crypt: Remove libcrypt support

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>

1 files changed, 0 insertions, 76 deletions

diff --git a/crypt/crypt-private.h b/crypt/crypt-private.h
deleted file mode 100644
index e8067655fb..0000000000
--- a/crypt/crypt-private.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * UFC-crypt: ultra fast crypt(3) implementation
- *
- * Copyright (C) 1991-2023 Free Software Foundation, Inc.
- *
- * The GNU C Library 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.
- *
- * The GNU C Library 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 the GNU C Library; if not, see
- * <https://www.gnu.org/licenses/>.
- *
- * @(#)crypt-private.h	1.4 12/20/96
- */
-
-/* Prototypes for local functions in libcrypt.a.  */
-
-#ifndef CRYPT_PRIVATE_H
-#define CRYPT_PRIVATE_H	1
-
-#include <features.h>
-#include <stdbool.h>
-
-#ifndef DOS
-#include "ufc-crypt.h"
-#else
-/*
- * Thanks to greg%wind@plains.NoDak.edu (Greg W. Wettstein)
- * for DOS patches
- */
-#include "pl.h"
-#include "ufc.h"
-#endif
-#include "crypt.h"
-
-/* crypt.c */
-extern void _ufc_doit_r (ufc_long itr, struct crypt_data * __restrict __data,
-			 ufc_long *res);
-
-
-/* crypt_util.c */
-extern void __init_des_r (struct crypt_data * __restrict __data);
-extern void __init_des (void);
-
-extern bool _ufc_setup_salt_r (const char *s,
-			       struct crypt_data * __restrict __data);
-extern void _ufc_mk_keytab_r (const char *key,
-			      struct crypt_data * __restrict __data);
-extern void _ufc_dofinalperm_r (ufc_long *res,
-				struct crypt_data * __restrict __data);
-extern void _ufc_output_conversion_r (ufc_long v1, ufc_long v2,
-				      const char *salt,
-				      struct crypt_data * __restrict __data);
-
-extern void __setkey_r (const char *__key,
-			     struct crypt_data * __restrict __data);
-extern void __encrypt_r (char * __restrict __block, int __edflag,
-			      struct crypt_data * __restrict __data);
-
-/* crypt-entry.c */
-extern char *__crypt_r (const char *__key, const char *__salt,
-			     struct crypt_data * __restrict __data);
-extern char *fcrypt (const char *key, const char *salt);
-
-extern void __b64_from_24bit (char **cp, int *buflen,
-			      unsigned int b2, unsigned int b1, unsigned int b0,
-			      int n);
-
-#endif  /* crypt-private.h */