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/*
* include/kerberosIV/des.h
*
* Copyright 1987, 1988, 1994, 2002 by the Massachusetts Institute of
* Technology. All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* Include file for the Data Encryption Standard library.
*/
#if defined(__MACH__) && defined(__APPLE__)
# include <TargetConditionals.h>
# if TARGET_RT_MAC_CFM
# error "Use KfM 4.0 SDK headers for CFM compilation."
# endif
#endif
#ifdef __cplusplus
#ifndef KRBINT_BEGIN_DECLS
#define KRBINT_BEGIN_DECLS extern "C" {
#define KRBINT_END_DECLS }
#endif
#else
#define KRBINT_BEGIN_DECLS
#define KRBINT_END_DECLS
#endif
#ifndef KRB5INT_DES_TYPES_DEFINED
#define KRB5INT_DES_TYPES_DEFINED
#include <limits.h>
KRBINT_BEGIN_DECLS
#if TARGET_OS_MAC
# pragma options align=mac68k
#endif
#if UINT_MAX >= 0xFFFFFFFFUL
#define DES_INT32 int
#define DES_UINT32 unsigned int
#else
#define DES_INT32 long
#define DES_UINT32 unsigned long
#endif
typedef unsigned char des_cblock[8]; /* crypto-block size */
/*
* Key schedule.
*
* This used to be
*
* typedef struct des_ks_struct {
* union { DES_INT32 pad; des_cblock _;} __;
* } des_key_schedule[16];
*
* but it would cause trouble if DES_INT32 were ever more than 4
* bytes. The reason is that all the encryption functions cast it to
* (DES_INT32 *), and treat it as if it were DES_INT32[32]. If
* 2*sizeof(DES_INT32) is ever more than sizeof(des_cblock), the
* caller-allocated des_key_schedule will be overflowed by the key
* scheduling functions. We can't assume that every platform will
* have an exact 32-bit int, and nothing should be looking inside a
* des_key_schedule anyway.
*/
typedef struct des_ks_struct { DES_INT32 _[2]; } des_key_schedule[16];
#if TARGET_OS_MAC
# pragma options align=reset
#endif
KRBINT_END_DECLS
#endif /* KRB5INT_DES_TYPES_DEFINED */
/* only do the whole thing once */
#ifndef DES_DEFS
/*
* lib/crypto/des/des_int.h defines KRB5INT_CRYPTO_DES_INT temporarily
* to avoid including the defintions and declarations below. The
* reason that the crypto library needs to include this file is that
* it needs to have its types aligned with krb4's types.
*/
#ifndef KRB5INT_CRYPTO_DES_INT
#define DES_DEFS
#if defined(_WIN32)
#ifndef KRB4
#define KRB4 1
#endif
#include <win-mac.h>
#endif
#include <stdio.h> /* need FILE for des_cblock_print_file */
KRBINT_BEGIN_DECLS
#if TARGET_OS_MAC
# pragma options align=mac68k
#endif
/* Windows declarations */
#ifndef KRB5_CALLCONV
#define KRB5_CALLCONV
#define KRB5_CALLCONV_C
#endif
#define DES_KEY_SZ (sizeof(des_cblock))
#define DES_ENCRYPT 1
#define DES_DECRYPT 0
#ifndef NCOMPAT
#define C_Block des_cblock
#define Key_schedule des_key_schedule
#define ENCRYPT DES_ENCRYPT
#define DECRYPT DES_DECRYPT
#define KEY_SZ DES_KEY_SZ
#define string_to_key des_string_to_key
#define read_pw_string des_read_pw_string
#define random_key des_random_key
#define pcbc_encrypt des_pcbc_encrypt
#define key_sched des_key_sched
#define cbc_encrypt des_cbc_encrypt
#define cbc_cksum des_cbc_cksum
#define C_Block_print des_cblock_print
#define quad_cksum des_quad_cksum
typedef struct des_ks_struct bit_64;
#endif
#define des_cblock_print(x) des_cblock_print_file(x, stdout)
/*
* Function Prototypes
*/
int KRB5_CALLCONV des_key_sched (C_Block, Key_schedule);
int KRB5_CALLCONV
des_pcbc_encrypt (C_Block *in, C_Block *out, long length,
const des_key_schedule schedule, C_Block *ivec,
int enc);
unsigned long KRB5_CALLCONV
des_quad_cksum (const unsigned char *in, unsigned DES_INT32 *out,
long length, int out_count, C_Block *seed);
/*
* XXX ABI change: used to return void; also, cns/kfm have signed long
* instead of unsigned long length.
*/
unsigned long KRB5_CALLCONV
des_cbc_cksum(const des_cblock *, des_cblock *, unsigned long,
const des_key_schedule, const des_cblock *);
int KRB5_CALLCONV des_string_to_key (const char *, C_Block);
void afs_string_to_key(char *, char *, des_cblock);
/* XXX ABI change: used to return krb5_error_code */
int KRB5_CALLCONV des_read_password(des_cblock *, char *, int);
int KRB5_CALLCONV des_ecb_encrypt(des_cblock *, des_cblock *,
const des_key_schedule, int);
/* XXX kfm/cns have signed long length */
int des_cbc_encrypt(des_cblock *, des_cblock *, unsigned long,
const des_key_schedule, const des_cblock *, int);
void des_fixup_key_parity(des_cblock);
int des_check_key_parity(des_cblock);
int KRB5_CALLCONV des_new_random_key(des_cblock);
void des_init_random_number_generator(des_cblock);
int des_random_key(des_cblock *);
int des_is_weak_key(des_cblock);
void des_cblock_print_file(des_cblock *, FILE *fp);
#if TARGET_OS_MAC
# pragma options align=reset
#endif
KRBINT_END_DECLS
#endif /* KRB5INT_CRYPTO_DES_INT */
#endif /* DES_DEFS */
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