October 2017 – RickyAdams.com

DER vs. CRT vs. CER vs. PEM Certificates and How To Convert Them

October 10, 2017 Ricky Adams

DER vs. CRT vs. CER vs. PEM Certificates and How To Convert Them Certificates and Encodings At its core an X.509 certificate is a digital document that has been encoded and/or digitally signed according to RFC 5280. In fact, the term X.509 certificate usually refers to the IETF’s PKIX Certificate and CRL Profile of the X.509 v3 certificate standard, as specified in RFC 5280, commonly referred to as PKIX for Public Key Infrastructure (X.509). X509 File Extensions The first thing…

Common Java Keytool Keystore Commands

October 7, 2017 Ricky Adams

Java Keytool is a key and certificate management utility. It allows users to manage their own public/private key pairs and certificates. It also allows users to cache certificates. Java Keytool stores the keys and certificates in what is called a keystore. By default the Java keystore is implemented as a file. It protects private keys with a password. A Keytool keystore contains the private key and any certificates necessary to complete a chain of trust and establish the trustworthiness of…