/* ssl/ssl2.h */

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 * 

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 * 

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 * 

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

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the copyright

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

 * 2. 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.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from 

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 * 

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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 licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

#ifndef HEADER_SSL2_H 

#define HEADER_SSL2_H 

#ifdef  __cplusplus

extern "C" {

#endif

/* Protocol Version Codes */

#define SSL2_VERSION		0x0002

#define SSL2_VERSION_MAJOR	0x00

#define SSL2_VERSION_MINOR	0x02

/* #define SSL2_CLIENT_VERSION	0x0002 */

/* #define SSL2_SERVER_VERSION	0x0002 */

/* Protocol Message Codes */

#define SSL2_MT_ERROR			0

#define SSL2_MT_CLIENT_HELLO		1

#define SSL2_MT_CLIENT_MASTER_KEY	2

#define SSL2_MT_CLIENT_FINISHED		3

#define SSL2_MT_SERVER_HELLO		4

#define SSL2_MT_SERVER_VERIFY		5

#define SSL2_MT_SERVER_FINISHED		6

#define SSL2_MT_REQUEST_CERTIFICATE	7

#define SSL2_MT_CLIENT_CERTIFICATE	8

/* Error Message Codes */

#define SSL2_PE_UNDEFINED_ERROR		0x0000

#define SSL2_PE_NO_CIPHER		0x0001

#define SSL2_PE_NO_CERTIFICATE		0x0002

#define SSL2_PE_BAD_CERTIFICATE		0x0004

#define SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE 0x0006

/* Cipher Kind Values */

#define SSL2_CK_NULL_WITH_MD5			0x02000000 /* v3 */

#define SSL2_CK_RC4_128_WITH_MD5		0x02010080

#define SSL2_CK_RC4_128_EXPORT40_WITH_MD5	0x02020080

#define SSL2_CK_RC2_128_CBC_WITH_MD5		0x02030080

#define SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5	0x02040080

#define SSL2_CK_IDEA_128_CBC_WITH_MD5		0x02050080

#define SSL2_CK_DES_64_CBC_WITH_MD5		0x02060040

#define SSL2_CK_DES_64_CBC_WITH_SHA		0x02060140 /* v3 */

#define SSL2_CK_DES_192_EDE3_CBC_WITH_MD5	0x020700c0

#define SSL2_CK_DES_192_EDE3_CBC_WITH_SHA	0x020701c0 /* v3 */

#define SSL2_CK_RC4_64_WITH_MD5			0x02080080 /* MS hack */

#define SSL2_CK_DES_64_CFB64_WITH_MD5_1		0x02ff0800 /* SSLeay */

#define SSL2_CK_NULL				0x02ff0810 /* SSLeay */

#define SSL2_TXT_DES_64_CFB64_WITH_MD5_1	"DES-CFB-M1"

#define SSL2_TXT_NULL_WITH_MD5			"NULL-MD5"

#define SSL2_TXT_RC4_128_WITH_MD5		"RC4-MD5"

#define SSL2_TXT_RC4_128_EXPORT40_WITH_MD5	"EXP-RC4-MD5"

#define SSL2_TXT_RC2_128_CBC_WITH_MD5		"RC2-CBC-MD5"

#define SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5	"EXP-RC2-CBC-MD5"

#define SSL2_TXT_IDEA_128_CBC_WITH_MD5		"IDEA-CBC-MD5"

#define SSL2_TXT_DES_64_CBC_WITH_MD5		"DES-CBC-MD5"

#define SSL2_TXT_DES_64_CBC_WITH_SHA		"DES-CBC-SHA"

#define SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5	"DES-CBC3-MD5"

#define SSL2_TXT_DES_192_EDE3_CBC_WITH_SHA	"DES-CBC3-SHA"

#define SSL2_TXT_RC4_64_WITH_MD5		"RC4-64-MD5"

#define SSL2_TXT_NULL				"NULL"

/* Flags for the SSL_CIPHER.algorithm2 field */

#define SSL2_CF_5_BYTE_ENC			0x01

#define SSL2_CF_8_BYTE_ENC			0x02

/* Certificate Type Codes */

#define SSL2_CT_X509_CERTIFICATE		0x01

/* Authentication Type Code */

#define SSL2_AT_MD5_WITH_RSA_ENCRYPTION		0x01

#define SSL2_MAX_SSL_SESSION_ID_LENGTH		32

/* Upper/Lower Bounds */

#define SSL2_MAX_MASTER_KEY_LENGTH_IN_BITS	256

#ifdef OPENSSL_SYS_MPE

#define SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER	29998u

#else

#define SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER	32767u  /* 2^15-1 */

#endif

#define SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER	16383 /* 2^14-1 */

#define SSL2_CHALLENGE_LENGTH	16

/*#define SSL2_CHALLENGE_LENGTH	32 */

#define SSL2_MIN_CHALLENGE_LENGTH	16

#define SSL2_MAX_CHALLENGE_LENGTH	32

#define SSL2_CONNECTION_ID_LENGTH	16

#define SSL2_MAX_CONNECTION_ID_LENGTH	16

#define SSL2_SSL_SESSION_ID_LENGTH	16

#define SSL2_MAX_CERT_CHALLENGE_LENGTH	32

#define SSL2_MIN_CERT_CHALLENGE_LENGTH	16

#define SSL2_MAX_KEY_MATERIAL_LENGTH	24

#ifndef HEADER_SSL_LOCL_H

#define  CERT		char

#endif

typedef struct ssl2_state_st

	{

	int three_byte_header;

	int clear_text;		/* clear text */

	int escape;		/* not used in SSLv2 */

	int ssl2_rollback;	/* used if SSLv23 rolled back to SSLv2 */

	/* non-blocking io info, used to make sure the same

	 * args were passwd */

	unsigned int wnum;	/* number of bytes sent so far */

	int wpend_tot;

	const unsigned char *wpend_buf;

	int wpend_off;	/* offset to data to write */

	int wpend_len; 	/* number of bytes passwd to write */

	int wpend_ret; 	/* number of bytes to return to caller */

	/* buffer raw data */

	int rbuf_left;

	int rbuf_offs;

	unsigned char *rbuf;

	unsigned char *wbuf;

	unsigned char *write_ptr;/* used to point to the start due to

				  * 2/3 byte header. */

	unsigned int padding;

	unsigned int rlength; /* passed to ssl2_enc */

	int ract_data_length; /* Set when things are encrypted. */

	unsigned int wlength; /* passed to ssl2_enc */

	int wact_data_length; /* Set when things are decrypted. */

	unsigned char *ract_data;

	unsigned char *wact_data;

	unsigned char *mac_data;

	unsigned char *read_key;

	unsigned char *write_key;

		/* Stuff specifically to do with this SSL session */

	unsigned int challenge_length;

	unsigned char challenge[SSL2_MAX_CHALLENGE_LENGTH];

	unsigned int conn_id_length;

	unsigned char conn_id[SSL2_MAX_CONNECTION_ID_LENGTH];

	unsigned int key_material_length;

	unsigned char key_material[SSL2_MAX_KEY_MATERIAL_LENGTH*2];

	unsigned long read_sequence;

	unsigned long write_sequence;

	struct	{

		unsigned int conn_id_length;

		unsigned int cert_type;	

		unsigned int cert_length;

		unsigned int csl; 

		unsigned int clear;

		unsigned int enc; 

		unsigned char ccl[SSL2_MAX_CERT_CHALLENGE_LENGTH];

		unsigned int cipher_spec_length;

		unsigned int session_id_length;

		unsigned int clen;

		unsigned int rlen;

		} tmp;

	} SSL2_STATE;

/* SSLv2 */

/* client */

#define SSL2_ST_SEND_CLIENT_HELLO_A		(0x10|SSL_ST_CONNECT)

#define SSL2_ST_SEND_CLIENT_HELLO_B		(0x11|SSL_ST_CONNECT)

#define SSL2_ST_GET_SERVER_HELLO_A		(0x20|SSL_ST_CONNECT)

#define SSL2_ST_GET_SERVER_HELLO_B		(0x21|SSL_ST_CONNECT)

#define SSL2_ST_SEND_CLIENT_MASTER_KEY_A	(0x30|SSL_ST_CONNECT)

#define SSL2_ST_SEND_CLIENT_MASTER_KEY_B	(0x31|SSL_ST_CONNECT)

#define SSL2_ST_SEND_CLIENT_FINISHED_A		(0x40|SSL_ST_CONNECT)

#define SSL2_ST_SEND_CLIENT_FINISHED_B		(0x41|SSL_ST_CONNECT)

#define SSL2_ST_SEND_CLIENT_CERTIFICATE_A	(0x50|SSL_ST_CONNECT)

#define SSL2_ST_SEND_CLIENT_CERTIFICATE_B	(0x51|SSL_ST_CONNECT)

#define SSL2_ST_SEND_CLIENT_CERTIFICATE_C	(0x52|SSL_ST_CONNECT)

#define SSL2_ST_SEND_CLIENT_CERTIFICATE_D	(0x53|SSL_ST_CONNECT)

#define SSL2_ST_GET_SERVER_VERIFY_A		(0x60|SSL_ST_CONNECT)

#define SSL2_ST_GET_SERVER_VERIFY_B		(0x61|SSL_ST_CONNECT)

#define SSL2_ST_GET_SERVER_FINISHED_A		(0x70|SSL_ST_CONNECT)

#define SSL2_ST_GET_SERVER_FINISHED_B		(0x71|SSL_ST_CONNECT)

#define SSL2_ST_CLIENT_START_ENCRYPTION		(0x80|SSL_ST_CONNECT)

#define SSL2_ST_X509_GET_CLIENT_CERTIFICATE	(0x90|SSL_ST_CONNECT)

/* server */

#define SSL2_ST_GET_CLIENT_HELLO_A		(0x10|SSL_ST_ACCEPT)

#define SSL2_ST_GET_CLIENT_HELLO_B		(0x11|SSL_ST_ACCEPT)

#define SSL2_ST_GET_CLIENT_HELLO_C		(0x12|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_SERVER_HELLO_A		(0x20|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_SERVER_HELLO_B		(0x21|SSL_ST_ACCEPT)

#define SSL2_ST_GET_CLIENT_MASTER_KEY_A		(0x30|SSL_ST_ACCEPT)

#define SSL2_ST_GET_CLIENT_MASTER_KEY_B		(0x31|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_SERVER_VERIFY_A		(0x40|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_SERVER_VERIFY_B		(0x41|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_SERVER_VERIFY_C		(0x42|SSL_ST_ACCEPT)

#define SSL2_ST_GET_CLIENT_FINISHED_A		(0x50|SSL_ST_ACCEPT)

#define SSL2_ST_GET_CLIENT_FINISHED_B		(0x51|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_SERVER_FINISHED_A		(0x60|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_SERVER_FINISHED_B		(0x61|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_REQUEST_CERTIFICATE_A	(0x70|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_REQUEST_CERTIFICATE_B	(0x71|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_REQUEST_CERTIFICATE_C	(0x72|SSL_ST_ACCEPT)

#define SSL2_ST_SEND_REQUEST_CERTIFICATE_D	(0x73|SSL_ST_ACCEPT)

#define SSL2_ST_SERVER_START_ENCRYPTION		(0x80|SSL_ST_ACCEPT)

#define SSL2_ST_X509_GET_SERVER_CERTIFICATE	(0x90|SSL_ST_ACCEPT)

#ifdef  __cplusplus

}

#endif

#endif