Add useful error message for the new, uncracked ADEPT DRM
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@ -373,6 +373,10 @@ class DeDRM(FileTypePlugin):
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if result == 0:
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print("{0} v{1}: Decrypted with key {2:s} after {3:.1f} seconds".format(PLUGIN_NAME, PLUGIN_VERSION,keyname,time.time()-self.starttime))
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return self.checkFonts(of.name)
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except ineptepub.ADEPTNewVersionError:
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print("{0} v{1}: Book uses unsupported (too new) Adobe DRM.".format(PLUGIN_NAME, PLUGIN_VERSION, time.time()-self.starttime))
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return path_to_ebook
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except:
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print("{0} v{1}: Exception when decrypting after {2:.1f} seconds - trying other keys".format(PLUGIN_NAME, PLUGIN_VERSION, time.time()-self.starttime))
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traceback.print_exc()
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@ -387,6 +391,9 @@ class DeDRM(FileTypePlugin):
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# Give the user key, ebook and TemporaryPersistent file to the decryption function.
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try:
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result = ineptepub.decryptBook(userkey, inf.name, of.name)
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except ineptepub.ADEPTNewVersionError:
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print("{0} v{1}: Book uses unsupported (too new) Adobe DRM.".format(PLUGIN_NAME, PLUGIN_VERSION, time.time()-self.starttime))
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return path_to_ebook
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except:
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print("{0} v{1}: Exception when decrypting after {2:.1f} seconds".format(PLUGIN_NAME, PLUGIN_VERSION, time.time()-self.starttime))
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traceback.print_exc()
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@ -521,6 +528,10 @@ class DeDRM(FileTypePlugin):
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if result == 0:
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print("{0} v{1}: Decrypted with key {2:s} after {3:.1f} seconds".format(PLUGIN_NAME, PLUGIN_VERSION,keyname,time.time()-self.starttime))
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return of.name
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except ineptpdf.ADEPTNewVersionError:
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print("{0} v{1}: Book uses unsupported (too new) Adobe DRM.".format(PLUGIN_NAME, PLUGIN_VERSION, time.time()-self.starttime))
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return path_to_ebook
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except:
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print("{0} v{1}: Exception when decrypting after {2:.1f} seconds - trying other keys".format(PLUGIN_NAME, PLUGIN_VERSION, time.time()-self.starttime))
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traceback.print_exc()
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@ -537,6 +548,9 @@ class DeDRM(FileTypePlugin):
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# Give the user key, ebook and TemporaryPersistent file to the decryption function.
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try:
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result = ineptpdf.decryptBook(userkey, path_to_ebook, of.name)
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except ineptpdf.ADEPTNewVersionError:
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print("{0} v{1}: Book uses unsupported (too new) Adobe DRM.".format(PLUGIN_NAME, PLUGIN_VERSION, time.time()-self.starttime))
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return path_to_ebook
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except:
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print("{0} v{1}: Exception when decrypting after {2:.1f} seconds".format(PLUGIN_NAME, PLUGIN_VERSION, time.time()-self.starttime))
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traceback.print_exc()
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@ -110,6 +110,9 @@ def unicode_argv():
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class ADEPTError(Exception):
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pass
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class ADEPTNewVersionError(Exception):
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pass
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def _load_crypto_libcrypto():
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from ctypes import CDLL, POINTER, c_void_p, c_char_p, c_int, c_long, \
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Structure, c_ulong, create_string_buffer, cast
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@ -468,6 +471,12 @@ def decryptBook(userkey, inpath, outpath):
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adept = lambda tag: '{%s}%s' % (NSMAP['adept'], tag)
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expr = './/%s' % (adept('encryptedKey'),)
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bookkey = ''.join(rights.findtext(expr))
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if len(bookkey) == 192:
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print("{0:s} seems to be an Adobe ADEPT ePub with Adobe's new DRM".format(os.path.basename(inpath)))
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print("This DRM cannot be removed yet. ")
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print("Try getting your distributor to give you a new ACSM file, then open that in an old version of ADE (2.0).")
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print("If your book distributor is not enforcing the new DRM yet, this will give you a copy with the old DRM.")
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raise ADEPTNewVersionError("Book uses new ADEPT encryption")
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if len(bookkey) != 172:
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print("{0:s} is not a secure Adobe Adept ePub.".format(os.path.basename(inpath)))
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return 1
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@ -125,6 +125,9 @@ def unicode_argv():
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class ADEPTError(Exception):
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pass
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class ADEPTNewVersionError(Exception):
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pass
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import hashlib
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@ -1615,7 +1618,16 @@ class PDFDocument(object):
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rights = zlib.decompress(rights, -15)
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rights = etree.fromstring(rights)
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expr = './/{http://ns.adobe.com/adept}encryptedKey'
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bookkey = codecs.decode(''.join(rights.findtext(expr)).encode('utf-8'),'base64')
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bookkey = ''.join(rights.findtext(expr))
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if len(bookkey) == 192:
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print("This seems to be an Adobe ADEPT PDF with Adobe's new DRM")
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print("This DRM cannot be removed yet. ")
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print("Try getting your distributor to give you a new ACSM file, then open that in an old version of ADE (2.0).")
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print("If your book distributor is not enforcing the new DRM yet, this will give you a copy with the old DRM.")
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raise ADEPTNewVersionError("Book uses new ADEPT encryption")
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bookkey = codecs.decode(bookkey.encode('utf-8'),'base64')
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bookkey = rsa.decrypt(bookkey)
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if len(bookkey) > 16:
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