diff --git a/customscripts/hash_cred_check.sh b/customscripts/hash_cred_check.sh
new file mode 100644
index 0000000..00f63ef
--- /dev/null
+++ b/customscripts/hash_cred_check.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+set -e # we do noot tolerate failure here
+
+# aint got no time for no bs
+if [ -z "$1" ]; then
+    echo -e "ERROR\nUsage: hash_cred_check.sh <email or phone number>"
+    exit 1 # fail with error
+fi 
+
+# 256 bits of random shit, encoded as base64
+salt="$(openssl rand -base64 32)"
+
+# set credential
+credential="$1"
+
+# output hex bytes after doi one hell of a argon2id fuckery
+hash=$(echo -n "$credential" | argon2 "$(base64 -d <<< $salt)" -id -t 8 -m 19 -p 2 -r)
+
+echo "$hash"
+echo "$salt"
\ No newline at end of file