Details
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Type:
New Feature
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 4.0 - Beta
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Fix Version/s: 4.3
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Component/s: Core/Parsing
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Labels:None
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Environment:PDF document with crypt filter definitions
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Assignee Priority:P3
Description
Crypt filters are a relatively new addition to PDF encryption. We are starting to see more and more documents using crypt filters as Adobe users upgrade to version 8 or 9 of Acrobat. The bug is a place holder for implementing a crypt filter manager and hooking it up to our stream chaining read and write capabilities.
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Crypt filters using 128-bit RC4 .
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Patrick Corless
added a comment - Crypt filters using 128-bit RC4 .
Crypt filters with 128-bit AES.
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Patrick Corless
added a comment - Crypt filters with 128-bit AES.
Crypt filters with 128-bit RC4.
Show
Patrick Corless
added a comment - Crypt filters with 128-bit RC4.
We need to support AES 128 and 256 bit encryption before we can do crypt filters.
Show
Patrick Corless
added a comment - We need to support AES 128 and 256 bit encryption before we can do crypt filters.
Unfortunately no time to fit into 4.2.
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Patrick Corless
added a comment - Unfortunately no time to fit into 4.2.
I've added basic support for crypt filers and AES encryption support. This allows ICEpdf to open our limited number of crypt filter examples. Hopefully more examples can be found so that this new features can be hardened.
ICEpdf can now open encrypted documents up to PDF v 7.0. Further work is needed to get to version 9.0 as 256 bit AES encryption support has yet to be implemented.
Show
Patrick Corless
added a comment - I've added basic support for crypt filers and AES encryption support. This allows ICEpdf to open our limited number of crypt filter examples. Hopefully more examples can be found so that this new features can be hardened.
ICEpdf can now open encrypted documents up to PDF v 7.0. Further work is needed to get to version 9.0 as 256 bit AES encryption support has yet to be implemented.
Just to clarify this enhancement is to cover the addition of a crypt filter manager and filter chaining support and not AES encryption support. I'll attache some sample files.