diff --git a/src/crypto/sha1-internal.c b/src/crypto/sha1-internal.c
index f6658e6..ffcba66 100644
--- a/src/crypto/sha1-internal.c
+++ b/src/crypto/sha1-internal.c
@@ -297,7 +297,6 @@
 			 255);
 	}
 	/* Wipe variables */
-	i = 0;
 	os_memset(context->buffer, 0, 64);
 	os_memset(context->state, 0, 20);
 	os_memset(context->count, 0, 8);
diff --git a/src/crypto/tls.h b/src/crypto/tls.h
index bca94d6..453b4de 100644
--- a/src/crypto/tls.h
+++ b/src/crypto/tls.h
@@ -96,6 +96,7 @@
 #define TLS_CONN_EAP_FAST BIT(7)
 #define TLS_CONN_DISABLE_TLSv1_0 BIT(8)
 #define TLS_CONN_EXT_CERT_CHECK BIT(9)
+#define TLS_CONN_REQUIRE_OCSP_ALL BIT(10)
 
 /**
  * struct tls_connection_params - Parameters for TLS connection
@@ -140,6 +141,9 @@
  * @flags: Parameter options (TLS_CONN_*)
  * @ocsp_stapling_response: DER encoded file with cached OCSP stapling response
  *	or %NULL if OCSP is not enabled
+ * @ocsp_stapling_response_multi: DER encoded file with cached OCSP stapling
+ *	response list (OCSPResponseList for ocsp_multi in RFC 6961) or %NULL if
+ *	ocsp_multi is not enabled
  *
  * TLS connection parameters to be configured with tls_connection_set_params()
  * and tls_global_set_params().
@@ -180,6 +184,7 @@
 
 	unsigned int flags;
 	const char *ocsp_stapling_response;
+	const char *ocsp_stapling_response_multi;
 };
 
 
diff --git a/src/crypto/tls_gnutls.c b/src/crypto/tls_gnutls.c
index b1bec4a..c4cd3c1 100644
--- a/src/crypto/tls_gnutls.c
+++ b/src/crypto/tls_gnutls.c
@@ -37,6 +37,8 @@
 			 union tls_event_data *data);
 	void *cb_ctx;
 	int cert_in_cb;
+
+	char *ocsp_stapling_response;
 };
 
 struct tls_connection {
@@ -133,6 +135,7 @@
 		if (global->params_set)
 			gnutls_certificate_free_credentials(global->xcred);
 		os_free(global->session_data);
+		os_free(global->ocsp_stapling_response);
 		os_free(global);
 	}
 
@@ -347,6 +350,12 @@
 	if (conn == NULL || params == NULL)
 		return -1;
 
+	if (params->flags & TLS_CONN_REQUIRE_OCSP_ALL) {
+		wpa_printf(MSG_INFO,
+			   "GnuTLS: ocsp=3 not supported");
+		return -1;
+	}
+
 	if (params->flags & TLS_CONN_EXT_CERT_CHECK) {
 		wpa_printf(MSG_INFO,
 			   "GnuTLS: tls_ext_cert_check=1 not supported");
@@ -602,6 +611,44 @@
 }
 
 
+#if GNUTLS_VERSION_NUMBER >= 0x030103
+static int server_ocsp_status_req(gnutls_session_t session, void *ptr,
+				  gnutls_datum_t *resp)
+{
+	struct tls_global *global = ptr;
+	char *cached;
+	size_t len;
+
+	if (!global->ocsp_stapling_response) {
+		wpa_printf(MSG_DEBUG, "GnuTLS: OCSP status callback - no response configured");
+		return GNUTLS_E_NO_CERTIFICATE_STATUS;
+	}
+
+	cached = os_readfile(global->ocsp_stapling_response, &len);
+	if (!cached) {
+		wpa_printf(MSG_DEBUG,
+			   "GnuTLS: OCSP status callback - could not read response file (%s)",
+			   global->ocsp_stapling_response);
+		return GNUTLS_E_NO_CERTIFICATE_STATUS;
+	}
+
+	wpa_printf(MSG_DEBUG,
+		   "GnuTLS: OCSP status callback - send cached response");
+	resp->data = gnutls_malloc(len);
+	if (!resp->data) {
+		os_free(resp);
+		return GNUTLS_E_MEMORY_ERROR;
+	}
+
+	os_memcpy(resp->data, cached, len);
+	resp->size = len;
+	os_free(cached);
+
+	return GNUTLS_E_SUCCESS;
+}
+#endif /* 3.1.3 */
+
+
 int tls_global_set_params(void *tls_ctx,
 			  const struct tls_connection_params *params)
 {
@@ -696,6 +743,17 @@
 		}
 	}
 
+#if GNUTLS_VERSION_NUMBER >= 0x030103
+	os_free(global->ocsp_stapling_response);
+	if (params->ocsp_stapling_response)
+		global->ocsp_stapling_response =
+			os_strdup(params->ocsp_stapling_response);
+	else
+		global->ocsp_stapling_response = NULL;
+	gnutls_certificate_set_ocsp_status_request_function(
+		global->xcred, server_ocsp_status_req, global);
+#endif /* 3.1.3 */
+
 	global->params_set = 1;
 
 	return 0;
diff --git a/src/crypto/tls_internal.c b/src/crypto/tls_internal.c
index 8b90d56..01a7c97 100644
--- a/src/crypto/tls_internal.c
+++ b/src/crypto/tls_internal.c
@@ -331,6 +331,13 @@
 		return -1;
 	}
 
+	if (params->ocsp_stapling_response)
+		cred->ocsp_stapling_response =
+			os_strdup(params->ocsp_stapling_response);
+	if (params->ocsp_stapling_response_multi)
+		cred->ocsp_stapling_response_multi =
+			os_strdup(params->ocsp_stapling_response_multi);
+
 	return 0;
 #else /* CONFIG_TLS_INTERNAL_SERVER */
 	return -1;
diff --git a/src/crypto/tls_openssl.c b/src/crypto/tls_openssl.c
index 1d75ba7..62277c4 100644
--- a/src/crypto/tls_openssl.c
+++ b/src/crypto/tls_openssl.c
@@ -3890,6 +3890,12 @@
 	if (conn == NULL)
 		return -1;
 
+	if (params->flags & TLS_CONN_REQUIRE_OCSP_ALL) {
+		wpa_printf(MSG_INFO,
+			   "OpenSSL: ocsp=3 not supported");
+		return -1;
+	}
+
 	/*
 	 * If the engine isn't explicitly configured, and any of the
 	 * cert/key fields are actually PKCS#11 URIs, then automatically