Keytool Generate Public Key From Certificate
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Certificate Signing Request (CSR) Help
Using Java Keytool
For Oracle Weblogic
There is a video for this solution.

Complete the following steps to create your CSR.
1. Before you can create your CSR, you need to create your Java keystore. Your Java keystore contains your private key.
Run the following command to create your 2048 bit Java keystore:

keytool -genkey -alias myalias -keyalg RSA –keysize 2048 -keystore c:yoursite.keystore
2. Note the alias you use here to create the keystore. You will need to use the same alias later when you install your certificate.
Please note: the below example applies to Entrust Certificate Services customers with the intended purpose of using an SSL/TLS certificate purchased from Entrust Datacard.
3. You will be prompted to enter your DN information for your CSR. When it asks for your first and last name, make sure you enter the FQDN of your site. Here is an example:
What is your first and last name?
[Unknown]: http://www.entrust.com/
What is the name of your organizational unit?
[Unknown]: IT
What is the name of your organization?
[Unknown]: Entrust Inc
What is the name of your City or Locality?
[Unknown]: Ottawa
What is the name of your State or Province?
[Unknown]: Ontario
What is the two-letter country code for this unit?
[Unknown]: CA
Is CN=www.entrust.com, OU=IT, O=Entrust Inc, L=Ottawa, ST=Ontario, C=CA correct?

[no]: yes
4. To create your CSR, run the following command:

keytool -certreq -keyalg RSA -alias myalias -file certreq.txt -keystore c:yoursite.mykeystore

5. To find your CSR, enter the command:
type certreq.txt
Your SSL/TLS Certificate should now be installed. If you have any questions or concerns please contact the Entrust Certificate Services Support department for further assistance.

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Outside North America: 1-613-270-2680 (or see the list below)
NOTE: It is very important that international callers dial the UITF format exactly as indicated. Do not dial an extra '1' before the '800' or your call will not be accepted as an UITF toll free call.

CountryNumber
Australia0011 - 800-3687-7863
1-800-767-513
Austria00 - 800-3687-7863
Belgium00 - 800-3687-7863
Denmark00 - 800-3687-7863
Finland990 - 800-3687-7863 (Telecom Finland)
00 - 800-3687-7863 (Finnet)
France00 - 800-3687-7863
Germany00 - 800-3687-7863
Hong Kong001 - 800-3687-7863 (Voice)
002 - 800-3687-7863 (Fax)
Ireland00 - 800-3687-7863
Israel014 - 800-3687-7863
Italy00 - 800-3687-7863
Japan001 - 800-3687-7863 (KDD)
004 - 800-3687-7863 (ITJ)
0061 - 800-3687-7863 (IDC)
Korea001 - 800-3687-7863 (Korea Telecom)
002 - 800-3687-7863 (Dacom)
Malaysia00 - 800-3687-7863
Netherlands00 - 800-3687-7863
New Zealand00 - 800-3687-7863
0800-4413101
Norway00 - 800-3687-7863
Singapore001 - 800-3687-7863
Spain00 - 800-3687-7863
Sweden00 - 800-3687-7863 (Telia)
00 - 800-3687-7863 (Tele2)
Switzerland00 - 800-3687-7863
Taiwan00 - 800-3687-7863
United Kingdom00 - 800-3687-7863
0800 121 6078
+44 (0) 118 953 3088

Apr 23, 2012 Generating a RSA Key with the Java Keytool Use the Java keytool to create public and private keys for RSA authentication if the client is in Java. RSA authentication uses public and private keys instead of passwords to authenticate with the ESP Server.

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To Generate a Certificate by Using keytool

What Is Public Key

  • SSL Certificate CSR Creation for Java Based Web Servers. If you already have your SSL Certificate and just need to install it, see SSL Certificate Installation:: Java Web Servers. How to generate a CSR using Java Keytool.NOTE: You must generate a new keystore through this process.
  • 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. Home » Java » Create Public Private KeyStore for Client and Server. Finally, we import client’s public key certificate.
  • Export the Public Key Certificate. Steps for the Code Receiver. Ray's keystore needs to have the public key corresponding to the private key used to generate the signature. You supply this by sending Ray a copy of the certificate authenticating the public key. Keytool -export -keystore examplestore -alias signFiles -file Example.cer.

By default, the keytool utility creates a keystorefile in the directory where the utility is run.

Before You Begin

To run the keytool utility, your shell environmentmust be configured so that the J2SE /bin directory is inthe path, otherwise the full path to the utility must be present on the commandline.

  1. Change to the directory that contains the keystore and truststorefiles.

    Always generate the certificate in the directory containingthe keystore and truststore files. The default is domain-dir/config.

  2. Generate the certificate in the keystore file, keystore.jks,using the following command format:


    Use any unique name as your keyAlias. Ifyou have changed the keystore or private key password from the default (changeit), substitute the new password for changeit.The default key password alias is s1as.

    A prompt appears that asks for your name, organization, and other information.

  3. Export the generated certificate to the server.cer file(or client.cer if you prefer), using the following commandformat:


  4. If a certificate signed by a certificate authority is required,see To Sign a Certificate by Using keytool.

  5. Create the cacerts.jks truststore file andadd the certificate to the truststore, using the following command format:


    If you have changed the keystore or private key password from the default(changeit), substitute the new password.

    Information about the certificate is displayed and a prompt appearsasking if you want to trust the certificate.

  6. Type yes, then press Enter.

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    Informationsimilar to the following is displayed:


  7. To apply your changes, restart GlassFish Server. See To Restart a Domain.

Example 11–10 Creating a Self-Signed Certificate in a JKS Keystore by Using an RSAKey Algorithm
Keytool Generate Public Key From Certificate

RSA is public-key encryption technology developed by RSA Data Security,Inc.


Generate
Example 11–11 Creating a Self-Signed Certificate in a JKS Keystore by Using a DefaultKey Algorithm


Example 11–12 Displaying Available Certificates From a JKS Keystore


Keytool Generate Private Key From Certificate

Example 11–13 Displaying Certificate information From a JKS Keystore

Keytool Generate Private And Public Key


See Also

Keytool Generate Keystore

For more information about keytool, see the keytool reference page.