120 lines
4.5 KiB
C
120 lines
4.5 KiB
C
// Minimal changes introduced, for which:
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// Copyright(c) 2006 to 2019 ZettaScale Technology and others
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//
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// This program and the accompanying materials are made available under the
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// terms of the Eclipse Public License v. 2.0 which is available at
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// http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
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// v. 1.0 which is available at
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// http://www.eclipse.org/org/documents/edl-v10.php.
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//
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// SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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// Copyright (C) 1999, 2002 Aladdin Enterprises. All rights reserved.
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
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//
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// L. Peter Deutsch
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// ghost@aladdin.com
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// $Id: md5.h,v 1.4 2002/04/13 19:20:28 lpd Exp $
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// Independent implementation of MD5 (RFC 1321).
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//
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// This code implements the MD5 Algorithm defined in RFC 1321, whose
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// text is available at
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// http://www.ietf.org/rfc/rfc1321.txt
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// The code is derived from the text of the RFC, including the test suite
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// (section A.5) but excluding the rest of Appendix A. It does not include
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// any code or documentation that is identified in the RFC as being
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// copyrighted.
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//
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// The original and principal author of md5.h is L. Peter Deutsch
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// <ghost@aladdin.com>. Other authors are noted in the change history
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// that follows (in reverse chronological order):
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//
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// 2002-04-13 lpd Removed support for non-ANSI compilers; removed
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// references to Ghostscript; clarified derivation from RFC 1321;
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// now handles byte order either statically or dynamically.
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// 1999-11-04 lpd Edited comments slightly for automatic TOC extraction.
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// 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5);
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// added conditionalization for C++ compilation from Martin
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// Purschke <purschke@bnl.gov>.
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// 1999-05-03 lpd Original version.
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#ifndef DDSRT_MD5_H
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#define DDSRT_MD5_H
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#include <stddef.h>
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#include "dds/export.h"
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/** @file md5.h
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* The MD5 hash (a 128-bit hash, still suitable for detecting unintentional corruption,
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* but no longer to be used where a cryptographic hash is needed)
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*
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* This package supports both compile-time and run-time determination of CPU
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* byte order. If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be
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* compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is
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* defined as non-zero, the code will be compiled to run only on big-endian
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* CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to
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* run on either big- or little-endian CPUs, but will run slightly less
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* efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined.
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*/
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typedef unsigned char ddsrt_md5_byte_t; /* 8-bit byte */
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typedef unsigned int ddsrt_md5_word_t; /* 32-bit word */
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/** @brief The state object for the MD5 Algorithm. */
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typedef struct ddsrt_md5_state_s {
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ddsrt_md5_word_t count[2]; /* message length in bits, lsw first */
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ddsrt_md5_word_t abcd[4]; /* digest buffer */
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ddsrt_md5_byte_t buf[64]; /* accumulate block */
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} ddsrt_md5_state_t;
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/**
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* @brief Initialize the @ref ddsrt_md5_state_s
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*
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* @param[out] pms the state object to initialize
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*/
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DDS_EXPORT void ddsrt_md5_init(ddsrt_md5_state_t *pms);
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/**
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* @brief Add bytes to the message
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*
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* @param[in,out] pms the state object
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* @param[in] data pointer to data from which to compute the hash
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* @param[in] nbytes size of the data in bytes
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*/
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DDS_EXPORT void ddsrt_md5_append(ddsrt_md5_state_t *pms, const ddsrt_md5_byte_t *data, unsigned nbytes);
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/**
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* @brief Finish the message and return the hash
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*
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* @param[in,out] pms the state object
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* @param[out] digest the 128-bit hash
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*/
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DDS_EXPORT void ddsrt_md5_finish(ddsrt_md5_state_t *pms, ddsrt_md5_byte_t digest[16]);
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#ifdef __cplusplus
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} /* end extern "C" */
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#endif
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#endif /* DDSRT_MD5_H */
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