crypt/crypt.h

   1 /*
   2  * UFC-crypt: ultra fast crypt(3) implementation
   3  *
   4  * Copyright (C) 1991, 92, 93, 96, 97, 98, 2000 Free Software Foundation, Inc.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public
  17  * License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18  * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  *
  21  * @(#)crypt.h  1.5 12/20/96
  22  *
  23  */
  24
  25 #ifndef _CRYPT_H
  26 #define _CRYPT_H        1
  27
  28 #include <features.h>
  29
  30 __BEGIN_DECLS
  31
  32 /* Encrypt at most 8 characters from KEY using salt to perturb DES.  */
  33 extern char *crypt (__const char *__key, __const char *__salt) __THROW;
  34
  35 /* Setup DES tables according KEY.  */
  36 extern void setkey (__const char *__key) __THROW;
  37
  38 /* Encrypt data in BLOCK in place if EDFLAG is zero; otherwise decrypt
  39    block in place.  */
  40 extern void encrypt (char *__block, int __edflag) __THROW;
  41
  42 #ifdef __USE_GNU
  43 /* Reentrant versions of the functions above.  The additional argument
  44    points to a structure where the results are placed in.  */
  45 struct crypt_data
  46   {
  47     char keysched[16 * 8];
  48     char sb0[32768];
  49     char sb1[32768];
  50     char sb2[32768];
  51     char sb3[32768];
  52     /* end-of-aligment-critical-data */
  53     char crypt_3_buf[14];
  54     char current_salt[2];
  55     long int current_saltbits;
  56     int  direction, initialized;
  57   };
  58
  59 extern char *crypt_r (__const char *__key, __const char *__salt,
  60                       struct crypt_data * __restrict __data) __THROW;
  61
  62 extern void setkey_r (__const char *__key,
  63                       struct crypt_data * __restrict __data) __THROW;
  64
  65 extern void encrypt_r (char *__block, int __edflag,
  66                        struct crypt_data * __restrict __data) __THROW;
  67 #endif
  68
  69 __END_DECLS
  70
  71 #endif  /* crypt.h */