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+/* $OpenBSD: ssl2.h,v 1.12 2014/12/14 15:30:50 jsing Exp $ */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#ifndef HEADER_SSL2_H
+#define HEADER_SSL2_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Protocol Version Codes */
+#define SSL2_VERSION 0x0002
+#define SSL2_VERSION_MAJOR 0x00
+#define SSL2_VERSION_MINOR 0x02
+/* #define SSL2_CLIENT_VERSION 0x0002 */
+/* #define SSL2_SERVER_VERSION 0x0002 */
+
+/* Protocol Message Codes */
+#define SSL2_MT_ERROR 0
+#define SSL2_MT_CLIENT_HELLO 1
+#define SSL2_MT_CLIENT_MASTER_KEY 2
+#define SSL2_MT_CLIENT_FINISHED 3
+#define SSL2_MT_SERVER_HELLO 4
+#define SSL2_MT_SERVER_VERIFY 5
+#define SSL2_MT_SERVER_FINISHED 6
+#define SSL2_MT_REQUEST_CERTIFICATE 7
+#define SSL2_MT_CLIENT_CERTIFICATE 8
+
+/* Error Message Codes */
+#define SSL2_PE_UNDEFINED_ERROR 0x0000
+#define SSL2_PE_NO_CIPHER 0x0001
+#define SSL2_PE_NO_CERTIFICATE 0x0002
+#define SSL2_PE_BAD_CERTIFICATE 0x0004
+#define SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE 0x0006
+
+/* Cipher Kind Values */
+#define SSL2_CK_NULL_WITH_MD5 0x02000000 /* v3 */
+#define SSL2_CK_RC4_128_WITH_MD5 0x02010080
+#define SSL2_CK_RC4_128_EXPORT40_WITH_MD5 0x02020080
+#define SSL2_CK_RC2_128_CBC_WITH_MD5 0x02030080
+#define SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5 0x02040080
+#define SSL2_CK_IDEA_128_CBC_WITH_MD5 0x02050080
+#define SSL2_CK_DES_64_CBC_WITH_MD5 0x02060040
+#define SSL2_CK_DES_64_CBC_WITH_SHA 0x02060140 /* v3 */
+#define SSL2_CK_DES_192_EDE3_CBC_WITH_MD5 0x020700c0
+#define SSL2_CK_DES_192_EDE3_CBC_WITH_SHA 0x020701c0 /* v3 */
+#define SSL2_CK_RC4_64_WITH_MD5 0x02080080 /* MS hack */
+
+#define SSL2_CK_DES_64_CFB64_WITH_MD5_1 0x02ff0800 /* SSLeay */
+#define SSL2_CK_NULL 0x02ff0810 /* SSLeay */
+
+#define SSL2_TXT_DES_64_CFB64_WITH_MD5_1 "DES-CFB-M1"
+#define SSL2_TXT_NULL_WITH_MD5 "NULL-MD5"
+#define SSL2_TXT_RC4_128_WITH_MD5 "RC4-MD5"
+#define SSL2_TXT_RC4_128_EXPORT40_WITH_MD5 "EXP-RC4-MD5"
+#define SSL2_TXT_RC2_128_CBC_WITH_MD5 "RC2-CBC-MD5"
+#define SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5 "EXP-RC2-CBC-MD5"
+#define SSL2_TXT_IDEA_128_CBC_WITH_MD5 "IDEA-CBC-MD5"
+#define SSL2_TXT_DES_64_CBC_WITH_MD5 "DES-CBC-MD5"
+#define SSL2_TXT_DES_64_CBC_WITH_SHA "DES-CBC-SHA"
+#define SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5 "DES-CBC3-MD5"
+#define SSL2_TXT_DES_192_EDE3_CBC_WITH_SHA "DES-CBC3-SHA"
+#define SSL2_TXT_RC4_64_WITH_MD5 "RC4-64-MD5"
+
+#define SSL2_TXT_NULL "NULL"
+
+/* Flags for the SSL_CIPHER.algorithm2 field */
+#define SSL2_CF_5_BYTE_ENC 0x01
+#define SSL2_CF_8_BYTE_ENC 0x02
+
+/* Certificate Type Codes */
+#define SSL2_CT_X509_CERTIFICATE 0x01
+
+/* Authentication Type Code */
+#define SSL2_AT_MD5_WITH_RSA_ENCRYPTION 0x01
+
+#define SSL2_MAX_SSL_SESSION_ID_LENGTH 32
+
+/* Upper/Lower Bounds */
+#define SSL2_MAX_MASTER_KEY_LENGTH_IN_BITS 256
+#define SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER 32767u /* 2^15-1 */
+#define SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER 16383 /* 2^14-1 */
+
+#define SSL2_CHALLENGE_LENGTH 16
+/*#define SSL2_CHALLENGE_LENGTH 32 */
+#define SSL2_MIN_CHALLENGE_LENGTH 16
+#define SSL2_MAX_CHALLENGE_LENGTH 32
+#define SSL2_CONNECTION_ID_LENGTH 16
+#define SSL2_MAX_CONNECTION_ID_LENGTH 16
+#define SSL2_SSL_SESSION_ID_LENGTH 16
+#define SSL2_MAX_CERT_CHALLENGE_LENGTH 32
+#define SSL2_MIN_CERT_CHALLENGE_LENGTH 16
+#define SSL2_MAX_KEY_MATERIAL_LENGTH 24
+
+#ifdef __cplusplus
+}
+#endif
+#endif