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59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/*
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* Copyright 1987, 1988 by the Massachusetts Institute of Technology.
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*
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* For copying and distribution information, please see the file
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* <mit-copyright.h>.
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*
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* Include file for the Data Encryption Standard library.
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*/
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/* only do the whole thing once */
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#ifndef DES_DEFS
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#define DES_DEFS
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#include <mit_copy.h>
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typedef unsigned char des_cblock[8]; /* crypto-block size */
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/* Key schedule */
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typedef struct des_ks_struct { des_cblock _; } des_key_schedule[16];
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#define DES_KEY_SZ (sizeof(des_cblock))
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#define DES_ENCRYPT 1
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#define DES_DECRYPT 0
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#ifndef NCOMPAT
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#define C_Block des_cblock
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#define Key_schedule des_key_schedule
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#define ENCRYPT DES_ENCRYPT
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#define DECRYPT DES_DECRYPT
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#define KEY_SZ DES_KEY_SZ
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#define string_to_key des_string_to_key
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#define read_pw_string des_read_pw_string
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#define random_key des_random_key
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#define pcbc_encrypt des_pcbc_encrypt
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#define key_sched des_key_sched
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#define cbc_encrypt des_cbc_encrypt
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#define cbc_cksum des_cbc_cksum
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#define C_Block_print des_cblock_print
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#define quad_cksum des_quad_cksum
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typedef struct des_ks_struct bit_64;
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#endif
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#define des_cblock_print(x) des_cblock_print_file(x, stdout)
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int des_check_key_parity(des_cblock);
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int des_is_weak_key(des_cblock);
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/* Function prototypes */
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int des_key_sched(des_cblock,des_key_schedule);
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int des_ecb_encrypt(unsigned long*,unsigned long*,des_key_schedule,int);
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int des_pcbc_encrypt(des_cblock*,des_cblock*,long,des_key_schedule,
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des_cblock*,int);
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unsigned long des_cbc_cksum(des_cblock*,des_cblock*,long,
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des_key_schedule,des_cblock*);
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int des_is_weak_key(des_cblock);
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void des_fixup_key_parity(des_cblock);
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int des_check_key_parity(des_cblock);
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#endif /* DES_DEFS */
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