This post is older than a year. Consider some information might not be accurate anymore.

Go to the url in browser that's uses jks with the red line and there will be a lock symbol to the left by clicking on the not secure part, information dialog opens up click on certificate (invalid) and when it opens click on Details press on copy to file. And follow instruction. Converting JKS Key and Certificate to PEM This process uses both Java keytool and OpenSSL (keytool and openssl, respectively, in the commands below) to export the composite private key and certificate from a Java keystore and then extract each element into its own file.

I faced the situation, that I have to create a CSR.

  • Unlike.pem files, this container is fully encrypted. Openssl can turn this into a.pem file with both public and private keys.cert.cer.crt A.pem (or rarely.der) formatted file with a different extension, one that is recognized by Windows Explorer as a certificate, which.pem is not.jks.
  • Converting PEM-format keys to JKS format This topic describes how to convert PEM-format certificates to the standard Java KeyStore (JKS) format. The Java KeyStores can be used for communication between components that are configured for SSL (for example, between Studio and the Oracle Endeca Server, if both are SSL-enabled).
  • Openssl pkcs12 -in certificate.pfx -out certificate.cer -nodes. If you need to convert a Java Keystore file to a different format, it usually easier to create a new private key and certificates but it is possible to convert a Java Keystore to PEM format.
In public key infrastructure (PKI) systems, a certificate signing request (also CSR or certification request) is a message sent from an applicant to a certificate authority in order to apply for a digital identity certificate.

Wikipedia, 2016-08-10 To create a CSR you need a private key. My problem was there is an existing key stored in a java keystore (JKS). This post describes the steps how to extract it and store it as PEM format.

The private key itself is password protected, so keep in mind that after every command I needed to enter the password.

Check keystore contents

Next step is to convert it to pkcs12 format, to convert it into pem format

Jks

Convert Jks To Pem Without Openssl

Use openssl to convert it into pem.

Et voila:

Pem To Jks Conversion

EDIT: Just use the shortcut

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