[PDFBOX-3628] BadPaddingException on a valid document

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.3
• Fix Version/s: 3.0.0 PDFBox
• Component/s: Crypto, Parsing
• Environment: Windows 7 x64, JVM 1.8.0_101
• Assignee: Andreas Lehmkühler
• Reporter: Seva Alekseyev
• Created: 13/Dec/16 16:59
• Updated: 18/Aug/23 05:46
• Resolved: 11/Oct/22 05:36

Description

On the attached document, which opens fine with Adobe Reader, the PDDocument.load() throws an error:

java.io.IOException: javax.crypto.BadPaddingException: Given final block not properly padded
at org.apache.pdfbox.pdmodel.encryption.SecurityHandler.encryptDataAESother(SecurityHandler.java:296)
at org.apache.pdfbox.pdmodel.encryption.SecurityHandler.encryptData(SecurityHandler.java:153)
at org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decryptStream(SecurityHandler.java:454)
at org.apache.pdfbox.pdfparser.COSParser.parseFileObject(COSParser.java:784)
at org.apache.pdfbox.pdfparser.COSParser.parseObjectDynamically(COSParser.java:741)
at org.apache.pdfbox.pdfparser.COSParser.parseObjectDynamically(COSParser.java:672)
at org.apache.pdfbox.pdfparser.COSParser.parseDictObjects(COSParser.java:632)
at org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:217)
at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:252)
at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:966)
at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:922)
at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:870)
Caused by: javax.crypto.BadPaddingException: Given final block not properly padded
at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:966)
at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:824)
at com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:436)
at javax.crypto.Cipher.doFinal(Cipher.java:2048)
at org.apache.pdfbox.pdmodel.encryption.SecurityHandler.encryptDataAESother(SecurityHandler.java:276)
... 12 more