"Verify" command
This command will verify the VSIX as closely as the VSIX installer does.
- That all digests in the manifest are correct.
- That all parts are signed except for the signature part.
- That the signature on the manifest is correct.
- That the certificate meets the following criteria:
- Has an EKU of
1.3.6.1.5.5.7.3.3 - That is can build a chain to the certificate.
- That if the certificate is expired, the timestamp is within the certificate validity period.
- VSIX installer does online revocation checking (perhaps make this a flag?) for all certificate except the root.
- Has an EKU of
- If timestamped, validate the timestamp
- That the OPC signature algorithm is rsaWithSHA256
Hi,
I have signed the VSIX by using this tool, but I can't verify the VSIX by using this tool. Could you please suggest me how can I verify the VSIX using this tool
Microsoft's official vsixsigntool has a verify command. https://docs.microsoft.com/en-us/visualstudio/extensibility/signing-vsix-packages?view=vs-2019

Hi @vcsjones
But this command is not working. Show the error like, Could not validate the VSIX. Also, Microsoft tool is not supported for the private key signing
https://developercommunity.visualstudio.com/comments/57884/view.html
So, it would be very great for verify command in this tool.