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diff --git a/libfreerdp/core/nla.h b/libfreerdp/core/nla.h
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+++ b/libfreerdp/core/nla.h
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+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Network Level Authentication (NLA)
+ *
+ * Copyright 2010-2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FREERDP_LIB_CORE_NLA_H
+#define FREERDP_LIB_CORE_NLA_H
+
+typedef struct rdp_nla rdpNla;
+
+#include <freerdp/api.h>
+#include <freerdp/freerdp.h>
+
+#include <winpr/sspi.h>
+#include <winpr/stream.h>
+#include <winpr/crypto.h>
+
+#include <freerdp/crypto/ber.h>
+#include <freerdp/crypto/der.h>
+#include <freerdp/crypto/crypto.h>
+
+#include "transport.h"
+
+typedef enum
+{
+	NLA_STATE_INITIAL,
+	NLA_STATE_NEGO_TOKEN,
+	NLA_STATE_PUB_KEY_AUTH,
+	NLA_STATE_EARLY_USER_AUTH,
+	NLA_STATE_AUTH_INFO,
+	NLA_STATE_POST_NEGO,
+	NLA_STATE_FINAL
+} NLA_STATE;
+
+FREERDP_LOCAL int nla_authenticate(rdpNla* nla);
+
+FREERDP_LOCAL int nla_client_begin(rdpNla* nla);
+FREERDP_LOCAL int nla_recv_pdu(rdpNla* nla, wStream* s);
+
+FREERDP_LOCAL SEC_WINNT_AUTH_IDENTITY* nla_get_identity(rdpNla* nla);
+
+FREERDP_LOCAL NLA_STATE nla_get_state(rdpNla* nla);
+FREERDP_LOCAL BOOL nla_set_state(rdpNla* nla, NLA_STATE state);
+FREERDP_LOCAL const char* nla_get_state_str(NLA_STATE state);
+
+FREERDP_LOCAL DWORD nla_get_error(rdpNla* nla);
+FREERDP_LOCAL UINT32 nla_get_sspi_error(rdpNla* nla);
+
+FREERDP_LOCAL BOOL nla_set_service_principal(rdpNla* nla, const char* service,
+                                             const char* hostname);
+
+FREERDP_LOCAL BOOL nla_set_sspi_module(rdpNla* nla, const char* sspiModule);
+FREERDP_LOCAL BOOL nla_sspi_module_init(rdpNla* nla);
+
+FREERDP_LOCAL BOOL nla_impersonate(rdpNla* nla);
+FREERDP_LOCAL BOOL nla_revert_to_self(rdpNla* nla);
+
+FREERDP_LOCAL void nla_free(rdpNla* nla);
+
+WINPR_ATTR_MALLOC(nla_free, 1)
+FREERDP_LOCAL rdpNla* nla_new(rdpContext* context, rdpTransport* transport);
+
+FREERDP_LOCAL void nla_set_early_user_auth(rdpNla* nla, BOOL earlyUserAuth);
+
+#endif /* FREERDP_LIB_CORE_NLA_H */