Merge pull request 'feat: add stuffs' (#2) from feat/add-openpgp-workshop into master

Reviewed-on: #2

openpgp-workshop/index.md

@@ -85,7 +85,7 @@ What are some useful ways we can use OpenPGP:
 * `gpg --list-keys`
 * `echo "super secret text" > test.txt && cat test.txt`
 * `gpg --encrypt --recipient <email/ID> test.txt`
-* `gpg -er <email/ID> <filename> && cat test.txt.gpg`: notice it's a binary
+	* `gpg -er <email/ID> <filename> && cat test.txt.gpg`: notice it's a binary
 	    * You can use `--armor/-a` to encode it as ASCII so you can send the encrypted data as text
 * `gpg --armor -er <email/ID> test.txt && cat test.txt.asc`
 * `rm test.txt && ls`
@@ -111,6 +111,7 @@ What are some useful ways we can use OpenPGP:
 * Download:
     * Qubes-R*.iso
     * Cryptographic hash values
+    	* `gpg --verify --default-key <key> <filename>`
     * Detached PGP signature
     * Qubes release signing key
 
@@ -231,3 +232,9 @@ What are some useful ways we can use OpenPGP:
 * [openpgp-card](https://codeberg.org/openpgp-card)
     * [openpgp-card-tools](https://codeberg.org/openpgp-card/openpgp-card-tools)
     * [ssh-agent](https://codeberg.org/openpgp-card/ssh-agent)
+
+---
+
+# Cleanup
+
+* `gpg --delete-secret-and-public-keys <key_id>`