| 1 | /** @file
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| 2 | * IPRT - Message-Digest Algorithm 2.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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| 7 | *
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| 8 | * This file is part of VirtualBox base platform packages, as
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| 9 | * available from https://www.virtualbox.org.
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| 10 | *
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| 11 | * This program is free software; you can redistribute it and/or
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| 12 | * modify it under the terms of the GNU General Public License
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| 13 | * as published by the Free Software Foundation, in version 3 of the
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| 14 | * License.
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| 15 | *
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| 16 | * This program is distributed in the hope that it will be useful, but
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| 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 19 | * General Public License for more details.
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| 20 | *
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| 21 | * You should have received a copy of the GNU General Public License
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| 22 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 23 | *
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| 24 | * The contents of this file may alternatively be used under the terms
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| 25 | * of the Common Development and Distribution License Version 1.0
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| 26 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 27 | * in the VirtualBox distribution, in which case the provisions of the
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| 28 | * CDDL are applicable instead of those of the GPL.
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| 29 | *
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| 30 | * You may elect to license modified versions of this file under the
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| 31 | * terms and conditions of either the GPL or the CDDL or both.
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| 32 | *
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| 33 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 34 | */
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| 35 |
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| 36 | #ifndef IPRT_INCLUDED_md2_h
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| 37 | #define IPRT_INCLUDED_md2_h
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| 38 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 39 | # pragma once
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| 40 | #endif
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| 41 |
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| 42 | #include <iprt/types.h>
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| 43 |
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| 44 | RT_C_DECLS_BEGIN
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| 45 |
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| 46 | /** @defgroup grp_rt_md2 RTMd2 - Message-Digest algorithm 2
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| 47 | * @ingroup grp_rt
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| 48 | * @{
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| 49 | */
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| 50 |
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| 51 | /** Size of a MD2 hash. */
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| 52 | #define RTMD2_HASH_SIZE 16
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| 53 | /** The length of a MD2 digest string. The terminator is not included. */
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| 54 | #define RTMD2_DIGEST_LEN 32
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| 55 |
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| 56 | /**
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| 57 | * MD2 hash algorithm context.
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| 58 | */
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| 59 | typedef union RTMD2CONTEXT
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| 60 | {
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| 61 | uint64_t u64BetterAlignment;
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| 62 | uint8_t abPadding[4 + 16 + 16*4 + 16*4];
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| 63 | #ifdef RT_MD2_PRIVATE_CONTEXT
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| 64 | MD2_CTX Private;
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| 65 | #endif
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| 66 | #ifdef RT_MD2_PRIVATE_ALT_CONTEXT
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| 67 | RTMD2ALTPRIVATECTX AltPrivate;
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| 68 | #endif
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| 69 | } RTMD2CONTEXT;
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| 70 |
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| 71 | /** Pointer to MD2 hash algorithm context. */
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| 72 | typedef RTMD2CONTEXT *PRTMD2CONTEXT;
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| 73 |
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| 74 |
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| 75 | /**
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| 76 | * Compute the MD2 hash of the data.
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| 77 | *
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| 78 | * @param pvBuf Pointer to data.
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| 79 | * @param cbBuf Length of data (in bytes).
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| 80 | * @param pabDigest Where to store the hash.
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| 81 | * (What's passed is a pointer to the caller's buffer.)
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| 82 | */
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| 83 | RTDECL(void) RTMd2(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTMD2_HASH_SIZE]);
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| 84 |
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| 85 | /**
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| 86 | * Initialize MD2 context.
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| 87 | *
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| 88 | * @param pCtx Pointer to the MD2 context to initialize.
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| 89 | */
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| 90 | RTDECL(void) RTMd2Init(PRTMD2CONTEXT pCtx);
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| 91 |
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| 92 | /**
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| 93 | * Feed data into the MD2 computation.
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| 94 | *
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| 95 | * @param pCtx Pointer to the MD2 context.
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| 96 | * @param pvBuf Pointer to data.
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| 97 | * @param cbBuf Length of data (in bytes).
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| 98 | */
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| 99 | RTDECL(void) RTMd2Update(PRTMD2CONTEXT pCtx, const void *pvBuf, size_t cbBuf);
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| 100 |
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| 101 | /**
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| 102 | * Compute the MD2 hash of the data.
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| 103 | *
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| 104 | * @param pCtx Pointer to the MD2 context.
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| 105 | * @param pabDigest Where to store the hash. (What's passed is a pointer to
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| 106 | * the caller's buffer.)
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| 107 | */
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| 108 | RTDECL(void) RTMd2Final(PRTMD2CONTEXT pCtx, uint8_t pabDigest[RTMD2_HASH_SIZE]);
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| 109 |
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| 110 | /**
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| 111 | * Converts a MD2 hash to a digest string.
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| 112 | *
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| 113 | * @returns IPRT status code.
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| 114 | *
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| 115 | * @param pabDigest The binary digest returned by RTMd2Final or RTMd2.
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| 116 | * @param pszDigest Where to return the stringified digest.
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| 117 | * @param cchDigest The size of the output buffer. Should be at least
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| 118 | * RTMD2_STRING_LEN + 1 bytes.
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| 119 | */
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| 120 | RTDECL(int) RTMd2ToString(uint8_t const pabDigest[RTMD2_HASH_SIZE], char *pszDigest, size_t cchDigest);
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| 121 |
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| 122 | /**
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| 123 | * Converts a MD2 hash to a digest string.
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| 124 | *
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| 125 | * @returns IPRT status code.
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| 126 | *
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| 127 | * @param pszDigest The stringified digest. Leading and trailing spaces are
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| 128 | * ignored.
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| 129 | * @param pabDigest Where to store the hash. (What is passed is a pointer to
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| 130 | * the caller's buffer.)
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| 131 | */
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| 132 | RTDECL(int) RTMd2FromString(char const *pszDigest, uint8_t pabDigest[RTMD2_HASH_SIZE]);
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| 133 |
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| 134 | /** @} */
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| 135 |
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| 136 | RT_C_DECLS_END
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| 137 |
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| 138 | #endif /* !IPRT_INCLUDED_md2_h */
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| 139 |
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