- Jan 14, 2020 The Java keytool is a command-line utility used to manage keystores in different formats containing keys and certificates. You can use the java keytool to generate a secret key in a keystore. In many respects, the java keytool is a competing utility with openssl for keystore, key, and certificate management. What is a secret key?
- If at all possible I would consider creating a new keystore in OpenSSL and new keys rather than trying to pry out the private key from the Java keystore. By opening the Java keystore and extracting the private key one is moving beyond the designed security features.
- In this tutorial, we demonstrate how to extract a private key from the Java KeyStore (JKS) in your projects using OpenSSL and Keytool. Over a million developers have joined DZone.
Type the following command in your command window to create a keystore named examplestore and to generate keys: keytool -genkey -alias signFiles -keystore examplestore You will be prompted to enter passwords for the key and keystore. Oct 15, 2014 Introduction. 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.
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.
Fill in the details, click Generate, then paste your customized Keytool CSR command into your terminal.
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.
Where do I paste this command?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 |
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.
![Keystore Keystore](/uploads/1/2/6/1/126117452/778544722.png)
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:
Java Keystore Generate Secret Key Code
- 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.