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e6e3c66688
All the crypt related functions, cryptographic algorithms, and make requirements are removed, with only the exception of md5 implementation which is moved to locale folder since it is required by localedef for integrity protection (libc's locale-reading code does not check these, but localedef does generate them). Besides thec code itself, both internal documentation and the manual is also adjusted. This allows to remove both --enable-crypt and --enable-nss-crypt configure options. Checked with a build for all affected ABIs. Co-authored-by: Zack Weinberg <zack@owlfolio.org> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
/* Declaration of functions and data types used for MD5 sum computing
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library functions.
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Copyright (C) 1995-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _MD5_H
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#define _MD5_H 1
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#define MD5_DIGEST_SIZE 16
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#define MD5_BLOCK_SIZE 64
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/* The following contortions are an attempt to use the C preprocessor
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to determine an unsigned integral type that is 32 bits wide. An
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alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but
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doing that would require that the configure script compile and *run*
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the resulting executable. Locally running cross-compiled executables
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is usually not possible. */
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#include <stdint.h>
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typedef uint32_t md5_uint32;
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typedef uintptr_t md5_uintptr;
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/* Structure to save state of computation between the single steps. */
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struct md5_ctx
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{
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md5_uint32 A;
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md5_uint32 B;
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md5_uint32 C;
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md5_uint32 D;
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md5_uint32 total[2];
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md5_uint32 buflen;
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union
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{
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char buffer[128];
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md5_uint32 buffer32[32];
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};
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};
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/*
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* The following three functions are build up the low level used in
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* the functions `md5_stream' and `md5_buffer'.
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*/
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/* Initialize structure containing state of computation.
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(RFC 1321, 3.3: Step 3) */
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extern void __md5_init_ctx (struct md5_ctx *ctx) __THROW;
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is necessary that LEN is a multiple of 64!!! */
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extern void __md5_process_block (const void *buffer, size_t len,
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struct md5_ctx *ctx) __THROW;
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is NOT required that LEN is a multiple of 64. */
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extern void __md5_process_bytes (const void *buffer, size_t len,
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struct md5_ctx *ctx) __THROW;
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/* Process the remaining bytes in the buffer and put result from CTX
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in first 16 bytes following RESBUF. The result is always in little
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endian byte order, so that a byte-wise output yields to the wanted
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ASCII representation of the message digest.
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IMPORTANT: On some systems it is required that RESBUF is correctly
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aligned for a 32 bits value. */
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extern void *__md5_finish_ctx (struct md5_ctx *ctx, void *resbuf) __THROW;
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/* Put result from CTX in first 16 bytes following RESBUF. The result is
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always in little endian byte order, so that a byte-wise output yields
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to the wanted ASCII representation of the message digest.
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IMPORTANT: On some systems it is required that RESBUF is correctly
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aligned for a 32 bits value. */
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extern void *__md5_read_ctx (const struct md5_ctx *ctx, void *resbuf) __THROW;
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/* Compute MD5 message digest for LEN bytes beginning at BUFFER. The
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result is always in little endian byte order, so that a byte-wise
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output yields to the wanted ASCII representation of the message
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digest. */
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extern void *__md5_buffer (const char *buffer, size_t len,
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void *resblock) __THROW;
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#endif /* md5.h */
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