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diff --git a/comm/third_party/libotr/src/context_priv.h b/comm/third_party/libotr/src/context_priv.h
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+/*
+ *  Off-the-Record Messaging library
+ *  Copyright (C) 2004-2012  Ian Goldberg, Chris Alexander, Willy Lew,
+ *			     Lisa Du, Nikita Borisov
+ *                           <otr@cypherpunks.ca>
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of version 2.1 of the GNU Lesser General
+ *  Public License as published by the Free Software Foundation.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __CONTEXT_PRIV_H__
+#define __CONTEXT_PRIV_H__
+
+#include <gcrypt.h>
+
+#include "dh.h"
+#include "auth.h"
+#include "sm.h"
+
+typedef struct context_priv {
+	/* The part of the fragmented message we've seen so far */
+	char *fragment;
+
+	/* The length of fragment */
+	size_t fragment_len;
+
+	/* The total number of fragments in this message */
+	unsigned short fragment_n;
+
+	/* The highest fragment number we've seen so far for this message */
+	unsigned short fragment_k;
+
+	/* current keyid used by other side; this is set to 0 if we get
+	 * a OTRL_TLV_DISCONNECTED message from them. */
+	unsigned int their_keyid;
+
+	/* Y[their_keyid] (their DH pubkey) */
+	gcry_mpi_t their_y;
+
+	/* Y[their_keyid-1] (their prev DH pubkey) */
+	gcry_mpi_t their_old_y;
+
+	/* current keyid used by us */
+	unsigned int our_keyid;
+
+	/* DH key[our_keyid] */
+	DH_keypair our_dh_key;
+
+	/* DH key[our_keyid-1] */
+	DH_keypair our_old_dh_key;
+
+	/* sesskeys[i][j] are the session keys derived from DH
+	 * key[our_keyid-i] and mpi Y[their_keyid-j] */
+	DH_sesskeys sesskeys[2][2];
+
+	/* saved mac keys to be revealed later */
+	unsigned int numsavedkeys;
+	unsigned char *saved_mac_keys;
+
+	/* generation number: increment every time we go private, and never
+	 * reset to 0 (unless we remove the context entirely) */
+	unsigned int generation;
+
+	/* The last time a Data Message was sent */
+	time_t lastsent;
+
+	/* The last time a Data Message was received */
+	time_t lastrecv;
+
+	/* The plaintext of the last Data Message sent */
+	char *lastmessage;
+
+	/* Is the last message eligible for retransmission? */
+	int may_retransmit;
+
+} ConnContextPriv;
+
+/* Create a new private connection context. */
+ConnContextPriv *otrl_context_priv_new();
+
+/* Frees up memory that was used in otrl_context_priv_new */
+void otrl_context_priv_force_finished(ConnContextPriv *context_priv);
+
+#endif