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Issue 1635: Decypting PDF ebboks fixed

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Olaf Fricke 2021-05-01 21:11:53 +02:00 committed by NoDRM
parent 73af5d355d
commit 007a8e8a15
1 changed files with 3 additions and 3 deletions
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6
DeDRM_plugin/ineptpdf.py
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@ -1204,7 +1204,7 @@ class PDFStream(PDFObject):
for i in range(0, len(data), columns+1): for i in range(0, len(data), columns+1):
pred = data[i] pred = data[i]
ent1 = data[i+1:i+1+columns] ent1 = data[i+1:i+1+columns]
if pred == b'\x02': if pred == 2:
ent1 = b''.join(bytes([(a+b) & 255]) \ ent1 = b''.join(bytes([(a+b) & 255]) \
for (a,b) in zip(ent0,ent1)) for (a,b) in zip(ent0,ent1))
buf += ent1 buf += ent1
@ -1349,8 +1349,8 @@ class PDFXRefStream(object):
raise PDFNoValidXRef('Invalid PDF stream spec.') raise PDFNoValidXRef('Invalid PDF stream spec.')
size = stream.dic['Size'] size = stream.dic['Size']
index = stream.dic.get('Index', (0,size)) index = stream.dic.get('Index', (0,size))
self.index = zip(itertools.islice(index, 0, None, 2), self.index = list(zip(itertools.islice(index, 0, None, 2),
itertools.islice(index, 1, None, 2)) itertools.islice(index, 1, None, 2)))
(self.fl1, self.fl2, self.fl3) = stream.dic['W'] (self.fl1, self.fl2, self.fl3) = stream.dic['W']
self.data = stream.get_data() self.data = stream.get_data()
self.entlen = self.fl1+self.fl2+self.fl3 self.entlen = self.fl1+self.fl2+self.fl3