generate self signed certificate with keytool

certificateKeytool.txt

To generate a self-signed SSL certificate using the keytool command on Windows, Mac, or Linux:

   1 Open a command prompt or terminal.
   2 Run this command:

    keytool -genkey -keyalg RSA -alias tomcat -keystore selfsigned.jks -validity <days> -keysize 2048

    Where <days> indicate the number of days for which the certificate will be valid.

  3  Enter a password for the keystore. Note this password as you require this for configuring the server.
   4 When prompted for first name and last name, enter the domain name of the server. For example, myserver or myserver.mycompany.com.
   5 Enter the other details, such as Organizational Unit, Organization, City, State, and Country.
   6 Confirm that the information entered is correct.
   7 When prompted with Enter key password for <tomcat>, press Enter to use the same password as the keystore password.
  8  Run this command to verify the contents of the keystore:

    keytool -list -v -keystore selfsigned.jks

   9 When prompted, enter the keystore password note in Step 3. The basic information about the generated certificate is displayed. Verify that the Owner and Issuer are 

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