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Diffstat (limited to '')
| -rw-r--r-- | lib/md5.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/lib/md5.h b/lib/md5.h new file mode 100644 index 0000000..6ddf009 --- /dev/null +++ b/lib/md5.h @@ -0,0 +1,166 @@ +/* Declaration of functions and data types used for MD5 sum computing + library functions. + Copyright (C) 1995-1997, 1999-2001, 2004-2006, 2008-2023 Free Software + Foundation, Inc. + This file is part of the GNU C Library. + + This file is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + This file 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 Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. */ + +#ifndef _MD5_H +#define _MD5_H 1 + +/* This file uses HAVE_OPENSSL_MD5. */ +#if !_GL_CONFIG_H_INCLUDED + #error "Please include config.h first." +#endif + +#include <stdio.h> +#include <stdint.h> + +# if HAVE_OPENSSL_MD5 +# ifndef OPENSSL_API_COMPAT +# define OPENSSL_API_COMPAT 0x10101000L /* FIXME: Use OpenSSL 1.1+ API. */ +# endif +/* If <openssl/macros.h> would give a compile-time error, don't use OpenSSL. */ +# include <openssl/configuration.h> +# if (OPENSSL_CONFIGURED_API \ + < (OPENSSL_API_COMPAT < 0x900000L ? OPENSSL_API_COMPAT : \ + ((OPENSSL_API_COMPAT >> 28) & 0xF) * 10000 \ + + ((OPENSSL_API_COMPAT >> 20) & 0xFF) * 100 \ + + ((OPENSSL_API_COMPAT >> 12) & 0xFF))) +# undef HAVE_OPENSSL_MD5 +# else +# include <openssl/md5.h> +# endif +# endif + +#define MD5_DIGEST_SIZE 16 +#define MD5_BLOCK_SIZE 64 + +#ifndef __GNUC_PREREQ +# if defined __GNUC__ && defined __GNUC_MINOR__ +# define __GNUC_PREREQ(maj, min) \ + ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) +# else +# define __GNUC_PREREQ(maj, min) 0 +# endif +#endif + +#ifndef __THROW +# if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major__ >= 4) +# define __THROW throw () +# else +# define __THROW +# endif +#endif + +#ifndef _LIBC +# define __md5_buffer md5_buffer +# define __md5_finish_ctx md5_finish_ctx +# define __md5_init_ctx md5_init_ctx +# define __md5_process_block md5_process_block +# define __md5_process_bytes md5_process_bytes +# define __md5_read_ctx md5_read_ctx +# define __md5_stream md5_stream +#endif + +# ifdef __cplusplus +extern "C" { +# endif + +# if HAVE_OPENSSL_MD5 +# define GL_OPENSSL_NAME 5 +# include "gl_openssl.h" +# else +/* Structure to save state of computation between the single steps. */ +struct md5_ctx +{ + uint32_t A; + uint32_t B; + uint32_t C; + uint32_t D; + + uint32_t total[2]; + uint32_t buflen; /* ≥ 0, ≤ 128 */ + uint32_t buffer[32]; /* 128 bytes; the first buflen bytes are in use */ +}; + +/* + * The following three functions are build up the low level used in + * the functions 'md5_stream' and 'md5_buffer'. + */ + +/* Initialize structure containing state of computation. + (RFC 1321, 3.3: Step 3) */ +extern void __md5_init_ctx (struct md5_ctx *ctx) __THROW; + +/* Starting with the result of former calls of this function (or the + initialization function update the context for the next LEN bytes + starting at BUFFER. + It is necessary that LEN is a multiple of 64!!! */ +extern void __md5_process_block (const void *buffer, size_t len, + struct md5_ctx *ctx) __THROW; + +/* Starting with the result of former calls of this function (or the + initialization function update the context for the next LEN bytes + starting at BUFFER. + It is NOT required that LEN is a multiple of 64. */ +extern void __md5_process_bytes (const void *buffer, size_t len, + struct md5_ctx *ctx) __THROW; + +/* Process the remaining bytes in the buffer and put result from CTX + in first 16 bytes following RESBUF. The result is always in little + endian byte order, so that a byte-wise output yields to the wanted + ASCII representation of the message digest. */ +extern void *__md5_finish_ctx (struct md5_ctx *ctx, void *restrict resbuf) + __THROW; + + +/* Put result from CTX in first 16 bytes following RESBUF. The result is + always in little endian byte order, so that a byte-wise output yields + to the wanted ASCII representation of the message digest. */ +extern void *__md5_read_ctx (const struct md5_ctx *ctx, void *restrict resbuf) + __THROW; + + +/* Compute MD5 message digest for LEN bytes beginning at BUFFER. The + result is always in little endian byte order, so that a byte-wise + output yields to the wanted ASCII representation of the message + digest. */ +extern void *__md5_buffer (const char *buffer, size_t len, + void *restrict resblock) __THROW; + +# endif + +/* Compute MD5 message digest for bytes read from STREAM. + STREAM is an open file stream. Regular files are handled more efficiently. + The contents of STREAM from its current position to its end will be read. + The case that the last operation on STREAM was an 'ungetc' is not supported. + The resulting message digest number will be written into the 16 bytes + beginning at RESBLOCK. */ +extern int __md5_stream (FILE *stream, void *resblock) __THROW; + + +# ifdef __cplusplus +} +# endif + +#endif /* md5.h */ + +/* + * Hey Emacs! + * Local Variables: + * coding: utf-8 + * End: + */ |