Note from the editorial staff: Hey, we screwed up. The original post here contained inaccuracies about base64 encoding which should have been caught before publishing during our review and publishing process. As a result, we have let down you, our readers, the original author who depended on us, and the community that works on Kubernetes security. We are re-evaluating our review processes to ensure that future posts meet your and our own high standards.
In the meantime, we recommend reading How to explain Kubernetes Secrets in plain English for a great summary of Kubernetes secrets.