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Diffstat (limited to 'include/iprt/md5.h')
| -rw-r--r-- | include/iprt/md5.h | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/include/iprt/md5.h b/include/iprt/md5.h new file mode 100644 index 00000000..852e609f --- /dev/null +++ b/include/iprt/md5.h @@ -0,0 +1,138 @@ +/** @file + * IPRT - Message-Digest algorithm 5. + */ + +/* + * Copyright (C) 2006-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE 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. + */ + +#ifndef IPRT_INCLUDED_md5_h +#define IPRT_INCLUDED_md5_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/types.h> + +/** @defgroup grp_rt_md5 RTMd5 - Message-Digest algorithm 5 + * @ingroup grp_rt + * @{ + */ + +/** Size of a MD5 hash. */ +#define RTMD5_HASH_SIZE 16 +/** @deprecated Use RTMD5_HASH_SIZE. */ +#define RTMD5HASHSIZE RTMD5_HASH_SIZE +/** The length of a MD5 digest string. The terminator is not included. */ +#define RTMD5_DIGEST_LEN 32 +/** Size of a MD5 hash. + * @deprecated Use RTMD5_DIGEST_LEN */ +#define RTMD5_STRING_LEN RTMD5_DIGEST_LEN + +/** + * MD5 hash algorithm context. + */ +typedef union RTMD5CONTEXT +{ + uint64_t u64BetterAlignment; + uint8_t abPadding[(4 + 6 + 16 + 1) * sizeof(uint32_t)]; + /** Context used by md5-alt.cpp. */ + struct + { + uint32_t in[16]; + uint32_t buf[4]; + uint32_t bits[2]; + } AltPrivate; +#ifdef RT_MD5_OPENSSL_PRIVATE_CONTEXT + /** Context used by md5-openssl.cpp. */ + MD5_CTX OsslPrivate; +#endif +} RTMD5CONTEXT; +/** Pointer to MD5 hash algorithm context. */ +typedef RTMD5CONTEXT *PRTMD5CONTEXT; + +RT_C_DECLS_BEGIN + +/** + * Compute the MD5 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) RTMd5(const void *pvBuf, size_t cbBuf, uint8_t pabDigest[RTMD5HASHSIZE]); + +/** + * Initialize MD5 context. + * + * @param pCtx Pointer to the MD5 context to initialize. + */ +RTDECL(void) RTMd5Init(PRTMD5CONTEXT pCtx); + +/** + * Feed data into the MD5 computation. + * + * @param pCtx Pointer to the MD5 context. + * @param pvBuf Pointer to data. + * @param cbBuf Length of data (in bytes). + */ +RTDECL(void) RTMd5Update(PRTMD5CONTEXT pCtx, const void *pvBuf, size_t cbBuf); + +/** + * Compute the MD5 hash of the data. + * + * @param pabDigest Where to store the hash. + * (What's passed is a pointer to the caller's buffer.) + * @param pCtx Pointer to the MD5 context. + */ +RTDECL(void) RTMd5Final(uint8_t pabDigest[RTMD5HASHSIZE], PRTMD5CONTEXT pCtx); + +/** + * Converts a MD5 hash to a digest string. + * + * @returns IPRT status code. + * + * @param pabDigest The binary digest returned by RTMd5Final or RTMd5. + * @param pszDigest Where to return the stringified digest. + * @param cchDigest The size of the output buffer. Should be at least + * RTMD5_STRING_LEN + 1 bytes. + */ +RTDECL(int) RTMd5ToString(uint8_t const pabDigest[RTMD5_HASH_SIZE], char *pszDigest, size_t cchDigest); + +/** + * Converts a MD5 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) RTMd5FromString(char const *pszDigest, uint8_t pabDigest[RTMD5_HASH_SIZE]); + + +RT_C_DECLS_END + +/** @} */ + +#endif /* !IPRT_INCLUDED_md5_h */ + |