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Diffstat (limited to 'include/iprt/md2.h')
| -rw-r--r-- | include/iprt/md2.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/include/iprt/md2.h b/include/iprt/md2.h new file mode 100644 index 00000000..0b408424 --- /dev/null +++ b/include/iprt/md2.h @@ -0,0 +1,139 @@ +/** @file + * IPRT - Message-Digest Algorithm 2. + */ + +/* + * Copyright (C) 2006-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + +#ifndef IPRT_INCLUDED_md2_h +#define IPRT_INCLUDED_md2_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/types.h> + +RT_C_DECLS_BEGIN + +/** @defgroup grp_rt_md2 RTMd2 - Message-Digest algorithm 2 + * @ingroup grp_rt + * @{ + */ + +/** Size of a MD2 hash. */ +#define RTMD2_HASH_SIZE 16 +/** The length of a MD2 digest string. The terminator is not included. */ +#define RTMD2_DIGEST_LEN 32 + +/** + * MD2 hash algorithm context. + */ +typedef union RTMD2CONTEXT +{ + uint64_t u64BetterAlignment; + uint8_t abPadding[4 + 16 + 16*4 + 16*4]; +#ifdef RT_MD2_PRIVATE_CONTEXT + MD2_CTX Private; +#endif +#ifdef RT_MD2_PRIVATE_ALT_CONTEXT + RTMD2ALTPRIVATECTX AltPrivate; +#endif +} RTMD2CONTEXT; + +/** Pointer to MD2 hash algorithm context. */ +typedef RTMD2CONTEXT *PRTMD2CONTEXT; + + +/** + * Compute the MD2 hash of the data. + * + * @param pvBuf Pointer to data. + * @param cbBuf Length of data (in bytes). + * @param pabDigest Where to store the hash. + * (What's passed is a pointer to the caller's buffer.) + */ +RTDECL(void) RTMd2(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTMD2_HASH_SIZE]); + +/** + * Initialize MD2 context. + * + * @param pCtx Pointer to the MD2 context to initialize. + */ +RTDECL(void) RTMd2Init(PRTMD2CONTEXT pCtx); + +/** + * Feed data into the MD2 computation. + * + * @param pCtx Pointer to the MD2 context. + * @param pvBuf Pointer to data. + * @param cbBuf Length of data (in bytes). + */ +RTDECL(void) RTMd2Update(PRTMD2CONTEXT pCtx, const void *pvBuf, size_t cbBuf); + +/** + * Compute the MD2 hash of the data. + * + * @param pCtx Pointer to the MD2 context. + * @param pabDigest Where to store the hash. (What's passed is a pointer to + * the caller's buffer.) + */ +RTDECL(void) RTMd2Final(PRTMD2CONTEXT pCtx, uint8_t pabDigest[RTMD2_HASH_SIZE]); + +/** + * Converts a MD2 hash to a digest string. + * + * @returns IPRT status code. + * + * @param pabDigest The binary digest returned by RTMd2Final or RTMd2. + * @param pszDigest Where to return the stringified digest. + * @param cchDigest The size of the output buffer. Should be at least + * RTMD2_STRING_LEN + 1 bytes. + */ +RTDECL(int) RTMd2ToString(uint8_t const pabDigest[RTMD2_HASH_SIZE], char *pszDigest, size_t cchDigest); + +/** + * Converts a MD2 hash to a digest string. + * + * @returns IPRT status code. + * + * @param pszDigest The stringified digest. Leading and trailing spaces are + * ignored. + * @param pabDigest Where to store the hash. (What is passed is a pointer to + * the caller's buffer.) + */ +RTDECL(int) RTMd2FromString(char const *pszDigest, uint8_t pabDigest[RTMD2_HASH_SIZE]); + +/** @} */ + +RT_C_DECLS_END + +#endif /* !IPRT_INCLUDED_md2_h */ + |