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tools v3.4

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Apprentice Alf
2011-02-08 17:21:51 +00:00
parent 8b632e309f
commit 2bedd75005
29 changed files with 234 additions and 650 deletions
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35
DeDRM_Macintosh_Application/DeDRM.app/Contents/Resources/ineptpdf.py
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@@ -1,5 +1,5 @@
#! /usr/bin/env python
# ineptpdf.pyw, version 7.7
# ineptpdf.pyw, version 7.9
from __future__ import with_statement
@@ -33,6 +33,7 @@ from __future__ import with_statement
# 7.6 - backported AES and other fixes from version 8.4.48
# 7.7 - On Windows try PyCrypto first and OpenSSL next
# 7.8 - Modify interface to allow use of import
# 7.9 - Bug fix for some session key errors when len(bookkey) > length required
"""
Decrypts Adobe ADEPT-encrypted PDF files.
@@ -1531,16 +1532,30 @@ class PDFDocument(object):
bookkey = bookkey[index:]
ebx_V = int_value(param.get('V', 4))
ebx_type = int_value(param.get('EBX_ENCRYPTIONTYPE', 6))
# added because of the booktype / decryption book session key error
if ebx_V == 3:
V = 3
elif ebx_V < 4 or ebx_type < 6:
V = ord(bookkey[0])
bookkey = bookkey[1:]
# added because of improper booktype / decryption book session key errors
if length > 0:
if len(bookkey) == length:
if ebx_V == 3:
V = 3
else:
V = 2
elif len(bookkey) == length + 1:
V = ord(bookkey[0])
bookkey = bookkey[1:]
else:
print "ebx_V is %d and ebx_type is %d" % (ebx_V, ebx_type)
print "length is %d and len(bookkey) is %d" % (length, len(bookkey))
print "bookkey[0] is %d" % ord(bookkey[0])
raise ADEPTError('error decrypting book session key - mismatched length')
else:
V = 2
if length and len(bookkey) != length:
raise ADEPTError('error decrypting book session key')
# proper length unknown try with whatever you have
print "ebx_V is %d and ebx_type is %d" % (ebx_V, ebx_type)
print "length is %d and len(bookkey) is %d" % (length, len(bookkey))
print "bookkey[0] is %d" % ord(bookkey[0])
if ebx_V == 3:
V = 3
else:
V = 2
self.decrypt_key = bookkey
self.genkey = self.genkey_v3 if V == 3 else self.genkey_v2
self.decipher = self.decrypt_rc4