From 124a293a33c3d20152cd77bd15b9682d04e0bafc Mon Sep 17 00:00:00 2001
From: Peter Cai <peter@typeblog.net>
Date: Mon, 10 Oct 2022 16:18:30 -0400
Subject: [PATCH] Only allow alphanumeric passphrases for now

We would need to sanitize the input for perl, or find a better way to do
hmac_sha256 here.
---
 gocrypt.bash | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gocrypt.bash b/gocrypt.bash
index f0cacfa..d33c97c 100755
--- a/gocrypt.bash
+++ b/gocrypt.bash
@@ -67,6 +67,7 @@ gocrypt_init() {
     if $needs_passphrase; then
         echo -n "Enter passphrase: "
         read -s passphrase
+        [[ "$passphrase" =~ [^a-zA-Z0-9\ ] ]] && gocrypt_die "Only alphanumeric characters are allowed for now"
         local passphrase_confirm=""
         echo
         echo -n "Confirm passphrase: "