verify with JDK7 -> verification failure "jar is unsigned. sign and timestamp with JDK9 using default settings It looks like this is due to the fact that JDK9 timestamps by default using SHA-256 - but in the JDK 7u tree, AlgorithmId.java is missing a backport of changeset JDK-7180907 which means that SignatureFileVerifier#verifyTimestamp fails since it is looking for an algorithm with the non-standard name SHA256 (without a hyphen).īy the way, the bug report talks about Web Start, but the minimal reproducable case is much easier and doesn't involve Web Start: I'm having problems with JAR files signed and timestamped with JDK9 - they fail validation under JDK7u60.
I'm the reporter of JI-9013191 and I just wanted to follow up with some more information, since I can't see or comment on the bug in the OpenJDK JIRA instance. The application doesn't run, claiming that the JAR file contains unsigned entriesĬom.: Found unsigned entry in resource: Īt .SigningInfo.getCommonCodeSignersForJar(Unknown Source)Īt .SigningInfo.check(Unknown Source)Īt .JNLPSignedResourcesHelper.checkSignedResourcesHelper(Unknown Source)Īt .JNLPSignedResourcesHelper.checkSignedResources(Unknown Source)Īt .prepareResources(Unknown Source)Īt .prepareAllResources(Unknown Source)Īt .prepareToLaunch(Unknown Source)Īt .launch(Unknown Source)Īt .launchApp(Unknown Source)Īt .continueInSecureThread(Unknown Source)Īt .access$000(Unknown Source)Īt $1.run(Unknown Source)ĭon't use timestamping or timestamp with JDK 8 or earlier The application should launch and run normally Launch the webstart application from a machine without JDK 9 installed
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :Ĭ:\>"C:\Program Files (x86)\Java\jdk1.9.0\bin\jarsigner.exe" -storepass password -tsa example.jar.9b20 testĤ. It looks like this is a bug in the signature process rather than the verification process, but it may be a problem with the verification instead? If I sign with JDK 9, JRE 7 complains "Found unsigned entry in resource".Ĭomplete compatibility matrix as far as I can see: Java HotSpot(TM) Client VM (build 1.9.0-ea-b20, mixed mode, sharing)Īccording to the latest security recommendations from Oracle, I have been trying to timestamp my jar files at signature time. Java(TM) SE Runtime Environment (build 1.9.0-ea-b20)
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