Modern secure communication heavily relies on TLS/SSL certificates and public-private key cryptography. In Java, certificates and keys are stored in containers called keystores and truststores.

Java KeyStore (JKS) は、セキュリティ証明書（認証証明書または公開鍵証明書のいずれか）と、対応する秘密鍵のリポジトリで、たとえば SSL 暗号化で使用されます。 IBM WebSphere Application Server および Oracle WebLogic Server では、拡張子 jks のファイルがキーストアとし ...

So, a client wants us to use a client cert to authenticate to their web service. They sent it to me in pkcs12 format but without a password. (This is for their uat site, the prod pkcs12 file has a ...