The public certificate you received from your Certificate Authority (CA).
If your CER file is in binary DER format, you must first convert it to PEM: openssl x509 -inform der -in certificate.cer -out certificate.pem . Method 2: Using Windows MMC (GUI Method) cer to pfx
Converting a file to a PFX format is a critical task for system administrators and developers who need to bundle a public certificate with its private key for use in environments like Microsoft IIS , Azure App Service , or Java keystores . While a CER file typically contains only the public key or certificate, a PFX (Personal Information Exchange) file is an encrypted container that holds the complete certificate chain and the corresponding private key. The public certificate you received from your Certificate
: (Optional) Includes intermediate/root certificates to ensure the certificate is trusted by browsers. While a CER file typically contains only the
openssl pkcs12 -export -out certificate.pfx -inkey privateKey.key -in certificate.cer -certfile CACert.crt Use code with caution. : Tells OpenSSL to create a PKCS#12 (PFX) file. -out : The name of your new PFX file. -inkey : Your private key file. -in : Your public CER/CRT file.
Below is a comprehensive guide on how to perform this conversion using various tools across different operating systems. Before starting, ensure you have the following:
If your CER file is in format, use this command: