| 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) 2006-2022 Oracle Corporation
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License (GPL) as published by the Free Software
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| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | *
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| 16 | * The contents of this file may alternatively be used under the terms
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| 17 | * of the Common Development and Distribution License Version 1.0
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| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 19 | * VirtualBox OSE distribution, in which case the provisions of the
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| 20 | * CDDL are applicable instead of those of the GPL.
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| 21 | *
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| 22 | * You may elect to license modified versions of this file under the
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| 23 | * terms and conditions of either the GPL or the CDDL or both.
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| 24 | */
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| 25 |
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| 26 | #ifndef IPRT_INCLUDED_md2_h
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| 27 | #define IPRT_INCLUDED_md2_h
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| 28 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 29 | # pragma once
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| 30 | #endif
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| 31 |
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| 32 | #include <iprt/types.h>
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| 33 |
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| 34 | RT_C_DECLS_BEGIN
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| 35 |
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| 36 | /** @defgroup grp_rt_md2 RTMd2 - Message-Digest algorithm 2
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| 37 | * @ingroup grp_rt
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| 38 | * @{
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| 39 | */
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| 40 |
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| 41 | /** Size of a MD2 hash. */
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| 42 | #define RTMD2_HASH_SIZE 16
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| 43 | /** The length of a MD2 digest string. The terminator is not included. */
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| 44 | #define RTMD2_DIGEST_LEN 32
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| 45 |
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| 46 | /**
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| 47 | * MD2 hash algorithm context.
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| 48 | */
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| 49 | typedef union RTMD2CONTEXT
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| 50 | {
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| 51 | uint64_t u64BetterAlignment;
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| 52 | uint8_t abPadding[4 + 16 + 16*4 + 16*4];
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| 53 | #ifdef RT_MD2_PRIVATE_CONTEXT
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| 54 | MD2_CTX Private;
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| 55 | #endif
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| 56 | #ifdef RT_MD2_PRIVATE_ALT_CONTEXT
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| 57 | RTMD2ALTPRIVATECTX AltPrivate;
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| 58 | #endif
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| 59 | } RTMD2CONTEXT;
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| 60 |
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| 61 | /** Pointer to MD2 hash algorithm context. */
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| 62 | typedef RTMD2CONTEXT *PRTMD2CONTEXT;
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| 63 |
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| 64 |
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| 65 | /**
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| 66 | * Compute the MD2 hash of the data.
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| 67 | *
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| 68 | * @param pvBuf Pointer to data.
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| 69 | * @param cbBuf Length of data (in bytes).
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| 70 | * @param pabDigest Where to store the hash.
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| 71 | * (What's passed is a pointer to the caller's buffer.)
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| 72 | */
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| 73 | RTDECL(void) RTMd2(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTMD2_HASH_SIZE]);
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| 74 |
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| 75 | /**
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| 76 | * Initialize MD2 context.
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| 77 | *
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| 78 | * @param pCtx Pointer to the MD2 context to initialize.
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| 79 | */
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| 80 | RTDECL(void) RTMd2Init(PRTMD2CONTEXT pCtx);
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| 81 |
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| 82 | /**
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| 83 | * Feed data into the MD2 computation.
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| 84 | *
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| 85 | * @param pCtx Pointer to the MD2 context.
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| 86 | * @param pvBuf Pointer to data.
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| 87 | * @param cbBuf Length of data (in bytes).
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| 88 | */
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| 89 | RTDECL(void) RTMd2Update(PRTMD2CONTEXT pCtx, const void *pvBuf, size_t cbBuf);
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| 90 |
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| 91 | /**
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| 92 | * Compute the MD2 hash of the data.
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| 93 | *
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| 94 | * @param pCtx Pointer to the MD2 context.
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| 95 | * @param pabDigest Where to store the hash. (What's passed is a pointer to
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| 96 | * the caller's buffer.)
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| 97 | */
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| 98 | RTDECL(void) RTMd2Final(PRTMD2CONTEXT pCtx, uint8_t pabDigest[RTMD2_HASH_SIZE]);
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| 99 |
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| 100 | /**
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| 101 | * Converts a MD2 hash to a digest string.
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| 102 | *
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| 103 | * @returns IPRT status code.
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| 104 | *
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| 105 | * @param pabDigest The binary digest returned by RTMd2Final or RTMd2.
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| 106 | * @param pszDigest Where to return the stringified digest.
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| 107 | * @param cchDigest The size of the output buffer. Should be at least
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| 108 | * RTMD2_STRING_LEN + 1 bytes.
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| 109 | */
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| 110 | RTDECL(int) RTMd2ToString(uint8_t const pabDigest[RTMD2_HASH_SIZE], char *pszDigest, size_t cchDigest);
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| 111 |
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| 112 | /**
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| 113 | * Converts a MD2 hash to a digest string.
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| 114 | *
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| 115 | * @returns IPRT status code.
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| 116 | *
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| 117 | * @param pszDigest The stringified digest. Leading and trailing spaces are
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| 118 | * ignored.
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| 119 | * @param pabDigest Where to store the hash. (What is passed is a pointer to
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| 120 | * the caller's buffer.)
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| 121 | */
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| 122 | RTDECL(int) RTMd2FromString(char const *pszDigest, uint8_t pabDigest[RTMD2_HASH_SIZE]);
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| 123 |
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| 124 | /** @} */
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| 125 |
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| 126 | RT_C_DECLS_END
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| 127 |
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| 128 | #endif /* !IPRT_INCLUDED_md2_h */
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| 129 |
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