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DES_fmt.c
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DES_fmt.c
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/*
* This file is part of John the Ripper password cracker,
* Copyright (c) 1996-2001,2010-2012,2017 by Solar Designer
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted.
*
* There's ABSOLUTELY NO WARRANTY, express or implied.
*/
#include <stdint.h>
#include <string.h>
#include "arch.h"
#include "DES_std.h"
#include "common.h"
#include "formats.h"
#define FORMAT_LABEL "descrypt"
#define FORMAT_NAME "traditional crypt(3)"
#define BENCHMARK_COMMENT ""
#define BENCHMARK_LENGTH 7
#define PLAINTEXT_LENGTH 8
#define CIPHERTEXT_LENGTH_1 13
#define CIPHERTEXT_LENGTH_2 24
static struct fmt_tests tests[] = {
{"CCNf8Sbh3HDfQ", "U*U*U*U*"},
{"CCX.K.MFy4Ois", "U*U***U"},
{"CC4rMpbg9AMZ.", "U*U***U*"},
{"XXxzOu6maQKqQ", "*U*U*U*U"},
{"SDbsugeBiC58A", ""},
{NULL}
};
#if DES_BS
#include "DES_bs.h"
#define ALGORITHM_NAME DES_BS_ALGORITHM_NAME
#define BINARY_SIZE sizeof(uint32_t)
#define BINARY_ALIGN sizeof(uint32_t)
#define SALT_SIZE ARCH_SIZE
#define SALT_ALIGN ARCH_SIZE
#define MIN_KEYS_PER_CRYPT DES_BS_DEPTH
#define MAX_KEYS_PER_CRYPT DES_BS_DEPTH
#else
#define ALGORITHM_NAME DES_STD_ALGORITHM_NAME
#define BINARY_SIZE ARCH_SIZE
#define BINARY_ALIGN ARCH_SIZE
#define SALT_SIZE ARCH_SIZE
#define SALT_ALIGN ARCH_SIZE
#define MIN_KEYS_PER_CRYPT 0x40
#if DES_128K
#define MAX_KEYS_PER_CRYPT 0x100
#else
#define MAX_KEYS_PER_CRYPT 0x80
#endif
static struct {
union {
double dummy;
struct {
DES_KS KS;
DES_binary binary;
} data;
} aligned;
char key[PLAINTEXT_LENGTH];
} buffer[MAX_KEYS_PER_CRYPT];
#endif
#if DES_BS && DES_bs_mt
struct fmt_main fmt_DES;
#endif
static void init(struct fmt_main *self)
{
#if DES_BS
DES_bs_init(0, DES_bs_cpt);
#if DES_bs_mt
fmt_DES.params.min_keys_per_crypt = DES_bs_min_kpc;
fmt_DES.params.max_keys_per_crypt = DES_bs_max_kpc;
#endif
#else
DES_std_init();
#endif
}
static int valid(char *ciphertext, struct fmt_main *self)
{
char *pos;
if (!ciphertext[0] || !ciphertext[1]) return 0;
for (pos = &ciphertext[2]; atoi64[ARCH_INDEX(*pos)] != 0x7F; pos++);
if (*pos && *pos != ',') return 0;
if (atoi64[ARCH_INDEX(*(pos - 1))] & 3) return 0;
switch (pos - ciphertext) {
case CIPHERTEXT_LENGTH_1:
return 1;
case CIPHERTEXT_LENGTH_2:
if (atoi64[ARCH_INDEX(ciphertext[12])] & 3) return 0;
return 2;
default:
return 0;
}
}
static char *split(char *ciphertext, int index, struct fmt_main *self)
{
static char out[14];
if (index) {
memcpy(out, &ciphertext[2], 2);
memcpy(&out[2], &ciphertext[13], 11);
} else
memcpy(out, ciphertext, 13);
out[13] = 0;
/* Replace potential invalid salts with their valid counterparts */
unsigned int salt = DES_raw_get_salt(out);
out[0] = itoa64[salt & 0x3f];
out[1] = itoa64[salt >> 6];
return out;
}
static void *salt(char *ciphertext)
{
static ARCH_WORD out;
#if DES_BS
out = DES_raw_get_salt(ciphertext);
#else
out = DES_std_get_salt(ciphertext);
#endif
return &out;
}
#if DES_BS
static int binary_hash_0(void *binary)
{
return *(uint32_t *)binary & PH_MASK_0;
}
static int binary_hash_1(void *binary)
{
return *(uint32_t *)binary & PH_MASK_1;
}
static int binary_hash_2(void *binary)
{
return *(uint32_t *)binary & PH_MASK_2;
}
static int binary_hash_3(void *binary)
{
return *(uint32_t *)binary & PH_MASK_3;
}
static int binary_hash_4(void *binary)
{
return *(uint32_t *)binary & PH_MASK_4;
}
static int binary_hash_5(void *binary)
{
return *(uint32_t *)binary & PH_MASK_5;
}
static int binary_hash_6(void *binary)
{
return *(uint32_t *)binary & PH_MASK_6;
}
#define get_hash_0 DES_bs_get_hash_0
#define get_hash_1 DES_bs_get_hash_1
#define get_hash_2 DES_bs_get_hash_2
#define get_hash_3 DES_bs_get_hash_3
#define get_hash_4 DES_bs_get_hash_4
#define get_hash_5 DES_bs_get_hash_5
#define get_hash_6 DES_bs_get_hash_6
static int salt_hash(void *salt)
{
return *(ARCH_WORD *)salt & (SALT_HASH_SIZE - 1);
}
static void set_salt(void *salt)
{
DES_bs_set_salt(*(ARCH_WORD *)salt);
}
#define crypt_all DES_bs_crypt_25
static int cmp_one(void *binary, int index)
{
return DES_bs_cmp_one((uint32_t *)binary, 32, index);
}
static int cmp_exact(char *source, int index)
{
return DES_bs_cmp_one(DES_bs_get_binary(source), 64, index);
}
#else
static int binary_hash_0(void *binary)
{
return DES_STD_HASH_0(*(ARCH_WORD *)binary);
}
static int binary_hash_1(void *binary)
{
return DES_STD_HASH_1(*(ARCH_WORD *)binary);
}
#define binary_hash_2 NULL
#define binary_hash_3 NULL
#define binary_hash_4 NULL
#define binary_hash_5 NULL
#define binary_hash_6 NULL
static int get_hash_0(int index)
{
ARCH_WORD binary;
binary = buffer[index].aligned.data.binary[0];
return DES_STD_HASH_0(binary);
}
static int get_hash_1(int index)
{
ARCH_WORD binary;
binary = buffer[index].aligned.data.binary[0];
return DES_STD_HASH_1(binary);
}
#define get_hash_2 NULL
#define get_hash_3 NULL
#define get_hash_4 NULL
#define get_hash_5 NULL
#define get_hash_6 NULL
static int salt_hash(void *salt)
{
return DES_STD_HASH_1(*(ARCH_WORD *)salt) & (SALT_HASH_SIZE - 1);
}
static void set_salt(void *salt)
{
DES_std_set_salt(*(ARCH_WORD *)salt);
}
static int crypt_all(int *pcount, struct db_salt *salt)
{
int count = *pcount;
int index;
for (index = 0; index < count; index++)
DES_std_crypt(buffer[index].aligned.data.KS,
buffer[index].aligned.data.binary);
return count;
}
static int cmp_all(void *binary, int count)
{
int index;
for (index = 0; index < count; index++)
if (*(unsigned ARCH_WORD *)binary ==
(buffer[index].aligned.data.binary[0] & DES_BINARY_MASK))
return 1;
return 0;
}
static int cmp_one(void *binary, int index)
{
return *(unsigned ARCH_WORD *)binary ==
(buffer[index].aligned.data.binary[0] & DES_BINARY_MASK);
}
static int cmp_exact(char *source, int index)
{
ARCH_WORD *binary;
int word;
binary = DES_std_get_binary(source);
for (word = 0; word < 16 / DES_SIZE; word++)
if ((unsigned ARCH_WORD)binary[word] !=
(buffer[index].aligned.data.binary[word] & DES_BINARY_MASK))
return 0;
return 1;
}
#endif
#if !DES_BS
static void set_key(char *key, int index)
{
DES_std_set_key(key);
memcpy(buffer[index].aligned.data.KS, DES_KS_current, sizeof(DES_KS));
memcpy(buffer[index].key, key, PLAINTEXT_LENGTH);
}
#endif
static char *get_key(int index)
{
static char out[PLAINTEXT_LENGTH + 1];
#if DES_BS
unsigned char *src;
char *dst;
init_t();
src = DES_bs_all.pxkeys[index];
dst = out;
while (dst < &out[PLAINTEXT_LENGTH] && (*dst = *src)) {
src += sizeof(DES_bs_vector) * 8;
dst++;
}
*dst = 0;
#else
memcpy(out, buffer[index].key, PLAINTEXT_LENGTH);
out[PLAINTEXT_LENGTH] = 0;
#endif
return out;
}
struct fmt_main fmt_DES = {
{
FORMAT_LABEL,
FORMAT_NAME,
ALGORITHM_NAME,
BENCHMARK_COMMENT,
BENCHMARK_LENGTH,
0,
PLAINTEXT_LENGTH,
BINARY_SIZE,
BINARY_ALIGN,
SALT_SIZE,
SALT_ALIGN,
MIN_KEYS_PER_CRYPT,
MAX_KEYS_PER_CRYPT,
#if DES_BS && DES_bs_mt
FMT_OMP |
#endif
#if DES_BS
FMT_BS |
#endif
FMT_TRUNC | FMT_CASE,
{ NULL },
{ NULL },
tests
}, {
init,
fmt_default_done,
fmt_default_reset,
fmt_default_prepare,
valid,
split,
(void *(*)(char *))
#if DES_BS
DES_bs_get_binary,
#else
DES_std_get_binary,
#endif
salt,
{ NULL },
fmt_default_source,
{
binary_hash_0,
binary_hash_1,
binary_hash_2,
binary_hash_3,
binary_hash_4,
binary_hash_5,
binary_hash_6
},
salt_hash,
NULL,
set_salt,
#if DES_BS
DES_bs_set_key,
#else
set_key,
#endif
get_key,
fmt_default_clear_keys,
crypt_all,
{
get_hash_0,
get_hash_1,
get_hash_2,
get_hash_3,
get_hash_4,
get_hash_5,
get_hash_6
},
#if DES_BS
(int (*)(void *, int))DES_bs_cmp_all,
#else
cmp_all,
#endif
cmp_one,
cmp_exact
}
};