diff --git a/local/bin/twpcalc.sh b/local/bin/twpcalc.sh
new file mode 100755
index 0000000..a44d2c1
--- /dev/null
+++ b/local/bin/twpcalc.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# Reading input {{{
+
+# Terminal
+read -p "Alias: " alias_
+read -s -p "Secret: " secret
+
+echo -n "$secret$alias_" | shasum | xxd -r -p | base64 | colrm 17
+