From f0d920c1586b7d53f0f7e6728de0eae8b60648fd Mon Sep 17 00:00:00 2001 From: Anonymous Date: Tue, 16 Feb 2010 18:07:51 +0000 Subject: [PATCH] ineptepub v4 --- Adobe_EPUB_Tools/ineptepub.pyw | 83 +++++++++++++++++++++------------- 1 file changed, 51 insertions(+), 32 deletions(-) diff --git a/Adobe_EPUB_Tools/ineptepub.pyw b/Adobe_EPUB_Tools/ineptepub.pyw index f409686..004c10d 100644 --- a/Adobe_EPUB_Tools/ineptepub.pyw +++ b/Adobe_EPUB_Tools/ineptepub.pyw @@ -1,6 +1,6 @@ #! /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/ # and PyCrypto from http://www.voidspace.org.uk/python/modules.shtml#pycrypto @@ -11,6 +11,7 @@ # 1 - Initial release # 2 - Rename to INEPT, fix exit code # 3 - Add cmd or gui choosing +# 4 - changed to adeptkey4.der format for 1.7.2 support (anon) """ Decrypt Adobe ADEPT-encrypted EPUB books. @@ -31,6 +32,7 @@ import Tkinter import Tkconstants import tkFileDialog import tkMessageBox +import pickle try: from Crypto.Cipher import AES @@ -194,35 +196,52 @@ def cli_main(argv=sys.argv): print "usage: %s KEYFILE INBOOK OUTBOOK" % (progname,) return 1 keypath, inpath, outpath = argv[1:] - with open(keypath, 'rb') as f: - keyder = f.read() - key = ASN1Parser([ord(x) for x in keyder]) - key = [bytesToNumber(key.getChild(x).value) for x in xrange(1, 4)] - rsa = RSA.construct(key) - with closing(ZipFile(open(inpath, 'rb'))) as inf: - namelist = set(inf.namelist()) - if 'META-INF/rights.xml' not in namelist or \ - 'META-INF/encryption.xml' not in namelist: - raise ADEPTError('%s: not an ADEPT EPUB' % (inpath,)) - for name in META_NAMES: - namelist.remove(name) - rights = etree.fromstring(inf.read('META-INF/rights.xml')) - adept = lambda tag: '{%s}%s' % (NSMAP['adept'], tag) - expr = './/%s' % (adept('encryptedKey'),) - bookkey = ''.join(rights.findtext(expr)) - bookkey = rsa.decrypt(bookkey.decode('base64')) - # Padded as per RSAES-PKCS1-v1_5 - if bookkey[-17] != '\x00': - raise ADEPTError('problem decrypting session key') - 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)) + with open(keypath, 'r') as f: + keyderlist = pickle.load(f) + keynotfound = 1 + for keyder in keyderlist: + key = ASN1Parser([ord(x) for x in keyder]) + key = [bytesToNumber(key.getChild(x).value) for x in xrange(1, 4)] + try: + rsa = RSA.construct(key) + except Exception: + keynotfound = 1 + continue + with closing(ZipFile(open(inpath, 'rb'))) as inf: + namelist = set(inf.namelist()) + if 'META-INF/rights.xml' not in namelist or \ + 'META-INF/encryption.xml' not in namelist: + raise ADEPTError('%s: not an ADEPT EPUB' % (inpath,)) + for name in META_NAMES: + namelist.remove(name) + rights = etree.fromstring(inf.read('META-INF/rights.xml')) + adept = lambda tag: '{%s}%s' % (NSMAP['adept'], tag) + expr = './/%s' % (adept('encryptedKey'),) + bookkey = ''.join(rights.findtext(expr)) + try: + bookkey = rsa.decrypt(bookkey.decode('base64')) + except Exception: + keynotfound = 1 + continue + # Padded as per RSAES-PKCS1-v1_5 + 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 @@ -238,8 +257,8 @@ class DecryptionDialog(Tkinter.Frame): Tkinter.Label(body, text='Key file').grid(row=0) self.keypath = Tkinter.Entry(body, width=30) self.keypath.grid(row=0, column=1, sticky=sticky) - if os.path.exists('adeptkey.der'): - self.keypath.insert(0, 'adeptkey.der') + if os.path.exists('adeptkey4.der'): + self.keypath.insert(0, 'adeptkey4.der') button = Tkinter.Button(body, text="...", command=self.get_keypath) button.grid(row=0, column=2) Tkinter.Label(body, text='Input file').grid(row=1)