mirror of https://github.com/dirtbags/moth.git
42 lines
944 B
Python
42 lines
944 B
Python
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from socket import *
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from hashlib import md5
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import sys
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plaintext = open('clever_girl.jpg', 'rb').read()
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try:
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src_port = int(sys.argv[1])
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dest_ip = sys.argv[2]
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dest_port = int(sys.argv[3])
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except:
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print "Usage: python sender.py src_port dest_ip dest_port"
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sys.exit(1)
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key = 'why am I the key'
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data = [ord(c) for c in plaintext]
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ciphertext = [key]
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hasher = md5(key)
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for c in data:
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digest = hasher.digest()
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hasher.update(digest)
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ciphertext.append(chr(c ^ ord(digest[0])))
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ciphertext = ''.join(ciphertext)
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print ciphertext[:16]
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key = ciphertext[:16]
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hasher = md5(key)
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decrypted = []
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for c in ciphertext[16:]:
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digest = hasher.digest()
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hasher.update(digest)
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decrypted.append(chr(ord(c) ^ ord(digest[0])))
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decrypted = ''.join(decrypted)
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assert decrypted == plaintext
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sock = socket(AF_INET, SOCK_STREAM)
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addr = ("", src_port)
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sock.bind((addr))
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sock.connect((dest_ip, dest_port))
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sock.send(ciphertext)
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