ineptepub 3
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@ -1,6 +1,6 @@
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#! /usr/bin/python
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# ineptepub.pyw, version 2
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# ineptepub.pyw, version 3
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# To run this program install Python 2.6 from http://www.python.org/download/
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# and PyCrypto from http://www.voidspace.org.uk/python/modules.shtml#pycrypto
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@ -10,6 +10,7 @@
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# Revision history:
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# 1 - Initial release
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# 2 - Rename to INEPT, fix exit code
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# 3 - Add cmd or gui choosing
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"""
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Decrypt Adobe ADEPT-encrypted EPUB books.
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@ -62,7 +63,7 @@ class ASN1Parser(object):
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def __init__(self, bytes):
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self.bytes = bytes
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self.index = 0
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def get(self, length):
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if self.index + length > len(self.bytes):
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raise ASN1Error("Error decoding ASN.1")
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@ -72,22 +73,22 @@ class ASN1Parser(object):
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x |= self.bytes[self.index]
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self.index += 1
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return x
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def getFixBytes(self, lengthBytes):
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bytes = self.bytes[self.index : self.index+lengthBytes]
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self.index += lengthBytes
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return bytes
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def getVarBytes(self, lengthLength):
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lengthBytes = self.get(lengthLength)
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return self.getFixBytes(lengthBytes)
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def getFixList(self, length, lengthList):
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l = [0] * lengthList
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for x in range(lengthList):
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l[x] = self.get(length)
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return l
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def getVarList(self, length, lengthLength):
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lengthList = self.get(lengthLength)
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if lengthList % length != 0:
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@ -97,19 +98,19 @@ class ASN1Parser(object):
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for x in range(lengthList):
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l[x] = self.get(length)
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return l
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def startLengthCheck(self, lengthLength):
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self.lengthCheck = self.get(lengthLength)
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self.indexCheck = self.index
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def setLengthCheck(self, length):
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self.lengthCheck = length
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self.indexCheck = self.index
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def stopLengthCheck(self):
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if (self.index - self.indexCheck) != self.lengthCheck:
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raise ASN1Error("Error decoding ASN.1")
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def atLengthCheck(self):
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if (self.index - self.indexCheck) < self.lengthCheck:
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return False
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@ -162,7 +163,7 @@ class Decryptor(object):
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path = elem.get('URI', None)
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if path is not None:
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encrypted.add(path)
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def decompress(self, bytes):
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dc = zlib.decompressobj(-15)
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bytes = dc.decompress(bytes)
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@ -170,7 +171,7 @@ class Decryptor(object):
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if ex:
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bytes = bytes + ex
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return bytes
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def decrypt(self, path, data):
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if path in self._encrypted:
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data = self._aes.decrypt(data)[16:]
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