$ openssl genrsa -out rootkey.pem 1024 $ openssl req -new -key rootkey.pem -sha1 -out rootreq.pem You are about to be asked to enter information that will be incorporated into your certificate request. What you are about to enter is what is called a Distinguished Name or a DN. There are quite a few fields but you can leave some blank For some fields there will be a default value, If you enter '.', the field will be left blank. ----- Country Name (2 letter code) []:GB State or Province Name (full name) []:London Locality Name (eg, city) []:London Organization Name (eg, company) []:Test Organizational Unit Name (eg, section) []:basic server Common Name (eg, fully qualified host name) []:ROOT Email Address []: Please enter the following 'extra' attributes to be sent with your certificate request A challenge password []: An optional company name []: $ openssl x509 -req -in rootreq.pem -sha1 -extensions v3_ca -signkey rootkey.pem -out rootcert.pem -days 10000 Signature ok subject=/C=GB/ST=London/L=London/O=Test/OU=basic server/CN=ROOT Getting Private key $ cp rootcert.pem serverTrustedCAs.pem $ cp rootcert.pem clientTrustedCAs.pem $ openssl genrsa -out clientPrivKey.pem 1024 $ openssl req -new -key clientPrivKey.pem -sha1 -out clientReq.pem You are about to be asked to enter information that will be incorporated into your certificate request. What you are about to enter is what is called a Distinguished Name or a DN. There are quite a few fields but you can leave some blank For some fields there will be a default value, If you enter '.', the field will be left blank. ----- Country Name (2 letter code) []:GB State or Province Name (full name) []:London Locality Name (eg, city) []:London Organization Name (eg, company) []:Test Organizational Unit Name (eg, section) []:basic server Common Name (eg, fully qualified host name) []:CLIENT Email Address []: Please enter the following 'extra' attributes to be sent with your certificate request A challenge password []: An optional company name []: $ cat rootcert.pem rootkey.pem > root.pem $ echo 01 > root.srl $ openssl x509 -req -in clientReq.pem -sha1 -extensions usr_crt -CA root.pem -CAkey root.pem -out clientCerts.pem -days 10000 $ openssl genrsa -out serverPrivKey.pem 1024 $ openssl req -new -key serverPrivKey.pem -sha1 -out serverReq.pem You are about to be asked to enter information that will be incorporated into your certificate request. What you are about to enter is what is called a Distinguished Name or a DN. There are quite a few fields but you can leave some blank For some fields there will be a default value, If you enter '.', the field will be left blank. ----- Country Name (2 letter code) []:GB State or Province Name (full name) []:London Locality Name (eg, city) []:London Organization Name (eg, company) []:Test Organizational Unit Name (eg, section) []:basic server Common Name (eg, fully qualified host name) []:SERVER Email Address []: Please enter the following 'extra' attributes to be sent with your certificate request A challenge password []: An optional company name []: $ openssl x509 -req -in serverReq.pem -sha1 -extensions usr_crt -CA root.pem -CAkey root.pem -out serverCerts.pem -days 10000