Keytool -list -v -keystore keystore.jks The most important thing you want to see is that, under the private key alias, additional information is being displayed. You're looking for this: Certificate chain length: 2 How to import existing.key and.crt into.jks. Assume you have an existing.key and.crt from your Apache configuration. Generate a Self Signed Certificate using Java Keytool Now that you know when to use a Keytool self signed certificate, let's create one using a simple Java Keytool command: Open the command console on whatever operating system you are using and navigate to the directory where keytool.exe is located (usually where the JRE is located, e.g.
Apr 16, 2016 WSO2 products are shipped with jks key store. In this post we are going to see how to extract the public key certificate and private key from wso2cabon.jks to PEM using keytool and openssl. Convert JKS to PCKS12 using keytool keytool -importkeystore -srckeystore wso2carbon.jks -destkeystore mystore.p12 -srcstoretype JKS -deststoretype PKCS12 -srcstorepass wso2carbon -deststorepass. 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. Mar 29, 2016 This tutorial explains how to create a public private keystore for client and server. You can use these keystores to secure communication between client and server. Following steps are required for generating a public private keystore.
Securing your Java application with an SSL certificate can be extremely important. Fortunately, it is (usually) quite simple to do using Java Keytool. Most situations require that you buy a trusted certificate, but there are many cases when you can generate and use a self signed certificate for free.
When to Use a Keytool Self Signed Certificate
An SSL certificate serves two essential purposes: distributing the public key and verifying the identity of the server so users know they aren't sending their information to the wrong server. It can only properly verify the identity of the server when it is signed by a trusted third party. A self signed certificate is a certificate that is signed by itself rather than a trusted authority. Since any attacker can create a self signed certificate and launch a man-in-the-middle attack, a user can't know whether they are sending their encrypted information to the server or an attacker. Because of this, you will almost never want to use a self signed certificate on a public Java server that requires anonymous visitors to connect to your site. However, self signed certificates have their place:
Never use a self signed certificate on an e-commerce site or any site that transfers valuable personal information like credit cards, social security numbers, etc.
- An Intranet. When clients only have to go through a local Intranet to get to the server, there is virtually no chance of a man-in-the-middle attack.
- A Java development server. There is no need to spend extra cash buying a trusted certificate when you are just developing or testing an application.
- Personal sites with few visitors. If you have a small personal site that transfers non-critical information, there is very little incentive for someone to attack the connection.
Just keep in mind that visitors will see a warning in their browsers (like the one below) when connecting to a server that uses a self signed certificate until it is permanently stored in their certificate store.
Generate a Self Signed Certificate using Java Keytool
Now that you know when to use a Keytool self signed certificate, let's create one using a simple Java Keytool command:
- Open the command console on whatever operating system you are using and navigate to the directory where keytool.exe is located (usually where the JRE is located, e.g. c:Program FilesJavajre6bin on Windows machines).
- Run the following command (where validity is the number of days before the certificate will expire):
keytool -genkey -keyalg RSA -alias selfsigned -keystore keystore.jks -storepass password -validity 360 -keysize 2048
- Fill in the prompts for your organization information. When it asks for your first and last name, enter the domain name of the server that users will be entering to connect to your application (e.g. www.google.com)
This will create a keystore.jks file containing a private key and your sparklingly fresh self signed certificate. Now you just need to configure your Java application to use the .jks file. If you are using Tomcat, you can follow our Tomcat SSL Installation Instructions.
For more information on creating a Java Keytool Self Signed Certificate, see the following links:
Originally posted on Sat Oct 30, 2010
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Steps to generate self-signed PKCS#12 SSL certificate and export its keys:
Import Certificate Using Keytool
1- Create PKCS#12 keystore (.p12 or .pfx file)
myKeystore.p12
= keystore filename. It can with .pfx extension as well.MY_PASSWORD
= password used for the keystore and the private key as well.CN
= commonName, it will be shown as certiciate name in certificates list.OU
= organizationUnit, department name for example.O
= organizationName, the company name.L
= localityName, the city.S
= stateName, the state.C
= country, the 2-letter code of the country.
Note: This step can be done using openssl but it's more complicated.
Keytool Generate Cert
2- Create the public certificate (has the header
-----BEGIN CERTIFICATE-----
):Using
keytool
:Or using
openssl
:Note: Import public-certificate.pem into browsers to trust it. Add it to 'Trusted Root Certification Authorities' certificate store.
Keytool Generate Keystore
3- Export the private key (has the header
-----BEGIN PRIVATE KEY-----
):Keytool Generate Private Key And Certificate
4- Export the public key from the private key (has the header
-----BEGIN PUBLIC KEY-----
):