crypt/crypt.h

   1 /*
   2  * UFC-crypt: ultra fast crypt(3) implementation
   3  *
   4  * Copyright (C) 1991-1993,1996-1998,2000,2004,2012
   5  * Free Software Foundation, Inc.
   6  *
   7  * The GNU C Library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * The GNU C Library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with the GNU C Library; if not, see
  19  * <http://www.gnu.org/licenses/>.
  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)
  34      __THROW __nonnull ((1, 2));
  35
  36 /* Setup DES tables according KEY.  */
  37 extern void setkey (const char *__key) __THROW __nonnull ((1));
  38
  39 /* Encrypt data in BLOCK in place if EDFLAG is zero; otherwise decrypt
  40    block in place.  */
  41 extern void encrypt (char *__block, int __edflag) __THROW __nonnull ((1));
  42
  43 #ifdef __USE_GNU
  44 /* Reentrant versions of the functions above.  The additional argument
  45    points to a structure where the results are placed in.  */
  46 struct crypt_data
  47   {
  48     char keysched[16 * 8];
  49     char sb0[32768];
  50     char sb1[32768];
  51     char sb2[32768];
  52     char sb3[32768];
  53     /* end-of-aligment-critical-data */
  54     char crypt_3_buf[14];
  55     char current_salt[2];
  56     long int current_saltbits;
  57     int  direction, initialized;
  58   };
  59
  60 extern char *crypt_r (const char *__key, const char *__salt,
  61                       struct crypt_data * __restrict __data)
  62      __THROW __nonnull ((1, 2, 3));
  63
  64 extern void setkey_r (const char *__key,
  65                       struct crypt_data * __restrict __data)
  66      __THROW __nonnull ((1, 2));
  67
  68 extern void encrypt_r (char *__block, int __edflag,
  69                        struct crypt_data * __restrict __data)
  70      __THROW __nonnull ((1, 3));
  71 #endif
  72
  73 __END_DECLS
  74
  75 #endif  /* crypt.h */