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Message-ID: <4C86711B.8040401@16systems.com> Date: Tue, 07 Sep 2010 13:06:35 -0400 From: Brad Tilley <brad@...ystems.com> To: john-users@...ts.openwall.com Subject: bug in netscreen.py I sent earlier I wasn't checking for Python < 2.6 correctly. Still rough, but seems to work OK on Python 2 or 3: ---------------- # netscreen.py # Generate passwords in netscreen format. import sys def net(user, password): b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" middle = "Administration Tools" s = "%s:%s:%s" % (user, middle, password) # For versions of Python 2.5 and older if sys.version_info[0] == 2 and sys.version_info[1] < 6: import md5 m = md5.new(s).digest() else: import hashlib m = hashlib.md5(s.encode('latin_1')).digest() narray = [] for i in range(8): if sys.version_info[0] == 2: n1 = ord(m[2*i]) n2 = ord(m[2*i+1]) narray.append( (n1<<8 & 0xff00) | (n2 & 0xff) ) if sys.version_info[0] == 3: n1 = ord(chr(m[2*i])) n2 = ord(chr(m[2*i+1])) narray.append( (n1<<8 & 0xff00) | (n2 & 0xff) ) res = "" for i in narray: p1 = i >> 12 & 0xf p2 = i >> 6 & 0x3f p3 = i & 0x3f res = res + b64[p1] + b64[p2] + b64[p3] for c, n in zip("nrcstn", [0, 6, 12, 17, 23, 29]): res = res[:n] + c + res[n:] return res if __name__ == '__main__': user = sys.argv[1] password = sys.argv[2] ciphertext = net(user,password) print(("%s:%s$%s" % (user,user,ciphertext)))
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