Generate Public Key And Private Key Using Keytool

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. I'm reading about using the keytool command to generate a certificate from the oracle guide.The part I don’t understand is it says after running the command keytool -genkey., it creates a public/private key.

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?
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, 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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If a code signer does not yet have a suitable private key for signing the code, the key must first be generated, along with a corresponding public key that can be used by the code receiver's runtime system to verify the signature.

Since this lesson assumes that you don't yet have such keys, you are going to create a keystore named examplestore and create an entry with a newly generated public/private key pair (with the public key in a certificate).

Generate Public Key And Private Key Using Keytool Windows 10

Type the following command in your command window to create a keystore named examplestore and to generate keys:

You will be prompted to enter passwords for the key and keystore.

Subparts of the keytool Command

Let's look at what each of the keytool subparts mean.

  • The command for generating keys is -genkey.
  • The -alias signFiles subpart indicates the alias to be used in the future to refer to the keystore entry containing the keys that will be generated.
  • The -keystore examplestore subpart indicates the name (and optionally path) of the keystore you are creating or already using.
  • The storepass value that you are promted for specifies the keystore password.
  • The keypass value that you are prompted for specifies a password for the private key about to be generated. You will always need this password in order to access the keystore entry containing that key. The entry doesn't have to have its own password. When you are prompted for the key password, you are given the option of letting it be the same as the keystore password.

Note: For security reasons you should not set your key or keystore passwords on the command line, because they can be intercepted more easily that way.

Distinguished-Name Information

If you use the preceding keystore command, you will be prompted for your distinguished-name information. Following are the prompts; the bold indicates what you should type.

Private key bitcoin

Command Results

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.

Private Key Bitcoin

The command creates a self-signed certificate that includes the public key and the distinguished-name information. (The distinguished name you supply will be used as the 'subject' field in the certificate.) This certificate will be valid for 90 days, the default validity period if you don't specify a -validity option. The certificate is associated with the private key in a keystore entry referred to by the alias signFiles.

Generate Public Key From Private Key Keytool

Self-signed certificates are useful for developing and testing an application. However, users are warned that the application is signed with an untrusted certificate and asked if they want to run the application. To provide users with more confidence to run your application, use a certificate issued by a recognized certificate authority.

Private Key Definition

Note: The command could be shorter if option defaults are accepted or you wish to be prompted for various values. Whenever you execute a keytool command, defaults are used for unspecified options that have default values, and you are prompted for any required values. For the genkey command, options with default values include alias (whose default is mykey), validity (90 days), and keystore (the file named .keystore in your home directory). Required values include dname, storepass, and keypass.