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Applied OpenSSL: CTR Mode in File Encryption

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22 Feb 2011CPOL6 min read 64.8K   2K   39  
In this article, the use of open source OpenSSL library for file and disk encryption is described
/* ssl/ssl.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.]
 */
/* ====================================================================
 * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
 *
 * 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 above 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 acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED 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 OpenSSL PROJECT OR
 * ITS 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.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 * ECC cipher suite support in OpenSSL originally developed by 
 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 */
/* ====================================================================
 * Copyright 2005 Nokia. All rights reserved.
 *
 * The portions of the attached software ("Contribution") is developed by
 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 * license.
 *
 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 * support (see RFC 4279) to OpenSSL.
 *
 * No patent licenses or other rights except those expressly stated in
 * the OpenSSL open source license shall be deemed granted or received
 * expressly, by implication, estoppel, or otherwise.
 *
 * No assurances are provided by Nokia that the Contribution does not
 * infringe the patent or other intellectual property rights of any third
 * party or that the license provides you with all the necessary rights
 * to make use of the Contribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 * OTHERWISE.
 */

#ifndef HEADER_SSL_H 
#define HEADER_SSL_H 

#include <openssl/e_os2.h>

#ifndef OPENSSL_NO_COMP
#include <openssl/comp.h>
#endif
#ifndef OPENSSL_NO_BIO
#include <openssl/bio.h>
#endif
#ifndef OPENSSL_NO_DEPRECATED
#ifndef OPENSSL_NO_X509
#include <openssl/x509.h>
#endif
#include <openssl/crypto.h>
#include <openssl/lhash.h>
#include <openssl/buffer.h>
#endif
#include <openssl/pem.h>
#include <openssl/hmac.h>

#include <openssl/kssl.h>
#include <openssl/safestack.h>
#include <openssl/symhacks.h>

#ifdef  __cplusplus
extern "C" {
#endif

/* SSLeay version number for ASN.1 encoding of the session information */
/* Version 0 - initial version
 * Version 1 - added the optional peer certificate
 */
#define SSL_SESSION_ASN1_VERSION 0x0001

/* text strings for the ciphers */
#define SSL_TXT_NULL_WITH_MD5		SSL2_TXT_NULL_WITH_MD5			
#define SSL_TXT_RC4_128_WITH_MD5	SSL2_TXT_RC4_128_WITH_MD5		
#define SSL_TXT_RC4_128_EXPORT40_WITH_MD5 SSL2_TXT_RC4_128_EXPORT40_WITH_MD5	
#define SSL_TXT_RC2_128_CBC_WITH_MD5	SSL2_TXT_RC2_128_CBC_WITH_MD5		
#define SSL_TXT_RC2_128_CBC_EXPORT40_WITH_MD5 SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5	
#define SSL_TXT_IDEA_128_CBC_WITH_MD5	SSL2_TXT_IDEA_128_CBC_WITH_MD5		
#define SSL_TXT_DES_64_CBC_WITH_MD5	SSL2_TXT_DES_64_CBC_WITH_MD5		
#define SSL_TXT_DES_64_CBC_WITH_SHA	SSL2_TXT_DES_64_CBC_WITH_SHA		
#define SSL_TXT_DES_192_EDE3_CBC_WITH_MD5 SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5	
#define SSL_TXT_DES_192_EDE3_CBC_WITH_SHA SSL2_TXT_DES_192_EDE3_CBC_WITH_SHA	

/*    VRS Additional Kerberos5 entries
 */
#define SSL_TXT_KRB5_DES_64_CBC_SHA   SSL3_TXT_KRB5_DES_64_CBC_SHA
#define SSL_TXT_KRB5_DES_192_CBC3_SHA SSL3_TXT_KRB5_DES_192_CBC3_SHA
#define SSL_TXT_KRB5_RC4_128_SHA      SSL3_TXT_KRB5_RC4_128_SHA
#define SSL_TXT_KRB5_IDEA_128_CBC_SHA SSL3_TXT_KRB5_IDEA_128_CBC_SHA
#define SSL_TXT_KRB5_DES_64_CBC_MD5   SSL3_TXT_KRB5_DES_64_CBC_MD5       
#define SSL_TXT_KRB5_DES_192_CBC3_MD5 SSL3_TXT_KRB5_DES_192_CBC3_MD5       
#define SSL_TXT_KRB5_RC4_128_MD5      SSL3_TXT_KRB5_RC4_128_MD5
#define SSL_TXT_KRB5_IDEA_128_CBC_MD5 SSL3_TXT_KRB5_IDEA_128_CBC_MD5 

#define SSL_TXT_KRB5_DES_40_CBC_SHA   SSL3_TXT_KRB5_DES_40_CBC_SHA 
#define SSL_TXT_KRB5_RC2_40_CBC_SHA   SSL3_TXT_KRB5_RC2_40_CBC_SHA 
#define SSL_TXT_KRB5_RC4_40_SHA	      SSL3_TXT_KRB5_RC4_40_SHA
#define SSL_TXT_KRB5_DES_40_CBC_MD5   SSL3_TXT_KRB5_DES_40_CBC_MD5 
#define SSL_TXT_KRB5_RC2_40_CBC_MD5   SSL3_TXT_KRB5_RC2_40_CBC_MD5 
#define SSL_TXT_KRB5_RC4_40_MD5	      SSL3_TXT_KRB5_RC4_40_MD5

#define SSL_TXT_KRB5_DES_40_CBC_SHA   SSL3_TXT_KRB5_DES_40_CBC_SHA
#define SSL_TXT_KRB5_DES_40_CBC_MD5   SSL3_TXT_KRB5_DES_40_CBC_MD5
#define SSL_TXT_KRB5_DES_64_CBC_SHA   SSL3_TXT_KRB5_DES_64_CBC_SHA
#define SSL_TXT_KRB5_DES_64_CBC_MD5   SSL3_TXT_KRB5_DES_64_CBC_MD5
#define SSL_TXT_KRB5_DES_192_CBC3_SHA SSL3_TXT_KRB5_DES_192_CBC3_SHA
#define SSL_TXT_KRB5_DES_192_CBC3_MD5 SSL3_TXT_KRB5_DES_192_CBC3_MD5
#define SSL_MAX_KRB5_PRINCIPAL_LENGTH  256

#define SSL_MAX_SSL_SESSION_ID_LENGTH		32
#define SSL_MAX_SID_CTX_LENGTH			32

#define SSL_MIN_RSA_MODULUS_LENGTH_IN_BYTES	(512/8)
#define SSL_MAX_KEY_ARG_LENGTH			8
#define SSL_MAX_MASTER_KEY_LENGTH		48


/* These are used to specify which ciphers to use and not to use */

#define SSL_TXT_EXP40		"EXPORT40"
#define SSL_TXT_EXP56		"EXPORT56"
#define SSL_TXT_LOW		"LOW"
#define SSL_TXT_MEDIUM		"MEDIUM"
#define SSL_TXT_HIGH		"HIGH"
#define SSL_TXT_FIPS		"FIPS"

#define SSL_TXT_kFZA		"kFZA" /* unused! */
#define	SSL_TXT_aFZA		"aFZA" /* unused! */
#define SSL_TXT_eFZA		"eFZA" /* unused! */
#define SSL_TXT_FZA		"FZA"  /* unused! */

#define	SSL_TXT_aNULL		"aNULL"
#define	SSL_TXT_eNULL		"eNULL"
#define	SSL_TXT_NULL		"NULL"

#define SSL_TXT_kRSA		"kRSA"
#define SSL_TXT_kDHr		"kDHr" /* no such ciphersuites supported! */
#define SSL_TXT_kDHd		"kDHd" /* no such ciphersuites supported! */
#define SSL_TXT_kDH 		"kDH"  /* no such ciphersuites supported! */
#define SSL_TXT_kEDH		"kEDH"
#define SSL_TXT_kKRB5     	"kKRB5"
#define SSL_TXT_kECDHr		"kECDHr"
#define SSL_TXT_kECDHe		"kECDHe"
#define SSL_TXT_kECDH		"kECDH"
#define SSL_TXT_kEECDH		"kEECDH"
#define SSL_TXT_kPSK            "kPSK"
#define SSL_TXT_kGOST		"kGOST"

#define	SSL_TXT_aRSA		"aRSA"
#define	SSL_TXT_aDSS		"aDSS"
#define	SSL_TXT_aDH		"aDH" /* no such ciphersuites supported! */
#define	SSL_TXT_aECDH		"aECDH"
#define SSL_TXT_aKRB5     	"aKRB5"
#define SSL_TXT_aECDSA		"aECDSA"
#define SSL_TXT_aPSK            "aPSK"
#define SSL_TXT_aGOST94	"aGOST94"
#define SSL_TXT_aGOST01 "aGOST01"
#define SSL_TXT_aGOST  "aGOST"

#define	SSL_TXT_DSS		"DSS"
#define SSL_TXT_DH		"DH"
#define SSL_TXT_EDH		"EDH" /* same as "kEDH:-ADH" */
#define SSL_TXT_ADH		"ADH"
#define SSL_TXT_RSA		"RSA"
#define SSL_TXT_ECDH		"ECDH"
#define SSL_TXT_EECDH		"EECDH" /* same as "kEECDH:-AECDH" */
#define SSL_TXT_AECDH		"AECDH"
#define SSL_TXT_ECDSA		"ECDSA"
#define SSL_TXT_KRB5      	"KRB5"
#define SSL_TXT_PSK             "PSK"

#define SSL_TXT_DES		"DES"
#define SSL_TXT_3DES		"3DES"
#define SSL_TXT_RC4		"RC4"
#define SSL_TXT_RC2		"RC2"
#define SSL_TXT_IDEA		"IDEA"
#define SSL_TXT_SEED		"SEED"
#define SSL_TXT_AES128		"AES128"
#define SSL_TXT_AES256		"AES256"
#define SSL_TXT_AES		"AES"
#define SSL_TXT_CAMELLIA128	"CAMELLIA128"
#define SSL_TXT_CAMELLIA256	"CAMELLIA256"
#define SSL_TXT_CAMELLIA	"CAMELLIA"

#define SSL_TXT_MD5		"MD5"
#define SSL_TXT_SHA1		"SHA1"
#define SSL_TXT_SHA		"SHA" /* same as "SHA1" */
#define SSL_TXT_GOST94		"GOST94" 
#define SSL_TXT_GOST89MAC		"GOST89MAC" 

#define SSL_TXT_SSLV2		"SSLv2"
#define SSL_TXT_SSLV3		"SSLv3"
#define SSL_TXT_TLSV1		"TLSv1"

#define SSL_TXT_EXP		"EXP"
#define SSL_TXT_EXPORT		"EXPORT"

#define SSL_TXT_ALL		"ALL"

/*
 * COMPLEMENTOF* definitions. These identifiers are used to (de-select)
 * ciphers normally not being used.
 * Example: "RC4" will activate all ciphers using RC4 including ciphers
 * without authentication, which would normally disabled by DEFAULT (due
 * the "!ADH" being part of default). Therefore "RC4:!COMPLEMENTOFDEFAULT"
 * will make sure that it is also disabled in the specific selection.
 * COMPLEMENTOF* identifiers are portable between version, as adjustments
 * to the default cipher setup will also be included here.
 *
 * COMPLEMENTOFDEFAULT does not experience the same special treatment that
 * DEFAULT gets, as only selection is being done and no sorting as needed
 * for DEFAULT.
 */
#define SSL_TXT_CMPALL		"COMPLEMENTOFALL"
#define SSL_TXT_CMPDEF		"COMPLEMENTOFDEFAULT"

/* The following cipher list is used by default.
 * It also is substituted when an application-defined cipher list string
 * starts with 'DEFAULT'. */
#define SSL_DEFAULT_CIPHER_LIST	"ALL:!aNULL:!eNULL:!SSLv2"
/* As of OpenSSL 1.0.0, ssl_create_cipher_list() in ssl/ssl_ciph.c always
 * starts with a reasonable order, and all we have to do for DEFAULT is
 * throwing out anonymous and unencrypted ciphersuites!
 * (The latter are not actually enabled by ALL, but "ALL:RSA" would enable
 * some of them.)
 */

/* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
#define SSL_SENT_SHUTDOWN	1
#define SSL_RECEIVED_SHUTDOWN	2

#ifdef __cplusplus
}
#endif

#ifdef  __cplusplus
extern "C" {
#endif

#if (defined(OPENSSL_NO_RSA) || defined(OPENSSL_NO_MD5)) && !defined(OPENSSL_NO_SSL2)
#define OPENSSL_NO_SSL2
#endif

#define SSL_FILETYPE_ASN1	X509_FILETYPE_ASN1
#define SSL_FILETYPE_PEM	X509_FILETYPE_PEM

/* This is needed to stop compilers complaining about the
 * 'struct ssl_st *' function parameters used to prototype callbacks
 * in SSL_CTX. */
typedef struct ssl_st *ssl_crock_st;
typedef struct tls_session_ticket_ext_st TLS_SESSION_TICKET_EXT;

/* used to hold info on the particular ciphers used */
typedef struct ssl_cipher_st
	{
	int valid;
	const char *name;		/* text name */
	unsigned long id;		/* id, 4 bytes, first is version */

	/* changed in 0.9.9: these four used to be portions of a single value 'algorithms' */
	unsigned long algorithm_mkey;	/* key exchange algorithm */
	unsigned long algorithm_auth;	/* server authentication */
	unsigned long algorithm_enc;	/* symmetric encryption */
	unsigned long algorithm_mac;	/* symmetric authentication */
	unsigned long algorithm_ssl;	/* (major) protocol version */

	unsigned long algo_strength;	/* strength and export flags */
	unsigned long algorithm2;	/* Extra flags */
	int strength_bits;		/* Number of bits really used */
	int alg_bits;			/* Number of bits for algorithm */
	} SSL_CIPHER;

DECLARE_STACK_OF(SSL_CIPHER)

typedef int (*tls_session_ticket_ext_cb_fn)(SSL *s, const unsigned char *data, int len, void *arg);
typedef int (*tls_session_secret_cb_fn)(SSL *s, void *secret, int *secret_len, STACK_OF(SSL_CIPHER) *peer_ciphers, SSL_CIPHER **cipher, void *arg);

/* Used to hold functions for SSLv2 or SSLv3/TLSv1 functions */
typedef struct ssl_method_st
	{
	int version;
	int (*ssl_new)(SSL *s);
	void (*ssl_clear)(SSL *s);
	void (*ssl_free)(SSL *s);
	int (*ssl_accept)(SSL *s);
	int (*ssl_connect)(SSL *s);
	int (*ssl_read)(SSL *s,void *buf,int len);
	int (*ssl_peek)(SSL *s,void *buf,int len);
	int (*ssl_write)(SSL *s,const void *buf,int len);
	int (*ssl_shutdown)(SSL *s);
	int (*ssl_renegotiate)(SSL *s);
	int (*ssl_renegotiate_check)(SSL *s);
	long (*ssl_get_message)(SSL *s, int st1, int stn, int mt, long
		max, int *ok);
	int (*ssl_read_bytes)(SSL *s, int type, unsigned char *buf, int len, 
		int peek);
	int (*ssl_write_bytes)(SSL *s, int type, const void *buf_, int len);
	int (*ssl_dispatch_alert)(SSL *s);
	long (*ssl_ctrl)(SSL *s,int cmd,long larg,void *parg);
	long (*ssl_ctx_ctrl)(SSL_CTX *ctx,int cmd,long larg,void *parg);
	const SSL_CIPHER *(*get_cipher_by_char)(const unsigned char *ptr);
	int (*put_cipher_by_char)(const SSL_CIPHER *cipher,unsigned char *ptr);
	int (*ssl_pending)(const SSL *s);
	int (*num_ciphers)(void);
	const SSL_CIPHER *(*get_cipher)(unsigned ncipher);
	const struct ssl_method_st *(*get_ssl_method)(int version);
	long (*get_timeout)(void);
	struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
	int (*ssl_version)(void);
	long (*ssl_callback_ctrl)(SSL *s, int cb_id, void (*fp)(void));
	long (*ssl_ctx_callback_ctrl)(SSL_CTX *s, int cb_id, void (*fp)(void));
	} SSL_METHOD;

/* Lets make this into an ASN.1 type structure as follows
 * SSL_SESSION_ID ::= SEQUENCE {
 *	version 		INTEGER,	-- structure version number
 *	SSLversion 		INTEGER,	-- SSL version number
 *	Cipher 			OCTET STRING,	-- the 3 byte cipher ID
 *	Session_ID 		OCTET STRING,	-- the Session ID
 *	Master_key 		OCTET STRING,	-- the master key
 *	KRB5_principal		OCTET STRING	-- optional Kerberos principal
 *	Key_Arg [ 0 ] IMPLICIT	OCTET STRING,	-- the optional Key argument
 *	Time [ 1 ] EXPLICIT	INTEGER,	-- optional Start Time
 *	Timeout [ 2 ] EXPLICIT	INTEGER,	-- optional Timeout ins seconds
 *	Peer [ 3 ] EXPLICIT	X509,		-- optional Peer Certificate
 *	Session_ID_context [ 4 ] EXPLICIT OCTET STRING,   -- the Session ID context
 *	Verify_result [ 5 ] EXPLICIT INTEGER,   -- X509_V_... code for `Peer'
 *	HostName [ 6 ] EXPLICIT OCTET STRING,   -- optional HostName from servername TLS extension 
 *	ECPointFormatList [ 7 ] OCTET STRING,     -- optional EC point format list from TLS extension
 *	PSK_identity_hint [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
 *	PSK_identity [ 9 ] EXPLICIT OCTET STRING -- optional PSK identity
 *	}
 * Look in ssl/ssl_asn1.c for more details
 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
 */
typedef struct ssl_session_st
	{
	int ssl_version;	/* what ssl version session info is
				 * being kept in here? */

	/* only really used in SSLv2 */
	unsigned int key_arg_length;
	unsigned char key_arg[SSL_MAX_KEY_ARG_LENGTH];
	int master_key_length;
	unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
	/* session_id - valid? */
	unsigned int session_id_length;
	unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
	/* this is used to determine whether the session is being reused in
	 * the appropriate context. It is up to the application to set this,
	 * via SSL_new */
	unsigned int sid_ctx_length;
	unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];

#ifndef OPENSSL_NO_KRB5
        unsigned int krb5_client_princ_len;
        unsigned char krb5_client_princ[SSL_MAX_KRB5_PRINCIPAL_LENGTH];
#endif /* OPENSSL_NO_KRB5 */
#ifndef OPENSSL_NO_PSK
	char *psk_identity_hint;
	char *psk_identity;
#endif
	int not_resumable;

	/* The cert is the certificate used to establish this connection */
	struct sess_cert_st /* SESS_CERT */ *sess_cert;

	/* This is the cert for the other end.
	 * On clients, it will be the same as sess_cert->peer_key->x509
	 * (the latter is not enough as sess_cert is not retained
	 * in the external representation of sessions, see ssl_asn1.c). */
	X509 *peer;
	/* when app_verify_callback accepts a session where the peer's certificate
	 * is not ok, we must remember the error for session reuse: */
	long verify_result; /* only for servers */

	int references;
	long timeout;
	long time;

	unsigned int compress_meth;	/* Need to lookup the method */

	const SSL_CIPHER *cipher;
	unsigned long cipher_id;	/* when ASN.1 loaded, this
					 * needs to be used to load
					 * the 'cipher' structure */

	STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */

	CRYPTO_EX_DATA ex_data; /* application specific data */

	/* These are used to make removal of session-ids more
	 * efficient and to implement a maximum cache size. */
	struct ssl_session_st *prev,*next;
#ifndef OPENSSL_NO_TLSEXT
	char *tlsext_hostname;
#ifndef OPENSSL_NO_EC
	size_t tlsext_ecpointformatlist_length;
	unsigned char *tlsext_ecpointformatlist; /* peer's list */
	size_t tlsext_ellipticcurvelist_length;
	unsigned char *tlsext_ellipticcurvelist; /* peer's list */
#endif /* OPENSSL_NO_EC */
	/* RFC4507 info */
	unsigned char *tlsext_tick;	/* Session ticket */
	size_t	tlsext_ticklen;		/* Session ticket length */	
	long tlsext_tick_lifetime_hint;	/* Session lifetime hint in seconds */
#endif
	} SSL_SESSION;


#define SSL_OP_MICROSOFT_SESS_ID_BUG			0x00000001L
#define SSL_OP_NETSCAPE_CHALLENGE_BUG			0x00000002L
/* Allow initial connection to servers that don't support RI */
#define SSL_OP_LEGACY_SERVER_CONNECT			0x00000004L
#define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG		0x00000008L
#define SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG		0x00000010L
#define SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER		0x00000020L
#define SSL_OP_MSIE_SSLV2_RSA_PADDING			0x00000040L /* no effect since 0.9.7h and 0.9.8b */
#define SSL_OP_SSLEAY_080_CLIENT_DH_BUG			0x00000080L
#define SSL_OP_TLS_D5_BUG				0x00000100L
#define SSL_OP_TLS_BLOCK_PADDING_BUG			0x00000200L

/* Disable SSL 3.0/TLS 1.0 CBC vulnerability workaround that was added
 * in OpenSSL 0.9.6d.  Usually (depending on the application protocol)
 * the workaround is not needed.  Unfortunately some broken SSL/TLS
 * implementations cannot handle it at all, which is why we include
 * it in SSL_OP_ALL. */
#define SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS              0x00000800L /* added in 0.9.6e */

/* SSL_OP_ALL: various bug workarounds that should be rather harmless.
 *             This used to be 0x000FFFFFL before 0.9.7. */
#define SSL_OP_ALL					0x80000FFFL

/* DTLS options */
#define SSL_OP_NO_QUERY_MTU                 0x00001000L
/* Turn on Cookie Exchange (on relevant for servers) */
#define SSL_OP_COOKIE_EXCHANGE              0x00002000L
/* Don't use RFC4507 ticket extension */
#define SSL_OP_NO_TICKET	            0x00004000L
/* Use Cisco's "speshul" version of DTLS_BAD_VER (as client)  */
#define SSL_OP_CISCO_ANYCONNECT		    0x00008000L

/* As server, disallow session resumption on renegotiation */
#define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION	0x00010000L
/* Don't use compression even if supported */
#define SSL_OP_NO_COMPRESSION				0x00020000L
/* Permit unsafe legacy renegotiation */
#define SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION	0x00040000L
/* If set, always create a new key when using tmp_ecdh parameters */
#define SSL_OP_SINGLE_ECDH_USE				0x00080000L
/* If set, always create a new key when using tmp_dh parameters */
#define SSL_OP_SINGLE_DH_USE				0x00100000L
/* Set to always use the tmp_rsa key when doing RSA operations,
 * even when this violates protocol specs */
#define SSL_OP_EPHEMERAL_RSA				0x00200000L
/* Set on servers to choose the cipher according to the server's
 * preferences */
#define SSL_OP_CIPHER_SERVER_PREFERENCE			0x00400000L
/* If set, a server will allow a client to issue a SSLv3.0 version number
 * as latest version supported in the premaster secret, even when TLSv1.0
 * (version 3.1) was announced in the client hello. Normally this is
 * forbidden to prevent version rollback attacks. */
#define SSL_OP_TLS_ROLLBACK_BUG				0x00800000L

#define SSL_OP_NO_SSLv2					0x01000000L
#define SSL_OP_NO_SSLv3					0x02000000L
#define SSL_OP_NO_TLSv1					0x04000000L

/* The next flag deliberately changes the ciphertest, this is a check
 * for the PKCS#1 attack */
#define SSL_OP_PKCS1_CHECK_1				0x08000000L
#define SSL_OP_PKCS1_CHECK_2				0x10000000L
#define SSL_OP_NETSCAPE_CA_DN_BUG			0x20000000L
#define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG		0x40000000L
/* Make server add server-hello extension from early version of
 * cryptopro draft, when GOST ciphersuite is negotiated. 
 * Required for interoperability with CryptoPro CSP 3.x 
 */
#define SSL_OP_CRYPTOPRO_TLSEXT_BUG			0x80000000L

/* Allow SSL_write(..., n) to return r with 0 < r < n (i.e. report success
 * when just a single record has been written): */
#define SSL_MODE_ENABLE_PARTIAL_WRITE       0x00000001L
/* Make it possible to retry SSL_write() with changed buffer location
 * (buffer contents must stay the same!); this is not the default to avoid
 * the misconception that non-blocking SSL_write() behaves like
 * non-blocking write(): */
#define SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 0x00000002L
/* Never bother the application with retries if the transport
 * is blocking: */
#define SSL_MODE_AUTO_RETRY 0x00000004L
/* Don't attempt to automatically build certificate chain */
#define SSL_MODE_NO_AUTO_CHAIN 0x00000008L
/* Save RAM by releasing read and write buffers when they're empty. (SSL3 and
 * TLS only.)  "Released" buffers are put onto a free-list in the context
 * or just freed (depending on the context's setting for freelist_max_len). */
#define SSL_MODE_RELEASE_BUFFERS 0x00000010L

/* Note: SSL[_CTX]_set_{options,mode} use |= op on the previous value,
 * they cannot be used to clear bits. */

#define SSL_CTX_set_options(ctx,op) \
	SSL_CTX_ctrl((ctx),SSL_CTRL_OPTIONS,(op),NULL)
#define SSL_CTX_clear_options(ctx,op) \
	SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_OPTIONS,(op),NULL)
#define SSL_CTX_get_options(ctx) \
	SSL_CTX_ctrl((ctx),SSL_CTRL_OPTIONS,0,NULL)
#define SSL_set_options(ssl,op) \
	SSL_ctrl((ssl),SSL_CTRL_OPTIONS,(op),NULL)
#define SSL_clear_options(ssl,op) \
	SSL_ctrl((ssl),SSL_CTRL_CLEAR_OPTIONS,(op),NULL)
#define SSL_get_options(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_OPTIONS,0,NULL)

#define SSL_CTX_set_mode(ctx,op) \
	SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,(op),NULL)
#define SSL_CTX_clear_mode(ctx,op) \
	SSL_CTX_ctrl((ctx),SSL_CTRL_CLEAR_MODE,(op),NULL)
#define SSL_CTX_get_mode(ctx) \
	SSL_CTX_ctrl((ctx),SSL_CTRL_MODE,0,NULL)
#define SSL_clear_mode(ssl,op) \
	SSL_ctrl((ssl),SSL_CTRL_CLEAR_MODE,(op),NULL)
#define SSL_set_mode(ssl,op) \
	SSL_ctrl((ssl),SSL_CTRL_MODE,(op),NULL)
#define SSL_get_mode(ssl) \
        SSL_ctrl((ssl),SSL_CTRL_MODE,0,NULL)
#define SSL_set_mtu(ssl, mtu) \
        SSL_ctrl((ssl),SSL_CTRL_SET_MTU,(mtu),NULL)

#define SSL_get_secure_renegotiation_support(ssl) \
	SSL_ctrl((ssl), SSL_CTRL_GET_RI_SUPPORT, 0, NULL)

void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg));
void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg));
#define SSL_CTX_set_msg_callback_arg(ctx, arg) SSL_CTX_ctrl((ctx), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))
#define SSL_set_msg_callback_arg(ssl, arg) SSL_ctrl((ssl), SSL_CTRL_SET_MSG_CALLBACK_ARG, 0, (arg))



#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32)
#define SSL_MAX_CERT_LIST_DEFAULT 1024*30 /* 30k max cert list :-) */
#else
#define SSL_MAX_CERT_LIST_DEFAULT 1024*100 /* 100k max cert list :-) */
#endif

#define SSL_SESSION_CACHE_MAX_SIZE_DEFAULT	(1024*20)

/* This callback type is used inside SSL_CTX, SSL, and in the functions that set
 * them. It is used to override the generation of SSL/TLS session IDs in a
 * server. Return value should be zero on an error, non-zero to proceed. Also,
 * callbacks should themselves check if the id they generate is unique otherwise
 * the SSL handshake will fail with an error - callbacks can do this using the
 * 'ssl' value they're passed by;
 *      SSL_has_matching_session_id(ssl, id, *id_len)
 * The length value passed in is set at the maximum size the session ID can be.
 * In SSLv2 this is 16 bytes, whereas SSLv3/TLSv1 it is 32 bytes. The callback
 * can alter this length to be less if desired, but under SSLv2 session IDs are
 * supposed to be fixed at 16 bytes so the id will be padded after the callback
 * returns in this case. It is also an error for the callback to set the size to
 * zero. */
typedef int (*GEN_SESSION_CB)(const SSL *ssl, unsigned char *id,
				unsigned int *id_len);

typedef struct ssl_comp_st
	{
	int id;
	const char *name;
#ifndef OPENSSL_NO_COMP
	COMP_METHOD *method;
#else
	char *method;
#endif
	} SSL_COMP;

DECLARE_STACK_OF(SSL_COMP)
DECLARE_LHASH_OF(SSL_SESSION);

struct ssl_ctx_st
	{
	const SSL_METHOD *method;

	STACK_OF(SSL_CIPHER) *cipher_list;
	/* same as above but sorted for lookup */
	STACK_OF(SSL_CIPHER) *cipher_list_by_id;

	struct x509_store_st /* X509_STORE */ *cert_store;
	LHASH_OF(SSL_SESSION) *sessions;
	/* Most session-ids that will be cached, default is
	 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited. */
	unsigned long session_cache_size;
	struct ssl_session_st *session_cache_head;
	struct ssl_session_st *session_cache_tail;

	/* This can have one of 2 values, ored together,
	 * SSL_SESS_CACHE_CLIENT,
	 * SSL_SESS_CACHE_SERVER,
	 * Default is SSL_SESSION_CACHE_SERVER, which means only
	 * SSL_accept which cache SSL_SESSIONS. */
	int session_cache_mode;

	/* If timeout is not 0, it is the default timeout value set
	 * when SSL_new() is called.  This has been put in to make
	 * life easier to set things up */
	long session_timeout;

	/* If this callback is not null, it will be called each
	 * time a session id is added to the cache.  If this function
	 * returns 1, it means that the callback will do a
	 * SSL_SESSION_free() when it has finished using it.  Otherwise,
	 * on 0, it means the callback has finished with it.
	 * If remove_session_cb is not null, it will be called when
	 * a session-id is removed from the cache.  After the call,
	 * OpenSSL will SSL_SESSION_free() it. */
	int (*new_session_cb)(struct ssl_st *ssl,SSL_SESSION *sess);
	void (*remove_session_cb)(struct ssl_ctx_st *ctx,SSL_SESSION *sess);
	SSL_SESSION *(*get_session_cb)(struct ssl_st *ssl,
		unsigned char *data,int len,int *copy);

	struct
		{
		int sess_connect;	/* SSL new conn - started */
		int sess_connect_renegotiate;/* SSL reneg - requested */
		int sess_connect_good;	/* SSL new conne/reneg - finished */
		int sess_accept;	/* SSL new accept - started */
		int sess_accept_renegotiate;/* SSL reneg - requested */
		int sess_accept_good;	/* SSL accept/reneg - finished */
		int sess_miss;		/* session lookup misses  */
		int sess_timeout;	/* reuse attempt on timeouted session */
		int sess_cache_full;	/* session removed due to full cache */
		int sess_hit;		/* session reuse actually done */
		int sess_cb_hit;	/* session-id that was not
					 * in the cache was
					 * passed back via the callback.  This
					 * indicates that the application is
					 * supplying session-id's from other
					 * processes - spooky :-) */
		} stats;

	int references;

	/* if defined, these override the X509_verify_cert() calls */
	int (*app_verify_callback)(X509_STORE_CTX *, void *);
	void *app_verify_arg;
	/* before OpenSSL 0.9.7, 'app_verify_arg' was ignored
	 * ('app_verify_callback' was called with just one argument) */

	/* Default password callback. */
	pem_password_cb *default_passwd_callback;

	/* Default password callback user data. */
	void *default_passwd_callback_userdata;

	/* get client cert callback */
	int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey);

    /* cookie generate callback */
    int (*app_gen_cookie_cb)(SSL *ssl, unsigned char *cookie, 
        unsigned int *cookie_len);

    /* verify cookie callback */
    int (*app_verify_cookie_cb)(SSL *ssl, unsigned char *cookie, 
        unsigned int cookie_len);

	CRYPTO_EX_DATA ex_data;

	const EVP_MD *rsa_md5;/* For SSLv2 - name is 'ssl2-md5' */
	const EVP_MD *md5;	/* For SSLv3/TLSv1 'ssl3-md5' */
	const EVP_MD *sha1;   /* For SSLv3/TLSv1 'ssl3->sha1' */

	STACK_OF(X509) *extra_certs;
	STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */


	/* Default values used when no per-SSL value is defined follow */

	void (*info_callback)(const SSL *ssl,int type,int val); /* used if SSL's info_callback is NULL */

	/* what we put in client cert requests */
	STACK_OF(X509_NAME) *client_CA;


	/* Default values to use in SSL structures follow (these are copied by SSL_new) */

	unsigned long options;
	unsigned long mode;
	long max_cert_list;

	struct cert_st /* CERT */ *cert;
	int read_ahead;

	/* callback that allows applications to peek at protocol messages */
	void (*msg_callback)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg);
	void *msg_callback_arg;

	int verify_mode;
	unsigned int sid_ctx_length;
	unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
	int (*default_verify_callback)(int ok,X509_STORE_CTX *ctx); /* called 'verify_callback' in the SSL */

	/* Default generate session ID callback. */
	GEN_SESSION_CB generate_session_id;

	X509_VERIFY_PARAM *param;

#if 0
	int purpose;		/* Purpose setting */
	int trust;		/* Trust setting */
#endif

	int quiet_shutdown;

	/* Maximum amount of data to send in one fragment.
	 * actual record size can be more than this due to
	 * padding and MAC overheads.
	 */
	unsigned int max_send_fragment;

#ifndef OPENSSL_ENGINE
	/* Engine to pass requests for client certs to
	 */
	ENGINE *client_cert_engine;
#endif

#ifndef OPENSSL_NO_TLSEXT
	/* TLS extensions servername callback */
	int (*tlsext_servername_callback)(SSL*, int *, void *);
	void *tlsext_servername_arg;
	/* RFC 4507 session ticket keys */
	unsigned char tlsext_tick_key_name[16];
	unsigned char tlsext_tick_hmac_key[16];
	unsigned char tlsext_tick_aes_key[16];
	/* Callback to support customisation of ticket key setting */
	int (*tlsext_ticket_key_cb)(SSL *ssl,
					unsigned char *name, unsigned char *iv,
					EVP_CIPHER_CTX *ectx,
 					HMAC_CTX *hctx, int enc);

	/* certificate status request info */
	/* Callback for status request */
	int (*tlsext_status_cb)(SSL *ssl, void *arg);
	void *tlsext_status_arg;

	/* draft-rescorla-tls-opaque-prf-input-00.txt information */
	int (*tlsext_opaque_prf_input_callback)(SSL *, void *peerinput, size_t len, void *arg);
	void *tlsext_opaque_prf_input_callback_arg;
#endif

#ifndef OPENSSL_NO_PSK
	char *psk_identity_hint;
	unsigned int (*psk_client_callback)(SSL *ssl, const char *hint, char *identity,
		unsigned int max_identity_len, unsigned char *psk,
		unsigned int max_psk_len);
	unsigned int (*psk_server_callback)(SSL *ssl, const char *identity,
		unsigned char *psk, unsigned int max_psk_len);
#endif

#ifndef OPENSSL_NO_BUF_FREELISTS
#define SSL_MAX_BUF_FREELIST_LEN_DEFAULT 32
	unsigned int freelist_max_len;
	struct ssl3_buf_freelist_st *wbuf_freelist;
	struct ssl3_buf_freelist_st *rbuf_freelist;
#endif
	};

#define SSL_SESS_CACHE_OFF			0x0000
#define SSL_SESS_CACHE_CLIENT			0x0001
#define SSL_SESS_CACHE_SERVER			0x0002
#define SSL_SESS_CACHE_BOTH	(SSL_SESS_CACHE_CLIENT|SSL_SESS_CACHE_SERVER)
#define SSL_SESS_CACHE_NO_AUTO_CLEAR		0x0080
/* enough comments already ... see SSL_CTX_set_session_cache_mode(3) */
#define SSL_SESS_CACHE_NO_INTERNAL_LOOKUP	0x0100
#define SSL_SESS_CACHE_NO_INTERNAL_STORE	0x0200
#define SSL_SESS_CACHE_NO_INTERNAL \
	(SSL_SESS_CACHE_NO_INTERNAL_LOOKUP|SSL_SESS_CACHE_NO_INTERNAL_STORE)

LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx);
#define SSL_CTX_sess_number(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_NUMBER,0,NULL)
#define SSL_CTX_sess_connect(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT,0,NULL)
#define SSL_CTX_sess_connect_good(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_GOOD,0,NULL)
#define SSL_CTX_sess_connect_renegotiate(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CONNECT_RENEGOTIATE,0,NULL)
#define SSL_CTX_sess_accept(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT,0,NULL)
#define SSL_CTX_sess_accept_renegotiate(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_RENEGOTIATE,0,NULL)
#define SSL_CTX_sess_accept_good(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_ACCEPT_GOOD,0,NULL)
#define SSL_CTX_sess_hits(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_HIT,0,NULL)
#define SSL_CTX_sess_cb_hits(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CB_HIT,0,NULL)
#define SSL_CTX_sess_misses(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_MISSES,0,NULL)
#define SSL_CTX_sess_timeouts(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_TIMEOUTS,0,NULL)
#define SSL_CTX_sess_cache_full(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SESS_CACHE_FULL,0,NULL)

void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, int (*new_session_cb)(struct ssl_st *ssl,SSL_SESSION *sess));
int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(struct ssl_st *ssl, SSL_SESSION *sess);
void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, void (*remove_session_cb)(struct ssl_ctx_st *ctx,SSL_SESSION *sess));
void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(struct ssl_ctx_st *ctx, SSL_SESSION *sess);
void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, SSL_SESSION *(*get_session_cb)(struct ssl_st *ssl, unsigned char *data,int len,int *copy));
SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(struct ssl_st *ssl, unsigned char *Data, int len, int *copy);
void SSL_CTX_set_info_callback(SSL_CTX *ctx, void (*cb)(const SSL *ssl,int type,int val));
void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,int type,int val);
void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey));
int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL *ssl, X509 **x509, EVP_PKEY **pkey);
#ifndef OPENSSL_NO_ENGINE
int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e);
#endif
void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, int (*app_gen_cookie_cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len));
void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, int (*app_verify_cookie_cb)(SSL *ssl, unsigned char *cookie, unsigned int cookie_len));

#ifndef OPENSSL_NO_PSK
/* the maximum length of the buffer given to callbacks containing the
 * resulting identity/psk */
#define PSK_MAX_IDENTITY_LEN 128
#define PSK_MAX_PSK_LEN 256
void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, 
	unsigned int (*psk_client_callback)(SSL *ssl, const char *hint, 
		char *identity, unsigned int max_identity_len, unsigned char *psk,
		unsigned int max_psk_len));
void SSL_set_psk_client_callback(SSL *ssl, 
	unsigned int (*psk_client_callback)(SSL *ssl, const char *hint, 
		char *identity, unsigned int max_identity_len, unsigned char *psk,
		unsigned int max_psk_len));
void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, 
	unsigned int (*psk_server_callback)(SSL *ssl, const char *identity,
		unsigned char *psk, unsigned int max_psk_len));
void SSL_set_psk_server_callback(SSL *ssl,
	unsigned int (*psk_server_callback)(SSL *ssl, const char *identity,
		unsigned char *psk, unsigned int max_psk_len));
int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint);
int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint);
const char *SSL_get_psk_identity_hint(const SSL *s);
const char *SSL_get_psk_identity(const SSL *s);
#endif

#define SSL_NOTHING	1
#define SSL_WRITING	2
#define SSL_READING	3
#define SSL_X509_LOOKUP	4

/* These will only be used when doing non-blocking IO */
#define SSL_want_nothing(s)	(SSL_want(s) == SSL_NOTHING)
#define SSL_want_read(s)	(SSL_want(s) == SSL_READING)
#define SSL_want_write(s)	(SSL_want(s) == SSL_WRITING)
#define SSL_want_x509_lookup(s)	(SSL_want(s) == SSL_X509_LOOKUP)

#define SSL_MAC_FLAG_READ_MAC_STREAM 1
#define SSL_MAC_FLAG_WRITE_MAC_STREAM 2

struct ssl_st
	{
	/* protocol version
	 * (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION, DTLS1_VERSION)
	 */
	int version;
	int type; /* SSL_ST_CONNECT or SSL_ST_ACCEPT */

	const SSL_METHOD *method; /* SSLv3 */

	/* There are 2 BIO's even though they are normally both the
	 * same.  This is so data can be read and written to different
	 * handlers */

#ifndef OPENSSL_NO_BIO
	BIO *rbio; /* used by SSL_read */
	BIO *wbio; /* used by SSL_write */
	BIO *bbio; /* used during session-id reuse to concatenate
		    * messages */
#else
	char *rbio; /* used by SSL_read */
	char *wbio; /* used by SSL_write */
	char *bbio;
#endif
	/* This holds a variable that indicates what we were doing
	 * when a 0 or -1 is returned.  This is needed for
	 * non-blocking IO so we know what request needs re-doing when
	 * in SSL_accept or SSL_connect */
	int rwstate;

	/* true when we are actually in SSL_accept() or SSL_connect() */
	int in_handshake;
	int (*handshake_func)(SSL *);

	/* Imagine that here's a boolean member "init" that is
	 * switched as soon as SSL_set_{accept/connect}_state
	 * is called for the first time, so that "state" and
	 * "handshake_func" are properly initialized.  But as
	 * handshake_func is == 0 until then, we use this
	 * test instead of an "init" member.
	 */

	int server;	/* are we the server side? - mostly used by SSL_clear*/

	int new_session;/* 1 if we are to use a new session.
	                 * 2 if we are a server and are inside a handshake
	                 *   (i.e. not just sending a HelloRequest)
	                 * NB: For servers, the 'new' session may actually be a previously
	                 * cached session or even the previous session unless
	                 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */
	int quiet_shutdown;/* don't send shutdown packets */
	int shutdown;	/* we have shut things down, 0x01 sent, 0x02
			 * for received */
	int state;	/* where we are */
	int rstate;	/* where we are when reading */

	BUF_MEM *init_buf;	/* buffer used during init */
	void *init_msg;   	/* pointer to handshake message body, set by ssl3_get_message() */
	int init_num;		/* amount read/written */
	int init_off;		/* amount read/written */

	/* used internally to point at a raw packet */
	unsigned char *packet;
	unsigned int packet_length;

	struct ssl2_state_st *s2; /* SSLv2 variables */
	struct ssl3_state_st *s3; /* SSLv3 variables */
	struct dtls1_state_st *d1; /* DTLSv1 variables */

	int read_ahead;		/* Read as many input bytes as possible
	               	 	 * (for non-blocking reads) */

	/* callback that allows applications to peek at protocol messages */
	void (*msg_callback)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg);
	void *msg_callback_arg;

	int hit;		/* reusing a previous session */

	X509_VERIFY_PARAM *param;

#if 0
	int purpose;		/* Purpose setting */
	int trust;		/* Trust setting */
#endif

	/* crypto */
	STACK_OF(SSL_CIPHER) *cipher_list;
	STACK_OF(SSL_CIPHER) *cipher_list_by_id;

	/* These are the ones being used, the ones in SSL_SESSION are
	 * the ones to be 'copied' into these ones */
	int mac_flags; 
	EVP_CIPHER_CTX *enc_read_ctx;		/* cryptographic state */
	EVP_MD_CTX *read_hash;		/* used for mac generation */
#ifndef OPENSSL_NO_COMP
	COMP_CTX *expand;			/* uncompress */
#else
	char *expand;
#endif

	EVP_CIPHER_CTX *enc_write_ctx;		/* cryptographic state */
	EVP_MD_CTX *write_hash;		/* used for mac generation */
#ifndef OPENSSL_NO_COMP
	COMP_CTX *compress;			/* compression */
#else
	char *compress;	
#endif

	/* session info */

	/* client cert? */
	/* This is used to hold the server certificate used */
	struct cert_st /* CERT */ *cert;

	/* the session_id_context is used to ensure sessions are only reused
	 * in the appropriate context */
	unsigned int sid_ctx_length;
	unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];

	/* This can also be in the session once a session is established */
	SSL_SESSION *session;

	/* Default generate session ID callback. */
	GEN_SESSION_CB generate_session_id;

	/* Used in SSL2 and SSL3 */
	int verify_mode;	/* 0 don't care about verify failure.
				 * 1 fail if verify fails */
	int (*verify_callback)(int ok,X509_STORE_CTX *ctx); /* fail if callback returns 0 */

	void (*info_callback)(const SSL *ssl,int type,int val); /* optional informational callback */

	int error;		/* error bytes to be written */
	int error_code;		/* actual code */

#ifndef OPENSSL_NO_KRB5
	KSSL_CTX *kssl_ctx;     /* Kerberos 5 context */
#endif	/* OPENSSL_NO_KRB5 */

#ifndef OPENSSL_NO_PSK
	unsigned int (*psk_client_callback)(SSL *ssl, const char *hint, char *identity,
		unsigned int max_identity_len, unsigned char *psk,
		unsigned int max_psk_len);
	unsigned int (*psk_server_callback)(SSL *ssl, const char *identity,
		unsigned char *psk, unsigned int max_psk_len);
#endif

	SSL_CTX *ctx;
	/* set this flag to 1 and a sleep(1) is put into all SSL_read()
	 * and SSL_write() calls, good for nbio debuging :-) */
	int debug;	

	/* extra application data */
	long verify_result;
	CRYPTO_EX_DATA ex_data;

	/* for server side, keep the list of CA_dn we can use */
	STACK_OF(X509_NAME) *client_CA;

	int references;
	unsigned long options; /* protocol behaviour */
	unsigned long mode; /* API behaviour */
	long max_cert_list;
	int first_packet;
	int client_version;	/* what was passed, used for
				 * SSLv3/TLS rollback check */
	unsigned int max_send_fragment;
#ifndef OPENSSL_NO_TLSEXT
	/* TLS extension debug callback */
	void (*tlsext_debug_cb)(SSL *s, int client_server, int type,
					unsigned char *data, int len,
					void *arg);
	void *tlsext_debug_arg;
	char *tlsext_hostname;
	int servername_done;   /* no further mod of servername 
	                          0 : call the servername extension callback.
	                          1 : prepare 2, allow last ack just after in server callback.
	                          2 : don't call servername callback, no ack in server hello
	                       */
	/* certificate status request info */
	/* Status type or -1 if no status type */
	int tlsext_status_type;
	/* Expect OCSP CertificateStatus message */
	int tlsext_status_expected;
	/* OCSP status request only */
	STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids;
	X509_EXTENSIONS *tlsext_ocsp_exts;
	/* OCSP response received or to be sent */
	unsigned char *tlsext_ocsp_resp;
	int tlsext_ocsp_resplen;

	/* RFC4507 session ticket expected to be received or sent */
	int tlsext_ticket_expected;
#ifndef OPENSSL_NO_EC
	size_t tlsext_ecpointformatlist_length;
	unsigned char *tlsext_ecpointformatlist; /* our list */
	size_t tlsext_ellipticcurvelist_length;
	unsigned char *tlsext_ellipticcurvelist; /* our list */
#endif /* OPENSSL_NO_EC */

	/* draft-rescorla-tls-opaque-prf-input-00.txt information to be used for handshakes */
	void *tlsext_opaque_prf_input;
	size_t tlsext_opaque_prf_input_len;

	/* TLS Session Ticket extension override */
	TLS_SESSION_TICKET_EXT *tlsext_session_ticket;

	/* TLS Session Ticket extension callback */
	tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb;
	void *tls_session_ticket_ext_cb_arg;

	/* TLS pre-shared secret session resumption */
	tls_session_secret_cb_fn tls_session_secret_cb;
	void *tls_session_secret_cb_arg;

	SSL_CTX * initial_ctx; /* initial ctx, used to store sessions */
#define session_ctx initial_ctx
#else
#define session_ctx ctx
#endif /* OPENSSL_NO_TLSEXT */
	};

#ifdef __cplusplus
}
#endif

#include <openssl/ssl2.h>
#include <openssl/ssl3.h>
#include <openssl/tls1.h> /* This is mostly sslv3 with a few tweaks */
#include <openssl/dtls1.h> /* Datagram TLS */
#include <openssl/ssl23.h>

#ifdef  __cplusplus
extern "C" {
#endif

/* compatibility */
#define SSL_set_app_data(s,arg)		(SSL_set_ex_data(s,0,(char *)arg))
#define SSL_get_app_data(s)		(SSL_get_ex_data(s,0))
#define SSL_SESSION_set_app_data(s,a)	(SSL_SESSION_set_ex_data(s,0,(char *)a))
#define SSL_SESSION_get_app_data(s)	(SSL_SESSION_get_ex_data(s,0))
#define SSL_CTX_get_app_data(ctx)	(SSL_CTX_get_ex_data(ctx,0))
#define SSL_CTX_set_app_data(ctx,arg)	(SSL_CTX_set_ex_data(ctx,0,(char *)arg))

/* The following are the possible values for ssl->state are are
 * used to indicate where we are up to in the SSL connection establishment.
 * The macros that follow are about the only things you should need to use
 * and even then, only when using non-blocking IO.
 * It can also be useful to work out where you were when the connection
 * failed */

#define SSL_ST_CONNECT			0x1000
#define SSL_ST_ACCEPT			0x2000
#define SSL_ST_MASK			0x0FFF
#define SSL_ST_INIT			(SSL_ST_CONNECT|SSL_ST_ACCEPT)
#define SSL_ST_BEFORE			0x4000
#define SSL_ST_OK			0x03
#define SSL_ST_RENEGOTIATE		(0x04|SSL_ST_INIT)

#define SSL_CB_LOOP			0x01
#define SSL_CB_EXIT			0x02
#define SSL_CB_READ			0x04
#define SSL_CB_WRITE			0x08
#define SSL_CB_ALERT			0x4000 /* used in callback */
#define SSL_CB_READ_ALERT		(SSL_CB_ALERT|SSL_CB_READ)
#define SSL_CB_WRITE_ALERT		(SSL_CB_ALERT|SSL_CB_WRITE)
#define SSL_CB_ACCEPT_LOOP		(SSL_ST_ACCEPT|SSL_CB_LOOP)
#define SSL_CB_ACCEPT_EXIT		(SSL_ST_ACCEPT|SSL_CB_EXIT)
#define SSL_CB_CONNECT_LOOP		(SSL_ST_CONNECT|SSL_CB_LOOP)
#define SSL_CB_CONNECT_EXIT		(SSL_ST_CONNECT|SSL_CB_EXIT)
#define SSL_CB_HANDSHAKE_START		0x10
#define SSL_CB_HANDSHAKE_DONE		0x20

/* Is the SSL_connection established? */
#define SSL_get_state(a)		SSL_state(a)
#define SSL_is_init_finished(a)		(SSL_state(a) == SSL_ST_OK)
#define SSL_in_init(a)			(SSL_state(a)&SSL_ST_INIT)
#define SSL_in_before(a)		(SSL_state(a)&SSL_ST_BEFORE)
#define SSL_in_connect_init(a)		(SSL_state(a)&SSL_ST_CONNECT)
#define SSL_in_accept_init(a)		(SSL_state(a)&SSL_ST_ACCEPT)

/* The following 2 states are kept in ssl->rstate when reads fail,
 * you should not need these */
#define SSL_ST_READ_HEADER			0xF0
#define SSL_ST_READ_BODY			0xF1
#define SSL_ST_READ_DONE			0xF2

/* Obtain latest Finished message
 *   -- that we sent (SSL_get_finished)
 *   -- that we expected from peer (SSL_get_peer_finished).
 * Returns length (0 == no Finished so far), copies up to 'count' bytes. */
size_t SSL_get_finished(const SSL *s, void *buf, size_t count);
size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count);

/* use either SSL_VERIFY_NONE or SSL_VERIFY_PEER, the last 2 options
 * are 'ored' with SSL_VERIFY_PEER if they are desired */
#define SSL_VERIFY_NONE			0x00
#define SSL_VERIFY_PEER			0x01
#define SSL_VERIFY_FAIL_IF_NO_PEER_CERT	0x02
#define SSL_VERIFY_CLIENT_ONCE		0x04

#define OpenSSL_add_ssl_algorithms()	SSL_library_init()
#define SSLeay_add_ssl_algorithms()	SSL_library_init()

/* this is for backward compatibility */
#if 0 /* NEW_SSLEAY */
#define SSL_CTX_set_default_verify(a,b,c) SSL_CTX_set_verify(a,b,c)
#define SSL_set_pref_cipher(c,n)	SSL_set_cipher_list(c,n)
#define SSL_add_session(a,b)            SSL_CTX_add_session((a),(b))
#define SSL_remove_session(a,b)		SSL_CTX_remove_session((a),(b))
#define SSL_flush_sessions(a,b)		SSL_CTX_flush_sessions((a),(b))
#endif
/* More backward compatibility */
#define SSL_get_cipher(s) \
		SSL_CIPHER_get_name(SSL_get_current_cipher(s))
#define SSL_get_cipher_bits(s,np) \
		SSL_CIPHER_get_bits(SSL_get_current_cipher(s),np)
#define SSL_get_cipher_version(s) \
		SSL_CIPHER_get_version(SSL_get_current_cipher(s))
#define SSL_get_cipher_name(s) \
		SSL_CIPHER_get_name(SSL_get_current_cipher(s))
#define SSL_get_time(a)		SSL_SESSION_get_time(a)
#define SSL_set_time(a,b)	SSL_SESSION_set_time((a),(b))
#define SSL_get_timeout(a)	SSL_SESSION_get_timeout(a)
#define SSL_set_timeout(a,b)	SSL_SESSION_set_timeout((a),(b))

#define d2i_SSL_SESSION_bio(bp,s_id) ASN1_d2i_bio_of(SSL_SESSION,SSL_SESSION_new,d2i_SSL_SESSION,bp,s_id)
#define i2d_SSL_SESSION_bio(bp,s_id) ASN1_i2d_bio_of(SSL_SESSION,i2d_SSL_SESSION,bp,s_id)

DECLARE_PEM_rw(SSL_SESSION, SSL_SESSION)

#define SSL_AD_REASON_OFFSET		1000 /* offset to get SSL_R_... value from SSL_AD_... */

/* These alert types are for SSLv3 and TLSv1 */
#define SSL_AD_CLOSE_NOTIFY		SSL3_AD_CLOSE_NOTIFY
#define SSL_AD_UNEXPECTED_MESSAGE	SSL3_AD_UNEXPECTED_MESSAGE /* fatal */
#define SSL_AD_BAD_RECORD_MAC		SSL3_AD_BAD_RECORD_MAC     /* fatal */
#define SSL_AD_DECRYPTION_FAILED	TLS1_AD_DECRYPTION_FAILED
#define SSL_AD_RECORD_OVERFLOW		TLS1_AD_RECORD_OVERFLOW
#define SSL_AD_DECOMPRESSION_FAILURE	SSL3_AD_DECOMPRESSION_FAILURE/* fatal */
#define SSL_AD_HANDSHAKE_FAILURE	SSL3_AD_HANDSHAKE_FAILURE/* fatal */
#define SSL_AD_NO_CERTIFICATE		SSL3_AD_NO_CERTIFICATE /* Not for TLS */
#define SSL_AD_BAD_CERTIFICATE		SSL3_AD_BAD_CERTIFICATE
#define SSL_AD_UNSUPPORTED_CERTIFICATE	SSL3_AD_UNSUPPORTED_CERTIFICATE
#define SSL_AD_CERTIFICATE_REVOKED	SSL3_AD_CERTIFICATE_REVOKED
#define SSL_AD_CERTIFICATE_EXPIRED	SSL3_AD_CERTIFICATE_EXPIRED
#define SSL_AD_CERTIFICATE_UNKNOWN	SSL3_AD_CERTIFICATE_UNKNOWN
#define SSL_AD_ILLEGAL_PARAMETER	SSL3_AD_ILLEGAL_PARAMETER   /* fatal */
#define SSL_AD_UNKNOWN_CA		TLS1_AD_UNKNOWN_CA	/* fatal */
#define SSL_AD_ACCESS_DENIED		TLS1_AD_ACCESS_DENIED	/* fatal */
#define SSL_AD_DECODE_ERROR		TLS1_AD_DECODE_ERROR	/* fatal */
#define SSL_AD_DECRYPT_ERROR		TLS1_AD_DECRYPT_ERROR
#define SSL_AD_EXPORT_RESTRICTION	TLS1_AD_EXPORT_RESTRICTION/* fatal */
#define SSL_AD_PROTOCOL_VERSION		TLS1_AD_PROTOCOL_VERSION /* fatal */
#define SSL_AD_INSUFFICIENT_SECURITY	TLS1_AD_INSUFFICIENT_SECURITY/* fatal */
#define SSL_AD_INTERNAL_ERROR		TLS1_AD_INTERNAL_ERROR	/* fatal */
#define SSL_AD_USER_CANCELLED		TLS1_AD_USER_CANCELLED
#define SSL_AD_NO_RENEGOTIATION		TLS1_AD_NO_RENEGOTIATION
#define SSL_AD_UNSUPPORTED_EXTENSION	TLS1_AD_UNSUPPORTED_EXTENSION
#define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
#define SSL_AD_UNRECOGNIZED_NAME	TLS1_AD_UNRECOGNIZED_NAME
#define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
#define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
#define SSL_AD_UNKNOWN_PSK_IDENTITY     TLS1_AD_UNKNOWN_PSK_IDENTITY /* fatal */

#define SSL_ERROR_NONE			0
#define SSL_ERROR_SSL			1
#define SSL_ERROR_WANT_READ		2
#define SSL_ERROR_WANT_WRITE		3
#define SSL_ERROR_WANT_X509_LOOKUP	4
#define SSL_ERROR_SYSCALL		5 /* look at error stack/return value/errno */
#define SSL_ERROR_ZERO_RETURN		6
#define SSL_ERROR_WANT_CONNECT		7
#define SSL_ERROR_WANT_ACCEPT		8

#define SSL_CTRL_NEED_TMP_RSA			1
#define SSL_CTRL_SET_TMP_RSA			2
#define SSL_CTRL_SET_TMP_DH			3
#define SSL_CTRL_SET_TMP_ECDH			4
#define SSL_CTRL_SET_TMP_RSA_CB			5
#define SSL_CTRL_SET_TMP_DH_CB			6
#define SSL_CTRL_SET_TMP_ECDH_CB		7

#define SSL_CTRL_GET_SESSION_REUSED		8
#define SSL_CTRL_GET_CLIENT_CERT_REQUEST	9
#define SSL_CTRL_GET_NUM_RENEGOTIATIONS		10
#define SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS	11
#define SSL_CTRL_GET_TOTAL_RENEGOTIATIONS	12
#define SSL_CTRL_GET_FLAGS			13
#define SSL_CTRL_EXTRA_CHAIN_CERT		14

#define SSL_CTRL_SET_MSG_CALLBACK               15
#define SSL_CTRL_SET_MSG_CALLBACK_ARG           16

/* only applies to datagram connections */
#define SSL_CTRL_SET_MTU                17
/* Stats */
#define SSL_CTRL_SESS_NUMBER			20
#define SSL_CTRL_SESS_CONNECT			21
#define SSL_CTRL_SESS_CONNECT_GOOD		22
#define SSL_CTRL_SESS_CONNECT_RENEGOTIATE	23
#define SSL_CTRL_SESS_ACCEPT			24
#define SSL_CTRL_SESS_ACCEPT_GOOD		25
#define SSL_CTRL_SESS_ACCEPT_RENEGOTIATE	26
#define SSL_CTRL_SESS_HIT			27
#define SSL_CTRL_SESS_CB_HIT			28
#define SSL_CTRL_SESS_MISSES			29
#define SSL_CTRL_SESS_TIMEOUTS			30
#define SSL_CTRL_SESS_CACHE_FULL		31
#define SSL_CTRL_OPTIONS			32
#define SSL_CTRL_MODE				33

#define SSL_CTRL_GET_READ_AHEAD			40
#define SSL_CTRL_SET_READ_AHEAD			41
#define SSL_CTRL_SET_SESS_CACHE_SIZE		42
#define SSL_CTRL_GET_SESS_CACHE_SIZE		43
#define SSL_CTRL_SET_SESS_CACHE_MODE		44
#define SSL_CTRL_GET_SESS_CACHE_MODE		45

#define SSL_CTRL_GET_MAX_CERT_LIST		50
#define SSL_CTRL_SET_MAX_CERT_LIST		51

#define SSL_CTRL_SET_MAX_SEND_FRAGMENT		52

/* see tls1.h for macros based on these */
#ifndef OPENSSL_NO_TLSEXT
#define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB	53
#define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG	54
#define SSL_CTRL_SET_TLSEXT_HOSTNAME		55
#define SSL_CTRL_SET_TLSEXT_DEBUG_CB		56
#define SSL_CTRL_SET_TLSEXT_DEBUG_ARG		57
#define SSL_CTRL_GET_TLSEXT_TICKET_KEYS		58
#define SSL_CTRL_SET_TLSEXT_TICKET_KEYS		59
#define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT	60
#define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB	61
#define SSL_CTRL_SET_TLSEXT_OPAQUE_PRF_INPUT_CB_ARG 62
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB	63
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG	64
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE	65
#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS	66
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS	67
#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS	68
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS	69
#define SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP	70
#define SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP	71

#define SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB	72
#endif

#define DTLS_CTRL_GET_TIMEOUT		73
#define DTLS_CTRL_HANDLE_TIMEOUT	74
#define DTLS_CTRL_LISTEN			75

#define SSL_CTRL_GET_RI_SUPPORT			76
#define SSL_CTRL_CLEAR_OPTIONS			77
#define SSL_CTRL_CLEAR_MODE			78

#define DTLSv1_get_timeout(ssl, arg) \
	SSL_ctrl(ssl,DTLS_CTRL_GET_TIMEOUT,0, (void *)arg)
#define DTLSv1_handle_timeout(ssl) \
	SSL_ctrl(ssl,DTLS_CTRL_HANDLE_TIMEOUT,0, NULL)
#define DTLSv1_listen(ssl, peer) \
	SSL_ctrl(ssl,DTLS_CTRL_LISTEN,0, (void *)peer)

#define SSL_session_reused(ssl) \
	SSL_ctrl((ssl),SSL_CTRL_GET_SESSION_REUSED,0,NULL)
#define SSL_num_renegotiations(ssl) \
	SSL_ctrl((ssl),SSL_CTRL_GET_NUM_RENEGOTIATIONS,0,NULL)
#define SSL_clear_num_renegotiations(ssl) \
	SSL_ctrl((ssl),SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS,0,NULL)
#define SSL_total_renegotiations(ssl) \
	SSL_ctrl((ssl),SSL_CTRL_GET_TOTAL_RENEGOTIATIONS,0,NULL)

#define SSL_CTX_need_tmp_RSA(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_NEED_TMP_RSA,0,NULL)
#define SSL_CTX_set_tmp_rsa(ctx,rsa) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_RSA,0,(char *)rsa)
#define SSL_CTX_set_tmp_dh(ctx,dh) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_DH,0,(char *)dh)
#define SSL_CTX_set_tmp_ecdh(ctx,ecdh) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH,0,(char *)ecdh)

#define SSL_need_tmp_RSA(ssl) \
	SSL_ctrl(ssl,SSL_CTRL_NEED_TMP_RSA,0,NULL)
#define SSL_set_tmp_rsa(ssl,rsa) \
	SSL_ctrl(ssl,SSL_CTRL_SET_TMP_RSA,0,(char *)rsa)
#define SSL_set_tmp_dh(ssl,dh) \
	SSL_ctrl(ssl,SSL_CTRL_SET_TMP_DH,0,(char *)dh)
#define SSL_set_tmp_ecdh(ssl,ecdh) \
	SSL_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH,0,(char *)ecdh)

#define SSL_CTX_add_extra_chain_cert(ctx,x509) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_EXTRA_CHAIN_CERT,0,(char *)x509)

#ifndef OPENSSL_NO_BIO
BIO_METHOD *BIO_f_ssl(void);
BIO *BIO_new_ssl(SSL_CTX *ctx,int client);
BIO *BIO_new_ssl_connect(SSL_CTX *ctx);
BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx);
int BIO_ssl_copy_session_id(BIO *to,BIO *from);
void BIO_ssl_shutdown(BIO *ssl_bio);

#endif

int	SSL_CTX_set_cipher_list(SSL_CTX *,const char *str);
SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth);
void	SSL_CTX_free(SSL_CTX *);
long SSL_CTX_set_timeout(SSL_CTX *ctx,long t);
long SSL_CTX_get_timeout(const SSL_CTX *ctx);
X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *);
void SSL_CTX_set_cert_store(SSL_CTX *,X509_STORE *);
int SSL_want(const SSL *s);
int	SSL_clear(SSL *s);

void	SSL_CTX_flush_sessions(SSL_CTX *ctx,long tm);

const SSL_CIPHER *SSL_get_current_cipher(const SSL *s);
int	SSL_CIPHER_get_bits(const SSL_CIPHER *c,int *alg_bits);
char *	SSL_CIPHER_get_version(const SSL_CIPHER *c);
const char *	SSL_CIPHER_get_name(const SSL_CIPHER *c);

int	SSL_get_fd(const SSL *s);
int	SSL_get_rfd(const SSL *s);
int	SSL_get_wfd(const SSL *s);
const char  * SSL_get_cipher_list(const SSL *s,int n);
char *	SSL_get_shared_ciphers(const SSL *s, char *buf, int len);
int	SSL_get_read_ahead(const SSL * s);
int	SSL_pending(const SSL *s);
#ifndef OPENSSL_NO_SOCK
int	SSL_set_fd(SSL *s, int fd);
int	SSL_set_rfd(SSL *s, int fd);
int	SSL_set_wfd(SSL *s, int fd);
#endif
#ifndef OPENSSL_NO_BIO
void	SSL_set_bio(SSL *s, BIO *rbio,BIO *wbio);
BIO *	SSL_get_rbio(const SSL *s);
BIO *	SSL_get_wbio(const SSL *s);
#endif
int	SSL_set_cipher_list(SSL *s, const char *str);
void	SSL_set_read_ahead(SSL *s, int yes);
int	SSL_get_verify_mode(const SSL *s);
int	SSL_get_verify_depth(const SSL *s);
int	(*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *);
void	SSL_set_verify(SSL *s, int mode,
		       int (*callback)(int ok,X509_STORE_CTX *ctx));
void	SSL_set_verify_depth(SSL *s, int depth);
#ifndef OPENSSL_NO_RSA
int	SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
#endif
int	SSL_use_RSAPrivateKey_ASN1(SSL *ssl, unsigned char *d, long len);
int	SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey);
int	SSL_use_PrivateKey_ASN1(int pk,SSL *ssl, const unsigned char *d, long len);
int	SSL_use_certificate(SSL *ssl, X509 *x);
int	SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len);

#ifndef OPENSSL_NO_STDIO
int	SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type);
int	SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type);
int	SSL_use_certificate_file(SSL *ssl, const char *file, int type);
int	SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type);
int	SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type);
int	SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type);
int	SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file); /* PEM type */
STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
int	SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
					    const char *file);
#ifndef OPENSSL_SYS_VMS
#ifndef OPENSSL_SYS_MACINTOSH_CLASSIC /* XXXXX: Better scheme needed! [was: #ifndef MAC_OS_pre_X] */
int	SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
					   const char *dir);
#endif
#endif

#endif

void	SSL_load_error_strings(void );
const char *SSL_state_string(const SSL *s);
const char *SSL_rstate_string(const SSL *s);
const char *SSL_state_string_long(const SSL *s);
const char *SSL_rstate_string_long(const SSL *s);
long	SSL_SESSION_get_time(const SSL_SESSION *s);
long	SSL_SESSION_set_time(SSL_SESSION *s, long t);
long	SSL_SESSION_get_timeout(const SSL_SESSION *s);
long	SSL_SESSION_set_timeout(SSL_SESSION *s, long t);
void	SSL_copy_session_id(SSL *to,const SSL *from);

SSL_SESSION *SSL_SESSION_new(void);
const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s,
					unsigned int *len);
#ifndef OPENSSL_NO_FP_API
int	SSL_SESSION_print_fp(FILE *fp,const SSL_SESSION *ses);
#endif
#ifndef OPENSSL_NO_BIO
int	SSL_SESSION_print(BIO *fp,const SSL_SESSION *ses);
#endif
void	SSL_SESSION_free(SSL_SESSION *ses);
int	i2d_SSL_SESSION(SSL_SESSION *in,unsigned char **pp);
int	SSL_set_session(SSL *to, SSL_SESSION *session);
int	SSL_CTX_add_session(SSL_CTX *s, SSL_SESSION *c);
int	SSL_CTX_remove_session(SSL_CTX *,SSL_SESSION *c);
int	SSL_CTX_set_generate_session_id(SSL_CTX *, GEN_SESSION_CB);
int	SSL_set_generate_session_id(SSL *, GEN_SESSION_CB);
int	SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
					unsigned int id_len);
SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a,const unsigned char **pp,
			     long length);

#ifdef HEADER_X509_H
X509 *	SSL_get_peer_certificate(const SSL *s);
#endif

STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s);

int SSL_CTX_get_verify_mode(const SSL_CTX *ctx);
int SSL_CTX_get_verify_depth(const SSL_CTX *ctx);
int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *);
void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,
			int (*callback)(int, X509_STORE_CTX *));
void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth);
void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg);
#ifndef OPENSSL_NO_RSA
int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
#endif
int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d, long len);
int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey);
int SSL_CTX_use_PrivateKey_ASN1(int pk,SSL_CTX *ctx,
	const unsigned char *d, long len);
int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x);
int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, const unsigned char *d);

void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb);
void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u);

int SSL_CTX_check_private_key(const SSL_CTX *ctx);
int SSL_check_private_key(const SSL *ctx);

int	SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
				       unsigned int sid_ctx_len);

SSL *	SSL_new(SSL_CTX *ctx);
int	SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
				   unsigned int sid_ctx_len);

int SSL_CTX_set_purpose(SSL_CTX *s, int purpose);
int SSL_set_purpose(SSL *s, int purpose);
int SSL_CTX_set_trust(SSL_CTX *s, int trust);
int SSL_set_trust(SSL *s, int trust);

int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm);
int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm);

void	SSL_free(SSL *ssl);
int 	SSL_accept(SSL *ssl);
int 	SSL_connect(SSL *ssl);
int 	SSL_read(SSL *ssl,void *buf,int num);
int 	SSL_peek(SSL *ssl,void *buf,int num);
int 	SSL_write(SSL *ssl,const void *buf,int num);
long	SSL_ctrl(SSL *ssl,int cmd, long larg, void *parg);
long	SSL_callback_ctrl(SSL *, int, void (*)(void));
long	SSL_CTX_ctrl(SSL_CTX *ctx,int cmd, long larg, void *parg);
long	SSL_CTX_callback_ctrl(SSL_CTX *, int, void (*)(void));

int	SSL_get_error(const SSL *s,int ret_code);
const char *SSL_get_version(const SSL *s);

/* This sets the 'default' SSL version that SSL_new() will create */
int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth);

#ifndef OPENSSL_NO_SSL2
const SSL_METHOD *SSLv2_method(void);		/* SSLv2 */
const SSL_METHOD *SSLv2_server_method(void);	/* SSLv2 */
const SSL_METHOD *SSLv2_client_method(void);	/* SSLv2 */
#endif

const SSL_METHOD *SSLv3_method(void);		/* SSLv3 */
const SSL_METHOD *SSLv3_server_method(void);	/* SSLv3 */
const SSL_METHOD *SSLv3_client_method(void);	/* SSLv3 */

const SSL_METHOD *SSLv23_method(void);	/* SSLv3 but can rollback to v2 */
const SSL_METHOD *SSLv23_server_method(void);	/* SSLv3 but can rollback to v2 */
const SSL_METHOD *SSLv23_client_method(void);	/* SSLv3 but can rollback to v2 */

const SSL_METHOD *TLSv1_method(void);		/* TLSv1.0 */
const SSL_METHOD *TLSv1_server_method(void);	/* TLSv1.0 */
const SSL_METHOD *TLSv1_client_method(void);	/* TLSv1.0 */

const SSL_METHOD *DTLSv1_method(void);		/* DTLSv1.0 */
const SSL_METHOD *DTLSv1_server_method(void);	/* DTLSv1.0 */
const SSL_METHOD *DTLSv1_client_method(void);	/* DTLSv1.0 */

STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s);

int SSL_do_handshake(SSL *s);
int SSL_renegotiate(SSL *s);
int SSL_renegotiate_pending(SSL *s);
int SSL_shutdown(SSL *s);

const SSL_METHOD *SSL_get_ssl_method(SSL *s);
int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
const char *SSL_alert_type_string_long(int value);
const char *SSL_alert_type_string(int value);
const char *SSL_alert_desc_string_long(int value);
const char *SSL_alert_desc_string(int value);

void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list);
void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list);
STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s);
STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *s);
int SSL_add_client_CA(SSL *ssl,X509 *x);
int SSL_CTX_add_client_CA(SSL_CTX *ctx,X509 *x);

void SSL_set_connect_state(SSL *s);
void SSL_set_accept_state(SSL *s);

long SSL_get_default_timeout(const SSL *s);

int SSL_library_init(void );

char *SSL_CIPHER_description(const SSL_CIPHER *,char *buf,int size);
STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk);

SSL *SSL_dup(SSL *ssl);

X509 *SSL_get_certificate(const SSL *ssl);
/* EVP_PKEY */ struct evp_pkey_st *SSL_get_privatekey(SSL *ssl);

void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode);
int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx);
void SSL_set_quiet_shutdown(SSL *ssl,int mode);
int SSL_get_quiet_shutdown(const SSL *ssl);
void SSL_set_shutdown(SSL *ssl,int mode);
int SSL_get_shutdown(const SSL *ssl);
int SSL_version(const SSL *ssl);
int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx);
int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
	const char *CApath);
#define SSL_get0_session SSL_get_session /* just peek at pointer */
SSL_SESSION *SSL_get_session(const SSL *ssl);
SSL_SESSION *SSL_get1_session(SSL *ssl); /* obtain a reference count */
SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx);
void SSL_set_info_callback(SSL *ssl,
			   void (*cb)(const SSL *ssl,int type,int val));
void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl,int type,int val);
int SSL_state(const SSL *ssl);

void SSL_set_verify_result(SSL *ssl,long v);
long SSL_get_verify_result(const SSL *ssl);

int SSL_set_ex_data(SSL *ssl,int idx,void *data);
void *SSL_get_ex_data(const SSL *ssl,int idx);
int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
	CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);

int SSL_SESSION_set_ex_data(SSL_SESSION *ss,int idx,void *data);
void *SSL_SESSION_get_ex_data(const SSL_SESSION *ss,int idx);
int SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
	CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);

int SSL_CTX_set_ex_data(SSL_CTX *ssl,int idx,void *data);
void *SSL_CTX_get_ex_data(const SSL_CTX *ssl,int idx);
int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
	CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);

int SSL_get_ex_data_X509_STORE_CTX_idx(void );

#define SSL_CTX_sess_set_cache_size(ctx,t) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_SIZE,t,NULL)
#define SSL_CTX_sess_get_cache_size(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_SIZE,0,NULL)
#define SSL_CTX_set_session_cache_mode(ctx,m) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_SESS_CACHE_MODE,m,NULL)
#define SSL_CTX_get_session_cache_mode(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_SESS_CACHE_MODE,0,NULL)

#define SSL_CTX_get_default_read_ahead(ctx) SSL_CTX_get_read_ahead(ctx)
#define SSL_CTX_set_default_read_ahead(ctx,m) SSL_CTX_set_read_ahead(ctx,m)
#define SSL_CTX_get_read_ahead(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_READ_AHEAD,0,NULL)
#define SSL_CTX_set_read_ahead(ctx,m) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_READ_AHEAD,m,NULL)
#define SSL_CTX_get_max_cert_list(ctx) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
#define SSL_CTX_set_max_cert_list(ctx,m) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)
#define SSL_get_max_cert_list(ssl) \
	SSL_ctrl(ssl,SSL_CTRL_GET_MAX_CERT_LIST,0,NULL)
#define SSL_set_max_cert_list(ssl,m) \
	SSL_ctrl(ssl,SSL_CTRL_SET_MAX_CERT_LIST,m,NULL)

#define SSL_CTX_set_max_send_fragment(ctx,m) \
	SSL_CTX_ctrl(ctx,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)
#define SSL_set_max_send_fragment(ssl,m) \
	SSL_ctrl(ssl,SSL_CTRL_SET_MAX_SEND_FRAGMENT,m,NULL)

     /* NB: the keylength is only applicable when is_export is true */
#ifndef OPENSSL_NO_RSA
void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,
				  RSA *(*cb)(SSL *ssl,int is_export,
					     int keylength));

void SSL_set_tmp_rsa_callback(SSL *ssl,
				  RSA *(*cb)(SSL *ssl,int is_export,
					     int keylength));
#endif
#ifndef OPENSSL_NO_DH
void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
				 DH *(*dh)(SSL *ssl,int is_export,
					   int keylength));
void SSL_set_tmp_dh_callback(SSL *ssl,
				 DH *(*dh)(SSL *ssl,int is_export,
					   int keylength));
#endif
#ifndef OPENSSL_NO_ECDH
void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
				 EC_KEY *(*ecdh)(SSL *ssl,int is_export,
					   int keylength));
void SSL_set_tmp_ecdh_callback(SSL *ssl,
				 EC_KEY *(*ecdh)(SSL *ssl,int is_export,
					   int keylength));
#endif

#ifndef OPENSSL_NO_COMP
const COMP_METHOD *SSL_get_current_compression(SSL *s);
const COMP_METHOD *SSL_get_current_expansion(SSL *s);
const char *SSL_COMP_get_name(const COMP_METHOD *comp);
STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
int SSL_COMP_add_compression_method(int id,COMP_METHOD *cm);
#else
const void *SSL_get_current_compression(SSL *s);
const void *SSL_get_current_expansion(SSL *s);
const char *SSL_COMP_get_name(const void *comp);
void *SSL_COMP_get_compression_methods(void);
int SSL_COMP_add_compression_method(int id,void *cm);
#endif

/* TLS extensions functions */
int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len);

int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb,
				  void *arg);

/* Pre-shared secret session resumption functions */
int SSL_set_session_secret_cb(SSL *s, tls_session_secret_cb_fn tls_session_secret_cb, void *arg);

/* BEGIN ERROR CODES */
/* The following lines are auto generated by the script mkerr.pl. Any changes
 * made after this point may be overwritten when the script is next run.
 */
void ERR_load_SSL_strings(void);

/* Error codes for the SSL functions. */

/* Function codes. */
#define SSL_F_CLIENT_CERTIFICATE			 100
#define SSL_F_CLIENT_FINISHED				 167
#define SSL_F_CLIENT_HELLO				 101
#define SSL_F_CLIENT_MASTER_KEY				 102
#define SSL_F_D2I_SSL_SESSION				 103
#define SSL_F_DO_DTLS1_WRITE				 245
#define SSL_F_DO_SSL3_WRITE				 104
#define SSL_F_DTLS1_ACCEPT				 246
#define SSL_F_DTLS1_ADD_CERT_TO_BUF			 295
#define SSL_F_DTLS1_BUFFER_RECORD			 247
#define SSL_F_DTLS1_CLIENT_HELLO			 248
#define SSL_F_DTLS1_CONNECT				 249
#define SSL_F_DTLS1_ENC					 250
#define SSL_F_DTLS1_GET_HELLO_VERIFY			 251
#define SSL_F_DTLS1_GET_MESSAGE				 252
#define SSL_F_DTLS1_GET_MESSAGE_FRAGMENT		 253
#define SSL_F_DTLS1_GET_RECORD				 254
#define SSL_F_DTLS1_HANDLE_TIMEOUT			 297
#define SSL_F_DTLS1_OUTPUT_CERT_CHAIN			 255
#define SSL_F_DTLS1_PREPROCESS_FRAGMENT			 288
#define SSL_F_DTLS1_PROCESS_OUT_OF_SEQ_MESSAGE		 256
#define SSL_F_DTLS1_PROCESS_RECORD			 257
#define SSL_F_DTLS1_READ_BYTES				 258
#define SSL_F_DTLS1_READ_FAILED				 259
#define SSL_F_DTLS1_SEND_CERTIFICATE_REQUEST		 260
#define SSL_F_DTLS1_SEND_CLIENT_CERTIFICATE		 261
#define SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE		 262
#define SSL_F_DTLS1_SEND_CLIENT_VERIFY			 263
#define SSL_F_DTLS1_SEND_HELLO_VERIFY_REQUEST		 264
#define SSL_F_DTLS1_SEND_SERVER_CERTIFICATE		 265
#define SSL_F_DTLS1_SEND_SERVER_HELLO			 266
#define SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE		 267
#define SSL_F_DTLS1_WRITE_APP_DATA_BYTES		 268
#define SSL_F_GET_CLIENT_FINISHED			 105
#define SSL_F_GET_CLIENT_HELLO				 106
#define SSL_F_GET_CLIENT_MASTER_KEY			 107
#define SSL_F_GET_SERVER_FINISHED			 108
#define SSL_F_GET_SERVER_HELLO				 109
#define SSL_F_GET_SERVER_VERIFY				 110
#define SSL_F_I2D_SSL_SESSION				 111
#define SSL_F_READ_N					 112
#define SSL_F_REQUEST_CERTIFICATE			 113
#define SSL_F_SERVER_FINISH				 239
#define SSL_F_SERVER_HELLO				 114
#define SSL_F_SERVER_VERIFY				 240
#define SSL_F_SSL23_ACCEPT				 115
#define SSL_F_SSL23_CLIENT_HELLO			 116
#define SSL_F_SSL23_CONNECT				 117
#define SSL_F_SSL23_GET_CLIENT_HELLO			 118
#define SSL_F_SSL23_GET_SERVER_HELLO			 119
#define SSL_F_SSL23_PEEK				 237
#define SSL_F_SSL23_READ				 120
#define SSL_F_SSL23_WRITE				 121
#define SSL_F_SSL2_ACCEPT				 122
#define SSL_F_SSL2_CONNECT				 123
#define SSL_F_SSL2_ENC_INIT				 124
#define SSL_F_SSL2_GENERATE_KEY_MATERIAL		 241
#define SSL_F_SSL2_PEEK					 234
#define SSL_F_SSL2_READ					 125
#define SSL_F_SSL2_READ_INTERNAL			 236
#define SSL_F_SSL2_SET_CERTIFICATE			 126
#define SSL_F_SSL2_WRITE				 127
#define SSL_F_SSL3_ACCEPT				 128
#define SSL_F_SSL3_ADD_CERT_TO_BUF			 296
#define SSL_F_SSL3_CALLBACK_CTRL			 233
#define SSL_F_SSL3_CHANGE_CIPHER_STATE			 129
#define SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM		 130
#define SSL_F_SSL3_CLIENT_HELLO				 131
#define SSL_F_SSL3_CONNECT				 132
#define SSL_F_SSL3_CTRL					 213
#define SSL_F_SSL3_CTX_CTRL				 133
#define SSL_F_SSL3_DIGEST_CACHED_RECORDS		 293
#define SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC		 292
#define SSL_F_SSL3_ENC					 134
#define SSL_F_SSL3_GENERATE_KEY_BLOCK			 238
#define SSL_F_SSL3_GET_CERTIFICATE_REQUEST		 135
#define SSL_F_SSL3_GET_CERT_STATUS			 289
#define SSL_F_SSL3_GET_CERT_VERIFY			 136
#define SSL_F_SSL3_GET_CLIENT_CERTIFICATE		 137
#define SSL_F_SSL3_GET_CLIENT_HELLO			 138
#define SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE		 139
#define SSL_F_SSL3_GET_FINISHED				 140
#define SSL_F_SSL3_GET_KEY_EXCHANGE			 141
#define SSL_F_SSL3_GET_MESSAGE				 142
#define SSL_F_SSL3_GET_NEW_SESSION_TICKET		 283
#define SSL_F_SSL3_GET_RECORD				 143
#define SSL_F_SSL3_GET_SERVER_CERTIFICATE		 144
#define SSL_F_SSL3_GET_SERVER_DONE			 145
#define SSL_F_SSL3_GET_SERVER_HELLO			 146
#define SSL_F_SSL3_HANDSHAKE_MAC			 285
#define SSL_F_SSL3_NEW_SESSION_TICKET			 287
#define SSL_F_SSL3_OUTPUT_CERT_CHAIN			 147
#define SSL_F_SSL3_PEEK					 235
#define SSL_F_SSL3_READ_BYTES				 148
#define SSL_F_SSL3_READ_N				 149
#define SSL_F_SSL3_SEND_CERTIFICATE_REQUEST		 150
#define SSL_F_SSL3_SEND_CLIENT_CERTIFICATE		 151
#define SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE		 152
#define SSL_F_SSL3_SEND_CLIENT_VERIFY			 153
#define SSL_F_SSL3_SEND_SERVER_CERTIFICATE		 154
#define SSL_F_SSL3_SEND_SERVER_HELLO			 242
#define SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE		 155
#define SSL_F_SSL3_SETUP_KEY_BLOCK			 157
#define SSL_F_SSL3_SETUP_READ_BUFFER			 156
#define SSL_F_SSL3_SETUP_WRITE_BUFFER			 291
#define SSL_F_SSL3_WRITE_BYTES				 158
#define SSL_F_SSL3_WRITE_PENDING			 159
#define SSL_F_SSL_ADD_CLIENTHELLO_RENEGOTIATE_EXT	 298
#define SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT		 277
#define SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK	 215
#define SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK	 216
#define SSL_F_SSL_ADD_SERVERHELLO_RENEGOTIATE_EXT	 299
#define SSL_F_SSL_ADD_SERVERHELLO_TLSEXT		 278
#define SSL_F_SSL_BAD_METHOD				 160
#define SSL_F_SSL_BYTES_TO_CIPHER_LIST			 161
#define SSL_F_SSL_CERT_DUP				 221
#define SSL_F_SSL_CERT_INST				 222
#define SSL_F_SSL_CERT_INSTANTIATE			 214
#define SSL_F_SSL_CERT_NEW				 162
#define SSL_F_SSL_CHECK_PRIVATE_KEY			 163
#define SSL_F_SSL_CHECK_SERVERHELLO_TLSEXT		 280
#define SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG		 279
#define SSL_F_SSL_CIPHER_PROCESS_RULESTR		 230
#define SSL_F_SSL_CIPHER_STRENGTH_SORT			 231
#define SSL_F_SSL_CLEAR					 164
#define SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD		 165
#define SSL_F_SSL_CREATE_CIPHER_LIST			 166
#define SSL_F_SSL_CTRL					 232
#define SSL_F_SSL_CTX_CHECK_PRIVATE_KEY			 168
#define SSL_F_SSL_CTX_NEW				 169
#define SSL_F_SSL_CTX_SET_CIPHER_LIST			 269
#define SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE		 290
#define SSL_F_SSL_CTX_SET_PURPOSE			 226
#define SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT		 219
#define SSL_F_SSL_CTX_SET_SSL_VERSION			 170
#define SSL_F_SSL_CTX_SET_TRUST				 229
#define SSL_F_SSL_CTX_USE_CERTIFICATE			 171
#define SSL_F_SSL_CTX_USE_CERTIFICATE_ASN1		 172
#define SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE	 220
#define SSL_F_SSL_CTX_USE_CERTIFICATE_FILE		 173
#define SSL_F_SSL_CTX_USE_PRIVATEKEY			 174
#define SSL_F_SSL_CTX_USE_PRIVATEKEY_ASN1		 175
#define SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE		 176
#define SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT		 272
#define SSL_F_SSL_CTX_USE_RSAPRIVATEKEY			 177
#define SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_ASN1		 178
#define SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE		 179
#define SSL_F_SSL_DO_HANDSHAKE				 180
#define SSL_F_SSL_GET_NEW_SESSION			 181
#define SSL_F_SSL_GET_PREV_SESSION			 217
#define SSL_F_SSL_GET_SERVER_SEND_CERT			 182
#define SSL_F_SSL_GET_SIGN_PKEY				 183
#define SSL_F_SSL_INIT_WBIO_BUFFER			 184
#define SSL_F_SSL_LOAD_CLIENT_CA_FILE			 185
#define SSL_F_SSL_NEW					 186
#define SSL_F_SSL_PARSE_CLIENTHELLO_RENEGOTIATE_EXT	 300
#define SSL_F_SSL_PARSE_CLIENTHELLO_TLSEXT		 302
#define SSL_F_SSL_PARSE_SERVERHELLO_RENEGOTIATE_EXT	 301
#define SSL_F_SSL_PARSE_SERVERHELLO_TLSEXT		 303
#define SSL_F_SSL_PEEK					 270
#define SSL_F_SSL_PREPARE_CLIENTHELLO_TLSEXT		 281
#define SSL_F_SSL_PREPARE_SERVERHELLO_TLSEXT		 282
#define SSL_F_SSL_READ					 223
#define SSL_F_SSL_RSA_PRIVATE_DECRYPT			 187
#define SSL_F_SSL_RSA_PUBLIC_ENCRYPT			 188
#define SSL_F_SSL_SESSION_NEW				 189
#define SSL_F_SSL_SESSION_PRINT_FP			 190
#define SSL_F_SSL_SESS_CERT_NEW				 225
#define SSL_F_SSL_SET_CERT				 191
#define SSL_F_SSL_SET_CIPHER_LIST			 271
#define SSL_F_SSL_SET_FD				 192
#define SSL_F_SSL_SET_PKEY				 193
#define SSL_F_SSL_SET_PURPOSE				 227
#define SSL_F_SSL_SET_RFD				 194
#define SSL_F_SSL_SET_SESSION				 195
#define SSL_F_SSL_SET_SESSION_ID_CONTEXT		 218
#define SSL_F_SSL_SET_SESSION_TICKET_EXT		 294
#define SSL_F_SSL_SET_TRUST				 228
#define SSL_F_SSL_SET_WFD				 196
#define SSL_F_SSL_SHUTDOWN				 224
#define SSL_F_SSL_UNDEFINED_CONST_FUNCTION		 243
#define SSL_F_SSL_UNDEFINED_FUNCTION			 197
#define SSL_F_SSL_UNDEFINED_VOID_FUNCTION		 244
#define SSL_F_SSL_USE_CERTIFICATE			 198
#define SSL_F_SSL_USE_CERTIFICATE_ASN1			 199
#define SSL_F_SSL_USE_CERTIFICATE_FILE			 200
#define SSL_F_SSL_USE_PRIVATEKEY			 201
#define SSL_F_SSL_USE_PRIVATEKEY_ASN1			 202
#define SSL_F_SSL_USE_PRIVATEKEY_FILE			 203
#define SSL_F_SSL_USE_PSK_IDENTITY_HINT			 273
#define SSL_F_SSL_USE_RSAPRIVATEKEY			 204
#define SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1		 205
#define SSL_F_SSL_USE_RSAPRIVATEKEY_FILE		 206
#define SSL_F_SSL_VERIFY_CERT_CHAIN			 207
#define SSL_F_SSL_WRITE					 208
#define SSL_F_TLS1_CERT_VERIFY_MAC			 286
#define SSL_F_TLS1_CHANGE_CIPHER_STATE			 209
#define SSL_F_TLS1_CHECK_SERVERHELLO_TLSEXT		 274
#define SSL_F_TLS1_ENC					 210
#define SSL_F_TLS1_PREPARE_CLIENTHELLO_TLSEXT		 275
#define SSL_F_TLS1_PREPARE_SERVERHELLO_TLSEXT		 276
#define SSL_F_TLS1_PRF					 284
#define SSL_F_TLS1_SETUP_KEY_BLOCK			 211
#define SSL_F_WRITE_PENDING				 212

/* Reason codes. */
#define SSL_R_APP_DATA_IN_HANDSHAKE			 100
#define SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT 272
#define SSL_R_BAD_ALERT_RECORD				 101
#define SSL_R_BAD_AUTHENTICATION_TYPE			 102
#define SSL_R_BAD_CHANGE_CIPHER_SPEC			 103
#define SSL_R_BAD_CHECKSUM				 104
#define SSL_R_BAD_DATA_RETURNED_BY_CALLBACK		 106
#define SSL_R_BAD_DECOMPRESSION				 107
#define SSL_R_BAD_DH_G_LENGTH				 108
#define SSL_R_BAD_DH_PUB_KEY_LENGTH			 109
#define SSL_R_BAD_DH_P_LENGTH				 110
#define SSL_R_BAD_DIGEST_LENGTH				 111
#define SSL_R_BAD_DSA_SIGNATURE				 112
#define SSL_R_BAD_ECC_CERT				 304
#define SSL_R_BAD_ECDSA_SIGNATURE			 305
#define SSL_R_BAD_ECPOINT				 306
#define SSL_R_BAD_HANDSHAKE_LENGTH			 332
#define SSL_R_BAD_HELLO_REQUEST				 105
#define SSL_R_BAD_LENGTH				 271
#define SSL_R_BAD_MAC_DECODE				 113
#define SSL_R_BAD_MAC_LENGTH				 333
#define SSL_R_BAD_MESSAGE_TYPE				 114
#define SSL_R_BAD_PACKET_LENGTH				 115
#define SSL_R_BAD_PROTOCOL_VERSION_NUMBER		 116
#define SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH		 316
#define SSL_R_BAD_RESPONSE_ARGUMENT			 117
#define SSL_R_BAD_RSA_DECRYPT				 118
#define SSL_R_BAD_RSA_ENCRYPT				 119
#define SSL_R_BAD_RSA_E_LENGTH				 120
#define SSL_R_BAD_RSA_MODULUS_LENGTH			 121
#define SSL_R_BAD_RSA_SIGNATURE				 122
#define SSL_R_BAD_SIGNATURE				 123
#define SSL_R_BAD_SSL_FILETYPE				 124
#define SSL_R_BAD_SSL_SESSION_ID_LENGTH			 125
#define SSL_R_BAD_STATE					 126
#define SSL_R_BAD_WRITE_RETRY				 127
#define SSL_R_BIO_NOT_SET				 128
#define SSL_R_BLOCK_CIPHER_PAD_IS_WRONG			 129
#define SSL_R_BN_LIB					 130
#define SSL_R_CA_DN_LENGTH_MISMATCH			 131
#define SSL_R_CA_DN_TOO_LONG				 132
#define SSL_R_CCS_RECEIVED_EARLY			 133
#define SSL_R_CERTIFICATE_VERIFY_FAILED			 134
#define SSL_R_CERT_LENGTH_MISMATCH			 135
#define SSL_R_CHALLENGE_IS_DIFFERENT			 136
#define SSL_R_CIPHER_CODE_WRONG_LENGTH			 137
#define SSL_R_CIPHER_OR_HASH_UNAVAILABLE		 138
#define SSL_R_CIPHER_TABLE_SRC_ERROR			 139
#define SSL_R_CLIENTHELLO_TLSEXT			 226
#define SSL_R_COMPRESSED_LENGTH_TOO_LONG		 140
#define SSL_R_COMPRESSION_DISABLED			 343
#define SSL_R_COMPRESSION_FAILURE			 141
#define SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE	 307
#define SSL_R_COMPRESSION_LIBRARY_ERROR			 142
#define SSL_R_CONNECTION_ID_IS_DIFFERENT		 143
#define SSL_R_CONNECTION_TYPE_NOT_SET			 144
#define SSL_R_COOKIE_MISMATCH				 308
#define SSL_R_DATA_BETWEEN_CCS_AND_FINISHED		 145
#define SSL_R_DATA_LENGTH_TOO_LONG			 146
#define SSL_R_DECRYPTION_FAILED				 147
#define SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC	 281
#define SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG		 148
#define SSL_R_DIGEST_CHECK_FAILED			 149
#define SSL_R_DTLS_MESSAGE_TOO_BIG			 334
#define SSL_R_DUPLICATE_COMPRESSION_ID			 309
#define SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT		 317
#define SSL_R_ECC_CERT_NOT_FOR_SIGNING			 318
#define SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE	 322
#define SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE	 323
#define SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER		 310
#define SSL_R_ENCRYPTED_LENGTH_TOO_LONG			 150
#define SSL_R_ERROR_GENERATING_TMP_RSA_KEY		 282
#define SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST		 151
#define SSL_R_EXCESSIVE_MESSAGE_SIZE			 152
#define SSL_R_EXTRA_DATA_IN_MESSAGE			 153
#define SSL_R_GOT_A_FIN_BEFORE_A_CCS			 154
#define SSL_R_HTTPS_PROXY_REQUEST			 155
#define SSL_R_HTTP_REQUEST				 156
#define SSL_R_ILLEGAL_PADDING				 283
#define SSL_R_INCONSISTENT_COMPRESSION			 340
#define SSL_R_INVALID_CHALLENGE_LENGTH			 158
#define SSL_R_INVALID_COMMAND				 280
#define SSL_R_INVALID_COMPRESSION_ALGORITHM		 341
#define SSL_R_INVALID_PURPOSE				 278
#define SSL_R_INVALID_STATUS_RESPONSE			 328
#define SSL_R_INVALID_TICKET_KEYS_LENGTH		 325
#define SSL_R_INVALID_TRUST				 279
#define SSL_R_KEY_ARG_TOO_LONG				 284
#define SSL_R_KRB5					 285
#define SSL_R_KRB5_C_CC_PRINC				 286
#define SSL_R_KRB5_C_GET_CRED				 287
#define SSL_R_KRB5_C_INIT				 288
#define SSL_R_KRB5_C_MK_REQ				 289
#define SSL_R_KRB5_S_BAD_TICKET				 290
#define SSL_R_KRB5_S_INIT				 291
#define SSL_R_KRB5_S_RD_REQ				 292
#define SSL_R_KRB5_S_TKT_EXPIRED			 293
#define SSL_R_KRB5_S_TKT_NYV				 294
#define SSL_R_KRB5_S_TKT_SKEW				 295
#define SSL_R_LENGTH_MISMATCH				 159
#define SSL_R_LENGTH_TOO_SHORT				 160
#define SSL_R_LIBRARY_BUG				 274
#define SSL_R_LIBRARY_HAS_NO_CIPHERS			 161
#define SSL_R_MESSAGE_TOO_LONG				 296
#define SSL_R_MISSING_DH_DSA_CERT			 162
#define SSL_R_MISSING_DH_KEY				 163
#define SSL_R_MISSING_DH_RSA_CERT			 164
#define SSL_R_MISSING_DSA_SIGNING_CERT			 165
#define SSL_R_MISSING_EXPORT_TMP_DH_KEY			 166
#define SSL_R_MISSING_EXPORT_TMP_RSA_KEY		 167
#define SSL_R_MISSING_RSA_CERTIFICATE			 168
#define SSL_R_MISSING_RSA_ENCRYPTING_CERT		 169
#define SSL_R_MISSING_RSA_SIGNING_CERT			 170
#define SSL_R_MISSING_TMP_DH_KEY			 171
#define SSL_R_MISSING_TMP_ECDH_KEY			 311
#define SSL_R_MISSING_TMP_RSA_KEY			 172
#define SSL_R_MISSING_TMP_RSA_PKEY			 173
#define SSL_R_MISSING_VERIFY_MESSAGE			 174
#define SSL_R_NON_SSLV2_INITIAL_PACKET			 175
#define SSL_R_NO_CERTIFICATES_RETURNED			 176
#define SSL_R_NO_CERTIFICATE_ASSIGNED			 177
#define SSL_R_NO_CERTIFICATE_RETURNED			 178
#define SSL_R_NO_CERTIFICATE_SET			 179
#define SSL_R_NO_CERTIFICATE_SPECIFIED			 180
#define SSL_R_NO_CIPHERS_AVAILABLE			 181
#define SSL_R_NO_CIPHERS_PASSED				 182
#define SSL_R_NO_CIPHERS_SPECIFIED			 183
#define SSL_R_NO_CIPHER_LIST				 184
#define SSL_R_NO_CIPHER_MATCH				 185
#define SSL_R_NO_CLIENT_CERT_METHOD			 331
#define SSL_R_NO_CLIENT_CERT_RECEIVED			 186
#define SSL_R_NO_COMPRESSION_SPECIFIED			 187
#define SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER		 330
#define SSL_R_NO_METHOD_SPECIFIED			 188
#define SSL_R_NO_PRIVATEKEY				 189
#define SSL_R_NO_PRIVATE_KEY_ASSIGNED			 190
#define SSL_R_NO_PROTOCOLS_AVAILABLE			 191
#define SSL_R_NO_PUBLICKEY				 192
#define SSL_R_NO_RENEGOTIATION				 339
#define SSL_R_NO_REQUIRED_DIGEST			 324
#define SSL_R_NO_SHARED_CIPHER				 193
#define SSL_R_NO_VERIFY_CALLBACK			 194
#define SSL_R_NULL_SSL_CTX				 195
#define SSL_R_NULL_SSL_METHOD_PASSED			 196
#define SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED		 197
#define SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED 344
#define SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE		 297
#define SSL_R_OPAQUE_PRF_INPUT_TOO_LONG			 327
#define SSL_R_PACKET_LENGTH_TOO_LONG			 198
#define SSL_R_PARSE_TLSEXT				 227
#define SSL_R_PATH_TOO_LONG				 270
#define SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE		 199
#define SSL_R_PEER_ERROR				 200
#define SSL_R_PEER_ERROR_CERTIFICATE			 201
#define SSL_R_PEER_ERROR_NO_CERTIFICATE			 202
#define SSL_R_PEER_ERROR_NO_CIPHER			 203
#define SSL_R_PEER_ERROR_UNSUPPORTED_CERTIFICATE_TYPE	 204
#define SSL_R_PRE_MAC_LENGTH_TOO_LONG			 205
#define SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS		 206
#define SSL_R_PROTOCOL_IS_SHUTDOWN			 207
#define SSL_R_PSK_IDENTITY_NOT_FOUND			 223
#define SSL_R_PSK_NO_CLIENT_CB				 224
#define SSL_R_PSK_NO_SERVER_CB				 225
#define SSL_R_PUBLIC_KEY_ENCRYPT_ERROR			 208
#define SSL_R_PUBLIC_KEY_IS_NOT_RSA			 209
#define SSL_R_PUBLIC_KEY_NOT_RSA			 210
#define SSL_R_READ_BIO_NOT_SET				 211
#define SSL_R_READ_TIMEOUT_EXPIRED			 312
#define SSL_R_READ_WRONG_PACKET_TYPE			 212
#define SSL_R_RECORD_LENGTH_MISMATCH			 213
#define SSL_R_RECORD_TOO_LARGE				 214
#define SSL_R_RECORD_TOO_SMALL				 298
#define SSL_R_RENEGOTIATE_EXT_TOO_LONG			 335
#define SSL_R_RENEGOTIATION_ENCODING_ERR		 336
#define SSL_R_RENEGOTIATION_MISMATCH			 337
#define SSL_R_REQUIRED_CIPHER_MISSING			 215
#define SSL_R_REQUIRED_COMPRESSSION_ALGORITHM_MISSING	 342
#define SSL_R_REUSE_CERT_LENGTH_NOT_ZERO		 216
#define SSL_R_REUSE_CERT_TYPE_NOT_ZERO			 217
#define SSL_R_REUSE_CIPHER_LIST_NOT_ZERO		 218
#define SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING		 345
#define SSL_R_SERVERHELLO_TLSEXT			 275
#define SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED		 277
#define SSL_R_SHORT_READ				 219
#define SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE	 220
#define SSL_R_SSL23_DOING_SESSION_ID_REUSE		 221
#define SSL_R_SSL2_CONNECTION_ID_TOO_LONG		 299
#define SSL_R_SSL3_EXT_INVALID_ECPOINTFORMAT		 321
#define SSL_R_SSL3_EXT_INVALID_SERVERNAME		 319
#define SSL_R_SSL3_EXT_INVALID_SERVERNAME_TYPE		 320
#define SSL_R_SSL3_SESSION_ID_TOO_LONG			 300
#define SSL_R_SSL3_SESSION_ID_TOO_SHORT			 222
#define SSL_R_SSLV3_ALERT_BAD_CERTIFICATE		 1042
#define SSL_R_SSLV3_ALERT_BAD_RECORD_MAC		 1020
#define SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED		 1045
#define SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED		 1044
#define SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN		 1046
#define SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE		 1030
#define SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE		 1040
#define SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER		 1047
#define SSL_R_SSLV3_ALERT_NO_CERTIFICATE		 1041
#define SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE		 1010
#define SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE	 1043
#define SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION	 228
#define SSL_R_SSL_HANDSHAKE_FAILURE			 229
#define SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS		 230
#define SSL_R_SSL_SESSION_ID_CALLBACK_FAILED		 301
#define SSL_R_SSL_SESSION_ID_CONFLICT			 302
#define SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG		 273
#define SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH		 303
#define SSL_R_SSL_SESSION_ID_IS_DIFFERENT		 231
#define SSL_R_TLSV1_ALERT_ACCESS_DENIED			 1049
#define SSL_R_TLSV1_ALERT_DECODE_ERROR			 1050
#define SSL_R_TLSV1_ALERT_DECRYPTION_FAILED		 1021
#define SSL_R_TLSV1_ALERT_DECRYPT_ERROR			 1051
#define SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION		 1060
#define SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY		 1071
#define SSL_R_TLSV1_ALERT_INTERNAL_ERROR		 1080
#define SSL_R_TLSV1_ALERT_NO_RENEGOTIATION		 1100
#define SSL_R_TLSV1_ALERT_PROTOCOL_VERSION		 1070
#define SSL_R_TLSV1_ALERT_RECORD_OVERFLOW		 1022
#define SSL_R_TLSV1_ALERT_UNKNOWN_CA			 1048
#define SSL_R_TLSV1_ALERT_USER_CANCELLED		 1090
#define SSL_R_TLSV1_BAD_CERTIFICATE_HASH_VALUE		 1114
#define SSL_R_TLSV1_BAD_CERTIFICATE_STATUS_RESPONSE	 1113
#define SSL_R_TLSV1_CERTIFICATE_UNOBTAINABLE		 1111
#define SSL_R_TLSV1_UNRECOGNIZED_NAME			 1112
#define SSL_R_TLSV1_UNSUPPORTED_EXTENSION		 1110
#define SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER	 232
#define SSL_R_TLS_INVALID_ECPOINTFORMAT_LIST		 157
#define SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST 233
#define SSL_R_TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG	 234
#define SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER		 235
#define SSL_R_UNABLE_TO_DECODE_DH_CERTS			 236
#define SSL_R_UNABLE_TO_DECODE_ECDH_CERTS		 313
#define SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY		 237
#define SSL_R_UNABLE_TO_FIND_DH_PARAMETERS		 238
#define SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS		 314
#define SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS	 239
#define SSL_R_UNABLE_TO_FIND_SSL_METHOD			 240
#define SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES		 241
#define SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES		 242
#define SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES		 243
#define SSL_R_UNEXPECTED_MESSAGE			 244
#define SSL_R_UNEXPECTED_RECORD				 245
#define SSL_R_UNINITIALIZED				 276
#define SSL_R_UNKNOWN_ALERT_TYPE			 246
#define SSL_R_UNKNOWN_CERTIFICATE_TYPE			 247
#define SSL_R_UNKNOWN_CIPHER_RETURNED			 248
#define SSL_R_UNKNOWN_CIPHER_TYPE			 249
#define SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE			 250
#define SSL_R_UNKNOWN_PKEY_TYPE				 251
#define SSL_R_UNKNOWN_PROTOCOL				 252
#define SSL_R_UNKNOWN_REMOTE_ERROR_TYPE			 253
#define SSL_R_UNKNOWN_SSL_VERSION			 254
#define SSL_R_UNKNOWN_STATE				 255
#define SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED	 338
#define SSL_R_UNSUPPORTED_CIPHER			 256
#define SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM		 257
#define SSL_R_UNSUPPORTED_DIGEST_TYPE			 326
#define SSL_R_UNSUPPORTED_ELLIPTIC_CURVE		 315
#define SSL_R_UNSUPPORTED_PROTOCOL			 258
#define SSL_R_UNSUPPORTED_SSL_VERSION			 259
#define SSL_R_UNSUPPORTED_STATUS_TYPE			 329
#define SSL_R_WRITE_BIO_NOT_SET				 260
#define SSL_R_WRONG_CIPHER_RETURNED			 261
#define SSL_R_WRONG_MESSAGE_TYPE			 262
#define SSL_R_WRONG_NUMBER_OF_KEY_BITS			 263
#define SSL_R_WRONG_SIGNATURE_LENGTH			 264
#define SSL_R_WRONG_SIGNATURE_SIZE			 265
#define SSL_R_WRONG_SSL_VERSION				 266
#define SSL_R_WRONG_VERSION_NUMBER			 267
#define SSL_R_X509_LIB					 268
#define SSL_R_X509_VERIFICATION_SETUP_PROBLEMS		 269

#ifdef  __cplusplus
}
#endif
#endif

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Written By
Chief Technology Officer Apriorit Inc.
United States United States
ApriorIT is a software research and development company specializing in cybersecurity and data management technology engineering. We work for a broad range of clients from Fortune 500 technology leaders to small innovative startups building unique solutions.

As Apriorit offers integrated research&development services for the software projects in such areas as endpoint security, network security, data security, embedded Systems, and virtualization, we have strong kernel and driver development skills, huge system programming expertise, and are reals fans of research projects.

Our specialty is reverse engineering, we apply it for security testing and security-related projects.

A separate department of Apriorit works on large-scale business SaaS solutions, handling tasks from business analysis, data architecture design, and web development to performance optimization and DevOps.

Official site: https://www.apriorit.com
Clutch profile: https://clutch.co/profile/apriorit
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Written By
Software Developer (Senior) ApriorIT
Ukraine Ukraine
Senior Software Developer of Apriorit Inc.
My favorite tasks are multithreading, networking and WDK.

... But in free time : beer, meat, travelling and photo...)

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