test: create a self-signed certificate for testing

1 files changed, 13 insertions, 0 deletions

diff --git a/mktestcert b/mktestcert
new file mode 100755
index 0000000..bb092d7
--- /dev/null
+++ b/mktestcert
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -eu
+
+key="$1"
+cert="$2"
+csr="$(mktemp)"
+
+openssl genrsa -out "$key" 2048
+openssl rsa -in "$key" -out "$key"
+openssl req -sha256 -new -key "$key" -out "$csr" -subj '/CN=localhost'
+openssl x509 -req -sha256 -days 365 -in "$csr" -signkey "$key" -out "$cert"
+rm -f "$csr"