My client's company internal CA provided a *.cer file. I already installed this file in the our server using MMC but I also need to add the .crt and .key files to the apache configuration.
How can I get the .crt and .key file from the .cer file that the CA issued?
A
.cerfile is a certificate file. It contains a certificate either in DER format (binary) or PEM format (the same DER formatted binary, base 64 encoded, with header and footer). Usually there is no difference between.cerand.crt: they represent the same (X.509v3) certificate.Generally you create the key pair, then a certificate request which you send to the CA. You get back a certificate for that particular key pair that you created and - hopefully - stored somewhere secure. If you didn't store the private key securely you're out of luck and you should start over again.