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ineptepub v4

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Anonymous 2010-02-16 18:07:51 +00:00 committed by Apprentice Alf
parent e9a7312759
commit f0d920c158
1 changed files with 51 additions and 32 deletions
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Adobe_EPUB_Tools/ineptepub.pyw
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@ -1,6 +1,6 @@
#! /usr/bin/python #! /usr/bin/python
# ineptepub.pyw, version 3 # ineptepub.pyw, version 4
# To run this program install Python 2.6 from http://www.python.org/download/ # To run this program install Python 2.6 from http://www.python.org/download/
# and PyCrypto from http://www.voidspace.org.uk/python/modules.shtml#pycrypto # and PyCrypto from http://www.voidspace.org.uk/python/modules.shtml#pycrypto
@ -11,6 +11,7 @@
# 1 - Initial release # 1 - Initial release
# 2 - Rename to INEPT, fix exit code # 2 - Rename to INEPT, fix exit code
# 3 - Add cmd or gui choosing # 3 - Add cmd or gui choosing
# 4 - changed to adeptkey4.der format for 1.7.2 support (anon)
""" """
Decrypt Adobe ADEPT-encrypted EPUB books. Decrypt Adobe ADEPT-encrypted EPUB books.
@ -31,6 +32,7 @@ import Tkinter
import Tkconstants import Tkconstants
import tkFileDialog import tkFileDialog
import tkMessageBox import tkMessageBox
import pickle
try: try:
from Crypto.Cipher import AES from Crypto.Cipher import AES
@ -194,35 +196,52 @@ def cli_main(argv=sys.argv):
print "usage: %s KEYFILE INBOOK OUTBOOK" % (progname,) print "usage: %s KEYFILE INBOOK OUTBOOK" % (progname,)
return 1 return 1
keypath, inpath, outpath = argv[1:] keypath, inpath, outpath = argv[1:]
with open(keypath, 'rb') as f: with open(keypath, 'r') as f:
keyder = f.read() keyderlist = pickle.load(f)
key = ASN1Parser([ord(x) for x in keyder]) keynotfound = 1
key = [bytesToNumber(key.getChild(x).value) for x in xrange(1, 4)] for keyder in keyderlist:
rsa = RSA.construct(key) key = ASN1Parser([ord(x) for x in keyder])
with closing(ZipFile(open(inpath, 'rb'))) as inf: key = [bytesToNumber(key.getChild(x).value) for x in xrange(1, 4)]
namelist = set(inf.namelist()) try:
if 'META-INF/rights.xml' not in namelist or \ rsa = RSA.construct(key)
'META-INF/encryption.xml' not in namelist: except Exception:
raise ADEPTError('%s: not an ADEPT EPUB' % (inpath,)) keynotfound = 1
for name in META_NAMES: continue
namelist.remove(name) with closing(ZipFile(open(inpath, 'rb'))) as inf:
rights = etree.fromstring(inf.read('META-INF/rights.xml')) namelist = set(inf.namelist())
adept = lambda tag: '{%s}%s' % (NSMAP['adept'], tag) if 'META-INF/rights.xml' not in namelist or \
expr = './/%s' % (adept('encryptedKey'),) 'META-INF/encryption.xml' not in namelist:
bookkey = ''.join(rights.findtext(expr)) raise ADEPTError('%s: not an ADEPT EPUB' % (inpath,))
bookkey = rsa.decrypt(bookkey.decode('base64')) for name in META_NAMES:
# Padded as per RSAES-PKCS1-v1_5 namelist.remove(name)
if bookkey[-17] != '\x00': rights = etree.fromstring(inf.read('META-INF/rights.xml'))
raise ADEPTError('problem decrypting session key') adept = lambda tag: '{%s}%s' % (NSMAP['adept'], tag)
encryption = inf.read('META-INF/encryption.xml') expr = './/%s' % (adept('encryptedKey'),)
decryptor = Decryptor(bookkey[-16:], encryption) bookkey = ''.join(rights.findtext(expr))
kwds = dict(compression=ZIP_DEFLATED, allowZip64=False) try:
with closing(ZipFile(open(outpath, 'wb'), 'w', **kwds)) as outf: bookkey = rsa.decrypt(bookkey.decode('base64'))
zi = ZipInfo('mimetype', compress_type=ZIP_STORED) except Exception:
outf.writestr(zi, inf.read('mimetype')) keynotfound = 1
for path in namelist: continue
data = inf.read(path) # Padded as per RSAES-PKCS1-v1_5
outf.writestr(path, decryptor.decrypt(path, data)) if bookkey[-17] != '\x00':
keynotfound = 1
inf.close()
continue
else:
keynotfound = 0
encryption = inf.read('META-INF/encryption.xml')
decryptor = Decryptor(bookkey[-16:], encryption)
kwds = dict(compression=ZIP_DEFLATED, allowZip64=False)
with closing(ZipFile(open(outpath, 'wb'), 'w', **kwds)) as outf:
zi = ZipInfo('mimetype', compress_type=ZIP_STORED)
outf.writestr(zi, inf.read('mimetype'))
for path in namelist:
data = inf.read(path)
outf.writestr(path, decryptor.decrypt(path, data))
break
if keynotfound == 1:
raise ADEPTError('problem decrypting session key')
return 0 return 0
@ -238,8 +257,8 @@ class DecryptionDialog(Tkinter.Frame):
Tkinter.Label(body, text='Key file').grid(row=0) Tkinter.Label(body, text='Key file').grid(row=0)
self.keypath = Tkinter.Entry(body, width=30) self.keypath = Tkinter.Entry(body, width=30)
self.keypath.grid(row=0, column=1, sticky=sticky) self.keypath.grid(row=0, column=1, sticky=sticky)
if os.path.exists('adeptkey.der'): if os.path.exists('adeptkey4.der'):
self.keypath.insert(0, 'adeptkey.der') self.keypath.insert(0, 'adeptkey4.der')
button = Tkinter.Button(body, text="...", command=self.get_keypath) button = Tkinter.Button(body, text="...", command=self.get_keypath)
button.grid(row=0, column=2) button.grid(row=0, column=2)
Tkinter.Label(body, text='Input file').grid(row=1) Tkinter.Label(body, text='Input file').grid(row=1)