stubbing out new article on ed25519 keys

docs/ed25519.md

@@ -0,0 +1,32 @@
+# Stronger SSH Keys
+
+Have a look in your `~/.ssh` folder and browse through your keys. How many are
+using a recent encryption method or a long bit-length? RSA keys are far and
+away the most popular, and if you're using it with a bit-length that's 2048 or
+lower, you may be in danger.
+
+Let's review the common options:
+
+- DSA: No longer supported and unsafe.
+
+- RSA: Key bit lengths greater than 3072 are still safe, but get lengthy. 1024
+keys are officially "unsafe". The clock is ticking on RSA of any key length as
+it has no protection from quantum computing.
+
+ECDSA: The cryptographic safety of these keys depend on your specific hardware,
+and older/weaker machines may have insufficient entropy. The mathematics in use
+are not completely trusted by the security community.
+
+Ed25519: An EdDSA implementation using the [Twisted Edwards
+curve](https://en.wikipedia.org/wiki/Twisted_Edwards_curve)! These keys are
+strong, have protection from quantum techniques, and generate a tiny public key
+that's only 68 characters long. They can be generated quickly en mass.
+
+Ed25519 is the best recommendation in 2019.
+
+## Generate an ed25519 key
+
+    ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_ed25519
+
+
+_[In progress]_

mkdocs.yml

@@ -8,6 +8,8 @@ pages:
     - 'Sign Up': 'sign-up.md'
     - 'SSH over tor': 'ssh-over-tor.md'
     - 'Tilde Net News': 'net-news.md'
+  - Security:
+    - 'Stronger SSH Keys': 'ed25519.md'
 theme:
   name: material
   palette: