# Issue with Mender Artifact signature when using Docker Update Module

**URL:** <https://hub.mender.io/t/issue-with-mender-artifact-signature-when-using-docker-update-module/1056>\
**Category:** General Discussions\
**Created:** [September 20, 2019, 8:20pm UTC](https://hub.mender.io/t/issue-with-mender-artifact-signature-when-using-docker-update-module/1056 "2019-09-20T20:20:53Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![wow102](https://avatars.discourse-cdn.com/v4/letter/w/5daacb/32.png) [@wow102](https://hub.mender.io/u/wow102)\
**Post date:** [September 20, 2019, 8:20pm UTC](https://hub.mender.io/t/issue-with-mender-artifact-signature-when-using-docker-update-module/1056/1 "2019-09-20T20:20:53Z")

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Hello everyone,

I downloaded the tool to create the artifacts, but when I try to execute the signature using the keys generated in RSA, the result is always this:

Signature: signed; verification using provided key failed

I tried to also use "- -k

but nothing, at the end of the generation of the artifact, is always unverified.  
Could anyone give me a hand?

Thanks in advance.

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**Author:** ![eystein](https://avatars.discourse-cdn.com/v4/letter/e/e5b9ba/32.png) [@eystein](https://hub.mender.io/u/eystein)\
**Post date:** [September 20, 2019, 10:13pm UTC](https://hub.mender.io/t/issue-with-mender-artifact-signature-when-using-docker-update-module/1056/2 "2019-09-20T22:13:41Z")

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Hi @wow102 and welcome to Mender Hub!

You are probably experiencing a known issue in mender-artifact (see a few comments above). Try to update your mender-artifact tool to 3.1.0 (should be just a drop-in binary replacement): [https://docs.mender.io/2.1/downloads](https://docs.mender.io/2.1/downloads)

Let us know if this helps!

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**Author:** ![wow102](https://avatars.discourse-cdn.com/v4/letter/w/5daacb/32.png) [@wow102](https://hub.mender.io/u/wow102)\
**Post date:** [September 21, 2019, 8:35pm UTC](https://hub.mender.io/t/issue-with-mender-artifact-signature-when-using-docker-update-module/1056/3 "2019-09-21T20:35:48Z")

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Hi @eystein,

I updated the latest version of mender-artifact (3.1.0-dirty) by downloading and replacing the bin, but nothing to do, it still doesn’t work unfortunately:

`Signature: signed; verification using provided key failed`

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**Author:** ![eystein](https://avatars.discourse-cdn.com/v4/letter/e/e5b9ba/32.png) [@eystein](https://hub.mender.io/u/eystein)\
**Post date:** [September 23, 2019, 5:41pm UTC](https://hub.mender.io/t/issue-with-mender-artifact-signature-when-using-docker-update-module/1056/4 "2019-09-23T17:41:29Z")

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Hi @wow102,  
Thanks for testing!  
Did you create & sign the Artifact with mender-artifact 3.1.0?

I think the bug was during creation of the signed artifact, not verification, so it has to be created with the new version.

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**Author:** ![wow102](https://avatars.discourse-cdn.com/v4/letter/w/5daacb/32.png) [@wow102](https://hub.mender.io/u/wow102)\
**Post date:** [September 24, 2019, 9:37am UTC](https://hub.mender.io/t/issue-with-mender-artifact-signature-when-using-docker-update-module/1056/5 "2019-09-24T09:37:45Z")

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Hi @eystein ,

I don’t know what he did, but I ran the procedure again and the artifact was correctly signed and verified and installed by the Mender client.

Thanks for everything anyway.

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**Author:** ![eystein](https://avatars.discourse-cdn.com/v4/letter/e/e5b9ba/32.png) [@eystein](https://hub.mender.io/u/eystein)\
**Post date:** [September 24, 2019, 2:06pm UTC](https://hub.mender.io/t/issue-with-mender-artifact-signature-when-using-docker-update-module/1056/6 "2019-09-24T14:06:36Z")

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@wow102, great happy it now works for you!