xref: /external/chromium_org/third_party/boringssl/src/ssl/s3_lib.c

/* 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.
 *
 * Portions of the attached software ("Contribution") are developed by
 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
 *
 * The Contribution is licensed pursuant to the OpenSSL open source
 * license provided above.
 *
 * ECC cipher suite support in OpenSSL originally written by
 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
 *
 */
/* ====================================================================
 * 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. */

#include <assert.h>
#include <stdio.h>

#include <openssl/buf.h>
#include <openssl/dh.h>
#include <openssl/md5.h>
#include <openssl/mem.h>
#include <openssl/obj.h>

#include "ssl_locl.h"

#define SSL3_NUM_CIPHERS	(sizeof(ssl3_ciphers)/sizeof(SSL_CIPHER))

/* FIXED_NONCE_LEN is a macro that results in the correct value to set the
 * fixed nonce length in SSL_CIPHER.algorithms2. It's the inverse of
 * SSL_CIPHER_AEAD_FIXED_NONCE_LEN. */
#define FIXED_NONCE_LEN(x) ((x/2)<<24)

/* list of available SSLv3 ciphers (sorted by id) */
const SSL_CIPHER ssl3_ciphers[]={

/* The RSA ciphers */
/* Cipher 04 */
	{
	1,
	SSL3_TXT_RSA_RC4_128_MD5,
	SSL3_CK_RSA_RC4_128_MD5,
	SSL_kRSA,
	SSL_aRSA,
	SSL_RC4,
	SSL_MD5,
	SSL_SSLV3,
	SSL_MEDIUM,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF|SSL_CIPHER_ALGORITHM2_STATEFUL_AEAD,
	128,
	128,
	},

/* Cipher 05 */
	{
	1,
	SSL3_TXT_RSA_RC4_128_SHA,
	SSL3_CK_RSA_RC4_128_SHA,
	SSL_kRSA,
	SSL_aRSA,
	SSL_RC4,
	SSL_SHA1,
	SSL_SSLV3,
	SSL_MEDIUM,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

/* Cipher 0A */
	{
	1,
	SSL3_TXT_RSA_DES_192_CBC3_SHA,
	SSL3_CK_RSA_DES_192_CBC3_SHA,
	SSL_kRSA,
	SSL_aRSA,
	SSL_3DES,
	SSL_SHA1,
	SSL_SSLV3,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	112,
	168,
	},

/* The Ephemeral DH ciphers */

/* Cipher 18 */
	{
	1,
	SSL3_TXT_ADH_RC4_128_MD5,
	SSL3_CK_ADH_RC4_128_MD5,
	SSL_kEDH,
	SSL_aNULL,
	SSL_RC4,
	SSL_MD5,
	SSL_SSLV3,
	SSL_MEDIUM,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

/* New AES ciphersuites */
/* Cipher 2F */
	{
	1,
	TLS1_TXT_RSA_WITH_AES_128_SHA,
	TLS1_CK_RSA_WITH_AES_128_SHA,
	SSL_kRSA,
	SSL_aRSA,
	SSL_AES128,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},
/* Cipher 33 */
	{
	1,
	TLS1_TXT_DHE_RSA_WITH_AES_128_SHA,
	TLS1_CK_DHE_RSA_WITH_AES_128_SHA,
	SSL_kEDH,
	SSL_aRSA,
	SSL_AES128,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},
/* Cipher 34 */
	{
	1,
	TLS1_TXT_ADH_WITH_AES_128_SHA,
	TLS1_CK_ADH_WITH_AES_128_SHA,
	SSL_kEDH,
	SSL_aNULL,
	SSL_AES128,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

/* Cipher 35 */
	{
	1,
	TLS1_TXT_RSA_WITH_AES_256_SHA,
	TLS1_CK_RSA_WITH_AES_256_SHA,
	SSL_kRSA,
	SSL_aRSA,
	SSL_AES256,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	256,
	256,
	},

/* Cipher 39 */
	{
	1,
	TLS1_TXT_DHE_RSA_WITH_AES_256_SHA,
	TLS1_CK_DHE_RSA_WITH_AES_256_SHA,
	SSL_kEDH,
	SSL_aRSA,
	SSL_AES256,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	256,
	256,
	},

	/* Cipher 3A */
	{
	1,
	TLS1_TXT_ADH_WITH_AES_256_SHA,
	TLS1_CK_ADH_WITH_AES_256_SHA,
	SSL_kEDH,
	SSL_aNULL,
	SSL_AES256,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	256,
	256,
	},

	/* TLS v1.2 ciphersuites */
	/* Cipher 3C */
	{
	1,
	TLS1_TXT_RSA_WITH_AES_128_SHA256,
	TLS1_CK_RSA_WITH_AES_128_SHA256,
	SSL_kRSA,
	SSL_aRSA,
	SSL_AES128,
	SSL_SHA256,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher 3D */
	{
	1,
	TLS1_TXT_RSA_WITH_AES_256_SHA256,
	TLS1_CK_RSA_WITH_AES_256_SHA256,
	SSL_kRSA,
	SSL_aRSA,
	SSL_AES256,
	SSL_SHA256,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	256,
	256,
	},


	/* TLS v1.2 ciphersuites */
	/* Cipher 67 */
	{
	1,
	TLS1_TXT_DHE_RSA_WITH_AES_128_SHA256,
	TLS1_CK_DHE_RSA_WITH_AES_128_SHA256,
	SSL_kEDH,
	SSL_aRSA,
	SSL_AES128,
	SSL_SHA256,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher 6B */
	{
	1,
	TLS1_TXT_DHE_RSA_WITH_AES_256_SHA256,
	TLS1_CK_DHE_RSA_WITH_AES_256_SHA256,
	SSL_kEDH,
	SSL_aRSA,
	SSL_AES256,
	SSL_SHA256,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	256,
	256,
	},

	/* Cipher 6C */
	{
	1,
	TLS1_TXT_ADH_WITH_AES_128_SHA256,
	TLS1_CK_ADH_WITH_AES_128_SHA256,
	SSL_kEDH,
	SSL_aNULL,
	SSL_AES128,
	SSL_SHA256,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher 6D */
	{
	1,
	TLS1_TXT_ADH_WITH_AES_256_SHA256,
	TLS1_CK_ADH_WITH_AES_256_SHA256,
	SSL_kEDH,
	SSL_aNULL,
	SSL_AES256,
	SSL_SHA256,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	256,
	256,
	},


	/* Cipher 8A */
	{
	1,
	TLS1_TXT_PSK_WITH_RC4_128_SHA,
	TLS1_CK_PSK_WITH_RC4_128_SHA,
	SSL_kPSK,
	SSL_aPSK,
	SSL_RC4,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_MEDIUM,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher 8C */
	{
	1,
	TLS1_TXT_PSK_WITH_AES_128_CBC_SHA,
	TLS1_CK_PSK_WITH_AES_128_CBC_SHA,
	SSL_kPSK,
	SSL_aPSK,
	SSL_AES128,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher 8D */
	{
	1,
	TLS1_TXT_PSK_WITH_AES_256_CBC_SHA,
	TLS1_CK_PSK_WITH_AES_256_CBC_SHA,
	SSL_kPSK,
	SSL_aPSK,
	SSL_AES256,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	256,
	256,
	},

	/* GCM ciphersuites from RFC5288 */

	/* Cipher 9C */
	{
	1,
	TLS1_TXT_RSA_WITH_AES_128_GCM_SHA256,
	TLS1_CK_RSA_WITH_AES_128_GCM_SHA256,
	SSL_kRSA,
	SSL_aRSA,
	SSL_AES128GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	128,
	128,
	},

	/* Cipher 9D */
	{
	1,
	TLS1_TXT_RSA_WITH_AES_256_GCM_SHA384,
	TLS1_CK_RSA_WITH_AES_256_GCM_SHA384,
	SSL_kRSA,
	SSL_aRSA,
	SSL_AES256GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA384|TLS1_PRF_SHA384|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|
		SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	256,
	256,
	},

	/* Cipher 9E */
	{
	1,
	TLS1_TXT_DHE_RSA_WITH_AES_128_GCM_SHA256,
	TLS1_CK_DHE_RSA_WITH_AES_128_GCM_SHA256,
	SSL_kEDH,
	SSL_aRSA,
	SSL_AES128GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	128,
	128,
	},

	/* Cipher 9F */
	{
	1,
	TLS1_TXT_DHE_RSA_WITH_AES_256_GCM_SHA384,
	TLS1_CK_DHE_RSA_WITH_AES_256_GCM_SHA384,
	SSL_kEDH,
	SSL_aRSA,
	SSL_AES256GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA384|TLS1_PRF_SHA384|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|
		SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	256,
	256,
	},

	/* Cipher A6 */
	{
	1,
	TLS1_TXT_ADH_WITH_AES_128_GCM_SHA256,
	TLS1_CK_ADH_WITH_AES_128_GCM_SHA256,
	SSL_kEDH,
	SSL_aNULL,
	SSL_AES128GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	128,
	128,
	},

	/* Cipher A7 */
	{
	1,
	TLS1_TXT_ADH_WITH_AES_256_GCM_SHA384,
	TLS1_CK_ADH_WITH_AES_256_GCM_SHA384,
	SSL_kEDH,
	SSL_aNULL,
	SSL_AES256GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA384|TLS1_PRF_SHA384|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|
		SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	256,
	256,
	},

	/* Cipher C007 */
	{
	1,
	TLS1_TXT_ECDHE_ECDSA_WITH_RC4_128_SHA,
	TLS1_CK_ECDHE_ECDSA_WITH_RC4_128_SHA,
	SSL_kEECDH,
	SSL_aECDSA,
	SSL_RC4,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_MEDIUM,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher C009 */
	{
	1,
	TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
	TLS1_CK_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
	SSL_kEECDH,
	SSL_aECDSA,
	SSL_AES128,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher C00A */
	{
	1,
	TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
	TLS1_CK_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
	SSL_kEECDH,
	SSL_aECDSA,
	SSL_AES256,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	256,
	256,
	},

	/* Cipher C011 */
	{
	1,
	TLS1_TXT_ECDHE_RSA_WITH_RC4_128_SHA,
	TLS1_CK_ECDHE_RSA_WITH_RC4_128_SHA,
	SSL_kEECDH,
	SSL_aRSA,
	SSL_RC4,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_MEDIUM,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher C013 */
	{
	1,
	TLS1_TXT_ECDHE_RSA_WITH_AES_128_CBC_SHA,
	TLS1_CK_ECDHE_RSA_WITH_AES_128_CBC_SHA,
	SSL_kEECDH,
	SSL_aRSA,
	SSL_AES128,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher C014 */
	{
	1,
	TLS1_TXT_ECDHE_RSA_WITH_AES_256_CBC_SHA,
	TLS1_CK_ECDHE_RSA_WITH_AES_256_CBC_SHA,
	SSL_kEECDH,
	SSL_aRSA,
	SSL_AES256,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	256,
	256,
	},

	/* Cipher C016 */
	{
	1,
	TLS1_TXT_ECDH_anon_WITH_RC4_128_SHA,
	TLS1_CK_ECDH_anon_WITH_RC4_128_SHA,
	SSL_kEECDH,
	SSL_aNULL,
	SSL_RC4,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_MEDIUM,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher C018 */
	{
	1,
	TLS1_TXT_ECDH_anon_WITH_AES_128_CBC_SHA,
	TLS1_CK_ECDH_anon_WITH_AES_128_CBC_SHA,
	SSL_kEECDH,
	SSL_aNULL,
	SSL_AES128,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	128,
	128,
	},

	/* Cipher C019 */
	{
	1,
	TLS1_TXT_ECDH_anon_WITH_AES_256_CBC_SHA,
	TLS1_CK_ECDH_anon_WITH_AES_256_CBC_SHA,
	SSL_kEECDH,
	SSL_aNULL,
	SSL_AES256,
	SSL_SHA1,
	SSL_TLSV1,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
	256,
	256,
	},


	/* HMAC based TLS v1.2 ciphersuites from RFC5289 */

	/* Cipher C023 */
	{
	1,
	TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_SHA256,
	TLS1_CK_ECDHE_ECDSA_WITH_AES_128_SHA256,
	SSL_kEECDH,
	SSL_aECDSA,
	SSL_AES128,
	SSL_SHA256,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256,
	128,
	128,
	},

	/* Cipher C024 */
	{
	1,
	TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_SHA384,
	TLS1_CK_ECDHE_ECDSA_WITH_AES_256_SHA384,
	SSL_kEECDH,
	SSL_aECDSA,
	SSL_AES256,
	SSL_SHA384,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA384|TLS1_PRF_SHA384,
	256,
	256,
	},

	/* Cipher C027 */
	{
	1,
	TLS1_TXT_ECDHE_RSA_WITH_AES_128_SHA256,
	TLS1_CK_ECDHE_RSA_WITH_AES_128_SHA256,
	SSL_kEECDH,
	SSL_aRSA,
	SSL_AES128,
	SSL_SHA256,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256,
	128,
	128,
	},

	/* Cipher C028 */
	{
	1,
	TLS1_TXT_ECDHE_RSA_WITH_AES_256_SHA384,
	TLS1_CK_ECDHE_RSA_WITH_AES_256_SHA384,
	SSL_kEECDH,
	SSL_aRSA,
	SSL_AES256,
	SSL_SHA384,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA384|TLS1_PRF_SHA384,
	256,
	256,
	},

	/* GCM based TLS v1.2 ciphersuites from RFC5289 */

	/* Cipher C02B */
	{
	1,
	TLS1_TXT_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
	TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
	SSL_kEECDH,
	SSL_aECDSA,
	SSL_AES128GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	128,
	128,
	},

	/* Cipher C02C */
	{
	1,
	TLS1_TXT_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
	TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
	SSL_kEECDH,
	SSL_aECDSA,
	SSL_AES256GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA384|TLS1_PRF_SHA384|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|
		SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	256,
	256,
	},

	/* Cipher C02F */
	{
	1,
	TLS1_TXT_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
	TLS1_CK_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
	SSL_kEECDH,
	SSL_aRSA,
	SSL_AES128GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	128,
	128,
	},

	/* Cipher C030 */
	{
	1,
	TLS1_TXT_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
	TLS1_CK_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
	SSL_kEECDH,
	SSL_aRSA,
	SSL_AES256GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH|SSL_FIPS,
	SSL_HANDSHAKE_MAC_SHA384|TLS1_PRF_SHA384|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|
		SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	256,
	256,
	},

    /* ECDH PSK ciphersuites */
	/* Cipher CAFE */
	{
	1,
	TLS1_TXT_ECDHE_PSK_WITH_AES_128_GCM_SHA256,
	TLS1_CK_ECDHE_PSK_WITH_AES_128_GCM_SHA256,
	SSL_kEECDH,
	SSL_aPSK,
	SSL_AES128GCM,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(4)|
		SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD,
	128,
	128,
	},


	{
	1,
	TLS1_TXT_ECDHE_RSA_WITH_CHACHA20_POLY1305,
	TLS1_CK_ECDHE_RSA_CHACHA20_POLY1305,
	SSL_kEECDH,
	SSL_aRSA,
	SSL_CHACHA20POLY1305,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(0),
	256,
	0,
	},

	{
	1,
	TLS1_TXT_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
	TLS1_CK_ECDHE_ECDSA_CHACHA20_POLY1305,
	SSL_kEECDH,
	SSL_aECDSA,
	SSL_CHACHA20POLY1305,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(0),
	256,
	0,
	},

	{
	1,
	TLS1_TXT_DHE_RSA_WITH_CHACHA20_POLY1305,
	TLS1_CK_DHE_RSA_CHACHA20_POLY1305,
	SSL_kEDH,
	SSL_aRSA,
	SSL_CHACHA20POLY1305,
	SSL_AEAD,
	SSL_TLSV1_2,
	SSL_HIGH,
	SSL_HANDSHAKE_MAC_SHA256|TLS1_PRF_SHA256|SSL_CIPHER_ALGORITHM2_AEAD|FIXED_NONCE_LEN(0),
	256,
	0,
	},

/* end of list */
	};

SSL3_ENC_METHOD SSLv3_enc_data={
	ssl3_enc,
	n_ssl3_mac,
	ssl3_setup_key_block,
	ssl3_generate_master_secret,
	ssl3_change_cipher_state,
	ssl3_final_finish_mac,
	MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
	ssl3_cert_verify_mac,
	SSL3_MD_CLIENT_FINISHED_CONST,4,
	SSL3_MD_SERVER_FINISHED_CONST,4,
	ssl3_alert_code,
	(int (*)(SSL *, unsigned char *, size_t, const char *,
		 size_t, const unsigned char *, size_t,
		 int use_context))ssl_undefined_function,
	0,
	SSL3_HM_HEADER_LENGTH,
	ssl3_set_handshake_header,
	ssl3_handshake_write
	};

int ssl3_num_ciphers(void)
	{
	return(SSL3_NUM_CIPHERS);
	}

const SSL_CIPHER *ssl3_get_cipher(unsigned int u)
	{
	if (u < SSL3_NUM_CIPHERS)
		return(&(ssl3_ciphers[SSL3_NUM_CIPHERS-1-u]));
	else
		return(NULL);
	}

int ssl3_pending(const SSL *s)
	{
	if (s->rstate == SSL_ST_READ_BODY)
		return 0;

	return (s->s3->rrec.type == SSL3_RT_APPLICATION_DATA) ? s->s3->rrec.length : 0;
	}

void ssl3_set_handshake_header(SSL *s, int htype, unsigned long len)
	{
	unsigned char *p = (unsigned char *)s->init_buf->data;
	*(p++) = htype;
	l2n3(len, p);
	s->init_num = (int)len + SSL3_HM_HEADER_LENGTH;
	s->init_off = 0;
	}

int ssl3_handshake_write(SSL *s)
	{
	return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
	}

int ssl3_new(SSL *s)
	{
	SSL3_STATE *s3;

	if ((s3=OPENSSL_malloc(sizeof *s3)) == NULL) goto err;
	memset(s3,0,sizeof *s3);
	memset(s3->rrec.seq_num,0,sizeof(s3->rrec.seq_num));
	memset(s3->wrec.seq_num,0,sizeof(s3->wrec.seq_num));

	s->s3=s3;

	s->tlsext_channel_id_enabled = s->ctx->tlsext_channel_id_enabled;
	if (s->ctx->tlsext_channel_id_private)
		s->tlsext_channel_id_private = EVP_PKEY_dup(s->ctx->tlsext_channel_id_private);
	s->method->ssl_clear(s);
	return(1);
err:
	return(0);
	}

void ssl3_free(SSL *s)
	{
	if(s == NULL)
	    return;

	ssl3_cleanup_key_block(s);
	if (s->s3->rbuf.buf != NULL)
		ssl3_release_read_buffer(s);
	if (s->s3->wbuf.buf != NULL)
		ssl3_release_write_buffer(s);
	if (s->s3->tmp.dh != NULL)
		DH_free(s->s3->tmp.dh);
	if (s->s3->tmp.ecdh != NULL)
		EC_KEY_free(s->s3->tmp.ecdh);

	if (s->s3->tmp.ca_names != NULL)
		sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
	if (s->s3->tmp.certificate_types != NULL)
		OPENSSL_free(s->s3->tmp.certificate_types);
	if (s->s3->handshake_buffer) {
		BIO_free(s->s3->handshake_buffer);
	}
	if (s->s3->handshake_dgst) ssl3_free_digest_list(s);
	if (s->s3->alpn_selected)
		OPENSSL_free(s->s3->alpn_selected);

	OPENSSL_cleanse(s->s3,sizeof *s->s3);
	OPENSSL_free(s->s3);
	s->s3=NULL;
	}

void ssl3_clear(SSL *s)
	{
	unsigned char *rp,*wp;
	size_t rlen, wlen;
	int init_extra;

	ssl3_cleanup_key_block(s);
	if (s->s3->tmp.ca_names != NULL)
		sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
	if (s->s3->tmp.certificate_types != NULL)
		OPENSSL_free(s->s3->tmp.certificate_types);
	s->s3->tmp.num_certificate_types = 0;

	if (s->s3->tmp.dh != NULL)
		{
		DH_free(s->s3->tmp.dh);
		s->s3->tmp.dh = NULL;
		}
	if (s->s3->tmp.ecdh != NULL)
		{
		EC_KEY_free(s->s3->tmp.ecdh);
		s->s3->tmp.ecdh = NULL;
		}
	rp = s->s3->rbuf.buf;
	wp = s->s3->wbuf.buf;
	rlen = s->s3->rbuf.len;
 	wlen = s->s3->wbuf.len;
	init_extra = s->s3->init_extra;
	if (s->s3->handshake_buffer) {
		BIO_free(s->s3->handshake_buffer);
		s->s3->handshake_buffer = NULL;
	}
	if (s->s3->handshake_dgst) {
		ssl3_free_digest_list(s);
	}

	if (s->s3->alpn_selected)
		{
		OPENSSL_free(s->s3->alpn_selected);
		s->s3->alpn_selected = NULL;
		}
	memset(s->s3,0,sizeof *s->s3);
	s->s3->rbuf.buf = rp;
	s->s3->wbuf.buf = wp;
	s->s3->rbuf.len = rlen;
 	s->s3->wbuf.len = wlen;
	s->s3->init_extra = init_extra;

	ssl_free_wbio_buffer(s);

	s->packet_length=0;
	s->s3->renegotiate=0;
	s->s3->total_renegotiations=0;
	s->s3->num_renegotiations=0;
	s->s3->in_read_app_data=0;
	s->version = s->method->version;

	if (s->next_proto_negotiated)
		{
		OPENSSL_free(s->next_proto_negotiated);
		s->next_proto_negotiated = NULL;
		s->next_proto_negotiated_len = 0;
		}

	s->s3->tlsext_channel_id_valid = 0;
	}

static int ssl3_set_req_cert_type(CERT *c, const unsigned char *p, size_t len);

long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg)
	{
	int ret=0;

	if (cmd == SSL_CTRL_SET_TMP_RSA ||
	    cmd == SSL_CTRL_SET_TMP_RSA_CB ||
	    cmd == SSL_CTRL_SET_TMP_DH ||
	    cmd == SSL_CTRL_SET_TMP_DH_CB)
		{
		if (!ssl_cert_inst(&s->cert))
		    	{
			OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_MALLOC_FAILURE);
			return(0);
			}
		}

	switch (cmd)
		{
	case SSL_CTRL_GET_SESSION_REUSED:
		ret=s->hit;
		break;
	case SSL_CTRL_GET_CLIENT_CERT_REQUEST:
		break;
	case SSL_CTRL_GET_NUM_RENEGOTIATIONS:
		ret=s->s3->num_renegotiations;
		break;
	case SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS:
		ret=s->s3->num_renegotiations;
		s->s3->num_renegotiations=0;
		break;
	case SSL_CTRL_GET_TOTAL_RENEGOTIATIONS:
		ret=s->s3->total_renegotiations;
		break;
	case SSL_CTRL_GET_FLAGS:
		ret=(int)(s->s3->flags);
		break;
	case SSL_CTRL_NEED_TMP_RSA:
		/* Temporary RSA keys are never used. */
		ret = 0;
		break;
	case SSL_CTRL_SET_TMP_RSA:
		/* Temporary RSA keys are never used. */
		OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
		break;
	case SSL_CTRL_SET_TMP_RSA_CB:
		{
		OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
		return(ret);
		}
		break;
	case SSL_CTRL_SET_TMP_DH:
		{
			DH *dh = (DH *)parg;
			if (dh == NULL)
				{
				OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_PASSED_NULL_PARAMETER);
				return(ret);
				}
			if ((dh = DHparams_dup(dh)) == NULL)
				{
				OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_DH_LIB);
				return(ret);
				}
			if (!(s->options & SSL_OP_SINGLE_DH_USE))
				{
				if (!DH_generate_key(dh))
					{
					DH_free(dh);
					OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_DH_LIB);
					return(ret);
					}
				}
			if (s->cert->dh_tmp != NULL)
				DH_free(s->cert->dh_tmp);
			s->cert->dh_tmp = dh;
			ret = 1;
		}
		break;
	case SSL_CTRL_SET_TMP_DH_CB:
		{
		OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
		return(ret);
		}
		break;
	case SSL_CTRL_SET_TMP_ECDH:
		{
		EC_KEY *ecdh = NULL;

		if (parg == NULL)
			{
			OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_PASSED_NULL_PARAMETER);
			return(ret);
			}
		if (!EC_KEY_up_ref((EC_KEY *)parg))
			{
			OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_ECDH_LIB);
			return(ret);
			}
		ecdh = (EC_KEY *)parg;
		if (!(s->options & SSL_OP_SINGLE_ECDH_USE))
			{
			if (!EC_KEY_generate_key(ecdh))
				{
				EC_KEY_free(ecdh);
				OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_ECDH_LIB);
				return(ret);
				}
			}
		if (s->cert->ecdh_tmp != NULL)
			EC_KEY_free(s->cert->ecdh_tmp);
		s->cert->ecdh_tmp = ecdh;
		ret = 1;
		}
		break;
	case SSL_CTRL_SET_TMP_ECDH_CB:
		{
		OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
		return(ret);
		}
		break;
	case SSL_CTRL_SET_TLSEXT_HOSTNAME:
 		if (larg == TLSEXT_NAMETYPE_host_name)
			{
			if (s->tlsext_hostname != NULL)
				OPENSSL_free(s->tlsext_hostname);
			s->tlsext_hostname = NULL;

			ret = 1;
			if (parg == NULL)
				break;
			if (strlen((char *)parg) > TLSEXT_MAXLEN_host_name)
				{
				OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, SSL_R_SSL3_EXT_INVALID_SERVERNAME);
				return 0;
				}
			if ((s->tlsext_hostname = BUF_strdup((char *)parg)) == NULL)
				{
				OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_INTERNAL_ERROR);
				return 0;
				}
			}
		else
			{
			OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, SSL_R_SSL3_EXT_INVALID_SERVERNAME_TYPE);
			return 0;
			}
 		break;
	case SSL_CTRL_SET_TLSEXT_DEBUG_ARG:
		s->tlsext_debug_arg=parg;
		ret = 1;
		break;

	case SSL_CTRL_CHAIN:
		if (larg)
			return ssl_cert_set1_chain(s->cert,
						(STACK_OF (X509) *)parg);
		else
			return ssl_cert_set0_chain(s->cert,
						(STACK_OF (X509) *)parg);

	case SSL_CTRL_CHAIN_CERT:
		if (larg)
			return ssl_cert_add1_chain_cert(s->cert, (X509 *)parg);
		else
			return ssl_cert_add0_chain_cert(s->cert, (X509 *)parg);

	case SSL_CTRL_GET_CHAIN_CERTS:
		*(STACK_OF(X509) **)parg = s->cert->key->chain;
		break;

	case SSL_CTRL_SELECT_CURRENT_CERT:
		return ssl_cert_select_current(s->cert, (X509 *)parg);

	case SSL_CTRL_GET_CURVES:
		{
		const uint16_t *clist;
		size_t clistlen;
		if (!s->session)
			return 0;
		clist = s->session->tlsext_ellipticcurvelist;
		clistlen = s->session->tlsext_ellipticcurvelist_length;
		if (parg)
			{
			size_t i;
			int *cptr = parg;
			int nid;
			for (i = 0; i < clistlen; i++)
				{
				nid = tls1_ec_curve_id2nid(clist[i]);
				if (nid != OBJ_undef)
					cptr[i] = nid;
				else
					cptr[i] = TLSEXT_nid_unknown | clist[i];
				}
			}
		return (int)clistlen;
		}

	case SSL_CTRL_SET_CURVES:
		return tls1_set_curves(&s->tlsext_ellipticcurvelist,
					&s->tlsext_ellipticcurvelist_length,
								parg, larg);

	case SSL_CTRL_SET_ECDH_AUTO:
		s->cert->ecdh_tmp_auto = larg;
		return 1;
	case SSL_CTRL_SET_SIGALGS:
		return tls1_set_sigalgs(s->cert, parg, larg, 0);

	case SSL_CTRL_SET_CLIENT_SIGALGS:
		return tls1_set_sigalgs(s->cert, parg, larg, 1);

	case SSL_CTRL_GET_CLIENT_CERT_TYPES:
		{
		const unsigned char **pctype = parg;
		if (s->server || !s->s3->tmp.cert_req)
			return 0;
		if (pctype)
			*pctype = s->s3->tmp.certificate_types;
		return (int)s->s3->tmp.num_certificate_types;
		}

	case SSL_CTRL_SET_CLIENT_CERT_TYPES:
		if (!s->server)
			return 0;
		return ssl3_set_req_cert_type(s->cert, parg, larg);

	case SSL_CTRL_BUILD_CERT_CHAIN:
		return ssl_build_cert_chain(s->cert, s->ctx->cert_store, larg);

	case SSL_CTRL_SET_VERIFY_CERT_STORE:
		return ssl_cert_set_cert_store(s->cert, parg, 0, larg);

	case SSL_CTRL_SET_CHAIN_CERT_STORE:
		return ssl_cert_set_cert_store(s->cert, parg, 1, larg);

	case SSL_CTRL_GET_PEER_SIGNATURE_NID:
		if (SSL_USE_SIGALGS(s))
			{
			if (s->session && s->session->sess_cert)
				{
				const EVP_MD *sig;
				sig = s->session->sess_cert->peer_key->digest;
				if (sig)
					{
					*(int *)parg = EVP_MD_type(sig);
					return 1;
					}
				}
			return 0;
			}
		/* Might want to do something here for other versions */
		else
			return 0;

	case SSL_CTRL_GET_SERVER_TMP_KEY:
		if (s->server || !s->session || !s->session->sess_cert)
			return 0;
		else
			{
			SESS_CERT *sc;
			EVP_PKEY *ptmp;
			int rv = 0;
			sc = s->session->sess_cert;
			if (!sc->peer_rsa_tmp && !sc->peer_dh_tmp && !sc->peer_ecdh_tmp)
				return 0;
			ptmp = EVP_PKEY_new();
			if (!ptmp)
				return 0;
			if (sc->peer_rsa_tmp)
				rv = EVP_PKEY_set1_RSA(ptmp, sc->peer_rsa_tmp);
			else if (sc->peer_dh_tmp)
				rv = EVP_PKEY_set1_DH(ptmp, sc->peer_dh_tmp);
			else if (sc->peer_ecdh_tmp)
				rv = EVP_PKEY_set1_EC_KEY(ptmp, sc->peer_ecdh_tmp);
			if (rv)
				{
				*(EVP_PKEY **)parg = ptmp;
				return 1;
				}
			EVP_PKEY_free(ptmp);
			return 0;
			}
	case SSL_CTRL_GET_EC_POINT_FORMATS:
		{
		SSL_SESSION *sess = s->session;
		const unsigned char **pformat = parg;
		if (!sess || !sess->tlsext_ecpointformatlist)
			return 0;
		*pformat = sess->tlsext_ecpointformatlist;
		return (int)sess->tlsext_ecpointformatlist_length;
		}

	case SSL_CTRL_CHANNEL_ID:
		s->tlsext_channel_id_enabled = 1;
		ret = 1;
		break;

	case SSL_CTRL_SET_CHANNEL_ID:
		if (s->server)
			break;
		s->tlsext_channel_id_enabled = 1;
		if (EVP_PKEY_bits(parg) != 256)
			{
			OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, SSL_R_CHANNEL_ID_NOT_P256);
			break;
			}
		if (s->tlsext_channel_id_private)
			EVP_PKEY_free(s->tlsext_channel_id_private);
		s->tlsext_channel_id_private = EVP_PKEY_dup((EVP_PKEY*) parg);
		ret = 1;
		break;

	case SSL_CTRL_GET_CHANNEL_ID:
		if (!s->server)
			break;
		if (!s->s3->tlsext_channel_id_valid)
			break;
		memcpy(parg, s->s3->tlsext_channel_id, larg < 64 ? larg : 64);
		return 64;

	case SSL_CTRL_FALLBACK_SCSV:
		if (s->server)
			break;
		s->fallback_scsv = 1;
		ret = 1;
		break;

	default:
		break;
		}
	return(ret);
	}

long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
	{
	int ret=0;

	if (cmd == SSL_CTRL_SET_TMP_RSA_CB || cmd == SSL_CTRL_SET_TMP_DH_CB)
		{
		if (!ssl_cert_inst(&s->cert))
			{
			OPENSSL_PUT_ERROR(SSL, ssl3_callback_ctrl, ERR_R_MALLOC_FAILURE);
			return(0);
			}
		}

	switch (cmd)
		{
	case SSL_CTRL_SET_TMP_RSA_CB:
		/* Ignore the callback; temporary RSA keys are never used. */
		break;
	case SSL_CTRL_SET_TMP_DH_CB:
		{
		s->cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
		}
		break;
	case SSL_CTRL_SET_TMP_ECDH_CB:
		{
		s->cert->ecdh_tmp_cb = (EC_KEY *(*)(SSL *, int, int))fp;
		}
		break;
	case SSL_CTRL_SET_TLSEXT_DEBUG_CB:
		s->tlsext_debug_cb=(void (*)(SSL *,int ,int,
					unsigned char *, int, void *))fp;
		break;
	default:
		break;
		}
	return(ret);
	}

long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
	{
	CERT *cert;

	cert=ctx->cert;

	switch (cmd)
		{
	case SSL_CTRL_NEED_TMP_RSA:
		/* Temporary RSA keys are never used. */
		return 0;
	case SSL_CTRL_SET_TMP_RSA:
		OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
		return 0;
	case SSL_CTRL_SET_TMP_RSA_CB:
		{
		OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
		return(0);
		}
		break;
	case SSL_CTRL_SET_TMP_DH:
		{
		DH *new=NULL,*dh;

		dh=(DH *)parg;
		if ((new=DHparams_dup(dh)) == NULL)
			{
			OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, ERR_R_DH_LIB);
			return 0;
			}
		if (!(ctx->options & SSL_OP_SINGLE_DH_USE))
			{
			if (!DH_generate_key(new))
				{
				OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, ERR_R_DH_LIB);
				DH_free(new);
				return 0;
				}
			}
		if (cert->dh_tmp != NULL)
			DH_free(cert->dh_tmp);
		cert->dh_tmp=new;
		return 1;
		}
		/*break; */
	case SSL_CTRL_SET_TMP_DH_CB:
		{
		OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
		return(0);
		}
		break;
	case SSL_CTRL_SET_TMP_ECDH:
		{
		EC_KEY *ecdh = NULL;

		if (parg == NULL)
			{
			OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, ERR_R_ECDH_LIB);
			return 0;
			}
		ecdh = EC_KEY_dup((EC_KEY *)parg);
		if (ecdh == NULL)
			{
			OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, ERR_R_EC_LIB);
			return 0;
			}
		if (!(ctx->options & SSL_OP_SINGLE_ECDH_USE))
			{
			if (!EC_KEY_generate_key(ecdh))
				{
				EC_KEY_free(ecdh);
				OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, ERR_R_ECDH_LIB);
				return 0;
				}
			}

		if (cert->ecdh_tmp != NULL)
			{
			EC_KEY_free(cert->ecdh_tmp);
			}
		cert->ecdh_tmp = ecdh;
		return 1;
		}
		/* break; */
	case SSL_CTRL_SET_TMP_ECDH_CB:
		{
		OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
		return(0);
		}
		break;
	case SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG:
		ctx->tlsext_servername_arg=parg;
		break;
	case SSL_CTRL_SET_TLSEXT_TICKET_KEYS:
	case SSL_CTRL_GET_TLSEXT_TICKET_KEYS:
		{
		unsigned char *keys = parg;
		if (!keys)
			return 48;
		if (larg != 48)
			{
			OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, SSL_R_INVALID_TICKET_KEYS_LENGTH);
			return 0;
			}
		if (cmd == SSL_CTRL_SET_TLSEXT_TICKET_KEYS)
			{
			memcpy(ctx->tlsext_tick_key_name, keys, 16);
			memcpy(ctx->tlsext_tick_hmac_key, keys + 16, 16);
			memcpy(ctx->tlsext_tick_aes_key, keys + 32, 16);
			}
		else
			{
			memcpy(keys, ctx->tlsext_tick_key_name, 16);
			memcpy(keys + 16, ctx->tlsext_tick_hmac_key, 16);
			memcpy(keys + 32, ctx->tlsext_tick_aes_key, 16);
			}
		return 1;
		}

	case SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB_ARG:
		ctx->tlsext_status_arg=parg;
		return 1;
		break;

	case SSL_CTRL_SET_CURVES:
		return tls1_set_curves(&ctx->tlsext_ellipticcurvelist,
					&ctx->tlsext_ellipticcurvelist_length,
								parg, larg);

	case SSL_CTRL_SET_ECDH_AUTO:
		ctx->cert->ecdh_tmp_auto = larg;
		return 1;
	case SSL_CTRL_SET_SIGALGS:
		return tls1_set_sigalgs(ctx->cert, parg, larg, 0);

	case SSL_CTRL_SET_CLIENT_SIGALGS:
		return tls1_set_sigalgs(ctx->cert, parg, larg, 1);

	case SSL_CTRL_SET_CLIENT_CERT_TYPES:
		return ssl3_set_req_cert_type(ctx->cert, parg, larg);

	case SSL_CTRL_BUILD_CERT_CHAIN:
		return ssl_build_cert_chain(ctx->cert, ctx->cert_store, larg);

	case SSL_CTRL_SET_VERIFY_CERT_STORE:
		return ssl_cert_set_cert_store(ctx->cert, parg, 0, larg);

	case SSL_CTRL_SET_CHAIN_CERT_STORE:
		return ssl_cert_set_cert_store(ctx->cert, parg, 1, larg);


	/* A Thawte special :-) */
	case SSL_CTRL_EXTRA_CHAIN_CERT:
		if (ctx->extra_certs == NULL)
			{
			if ((ctx->extra_certs=sk_X509_new_null()) == NULL)
				return(0);
			}
		sk_X509_push(ctx->extra_certs,(X509 *)parg);
		break;

	case SSL_CTRL_GET_EXTRA_CHAIN_CERTS:
		if (ctx->extra_certs == NULL && larg == 0)
			*(STACK_OF(X509) **)parg =  ctx->cert->key->chain;
		else
			*(STACK_OF(X509) **)parg =  ctx->extra_certs;
		break;

	case SSL_CTRL_CLEAR_EXTRA_CHAIN_CERTS:
		if (ctx->extra_certs)
			{
			sk_X509_pop_free(ctx->extra_certs, X509_free);
			ctx->extra_certs = NULL;
			}
		break;

	case SSL_CTRL_CHAIN:
		if (larg)
			return ssl_cert_set1_chain(ctx->cert,
						(STACK_OF (X509) *)parg);
		else
			return ssl_cert_set0_chain(ctx->cert,
						(STACK_OF (X509) *)parg);

	case SSL_CTRL_CHAIN_CERT:
		if (larg)
			return ssl_cert_add1_chain_cert(ctx->cert, (X509 *)parg);
		else
			return ssl_cert_add0_chain_cert(ctx->cert, (X509 *)parg);

	case SSL_CTRL_GET_CHAIN_CERTS:
		*(STACK_OF(X509) **)parg = ctx->cert->key->chain;
		break;

	case SSL_CTRL_SELECT_CURRENT_CERT:
		return ssl_cert_select_current(ctx->cert, (X509 *)parg);

	case SSL_CTRL_CHANNEL_ID:
		/* must be called on a server */
		if (ctx->method->ssl_accept == ssl_undefined_function)
			return 0;
		ctx->tlsext_channel_id_enabled=1;
		return 1;

	case SSL_CTRL_SET_CHANNEL_ID:
		ctx->tlsext_channel_id_enabled = 1;
		if (EVP_PKEY_bits(parg) != 256)
			{
			OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, SSL_R_CHANNEL_ID_NOT_P256);
			break;
			}
		if (ctx->tlsext_channel_id_private)
			EVP_PKEY_free(ctx->tlsext_channel_id_private);
		ctx->tlsext_channel_id_private = EVP_PKEY_dup((EVP_PKEY*) parg);
		break;

	default:
		return(0);
		}
	return(1);
	}

long ssl3_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
	{
	CERT *cert;

	cert=ctx->cert;

	switch (cmd)
		{
	case SSL_CTRL_SET_TMP_RSA_CB:
		/* Ignore the callback; temporary RSA keys are never used. */
		break;
	case SSL_CTRL_SET_TMP_DH_CB:
		{
		cert->dh_tmp_cb = (DH *(*)(SSL *, int, int))fp;
		}
		break;
	case SSL_CTRL_SET_TMP_ECDH_CB:
		{
		cert->ecdh_tmp_cb = (EC_KEY *(*)(SSL *, int, int))fp;
		}
		break;
	case SSL_CTRL_SET_TLSEXT_SERVERNAME_CB:
		ctx->tlsext_servername_callback=(int (*)(SSL *,int *,void *))fp;
		break;

	case SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB:
		ctx->tlsext_status_cb=(int (*)(SSL *,void *))fp;
		break;

	case SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB:
		ctx->tlsext_ticket_key_cb=(int (*)(SSL *,unsigned char  *,
						unsigned char *,
						EVP_CIPHER_CTX *,
						HMAC_CTX *, int))fp;
		break;

	default:
		return(0);
		}
	return(1);
	}

/* ssl3_get_cipher_by_value returns the SSL_CIPHER with value |value| or NULL if
 * none exists.
 *
 * This function needs to check if the ciphers required are actually
 * available. */
const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value)
	{
	SSL_CIPHER c;

	c.id = 0x03000000L|value;
	return bsearch(&c, ssl3_ciphers, SSL3_NUM_CIPHERS, sizeof(SSL_CIPHER), ssl_cipher_id_cmp);
	}

/* ssl3_get_cipher_by_value returns the cipher value of |c|. */
uint16_t ssl3_get_cipher_value(const SSL_CIPHER *c)
	{
	unsigned long id = c->id;
	/* All ciphers are SSLv3 now. */
	assert((id & 0xff000000) == 0x03000000);
	return id & 0xffff;
	}

struct ssl_cipher_preference_list_st* ssl_get_cipher_preferences(SSL *s)
	{
	if (s->cipher_list != NULL)
		return(s->cipher_list);

	if (s->version >= TLS1_1_VERSION)
		{
		if (s->ctx != NULL && s->ctx->cipher_list_tls11 != NULL)
			return s->ctx->cipher_list_tls11;
		}

	if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL))
		return(s->ctx->cipher_list);

	return NULL;
	}

const SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *clnt,
	     struct ssl_cipher_preference_list_st *server_pref)
	{
	const SSL_CIPHER *c,*ret=NULL;
	STACK_OF(SSL_CIPHER) *srvr = server_pref->ciphers, *prio, *allow;
	int i,ok;
	size_t cipher_index;
	CERT *cert;
	unsigned long alg_k,alg_a,mask_k,mask_a;
	/* in_group_flags will either be NULL, or will point to an array of
	 * bytes which indicate equal-preference groups in the |prio| stack.
	 * See the comment about |in_group_flags| in the
	 * |ssl_cipher_preference_list_st| struct. */
	const unsigned char *in_group_flags;
	/* group_min contains the minimal index so far found in a group, or -1
	 * if no such value exists yet. */
	int group_min = -1;

	/* Let's see which ciphers we can support */
	cert=s->cert;

#if 0
	/* Do not set the compare functions, because this may lead to a
	 * reordering by "id". We want to keep the original ordering.
	 * We may pay a price in performance during sk_SSL_CIPHER_find(),
	 * but would have to pay with the price of sk_SSL_CIPHER_dup().
	 */
	sk_SSL_CIPHER_set_cmp_func(srvr, ssl_cipher_ptr_id_cmp);
	sk_SSL_CIPHER_set_cmp_func(clnt, ssl_cipher_ptr_id_cmp);
#endif

#ifdef CIPHER_DEBUG
	printf("Server has %d from %p:\n", sk_SSL_CIPHER_num(srvr), (void *)srvr);
	for(i=0 ; i < sk_SSL_CIPHER_num(srvr) ; ++i)
		{
		c=sk_SSL_CIPHER_value(srvr,i);
		printf("%p:%s\n",(void *)c,c->name);
		}
	printf("Client sent %d from %p:\n", sk_SSL_CIPHER_num(clnt), (void *)clnt);
	for(i=0 ; i < sk_SSL_CIPHER_num(clnt) ; ++i)
	    {
	    c=sk_SSL_CIPHER_value(clnt,i);
	    printf("%p:%s\n",(void *)c,c->name);
	    }
#endif

	if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
		{
		prio = srvr;
		in_group_flags = server_pref->in_group_flags;
		allow = clnt;
		}
	else
		{
		prio = clnt;
		in_group_flags = NULL;
		allow = srvr;
		}

	tls1_set_cert_validity(s);

	for (i=0; i<sk_SSL_CIPHER_num(prio); i++)
		{
		c=sk_SSL_CIPHER_value(prio,i);

		ok = 1;

		/* Skip TLS v1.2 only ciphersuites if not supported */
		if ((c->algorithm_ssl & SSL_TLSV1_2) &&
			!SSL_USE_TLS1_2_CIPHERS(s))
			ok = 0;

		ssl_set_cert_masks(cert,c);
		mask_k = cert->mask_k;
		mask_a = cert->mask_a;

#ifdef KSSL_DEBUG
/*		printf("ssl3_choose_cipher %d alg= %lx\n", i,c->algorithms);*/
#endif    /* KSSL_DEBUG */

		alg_k=c->algorithm_mkey;
		alg_a=c->algorithm_auth;

		/* with PSK there must be server callback set */
		if ((alg_a & SSL_aPSK) && s->psk_server_callback == NULL)
			ok = 0;

		ok = ok && (alg_k & mask_k) && (alg_a & mask_a);
#ifdef CIPHER_DEBUG
		printf("%d:[%08lX:%08lX:%08lX:%08lX]%p:%s\n",ok,alg_k,alg_a,mask_k,mask_a,(void *)c,
		       c->name);
#endif

		/* if we are considering an ECC cipher suite that uses
		 * an ephemeral EC key check it */
		if (alg_k & SSL_kEECDH)
			ok = ok && tls1_check_ec_tmp_key(s, c->id);

		if (ok && sk_SSL_CIPHER_find(allow, &cipher_index, c))
			{
			if (in_group_flags != NULL && in_group_flags[i] == 1)
				{
				/* This element of |prio| is in a group. Update
				 * the minimum index found so far and continue
				 * looking. */
				if (group_min == -1 || group_min > cipher_index)
					group_min = cipher_index;
				}
			else
				{
				if (group_min != -1 && group_min < cipher_index)
					cipher_index = group_min;
				ret=sk_SSL_CIPHER_value(allow,cipher_index);
				break;
				}
			}

		if (in_group_flags != NULL &&
		    in_group_flags[i] == 0 &&
		    group_min != -1)
			{
			/* We are about to leave a group, but we found a match
			 * in it, so that's our answer. */
			ret=sk_SSL_CIPHER_value(allow,group_min);
			break;
			}
		}
	return(ret);
	}

int ssl3_get_req_cert_type(SSL *s, unsigned char *p)
	{
	int ret=0;
	const unsigned char *sig;
	size_t i, siglen;
	int have_rsa_sign = 0;
	int have_ecdsa_sign = 0;

	/* If we have custom certificate types set, use them */
	if (s->cert->client_certificate_types)
		{
		memcpy(p, s->cert->client_certificate_types,
			s->cert->num_client_certificate_types);
		return (int)s->cert->num_client_certificate_types;
		}
	/* get configured sigalgs */
	siglen = tls12_get_psigalgs(s, &sig);
	for (i = 0; i < siglen; i+=2, sig+=2)
		{
		switch(sig[1])
			{
		case TLSEXT_signature_rsa:
			have_rsa_sign = 1;
			break;

		case TLSEXT_signature_ecdsa:
			have_ecdsa_sign = 1;
			break;
			}
		}

	if (have_rsa_sign)
		p[ret++]=SSL3_CT_RSA_SIGN;

	/* ECDSA certs can be used with RSA cipher suites as well
	 * so we don't need to check for SSL_kECDH or SSL_kEECDH
	 */
	if (s->version >= TLS1_VERSION)
		{
		if (have_ecdsa_sign)
			p[ret++]=TLS_CT_ECDSA_SIGN;
		}
	return(ret);
	}

static int ssl3_set_req_cert_type(CERT *c, const unsigned char *p, size_t len)
	{
	if (c->client_certificate_types)
		{
		OPENSSL_free(c->client_certificate_types);
		c->client_certificate_types = NULL;
		}
	c->num_client_certificate_types = 0;
	if (!p || !len)
		return 1;
	if (len > 0xff)
		return 0;
	c->client_certificate_types = BUF_memdup(p, len);
	if (!c->client_certificate_types)
		return 0;
	c->num_client_certificate_types = len;
	return 1;
	}

int ssl3_shutdown(SSL *s)
	{
	int ret;

	/* Don't do anything much if we have not done the handshake or
	 * we don't want to send messages :-) */
	if ((s->quiet_shutdown) || (s->state == SSL_ST_BEFORE))
		{
		s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
		return(1);
		}

	if (!(s->shutdown & SSL_SENT_SHUTDOWN))
		{
		s->shutdown|=SSL_SENT_SHUTDOWN;
#if 1
		ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_CLOSE_NOTIFY);
#endif
		/* our shutdown alert has been sent now, and if it still needs
	 	 * to be written, s->s3->alert_dispatch will be true */
	 	if (s->s3->alert_dispatch)
	 		return(-1);	/* return WANT_WRITE */
		}
	else if (s->s3->alert_dispatch)
		{
		/* resend it if not sent */
#if 1
		ret=s->method->ssl_dispatch_alert(s);
		if(ret == -1)
			{
			/* we only get to return -1 here the 2nd/Nth
			 * invocation, we must  have already signalled
			 * return 0 upon a previous invoation,
			 * return WANT_WRITE */
			return(ret);
			}
#endif
		}
	else if (!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
		{
		/* If we are waiting for a close from our peer, we are closed */
		s->method->ssl_read_bytes(s,0,NULL,0,0);
		if(!(s->shutdown & SSL_RECEIVED_SHUTDOWN))
			{
			return(-1);	/* return WANT_READ */
			}
		}

	if ((s->shutdown == (SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN)) &&
		!s->s3->alert_dispatch)
		return(1);
	else
		return(0);
	}

int ssl3_write(SSL *s, const void *buf, int len)
	{
	int ret,n;

#if 0
	if (s->shutdown & SSL_SEND_SHUTDOWN)
		{
		s->rwstate=SSL_NOTHING;
		return(0);
		}
#endif
	ERR_clear_system_error();
	if (s->s3->renegotiate) ssl3_renegotiate_check(s);

	/* This is an experimental flag that sends the
	 * last handshake message in the same packet as the first
	 * use data - used to see if it helps the TCP protocol during
	 * session-id reuse */
	/* The second test is because the buffer may have been removed */
	if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
		{
		/* First time through, we write into the buffer */
		if (s->s3->delay_buf_pop_ret == 0)
			{
			ret=ssl3_write_bytes(s,SSL3_RT_APPLICATION_DATA,
					     buf,len);
			if (ret <= 0) return(ret);

			s->s3->delay_buf_pop_ret=ret;
			}

		s->rwstate=SSL_WRITING;
		n=BIO_flush(s->wbio);
		if (n <= 0) return(n);
		s->rwstate=SSL_NOTHING;

		/* We have flushed the buffer, so remove it */
		ssl_free_wbio_buffer(s);
		s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;

		ret=s->s3->delay_buf_pop_ret;
		s->s3->delay_buf_pop_ret=0;
		}
	else
		{
		ret=s->method->ssl_write_bytes(s,SSL3_RT_APPLICATION_DATA,
			buf,len);
		if (ret <= 0) return(ret);
		}

	return(ret);
	}

static int ssl3_read_internal(SSL *s, void *buf, int len, int peek)
	{
	int n,ret;

	ERR_clear_system_error();
	if ((s->s3->flags & SSL3_FLAGS_POP_BUFFER) && (s->wbio == s->bbio))
		{
		/* Deal with an application that calls SSL_read() when handshake data
		 * is yet to be written.
		 */
		if (BIO_wpending(s->wbio) > 0)
			{
			s->rwstate=SSL_WRITING;
			n=BIO_flush(s->wbio);
			if (n <= 0) return(n);
			s->rwstate=SSL_NOTHING;
			}
		}
	if (s->s3->renegotiate) ssl3_renegotiate_check(s);
	s->s3->in_read_app_data=1;
	ret=s->method->ssl_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
	if ((ret == -1) && (s->s3->in_read_app_data == 2))
		{
		/* ssl3_read_bytes decided to call s->handshake_func, which
		 * called ssl3_read_bytes to read handshake data.
		 * However, ssl3_read_bytes actually found application data
		 * and thinks that application data makes sense here; so disable
		 * handshake processing and try to read application data again. */
		s->in_handshake++;
		ret=s->method->ssl_read_bytes(s,SSL3_RT_APPLICATION_DATA,buf,len,peek);
		s->in_handshake--;
		}
	else
		s->s3->in_read_app_data=0;

	return(ret);
	}

int ssl3_read(SSL *s, void *buf, int len)
	{
	return ssl3_read_internal(s, buf, len, 0);
	}

int ssl3_peek(SSL *s, void *buf, int len)
	{
	return ssl3_read_internal(s, buf, len, 1);
	}

int ssl3_renegotiate(SSL *s)
	{
	if (s->handshake_func == NULL)
		return(1);

	if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
		return(0);

	s->s3->renegotiate=1;
	return(1);
	}

int ssl3_renegotiate_check(SSL *s)
	{
	int ret=0;

	if (s->s3->renegotiate)
		{
		if (	(s->s3->rbuf.left == 0) &&
			(s->s3->wbuf.left == 0) &&
			!SSL_in_init(s))
			{
/*
if we are the server, and we have sent a 'RENEGOTIATE' message, we
need to go to SSL_ST_ACCEPT.
*/
			/* SSL_ST_ACCEPT */
			s->state=SSL_ST_RENEGOTIATE;
			s->s3->renegotiate=0;
			s->s3->num_renegotiations++;
			s->s3->total_renegotiations++;
			ret=1;
			}
		}
	return(ret);
	}
/* If we are using default SHA1+MD5 algorithms switch to new SHA256 PRF
 * and handshake macs if required.
 */
long ssl_get_algorithm2(SSL *s)
	{
	static const unsigned long kMask = SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF;
	long alg2 = s->s3->tmp.new_cipher->algorithm2;
	if (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SHA256_PRF
	    && (alg2 & kMask) == kMask)
		return SSL_HANDSHAKE_MAC_SHA256 | TLS1_PRF_SHA256;
	return alg2;
	}