How do I update the trust chain in an existing keystore for a specific keystore entry? OpenSSL options for creating PKCS12 keystore from an existing private key and certificate The name of the newly created pkcs12 keystore openssl pkcs12 \ -export \ -in certificate.pem \ -inkey key.pem \ -out keystore.p12 OpenSSL Option Alternatively, you can import the chain in a later step detailed below with the heading “How do I update the trust chain in an existing keystore for a specific keystore entry?”. Note that if the certificate.pem file contains the entire certificate chain it will be imported into the keystore as part of the private key entry. To create the keystore from an existing private key and certificate, run the following command. While some configurations require the certificate and private key to be in separate files with pointers to them, it is becoming more common for configuration to point to a keystore instead. How do I create a PKCS12 keystore from an existing private key and certificate using openssl? Keytool genkey options for PKCS12 keystore Size of the generated private key in bits Validity of the certificate associated with the key entry Password to set on both the key entry and keystore Key algorithm of key entry to be generated Keystore generation option breakdown: Keytool option Using the Java Keytool, run the following command to create the keystore with a self-signed certificate: keytool -genkey \ -alias somealias \ -keystore keystore.p12 \ How do I create a keystore with a self-signed certificate using the java keytool? With that said, this post strives to provide examples to common commands used to create and manage PKCS12 keystores that will hopefully make your life on the job a bit easier.įor numerous examples of converting to and from pkcs12 that may not be covered in this article you can read more here. It is recommended to migrate to PKCS12 which is an industry standard format The JKS keystore uses a proprietary format. In fact, if you choose to generate a JKS keystore with the Java Keytool you will receive the following warning: The PKCS12 keystore is non-proprietary unlike the JKS and is becoming the most commonly used format. Unfortunately, there is not 100% coverage in all commands for maintaining PKCS #12 keystores in either OpenSSL or the Java Keytool so you must use both for comprehensive coverage of all the functions for maintaining your keystore. RFC 7292 goes into much much much more detail about the PKCS #12 standard: If you are in the market of purchasing a new SSL Certificate, start here. pfx for clarity, but may be anything you choose. The keystore’s purpose is to store the credential of an identity, being a person, client, or server. The keystore may contain both private keys and their corresponding certificates with or without a complete chain. A pkcs12 keystore is commonly used for both S/MIME User Certificates and SSL/TLS Server Certificates.
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