This will create a new file called ‘certificate.pem’ that contains the SSL certificate in PEM format. Replace ‘certificate.cer’ with the name of your SSL certificate file. To convert cer to pem SSL certificate via OpenSSL, you can use the following OpenSSL command: openssl x509 -in certificate.crt -out certificate.pem -outform PEM Now let us get started with the conversion process: CER to PEM OpenSSL module installed for PowerShell.Plus, you should import and mark it as Exportable/ A Windows Server machine that has a certificate and private key pair installed in it.The SSL certificate file in a format like. ![]() How to Convert CRT to PEM Formats?įor converting SSL files to PEM format, it is important to fulfill these criteria: Let us discuss how to convert SSL certificates PEM format using OpenSSL. Also you can find the difference between CER vs CRT before you convert your CRT file into PEM format. Here, we will talk about how to convert SSL certificates to PEM formats. They are typically an X.509 certificate issued by a certificate authority (CA), which verifies the certificate holder’s identity and ensures that the certificate is secure and trustworthy. SSL (Secure Sockets Layer) certificates are digital certificates used to secure and encrypt data transmitted over the Internet. If you are looking to use the certificate within AWS as a SSL certificate on an Application Load Balancer, then you will need to first import the certificates into Amazon Certificate Manager.ġ.) Login into the Amazon Certificate Managerģ.) In the box labelled “Certificate Body”, paste the contents of cert.pem file.Ĥ.) In the box labelled “Certificate Private Key”, paste the contents of the server.key file.ĥ.) If there is an intermediate certificate authority used by your certificate then copy and paste the public key of any intermediate certificates into the Certificate Chain box.Ħ.) Modify your Application Load Balancer listener endpoints to use the certificate you imported in step 5.Step-by-Step Instructions on How to Convert CRT files to PEM formats Import Certificates into Amazon Certificate Manager Ensure the directory and files themselves are owned by the root user.ģ.) Modify Apache or NGINX configurations to reference the above copied files.Copy PEM and KEY Files to Linuxġ.) Copy the cert.pem and server.key files to your Linux instance.Ģ.) Ensure the right permissions are set on both files: The server.key contains the private key associated with that certificate. The cert.pem file contains the public key of your certificate. pfx -clcerts -nokeys -out cert.pemĤ.) Finally, we will take the output of step 2 and remove the passphrase from it: You will also be prompted to provide a new password for the generated key.pem file, just pick any password for now, we are going to remove it at the end of the tutorial.ģ.) Next, we will export the certificate from the pfx file itself and put it into its own. This will ask you to input the password you set on the PFX file in Step 5 of the previous section. Convert PFX File Format to PEM FormatĢ.) The first step is to export the private key from the PFX file, to do that type: PFX file exported that contains both the public and private keys for the certificate we are looking to convert. Within this, click Next and make sure to check the “Yes, export the private key” option.Ĥ.) For the Export File Format, make sure to check “Personal Information Exchange – PKCS #12” and accept the default checked values underneath it.ĥ.) Set a password that will be used to protect the exported PFX file, note this down for later.Ħ.) Choose a file location and name, and hit “Finish”.Īt this point you now have a. OpenSSL module installed for PowerShell.ġ.) Open up the local machine Certificate Manager (run “certmgr” from the Windows Search box)Ģ.) Find your installed certificate within one of your local certificate stores, right click on it, go to All Tasks -> Export.ģ.) This launches the “Certificate Export Wizard”.The private key must have been imported and marked as Exportable, otherwise this tutorial will not work. ![]()
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