10

I'm looking at a Windows PKI and see that the Thumbprint is SHA1, while the Signature is SHA2 (SHA256).

Is this an acceptable configuration?

Should I recommend that the client update to SHA2 for a Thumbprint?

Would this cause some backward compatibility issues?

11

Computed field

I think that's a calculated value by the Windows GUI. And not actually inside the cert. Have a look at the cert itself using OpenSSL. (openssl x509 -in MYFILENAME.CER -noout -text)

Here's a blog that talks about this:

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