clarifies README

README.md

@@ -1,4 +1,11 @@
-## howto create a gpg key
+# GPG Key Repo
+
+Purpose: Manage gpg keys for:
+* SOPS
+
+# Key Management
+
+## howto create and add a gpg key
 - please follow instruction on following link: https://docs.github.com/en/authentication/managing-commit-signature-verification/generating-a-new-gpg-key
 - add ONLY the _PUBLIC_ part of your gpg key!!!
 - checkin via MergeRequest/PullRequest
@@ -9,16 +16,47 @@ gpg --import /path/to/keys/*.gpg.pub
 ### list imported gpg keys
 gpg --list-keys --keyid-format=long
 
+# EOL: Archive Expired Keys
+
+To mark a key as expired, move it to the `archive/` dir as follows:
+
+```bash
+mv ${keyname} "archive/${keyname}_$(date '+%Y-%m-%d').archive"
+```
+
 # Configure SOPS
 
+SOPS is used for encrypting secrets, e.g. credentials for various systems
+
+
+## Install
+
+https://github.com/getsops/sops
+
+Note:
+* MacOS: If desired, one can also use brew to install sops: `brew install sops`; although this is not officially maintained, [the formula is essentially the same as the official installation instructions](https://github.com/Homebrew/homebrew-core/blob/4496ce5131bc09e7065fa0aa8fb96366a3df6477/Formula/s/sops.rb)
+
+## Usage
+
+Decrypt and Display Secrets in Terminal:
+
 ```bash
 GPG_TTY=$(tty) sops secrets.yaml
 ```
 
-Note: GPG_TTY src: https://www.varokas.com/secrets-in-code-with-mozilla-sops/
+Note: The `GPG_TTY` is necessary to have the password prompt appear. src: https://www.varokas.com/secrets-in-code-with-mozilla-sops/
+
+Note: `secrets.yaml` is just an example; the file can have any name
 
 ## Example
 
+The steps in the following example can be run locally in order to:
+* create a sample secrets file
+* encrypt the file
+* decrypt the file
+
+If these steps work, sops configured correctly - on your machine ;-) 
+
 ```bash
 #!/usr/bin/env bash
 set -ueo pipefail
@@ -30,10 +68,3 @@ sops -e -i secrets.yaml
 # decript, print to console
 sops -d secrets.yaml
 ```
-
-# Archive Expired Keys
-
-```bash
-mkdir archive
-mv ${keyname} "archive/${keyname}_$(date '+%Y-%m-%d').archive"
-```