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Results tagged with certificates
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user 3272
A piece of data used in public key cryptography (specifically public key infrastructures) that contains identifying information (i.e. email address or web address), a hash of a public key, and a digital signature that authenticates the data in the certificate. For questions specifically about [x509], [certificate-authority], or [public-key-infrastructure], please use those tags.
4
votes
1
answer
7k
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What is the difference between `extendedKeyUsage` and an application policy?
Because some implementations of public key infrastructure (PKI) applications cannot interpret application policies, both application policies and enhanced key usage sections appear in certificates issued …
- 7,988
1
vote
1
answer
2k
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How to troubleshoot why Thunderbird rejects a PKCS#12 certificate with "Could not verify thi...
After playing around a bit with openssl, I created a PKCS12 certificate which imports flawlessly in Firefox while Thunderbird "Could not verify this certificate for unknown reasons". Talk about a help …
- 7,988
42
votes
1
answer
34k
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Which properties of a X.509 certificate should be critical and which not?
I encountered the basicConstraints to be critical, both because it's basic and because a certificate marked as CA:FALSE should obviously not be able to sign child-certificates (though I think I read somewhere …
- 7,988
10
votes
2
answers
17k
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Which extensions to use for a S/MIME certificate?
(I'm using openssl, which at the moment creates CA and certificates with permission to do basically everything) …
- 7,988