added MirOTR

git-svn-id: http://svn.miranda-ng.org/main/trunk@83 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

1 files changed, 157 insertions, 0 deletions

diff --git a/plugins/MirOTR/libotr-3.2.0/src/auth.h b/plugins/MirOTR/libotr-3.2.0/src/auth.h
new file mode 100644
index 0000000000..ac9c668d94
--- /dev/null
+++ b/plugins/MirOTR/libotr-3.2.0/src/auth.h
@@ -0,0 +1,157 @@
+/*
+ *  Off-the-Record Messaging library
+ *  Copyright (C) 2004-2008  Ian Goldberg, Chris Alexander, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __AUTH_H__
+#define __AUTH_H__
+
+#include <gcrypt.h>
+#include "dh.h"
+
+typedef enum {
+	OTRL_AUTHSTATE_NONE,
+	OTRL_AUTHSTATE_AWAITING_DHKEY,
+	OTRL_AUTHSTATE_AWAITING_REVEALSIG,
+	OTRL_AUTHSTATE_AWAITING_SIG,
+	OTRL_AUTHSTATE_V1_SETUP
+} OtrlAuthState;
+
+typedef struct {
+	OtrlAuthState authstate;              /* Our state */
+
+	DH_keypair our_dh;                    /* Our D-H key */
+	unsigned int our_keyid;               /* ...and its keyid */
+
+	unsigned char *encgx;                 /* The encrypted value of g^x */
+	size_t encgx_len;                     /*  ...and its length */
+	unsigned char r[16];                  /* The encryption key */
+
+	unsigned char hashgx[32];             /* SHA256(g^x) */
+
+	gcry_mpi_t their_pub;                 /* Their D-H public key */
+	unsigned int their_keyid;             /*  ...and its keyid */
+
+	gcry_cipher_hd_t enc_c, enc_cp;       /* c and c' encryption keys */
+	gcry_md_hd_t mac_m1, mac_m1p;         /* m1 and m1' MAC keys */
+	gcry_md_hd_t mac_m2, mac_m2p;         /* m2 and m2' MAC keys */
+
+	unsigned char their_fingerprint[20];  /* The fingerprint of their
+						 long-term signing key */
+
+	int initiated;                        /* Did we initiate this
+						 authentication? */
+
+	unsigned int protocol_version;        /* The protocol version number
+						 used to authenticate. */
+
+	unsigned char secure_session_id[20];  /* The secure session id */
+	size_t secure_session_id_len;         /* And its actual length,
+						 which may be either 20 (for
+						 v1) or 8 (for v2) */
+	OtrlSessionIdHalf session_id_half;    /* Which half of the session
+						 id gets shown in bold */
+
+	char *lastauthmsg;                    /* The last auth message
+						 (base-64 encoded) we sent,
+						 in case we need to
+						 retransmit it. */
+} OtrlAuthInfo;
+
+#include "privkey-t.h"
+
+/*
+ * Initialize the fields of an OtrlAuthInfo (already allocated).
+ */
+void otrl_auth_new(OtrlAuthInfo *auth);
+
+/*
+ * Clear the fields of an OtrlAuthInfo (but leave it allocated).
+ */
+void otrl_auth_clear(OtrlAuthInfo *auth);
+
+/*
+ * Start a fresh AKE (version 2) using the given OtrlAuthInfo.  Generate
+ * a fresh DH keypair to use.  If no error is returned, the message to
+ * transmit will be contained in auth->lastauthmsg.
+ */
+gcry_error_t otrl_auth_start_v2(OtrlAuthInfo *auth);
+
+/*
+ * Handle an incoming D-H Commit Message.  If no error is returned, the
+ * message to send will be left in auth->lastauthmsg.  Generate a fresh
+ * keypair to use.
+ */
+gcry_error_t otrl_auth_handle_commit(OtrlAuthInfo *auth,
+	const char *commitmsg);
+
+/*
+ * Handle an incoming D-H Key Message.  If no error is returned, and
+ * *havemsgp is 1, the message to sent will be left in auth->lastauthmsg.
+ * Use the given private authentication key to sign messages.
+ */
+gcry_error_t otrl_auth_handle_key(OtrlAuthInfo *auth, const char *keymsg,
+	int *havemsgp, OtrlPrivKey *privkey);
+
+/*
+ * Handle an incoming Reveal Signature Message.  If no error is
+ * returned, and *havemsgp is 1, the message to be sent will be left in
+ * auth->lastauthmsg.  Use the given private authentication key to sign
+ * messages.  Call the auth_succeeded callback if authentication is
+ * successful.
+ */
+gcry_error_t otrl_auth_handle_revealsig(OtrlAuthInfo *auth,
+	const char *revealmsg, int *havemsgp, OtrlPrivKey *privkey,
+	gcry_error_t (*auth_succeeded)(const OtrlAuthInfo *auth, void *asdata),
+	void *asdata);
+
+/*
+ * Handle an incoming Signature Message.  If no error is returned, and
+ * *havemsgp is 1, the message to be sent will be left in
+ * auth->lastauthmsg.  Call the auth_succeeded callback if
+ * authentication is successful.
+ */
+gcry_error_t otrl_auth_handle_signature(OtrlAuthInfo *auth,
+	const char *sigmsg, int *havemsgp,
+	gcry_error_t (*auth_succeeded)(const OtrlAuthInfo *auth, void *asdata),
+	void *asdata);
+
+/*
+ * Start a fresh AKE (version 1) using the given OtrlAuthInfo.  If
+ * our_dh is NULL, generate a fresh DH keypair to use.  Otherwise, use a
+ * copy of the one passed (with the given keyid).  Use the given private
+ * key to sign the message.  If no error is returned, the message to
+ * transmit will be contained in auth->lastauthmsg.
+ */
+gcry_error_t otrl_auth_start_v1(OtrlAuthInfo *auth, DH_keypair *our_dh,
+	unsigned int our_keyid, OtrlPrivKey *privkey);
+
+/*
+ * Handle an incoming v1 Key Exchange Message.  If no error is returned,
+ * and *havemsgp is 1, the message to be sent will be left in
+ * auth->lastauthmsg.  Use the given private authentication key to sign
+ * messages.  Call the auth_secceeded callback if authentication is
+ * successful.  If non-NULL, use a copy of the given D-H keypair, with
+ * the given keyid.
+ */
+gcry_error_t otrl_auth_handle_v1_key_exchange(OtrlAuthInfo *auth,
+	const char *keyexchmsg, int *havemsgp, OtrlPrivKey *privkey,
+	DH_keypair *our_dh, unsigned int our_keyid,
+	gcry_error_t (*auth_succeeded)(const OtrlAuthInfo *auth, void *asdata),
+	void *asdata);
+
+#endif