Recent changes to bugs

#9 Update OfficeCryptCodecHandler encodingKey comments

James Ahlborn — Thu, 20 Nov 2025 23:36:02 -0000

status: open --> closed

Update OfficeCryptCodecHandler encodingKey comments

Yingtong Li — Wed, 19 Nov 2025 23:51:51 -0000

As discussed at https://sourceforge.net/p/jackcessencrypt/discussion/general/thread/833fd8bfea/

This patch updates the comment in OfficeCryptCodecHandler to note that the value of the encoding key is used in encryption. This patch also updates the comment in AgileEncryptionProvider to note that this behaviour is different to what is described in the official Microsoft docs.

Index: src/main/java/com/healthmarketscience/jackcess/crypt/impl/OfficeCryptCodecHandler.java
===================================================================
--- src/main/java/com/healthmarketscience/jackcess/crypt/impl/OfficeCryptCodecHandler.java  (revision 199)
+++ src/main/java/com/healthmarketscience/jackcess/crypt/impl/OfficeCryptCodecHandler.java  (working copy)
@@ -65,8 +65,8 @@
     ByteBuffer buffer = readHeaderPage(channel);
     JetFormat format = channel.getFormat();

-    // the encoding key indicates whether or not the db is encoded (but is
-    // otherwise meaningless?)
+    // a non-zero encoding key indicates the db is encoded - will be passed to
+    // BaseCryptCodecHandler constructor for use in encryption
     byte[] encodingKey = ByteUtil.getBytes(
         buffer, format.OFFSET_ENCODING_KEY,
         JetCryptCodecHandler.ENCODING_KEY_LENGTH);
Index: src/main/java/com/healthmarketscience/jackcess/crypt/impl/office/AgileEncryptionProvider.java
===================================================================
--- src/main/java/com/healthmarketscience/jackcess/crypt/impl/office/AgileEncryptionProvider.java   (revision 199)
+++ src/main/java/com/healthmarketscience/jackcess/crypt/impl/office/AgileEncryptionProvider.java   (working copy)
@@ -132,7 +132,9 @@

   @Override
   protected ParametersWithIV computeCipherParams(int pageNumber) {
-    // when actually decrypting pages, we incorporate the "encoding key"
+    // OC: 2.3.4.15 says to use the zero-based segment number alone as block
+    // key, but this is incorrect for MS Access - when actually decrypting
+    // pages, we also incorporate the "encoding key"
     byte[] blockBytes = getEncodingKey(pageNumber);

     CTKeyData keyData = _encryptDesc.getKeyData();

Update OfficeCryptCodecHandler encodingKey comments

Yingtong Li — Wed, 19 Nov 2025 23:51:51 -0000

Ticket 9 has been modified: Update OfficeCryptCodecHandler encodingKey comments
Edited By: James Ahlborn (jahlborn)
Status updated: 'open' => 'closed'

#8 Using Jackcess Encrypt in OSGi fails due to not exported .impl

James Ahlborn — Tue, 03 Oct 2017 01:25:26 -0000

status: open --> closed
Group: Unassigned --> 2.1.4

#8 Using Jackcess Encrypt in OSGi fails due to not exported .impl

James Ahlborn — Tue, 03 Oct 2017 01:10:01 -0000

So here's my plan:
remove some of the unneeded cruft from the Export-Package (only needs the "main" package)
add a Fragment-Host with the value of "com.healthmarketscience.jackcess"
* add the util class i described in an earlier comment to the com.healthmarketscience.jackcess package

i have no idea how java 9 plays into all of this. a quck read of that link makes it sound like everything on the classpath is a single module, so no problems. i guess if you embrace modules, though, there could be problems. java 9 is going to be a migration nightmare for everyone.

#8 Using Jackcess Encrypt in OSGi fails due to not exported .impl

James Ahlborn — Mon, 02 Oct 2017 13:34:54 -0000

Ticket moved from /p/jackcess/bugs/140/

#7 ClassNotFoundException: net.sourceforge.cobertura.coveragedata.TouchCollector

David — Mon, 14 Aug 2017 20:00:34 -0000

That did the trick. Thanks for the quick turn around!

#7 ClassNotFoundException: net.sourceforge.cobertura.coveragedata.TouchCollector

James Ahlborn — Fri, 11 Aug 2017 13:43:56 -0000

status: open --> closed
Group: Unassigned --> 2.1.3

#7 ClassNotFoundException: net.sourceforge.cobertura.coveragedata.TouchCollector

James Ahlborn — Fri, 11 Aug 2017 12:42:29 -0000

Hmm, must have been a bad release!

ClassNotFoundException: net.sourceforge.cobertura.coveragedata.TouchCollector

David — Thu, 10 Aug 2017 20:25:37 -0000

Ticket 7 has been modified: ClassNotFoundException: net.sourceforge.cobertura.coveragedata.TouchCollector
Edited By: James Ahlborn (jahlborn)
Status updated: u'open' => u'closed'
_milestone updated: u'Unassigned' => u'2.1.3'