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Are certificate thumbprints secure?
But there is no need to panic – thumbprints are not related to your certificate’s security, and your certificate is 100% compliant with industry standards.
What is a fingerprint certificate?
A certificate’s fingerprint is the unique identifier of the certificate. Microsoft Internet Explorer calls it Thumbprint. Browsers tend to display it as if it were a part of the certificate. It is not a part of the certificate, but it is computed from it.
How do I get fingerprint certified?
Requirements
- Must be a citizen of the United States.
- Must pass several background checks, including the Criminal History Records Check (CHRC)
- Must be able to attend online training.
- Must pass practical tests.
- Must adhere to TSA-approved procedures.
- Must have computer with internet access.
Why do certificates need a thumbprint to be trusted?
For root/self-signed certificates, they’re not trusted unless it is provided with the OS. So the thumbprint included is also not trusted. I think that I just misunderstood something, can anyone point it out? There is no thumbprint included in the certificate. What is included is a signature which is used to build the trust chain.
Can You renew a certificate with the same thumbprint?
Since the thumbprint is a hash of the certificate in binary DER encoding this will not work if your certificate is stored in any other format than DER. So now we have the answer to why you cannot request a new certificate, or renew an existing one, with the same thumbprint.
Why do you need a fingerprint on a certificate?
What is included is a signature which is used to build the trust chain. The thumbprint (or fingerprint) is just a hash over the certificate to make it easier for humans to compare certificates. It is not included but computed when needed.
What’s the difference between a thumbprint and a signature?
The signature algorithm is using SHA-256 (or, SHA-2 as we usually say for short); which is compliant with current industry security standards and web browser requirements. The thumbprint and signature are entirely unrelated. In fact – the thumbprint is not actually a part of the certificate. It’s calculated and displayed for your reference. [1]