Fix install docs and deploy keys script

secrets/ssh-keys/deploy_keys.sh

@@ -11,7 +11,15 @@ fi
 read -p "Username: " USERNAME
 
 PRIVATE_KEY="id_$HOSTNAME"
+ENCRYPTED_PRIVATE_KEY="$PRIVATE_KEY.gpg"
 PUBLIC_KEY="id_$HOSTNAME.pub"
+DECRYPTED=f
+
+if [ ! -f $PRIVATE_KEY ]; then
+    DECRYPTED=t
+    echo "Decrypting private key ..."
+    gpg -d $ENCRYPTED_PRIVATE_KEY > $PRIVATE_KEY
+fi
 
 echo "Deploying private key ($PRIVATE_KEY) to ($USERNAME@$HOSTIP) ..."
 scp $PRIVATE_KEY $USERNAME@$HOSTIP:.ssh/$PRIVATE_KEY
@@ -19,4 +27,9 @@ scp $PRIVATE_KEY $USERNAME@$HOSTIP:.ssh/$PRIVATE_KEY
 echo "Deploying public key ($PUBLIC_KEY) to ($USERNAME@$HOSTIP) ..."
 scp $PUBLIC_KEY $USERNAME@$HOSTIP:.ssh/$PUBLIC_KEY
 
+if [ "$DECRYPTED" = 't' ]; then
+    echo "Deleting decrypted private key ..."
+    rm $PRIVATE_KEY
+fi
+
 echo "Done"