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[cross-project-issues-dev] To be able to install newly signed plug-in on Helios and Indigo



We are not able to install newly signed plug-ins on Helios, and Indigo. We get the following error (during the installation of a signed plug-in):

Caused by: No algorithm found for 2.16.840.

                at org.eclipse.osgi.internal.signedcontent.PKCS7Processor.findDigest(

                at org.eclipse.osgi.internal.signedcontent.PKCS7Processor.processSignerInfos(

                at org.eclipse.osgi.internal.signedcontent.PKCS7Processor.<init>(

                at org.eclipse.osgi.internal.signedcontent.SignatureBlockProcessor.processSigner(

                at org.eclipse.osgi.internal.signedcontent.SignatureBlockProcessor.process(

                at org.eclipse.osgi.internal.signedcontent.SignedBundleFile.setBundleFile(

                at org.eclipse.osgi.internal.signedcontent.SignedBundleHook.getSignedContent(


This error happens because the class ‘PKCS7Processor’ embedded in Helios and Indigo isn’t able to deal with SHA-256. SHA-256 is used since Java-1.7 to sign [1]. I assume that the signing service has been updated to Java-1.7.


From the release train point of view this seems to be a good thing. But my company integrates EMF Facet and MoDisco into its own product and some of our clients are still using Helios and Java-1.5!


Does anybody have any advice to be able to install newly signed plug-in on Helios and Indigo?



Grégoire Dupé

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