen The length of the key.
- -k --key The key for the xor cipher.
- -f --most-frequent The most frequent byte in the decrypted version of the given file type.
- -d --decrypt Decrypt the file and save to output.
- -h --help Show this message.
You can combine the options as you wish, but here are the most handy ones:
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To find the key automatically and decrypt the text:
xor-decrypt.py -i "i.txt" -o "o.txt" -m 32 -f 32 -d -
To find most probable key lengths and keys:
xor-decrypt.py -i "i.txt" -m 32 -f 32 -
To find the key with a given length:
xor-decrypt.py -i "i.txt" -l 10 -f 32 -
To decrypt the text with the given key:
xor-decrypt.py -i "i.txt" -o "o.txt" -k 123 -d