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, 115 deletions

diff --git a/crypt/crypt.c b/crypt/crypt.c
deleted file mode 100644
index f8dc5be..0000000
--- a/crypt/crypt.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * UFC-crypt: ultra fast crypt(3) implementation
- *
- * Copyright (C) 1991-2023 Free Software Foundation, Inc.
- *
- * This 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.
- *
- * This 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 this library; see the file COPYING.LIB.  If not,
- * see <https://www.gnu.org/licenses/>.
- *
- * @(#)crypt.c	2.25 12/20/96
- *
- * Semiportable C version
- *
- */
-
-#include "crypt-private.h"
-
-#ifdef _UFC_32_
-
-/*
- * 32 bit version
- */
-
-#define SBA(sb, v) (*(long32*)((char*)(sb)+(v)))
-
-void
-_ufc_doit_r (ufc_long itr, struct crypt_data * __restrict __data,
-	     ufc_long *res)
-{
-  int i;
-  long32 s, *k;
-  long32 *sb01 = (long32*)__data->sb0;
-  long32 *sb23 = (long32*)__data->sb2;
-  long32 l1, l2, r1, r2;
-
-  l1 = (long32)res[0]; l2 = (long32)res[1];
-  r1 = (long32)res[2]; r2 = (long32)res[3];
-
-  while(itr--) {
-    k = (long32*)__data->keysched;
-    for(i=8; i--; ) {
-      s = *k++ ^ r1;
-      l1 ^= SBA(sb01, s & 0xffff); l2 ^= SBA(sb01, (s & 0xffff)+4);
-      l1 ^= SBA(sb01, s >>= 16  ); l2 ^= SBA(sb01, (s         )+4);
-      s = *k++ ^ r2;
-      l1 ^= SBA(sb23, s & 0xffff); l2 ^= SBA(sb23, (s & 0xffff)+4);
-      l1 ^= SBA(sb23, s >>= 16  ); l2 ^= SBA(sb23, (s         )+4);
-
-      s = *k++ ^ l1;
-      r1 ^= SBA(sb01, s & 0xffff); r2 ^= SBA(sb01, (s & 0xffff)+4);
-      r1 ^= SBA(sb01, s >>= 16  ); r2 ^= SBA(sb01, (s         )+4);
-      s = *k++ ^ l2;
-      r1 ^= SBA(sb23, s & 0xffff); r2 ^= SBA(sb23, (s & 0xffff)+4);
-      r1 ^= SBA(sb23, s >>= 16  ); r2 ^= SBA(sb23, (s         )+4);
-    }
-    s=l1; l1=r1; r1=s; s=l2; l2=r2; r2=s;
-  }
-  res[0] = l1; res[1] = l2; res[2] = r1; res[3] = r2;
-}
-
-#endif
-
-#ifdef _UFC_64_
-
-/*
- * 64 bit version
- */
-
-#define SBA(sb, v) (*(long64*)((char*)(sb)+(v)))
-
-void
-_ufc_doit_r (ufc_long itr, struct crypt_data * __restrict __data,
-	     ufc_long *res)
-{
-  int i;
-  long64 l, r, s, *k;
-  long64 *sb01 = (long64*)__data->sb0;
-  long64 *sb23 = (long64*)__data->sb2;
-
-  l = (((long64)res[0]) << 32) | ((long64)res[1]);
-  r = (((long64)res[2]) << 32) | ((long64)res[3]);
-
-  while(itr--) {
-    k = (long64*)__data->keysched;
-    for(i=8; i--; ) {
-      s = *k++ ^ r;
-      l ^= SBA(sb23, (s       ) & 0xffff);
-      l ^= SBA(sb23, (s >>= 16) & 0xffff);
-      l ^= SBA(sb01, (s >>= 16) & 0xffff);
-      l ^= SBA(sb01, (s >>= 16)         );
-
-      s = *k++ ^ l;
-      r ^= SBA(sb23, (s       ) & 0xffff);
-      r ^= SBA(sb23, (s >>= 16) & 0xffff);
-      r ^= SBA(sb01, (s >>= 16) & 0xffff);
-      r ^= SBA(sb01, (s >>= 16)         );
-    }
-    s=l; l=r; r=s;
-  }
-
-  res[0] = l >> 32; res[1] = l & 0xffffffff;
-  res[2] = r >> 32; res[3] = r & 0xffffffff;
-}
-
-#endif