[PDFBOX-1593] Adobe encrypted document doesn't parse correct (Acrobat 9 compatibility)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.8.1
• Component/s: Parsing
• Assignee: Thomas Chojecki
• Reporter: Thomas Chojecki
• Created: 07/May/13 08:10
• Updated: 07/May/13 09:41
• Resolved: 07/May/13 09:41

Description

Trying to parse and receive some information from encrypted documents created with Adobe 9 with compatibility to Acrobat 9, cause an error while decrypting informations.

I tested documents with follow compatibility:
Acrobat 3 (40-bit RC4) -> works
Acrobat 5 & 6 (128-bit RC4) -> work
Acrobat 7 (128-bit AES) -> work
Acrobat 9 (256-bit AES) -> doesn't work

The follow error will be thrown.

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
at java.lang.System.arraycopy(Native Method)
at org.apache.pdfbox.pdmodel.encryption.StandardSecurityHandler.computeEncryptedKey(StandardSecurityHandler.java:591)
at org.apache.pdfbox.pdmodel.encryption.StandardSecurityHandler.computeUserPassword(StandardSecurityHandler.java:628)
at org.apache.pdfbox.pdmodel.encryption.StandardSecurityHandler.isUserPassword(StandardSecurityHandler.java:812)
at org.apache.pdfbox.pdmodel.encryption.StandardSecurityHandler.prepareForDecryption(StandardSecurityHandler.java:213)
at org.apache.pdfbox.pdmodel.encryption.StandardSecurityHandler.decryptDocument(StandardSecurityHandler.java:154)
at org.apache.pdfbox.pdmodel.PDDocument.openProtection(PDDocument.java:1509)
at org.apache.pdfbox.pdmodel.PDDocument.decrypt(PDDocument.java:919)
at de.bos_bremen.pdftoolbox.testing.Test.main(Test.java:45)

Issue Links

• depends upon: PDFBOX-1594 Add support for AES256 Encryption
• is duplicated by: PDFBOX-953 PDFBox fails to ExtractText from Adobe Acrobat X 256-bit AES encrypted documents