This is fairly easy to do with the openssl command and its client functionality. Well we can here use openssl for the rescue. Also, many of these formats can contain multiple items, such as a private key, certificate, and CA certificate, in a single file. (So I can keep it in other place for visual comparison---in case I need to connect and really don't trust the network?) I was working from console connection and couldn’t copy/paste details from the session. If you needed to get fingerprint details of the certificate in MD5, SHA1 or SHA256 format then you have run below steps on the extracted certificate file on macOS. "-md5" - Use the MD5 digest algorithm to generate the fingerprint "-sha1" - Use the SHA-1 digest algorithm to generate the fingerprint ⇒ OpenSSL "x509 -x509toreq" - Conver Certificate to CSR openssl dgst -sha1 certificate.der How to view an X.509 PEM certificate's fingerprint using `openssl` commands. What I've done so far: Before you can obtain the thumbprint for an OIDC IdP, you need to obtain the OpenSSL command-line tool. (I always specify the fingerprint to check in getmail's configuration file, and I get this fingerprint from the OpenSSL command-line tool.) The decoder converts the CSR/certificate to DER format before calculating the fingerprint. The solution? Click View to open the Mozilla Certificate Viewer. Click the tab Your Certificates or the tab of your choice. OpenSSL can be used to convert certificates to and from a large variety of these formats. I'm looking for the equivalent of the following command: openssl x509 -noout -fingerprint -sha256 -inform pem -in cert.crt. SHA256: Here's the full code to get the fingerprint … The following little script will take a given domain (no https prefix) and an SHA-1 fingerprint, and exit with no error (0) if the retrieved fingerprint matches, but with exit code 1 if there is no match. Under tls.ConnectionState, PeerCertificates gives the certificates for that TLS connection. Then click the line containing your selection, which the certificate should be highlighted thereafter. I have just created a certificate for my Apache SSL host using: ... Now what is the correct way to get the fingerprint out of it? my iCloud Account, accoding to apple.com this looks like. For e.g. The challenge? You use this tool to download the OIDC IdP's certificate chain and produce a thumbprint of the final certificate in the certificate chain. There are a variety of other certificate encoding and container types; some applications prefer certain formats over others. That returns a tls.ConnectionState. To get the SHA1 fingerprint of a certificate using OpenSSL, use the command shown below. You can use our CSR and Cert Decoder to get the SHA1 fingerprint of a certificate or CSR. "-fingerprint" - Print out a fingerprint (digest) of the certificate. 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