Add Redis test TLS certificate generation script

Author: ddworak

redis/tls/gen-test-certs.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+# based on https://github.com/redis/redis/blob/unstable/utils/gen-test-certs.sh
+# Generate some test certificates which are used by the regression test suite:
+#
+#   ca.{crt,key}          Self signed CA certificate.
+#   redis.{crt,key}       A certificate with no key usage/policy restrictions.
+
+generate_cert() {
+    local name=$1
+    local cn="$2"
+    local opts="$3"
+
+    local keyfile=${name}.key
+    local certfile=${name}.crt
+
+    [ -f $keyfile ] || openssl genrsa -out $keyfile 2048
+    openssl req \
+        -new -sha256 \
+        -subj "/O=Redis Test/CN=$cn" \
+        -key $keyfile | \
+        openssl x509 \
+            -req -sha256 \
+            -CA ca.crt \
+            -CAkey ca.key \
+            -CAserial ca.txt \
+            -CAcreateserial \
+            -days 365 \
+            $opts \
+            -out $certfile
+}
+
+[ -f ca.key ] || openssl genrsa -out ca.key 4096
+openssl req \
+    -x509 -new -nodes -sha256 \
+    -key ca.key \
+    -days 3650 \
+    -subj '/O=Redis Test/CN=Certificate Authority' \
+    -out ca.crt
+
+generate_cert redis "Generic-cert"
+
+openssl pkcs12 -export -in redis.crt -inkey redis.key -out redis.p12 -passout pass: