the ssl certificate is tied into a domain name - so simply inspect the certificate and if the domain listed is *.domain.com then it is a wildcard - if the domain is domain.com then it is specific to that domain.
To transform one type of encoded certificate to another — such as converting CRT to PEM, CER to PEM, and DER to PEM — you’ll want to use the following commands: OpenSSL: Convert CRT to PEM: Type the following code into your OpenSSL client: openssl x509 -in cert.crt -out cert.pem. OpenSSL: Convert CER to PEM. openssl x509 -in cert.cer -out Jun 09, 2020 · Obtain a trusted CA certificate from an external Certificate Authority, or create one using your own internal CA, for example, with OpenSSL tools. Then, use the following procedure to upload the certificate. the ssl certificate is tied into a domain name - so simply inspect the certificate and if the domain listed is *.domain.com then it is a wildcard - if the domain is domain.com then it is specific to that domain. openssl x509 -outform der -in certificate.pem -out certificate.der. Convert PEM to P7B. openssl crl2pkcs7 -nocrl -certfile certificate.cer -out certificate.p7b -certfile CACert.cer. Convert PEM to PFX. openssl pkcs12 -export -out certificate.pfx -inkey privateKey.key -in certificate.crt -certfile CACert.crt OpenSSL commands to convert DER file A wildcard SSL certificate is where the SSL certificate is good for both the root domain and all subdomains. If we had a wildcard certificate for example.com it means the certificate will be valid for vpn.example.como, mail.example.com, blog.example.com, and example.com.
Converting Certificates - OpenSSL :: GlobalSign Support
Convert a Certificate to PEM: CRT to PEM, CER to PEM, DER
How to create a self-signed SSL certificate for multiple
Jul 16, 2020 · To generate a self-signed SSL certificate using the OpenSSL, complete the following steps: Write down the Common Name (CN) for your SSL Certificate. The CN is the fully qualified name for the system that uses the certificate. I am trying to install a Wildcard SSL Certificate in IIS on Windows Server. It only accepts the .pfx file format for importing & installing an SSL certificate for hosted applications. I got the .csr file from CA as it was a wildcard cert. I downloaded and installed OpenSSL for Windows (Latest version). Self-Signed Wildcard certificate with SAN using openssl / SSL Raw. instructions.md Copy the default template of openssl.cnf to a writable location. cp /System/Library Dec 02, 2018 · openssl req -out sslcert.csr -newkey rsa:2048 -nodes -keyout private.key -config san.cnf. This will create sslcert.csr and private.key in the present working directory. You have to send sslcert.csr to certificate signer authority so they can provide you a certificate with SAN. How to verify CSR for SAN? Wildcard ssl certificate using subjectAltName. To quote rfc 2818: If a subjectAltName extension of type dNSName is present, that MUST be used as the identity. Wildcard SSL certificates will allow you to secure an unlimited number of subdomains for a registered base-domain. Let's say you own the base-domain example.com. A wildcard certificate for *.example.com can secure any-subdomain.example.com. The asterisk (*), or star, is the wildcard and can be any valid subdomain. About the Common Name (CN) You can create wildcard certificate CSR using OpenSSL, which is the most commonly used platform for CSR generation. It can be done via the following steps: It can be done via the following steps: Step 1: Access the terminal client in your web server.