PDFBOX-5866: also truncate the O and U entries, as suggested by Micha…

…el Klink git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1919783 13f79535-47bb-0310-9956-ffa450edef68
apache · Aug 9, 2024 · 403f44b · 403f44b
1 parent 0e11fd2
commit 403f44b
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/encryption/PDEncryption.java b/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/encryption/PDEncryption.java
@@ -277,6 +277,15 @@ public byte[] getOwnerKey() throws IOException
         if( owner != null )
         {
             o = owner.getBytes();
+            int r = getRevision();
+            if (r <= 4)
+            {
+                o = Arrays.copyOf(o, 32);
+            }
+            else if (r == 6)
+            {
+                o = Arrays.copyOf(o, 48);
+            }
         }
         return o;
     }
@@ -307,6 +316,15 @@ public byte[] getUserKey() throws IOException
         if( user != null )
         {
             u = user.getBytes();
+            int r = getRevision();
+            if (r <= 4)
+            {
+                u = Arrays.copyOf(u, 32);
+            }
+            else if (r == 6)
+            {
+                u = Arrays.copyOf(u, 48);
+            }
         }
         return u;
     }