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.

org.shredzone.acme4j.exception.AcmeNetworkException: Network error at org.shredzone.acme4j.connector.DefaultConnection.sendRequest(DefaultConnection.java:152) at org ...

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 ...