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Sep 12, 2014 Generate a CSR from an Existing Private Key. Use this method if you already have a private key that you would like to use to request a certificate from a CA. This command creates a new CSR (domain.csr) based on an existing private key (domain.key): openssl req -key domain.key -new -out domain.csr. Nov 19, 2014 In some cases, you need to export the private key of a '.pfx' certificate in a '.pvk' file and the certificate in a '.cer' file. For example: To generate certificates with makecert but by using your certification authority created on Windows Server. Nodes: private key will not be encrypted.-out: specifies the output filename to write to.-keyout: filename to write the newly created private key to. $ openssl pkcs12 -export -in cert.crt -inkey cert.key -out cert.pfx Generate a New Private Key and Certificate Signing Request (CSR).
Creating a PFX file with chain
In some cases it’s necessary to create a pfx file which contains the root and intermediate certificates. We have an application that will not accept the certificate without the certificate chain in there. So here’s how to make that work.
Sep 03, 2018 View the generated private key to see if it is encrypted. If the first line of the private key file contains the text BEGIN ENCRYPTED PRIVATE KEY, it is encrypted and you must decrypt it before proceeding. Execute the following command to decrypt the private key: $ openssl rsa -in domain.key.
Easiest way is to start notepad twice. With one of the notepads open your intermediate certificate. Copy the content of the intermediate certificate to your empty notepad.
Now open up your root certificate and just paste the contents below your intermediate certificate.
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Save your new certificate to something like verisign-chain.cer. Now fire up openssl to create your .pfx file. The command you need to use is:
pkcs12 -export -out your_cert.pfx -inkey your_private.key -in your_cert.cer -certfile verisign-chain.cer
You need to enter the password corresponding to your private key and a new password to protect your new .pfx file
That’s all there is to it.