--- ./openssl.c	2021-12-09 10:02:45.000000000 -0500
+++ ./openssl.c	2021-12-09 10:23:48.000000000 -0500
@@ -1484,8 +1484,11 @@
 {
    int ret = 0;
    char* key_file_path;
+#ifndef USE_EVP_PKEY_EC
    BIGNUM *exp;
    RSA *rsa;
+#else  /* #ifndef USE_EVP_PKEY_EC */
+#endif
    EVP_PKEY *key;
 
    key_file_path = make_certs_path(csp->config->certificate_directory,
@@ -1504,6 +1507,7 @@
       return 0;
    }
 
+#ifndef USE_EVP_PKEY_EC
    exp = BN_new();
    rsa = RSA_new();
    key = EVP_PKEY_new();
@@ -1536,7 +1540,18 @@
       ret = -1;
       goto exit;
    }
-
+#else  /* #ifndef USE_EVP_PKEY_EC */
+   /*
+    * https://www.openssl.org/docs/manmaster/man7/EVP_PKEY-EC.html
+    */
+   key = EVP_EC_gen(EC_GROUP_NAME);
+   if (key == NULL)
+   {
+      log_ssl_errors(LOG_LEVEL_ERROR, "EC key generation error");
+      ret = -1;
+      goto exit;
+   }
+#endif
    /*
     * Exporting private key into file
     */
@@ -1552,6 +1567,7 @@
    /*
     * Freeing used variables
     */
+#ifndef USE_EVP_PKEY_EC
    if (exp)
    {
       BN_free(exp);
@@ -1560,6 +1576,8 @@
    {
       RSA_free(rsa);
    }
+#else  /* #ifndef USE_EVP_PKEY_EC */
+#endif
    if (key)
    {
       EVP_PKEY_free(key);