Generate A Private Key Java Keytool
Java Keytool CSR Wizard
The fastest way to create your CSR for Tomcat (or any platform using Keytool).
Fill in the details, click Generate, then paste your customized Keytool CSR command into your terminal.
Java Keytool is a command line utility which can be used to generate keystores and then we can export keys and self signed public certificates from it with different command options provided by Java Key Tool. In this step by step Java Keytool tutorial, I will explain how to create a key store using Java Keytool and then how to export public. Oct 15, 2014 Java Keytool is a key and certificate management tool that is used to manipulate Java Keystores, and is included with Java. A Java Keystore is a container for authorization certificates or public key certificates, and is often used by Java-based applications for encryption, authentication, and serving over HTTPS.
Jan 25, 2018 Java keytool genkey FAQ: Can you share some examples of the Java keytool genkey command, and the genkey process? In my previous article on the Java keytool command, keystore files, and certificates, I demonstrated how to generate a private key with the keytool genkey option, but to simplify things a little, I thought I'd demonstrate the keytool/genkey command again here by itself. The keytool command creates the keystore named examplestore (if it doesn't already exist) in the same directory in which the command is executed. The command generates a public/private key pair for the entity whose distinguished name has a common name of Susan Jones and the organizational unit of Purchasing. Java Keytool can be used to generate Java keystores, certificate signing requests (CSRs), convert certificate formats, and other certificate related functions. Keytool is bundled with Oracle's JDK. This article will walk through generating a CSR as well as generating a private key if one is not already available.
Note: After 2015, certificates for internal names will no longer be trusted.
Common Name (Server Name) The fully qualified domain name that clients will use to reach your server. To secure https://www.example.com, your common name must be www.example.com or *.example.com for a wildcard certificate. Less commonly, you may also enter the public IP address of your server. Department (optional) Many people leave this field blank. This is the department within your organization which you want to appear in the certificate. It will be listed in the certificate's subject as Organizational Unit, or 'ou.' Common examples:
City The city where your organization is legally located. State or Province The state or province where your organization is legally located. Country We guessed your country based on your IP address, but if we guessed wrong, please choose the correct country. If your country does not appear in this list, there is a chance we cannot issue certificates to organizations in your country. Organization name The exact legal name of your organization. Example: 'DigiCert, Inc.' Less commonly, if you do not have a legal registered organization name, you should enter your own full name here. Key Size Key sizes smaller than 2048 are considered insecure. Now just copy and paste this command into a terminal session on your server. Your CSR will be written to ###FILE###.csr. |
For other OS/Platform instructions, see SSL Certificate Installation Instructions & Tutorials.
After you create a Certificate Signing Request (CSR) and order your certificate, you still need to install it.
See Tomcat Web Server SSL Certificate Installation or SSL Certificate Installation :: Java Web Servers.
You can run this command wherever you have the keytool command available—most likely on your server, but you can also run it on your own computer since Mac OS X comes with Java installed. Just make sure you keep track of your keystore file after you create your CSR, because you'll need that file because it will contain your private key, and it will be required to install your certificate.
The keytool program has to exist in your PATH. You can find out if it is by typing 'keytool' into your terminal session and seeing if you get a 'command not found' error. If keytool is not in your PATH environment variable, you can either add your JDK's bin directory to the PATH, or adjust the two keytool commands in the customized CSR command you generated above. What happens when I run this command?You will be asked to choose a keystore password to protect your new keystore file. Then press RETURN to use the same password for the certificate's private key. Then you will be asked to type the keystore password once more to create the CSR file.
The Java keytool utility creates both your private key and your certificate signing request, and saves them to two files: your_common_name.jks, and your_common_name.csr. You can then copy the contents of the CSR file and paste it into the CSR text box in our order form.
What kind of certificate should I buy?If you want an SSL certificate for Tomcat, your best options are Single certificates and Wildcard certificates.
A DigiCert Wildcard can protect all server names on your domain (such as *.example.com). Our unlimited server license lets you protect all your servers for just one price. Many of our customers save thousands of dollars per year by using a DigiCert Wildcard.
| Per Year Pricing | ||||
|---|---|---|---|---|
| 2 Years | $653 per year | ($1,307) | (You Save 10%) | |
| 1 Year | $688 | |||
Single certificates are able to protect one server name, such as mail.example.com. If you only need SSL for one hostname, a single certificate will work perfectly.
| Per Year Pricing | ||||
|---|---|---|---|---|
| 2 Years | $207 per year | ($414) | (You Save 10%) | |
| 1 Year | $218 | |||
Keytool Create A Keystore
What if I need Subject Alternative Names?
Multi-Domain (SAN) Certificates allow you to assign multiple host names—known as Subject Alternative Names or SANs—in one certificate.
Use your primary server name as the Common Name for your CSR, then place an order for a Multi-Domain Certificate and specify the other names during the order process. Our Multi-Domain Certificate ordering process will let you specify all the names you need without making you include them in the CSR.
Related:
- Learn more about what our Wildcard certificate can do for you.
- A similar CSR Tool is available for creating CSRs with OpenSSL.
- Learn more about Java 7 Update 51: Code Signatures Now Required.
To Use keytool to Create a ServerCertificate
Run keytool to generate a new key pair in the defaultdevelopment keystore file, keystore.jks. This exampleuses the alias server-alias to generate a new public/privatekey pair and wrap the public key into a self-signed certificate inside keystore.jks. The key pair is generated by using an algorithm oftype RSA, with a default password of changeit. For moreinformation and other examples of creating and managing keystore files, readthe keytool online help at http://download.oracle.com/javase/6/docs/technotes/tools/solaris/keytool.html.
Note –Private Key Definition
RSA is public-key encryption technology developed by RSA DataSecurity, Inc.
From the directory in which you want to create the key pair, run keytool as shown in the following steps.
Public Private Key Encryption
Generate the server certificate.
Office 2007 vlk key. Type the keytool command all on one line:
When you press Enter, keytool prompts you to enterthe server name, organizational unit, organization, locality, state, and countrycode.
You must type the server name in response to keytool’sfirst prompt, in which it asks for first and last names. For testing purposes,this can be localhost.
When you run the example applications, the host (server name) specifiedin the keystore must match the host identified in the javaee.server.name property specified in the file tut-install/examples/bp-project/build.properties.
Export the generated server certificate in keystore.jks intothe file server.cer.
Type the keytool commandall on one line:
If you want to have the certificate signed by a CA, read the exampleat http://download.oracle.com/javase/6/docs/technotes/tools/solaris/keytool.html.
To add the server certificate to the truststore file, cacerts.jks, run keytool from the directory where you createdthe keystore and server certificate.
Use the following parameters:
Information on the certificate, such as that shown next, will appear:
Type yes, then press the Enter or Return key.
The following information appears: