ICEpdf
  1. ICEpdf
  2. PDF-1062

Encryption dictionary error decoding hex strings

          Details

          • Type: Bug Bug
          • Status: Closed
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: 6.1.3
          • Fix Version/s: 6.2
          • Component/s: Core/Parsing
          • Labels:
            None
          • Environment:
            any

            Description

            A community member has reported an encryption issue related to PDF-868. The posted file is another example of hex strings that start off with FEFF which would normally be a flag indicating a 4 byte encoding. I should have given the hole class an audit for PDF-868 but unfortunately didn't.

            Once the class is updated to use the raw value of the hex string the document decrypts correctly.

              Activity

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              Patrick Corless created issue -
              Patrick Corless made changes -
              Field Original Value New Value
              Fix Version/s 6.1.4 [ 13090 ]
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              Patrick Corless added a comment -

              Updated the EncryptionDictionary class to handle ObjectString values as raw byte values. These addresses the encoding issue which was preventing the calculation of a correct encryption key.

              Show
              Patrick Corless added a comment - Updated the EncryptionDictionary class to handle ObjectString values as raw byte values. These addresses the encoding issue which was preventing the calculation of a correct encryption key.
              Hide
              Permalink
              Patrick Corless added a comment -

              Fixes checked in on the Branch and Trunk.

              Show
              Patrick Corless added a comment - Fixes checked in on the Branch and Trunk.
              Patrick Corless made changes -
              Status Open [ 1 ] Resolved [ 5 ]
              Resolution Fixed [ 1 ]
              Repository Revision Date User Message
              ICEsoft Public SVN Repository #49538 Thu Nov 10 11:21:39 MST 2016 patrick.corless PDF-1062 fixed a hex string parsing issue in the EncryptionDictionary which was providing StandardEncryption with incorrect values causing an invalid key to be created.
              Files Changed
              Commit graph MODIFY /icepdf/trunk/icepdf/core/src/org/icepdf/core/pobjects/security/StandardEncryption.java
              Commit graph MODIFY /icepdf/trunk/icepdf/core/src/org/icepdf/core/pobjects/security/EncryptionDictionary.java
              Repository Revision Date User Message
              ICEsoft Public SVN Repository #49539 Thu Nov 10 11:21:54 MST 2016 patrick.corless PDF-1062 fixed a hex string parsing issue in the EncryptionDictionary which was providing StandardEncryption with incorrect values causing an invalid key to be created.
              Files Changed
              Commit graph MODIFY /icepdf/branches/icepdf-6.1.0/icepdf/core/src/org/icepdf/core/pobjects/security/StandardEncryption.java
              Commit graph MODIFY /icepdf/branches/icepdf-6.1.0/icepdf/core/src/org/icepdf/core/pobjects/security/EncryptionDictionary.java
              Patrick Corless made changes -
              Status Resolved [ 5 ] Closed [ 6 ]

                People

                • Assignee:
                  Patrick Corless
                  Reporter:
                  Patrick Corless
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                  Dates

                  • Created:
                    Updated:
                    Resolved: