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Can a certificate thumbprint be faked?
Security researchers have shown that SHA-1 can produce the same value for different files, which would allow someone to make a fraudulent certificate that appears real. While signatures are used for security, thumbprints are not.
How do I trust a CA certificate?
Add Trust with a Certificate Authority (CA)
- Create a Certificate Authority.
- Generate new key and certificate request.
- Self-sign the request to generate a CA certificate.
- Create a server certificate and use the CA to sign it.
- Allow clients to trust the root CA.
What is a possible risk of trusting a CA?
They can: Abuse existing certificates to appear legitimate, which can be disastrous if the threat actors have the private key. Drop legitimate certificates in the Untrusted Certificate store, so legitimate programs are no longer able to run, or certain websites are no longer accessible.
Is certificate fingerprint same as thumbprint?
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. The Certificate Fingerprint is a digest (hash function) of a certificate in x509 binary format.
Are SHA1 certificates insecure?
While SSL certificates are currently secure, Google considers the SHA-1 hash algorithm insecure after 2016. This is due to reports from some security companies, that online attackers could feasibly compromise SSL certificates keyed with SHA-1 hash.
How do I trust a website certificate?
Navigate to the site with the cert you want to trust, and click through the usual warnings for untrusted certificates. In the address bar, right click on the red warning triangle and “Not secure” message and, from the resulting menu, select “Certificate” to show the certificate.
How to retrieve the thumbprint of a certificate?
To retrieve a certificate’s thumbprint Open the Microsoft Management Console (MMC) snap-in for certificates. In the Console Root window’s left pane, click Certificates (Local Computer). Click the Personal folder to expand it. Click the Certificates folder to expand it. In the list of certificates, note the Intended Purposes heading.
How to get a CA thumbprint for an IDP?
By supplying the CA’s certificate thumbprint, you trust any certificate issued by that CA with the same DNS name as the one registered. This eliminates the need to update trusts in each account when you renew the IdP’s signing certificate.
Why do I need a thumbprint for IAM?
IAM requires the thumbprint for the root or intermediate certificate authority (CA) that signed the certificate used by the external identity provider (IdP). The thumbprint is a signature for the CA’s certificate that was used to issue the certificate for the OIDC-compatible IdP.
When do I need a CA thumbprint for AWS?
When you create an IAM OIDC identity provider, you are trusting identities authenticated by that IdP to have access to your AWS account. By supplying the CA’s certificate thumbprint, you trust any certificate issued by that CA with the same DNS name as the one registered.