Generate Rsa Keys Using Java
Generate RSA keys with SSH by using PuTTYgen. Last updated on: 2016-06-23; Authored by: Rackspace Support; One effective way of securing SSH access to your cloud server is to use a public-private key pair. This means that a public key is placed on the server and a private key is placed on your local workstation. Using a key pair makes it. Jun 18, 2014 In Java generating public private key using RSA algorithm is quite easy as it provides lib to do these tasks. In Java java.security package contains classes to do these operation. Generating public private key pairs. By using KeyPairGenerator class we can generate public/private key pairs as given below. Oct 02, 2015 SSH Config and crypto key generate RSA command. Use this command to generate RSA key pairs for your Cisco device (such as a router). Keys are generated in pairs–one public RSA key and one private RSA key. If your router already has RSA keys when you issue this command, you will be warned and prompted to replace the existing keys with new keys.
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 –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.
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Generate Rsa Keys Using Java File
Generate the server certificate.
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: