diff --git a/openssl_cert_make_cmd.txt b/openssl_cert_make_cmd.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ab3ade220a10cf887f40b5782609ecae652f5845
--- /dev/null
+++ b/openssl_cert_make_cmd.txt
@@ -0,0 +1,7 @@
+openssl genrsa -des3 -out ca_privkey.pem 4096
+openssl req -new -x509 -key ca_privkey.pem -out ca_cert.pem -days 16384
+
+openssl genrsa -out svr_privkey.pem 4096
+openssl req -new -key svr_privkey.pem -out svr_cert.csr
+
+openssl ca -keyfile ca_privkey.pem -outdir . -in svr_cert.csr -out svr_cert.pem -cert ca_cert.pem -days 7200
\ No newline at end of file