Most OpenSSL Commands

      Convert PEM to DER:

       openssl x509 -outform der -in certificate.pem -out certificate.der

       Convert DER to PEM:

       openssl x509 -inform der -in certificate.der -out certificate.pem

       Convert PEM/CRT to P7B:

       openssl crl2pkcs7 -nocrl -certfile certificate.crt -out certificate.p7b -certfile CACert.crt

       Convert P7B to PEM/CRT:

       openssl pkcs7 -print_certs -in certificate.p7b -out certificate.crt

        Convert PEM/CRT & Private Key to PFX/P12:

       openssl pkcs12 -export -out certificate.pfx -inkey privateKey.key -in certificate.crt -certfile CACert.crt

        Convert P7B to PFX:

        openssl pkcs12 -export -in certificate.cer -inkey privateKey.key -out certificate.pfx -certfile CACert.cer

        Convert PFX to PEM/CRT and Private Key

                 openssl pkcs12 -in certificate.pfx -out certificate.crt -nodes

   

         OpenSSL command to remove private key password

                                              Or

          To convert simple private to   RSA   private.key

        openssl rsa -in file.key -out newfile.key

   

    openssl command print out md5 checksums of the certificate and key

        openssl x509 -noout -modulus -in server.crt| openssl md5

                openssl rsa -noout -modulus -in server.key| openssl md5