message: Add 256bit cipher to TLS 1.2
diff: @@ -47,8 +47,14 @@ namespace tls
  SSL_OP_NO_RENEGOTIATION);
  // Set cipher for TLS 1.2 (TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256)
  - SSL_CTX_set_cipher_list(cfg, "ECDHE-ECDSA-AES128-GCM-SHA256");
  - SSL_set_cipher_list(ssl, "ECDHE-ECDSA-AES128-GCM-SHA256");
  + SSL_CTX_set_cipher_list(
  + cfg,
  + "ECDHE-ECDSA-AES256-GCM-SHA384:"
  + "ECDHE-ECDSA-AES128-GCM-SHA256");
  + SSL_set_cipher_list(
  + ssl,
  + "ECDHE-ECDSA-AES256-GCM-SHA384:"
  + "ECDHE-ECDSA-AES128-GCM-SHA256");
  // Set cipher for TLS 1.3 (same as above)
  SSL_CTX_set_ciphersuites(
  