/*

 * Key server protocol definition

 * Copyright (c) 2010, Oracle America, Inc.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 *       copyright notice, this list of conditions and the following

 *       disclaimer in the documentation and/or other materials

 *       provided with the distribution.

 *     * Neither the name of the "Oracle America, Inc." nor the names of its

 *       contributors may be used to endorse or promote products derived

 *       from this software without specific prior written permission.

 *

 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 * The keyserver is a public key storage/encryption/decryption service

 * The encryption method used is based on the Diffie-Hellman exponential

 * key exchange technology.

 *

 * The key server is local to each machine, akin to the portmapper.

 * Under TI-RPC, communication with the keyserver is through the

 * loopback transport.

 *

 * NOTE: This .x file generates the USER level headers for the keyserver.

 * the KERNEL level headers are created by hand as they kernel has special

 * requirements.

 */

%#if 0

%#pragma ident	"@(#)key_prot.x	1.7	94/04/29 SMI"

%#endif

%

%/* Copyright (c)  1990, 1991 Sun Microsystems, Inc. */

%

%/*

% * Compiled from key_prot.x using rpcgen.

% * DO NOT EDIT THIS FILE!

% * This is NOT source code!

% */

/*

 * PROOT and MODULUS define the way the Diffie-Hellman key is generated.

 *

 * MODULUS should be chosen as a prime of the form: MODULUS == 2*p + 1,

 * where p is also prime.

 *

 * PROOT satisfies the following two conditions:

 * (1) (PROOT ** 2) % MODULUS != 1

 * (2) (PROOT ** p) % MODULUS != 1

 *

 */

const PROOT = 3;

const HEXMODULUS = "d4a0ba0250b6fd2ec626e7efd637df76c716e22d0944b88b";

const HEXKEYBYTES = 48;		/* HEXKEYBYTES == strlen(HEXMODULUS) */

const KEYSIZE = 192;		/* KEYSIZE == bit length of key */

const KEYBYTES = 24;		/* byte length of key */

/*

 * The first 16 hex digits of the encrypted secret key are used as

 * a checksum in the database.

 */

const KEYCHECKSUMSIZE = 16;

/*

 * status of operation

 */

enum keystatus {

	KEY_SUCCESS,	/* no problems */

	KEY_NOSECRET,	/* no secret key stored */

	KEY_UNKNOWN,	/* unknown netname */

	KEY_SYSTEMERR 	/* system error (out of memory, encryption failure) */

};

typedef opaque keybuf[HEXKEYBYTES];	/* store key in hex */

typedef string netnamestr<MAXNETNAMELEN>;

/*

 * Argument to ENCRYPT or DECRYPT

 */

struct cryptkeyarg {

	netnamestr remotename;

	des_block deskey;

};

/*

 * Argument to ENCRYPT_PK or DECRYPT_PK

 */

struct cryptkeyarg2 {

	netnamestr remotename;

	netobj	remotekey;	/* Contains a length up to 1024 bytes */

	des_block deskey;

};

/*

 * Result of ENCRYPT, DECRYPT, ENCRYPT_PK, and DECRYPT_PK

 */

union cryptkeyres switch (keystatus status) {

case KEY_SUCCESS:

	des_block deskey;

default:

	void;

};

const MAXGIDS  = 16;	/* max number of gids in gid list */

/*

 * Unix credential

 */

struct unixcred {

	u_int uid;

	u_int gid;

	u_int gids<MAXGIDS>;

};

/*

 * Result returned from GETCRED

 */

union getcredres switch (keystatus status) {

case KEY_SUCCESS:

	unixcred cred;

default:

	void;

};

/*

 * key_netstarg;

 */

struct key_netstarg {

	keybuf st_priv_key;

	keybuf st_pub_key;

	netnamestr st_netname;

};

union key_netstres switch (keystatus status){

case KEY_SUCCESS:

	key_netstarg knet;

default:

	void;

};

#ifdef RPC_HDR

%

%#ifndef opaque

%#define opaque char

%#endif

%

#endif

program KEY_PROG {

	version KEY_VERS {

		/*

		 * This is my secret key.

	 	 * Store it for me.

		 */

		keystatus

		KEY_SET(keybuf) = 1;

		/*

		 * I want to talk to X.

		 * Encrypt a conversation key for me.

	 	 */

		cryptkeyres

		KEY_ENCRYPT(cryptkeyarg) = 2;

		/*

		 * X just sent me a message.

		 * Decrypt the conversation key for me.

		 */

		cryptkeyres

		KEY_DECRYPT(cryptkeyarg) = 3;

		/*

		 * Generate a secure conversation key for me

		 */

		des_block

		KEY_GEN(void) = 4;

		/*

		 * Get me the uid, gid and group-access-list associated

		 * with this netname (for kernel which cannot use NIS)

		 */

		getcredres

		KEY_GETCRED(netnamestr) = 5;

	} = 1;

	version KEY_VERS2 {

		/*

		 * #######

		 * Procedures 1-5 are identical to version 1

		 * #######

		 */

		/*

		 * This is my secret key.

	 	 * Store it for me.

		 */

		keystatus

		KEY_SET(keybuf) = 1;

		/*

		 * I want to talk to X.

		 * Encrypt a conversation key for me.

	 	 */

		cryptkeyres

		KEY_ENCRYPT(cryptkeyarg) = 2;

		/*

		 * X just sent me a message.

		 * Decrypt the conversation key for me.

		 */

		cryptkeyres

		KEY_DECRYPT(cryptkeyarg) = 3;

		/*

		 * Generate a secure conversation key for me

		 */

		des_block

		KEY_GEN(void) = 4;

		/*

		 * Get me the uid, gid and group-access-list associated

		 * with this netname (for kernel which cannot use NIS)

		 */

		getcredres

		KEY_GETCRED(netnamestr) = 5;

		/*

		 * I want to talk to X. and I know X's public key

		 * Encrypt a conversation key for me.

	 	 */

		cryptkeyres

		KEY_ENCRYPT_PK(cryptkeyarg2) = 6;

		/*

		 * X just sent me a message. and I know X's public key

		 * Decrypt the conversation key for me.

		 */

		cryptkeyres

		KEY_DECRYPT_PK(cryptkeyarg2) = 7;

		/*

		 * Store my public key, netname and private key.

		 */

		keystatus

		KEY_NET_PUT(key_netstarg) = 8;

		/*

		 * Retrieve my public key, netname and private key.

		 */

 		key_netstres

		KEY_NET_GET(void) = 9;

		/*

		 * Return me the conversation key that is constructed

		 * from my secret key and this publickey.

		 */

		cryptkeyres

		KEY_GET_CONV(keybuf) = 10;

	} = 2;

} = 100029;