/* * This file is part of John the Ripper password cracker, * Copyright (c) 1996-98 by Solar Designer */#include <string.h>#include "arch.h"#include "misc.h"#include "MD5_std.h"#include "common.h"#include "formats.h"#define FORMAT_LABEL			"md5"#define FORMAT_NAME			"FreeBSD MD5"#define BENCHMARK_COMMENT		""#define PLAINTEXT_LENGTH		15#define CIPHERTEXT_LENGTH		22#define BINARY_SIZE			4#define SALT_SIZE			8#define MIN_KEYS_PER_CRYPT		1#define MAX_KEYS_PER_CRYPT		1static struct fmt_tests tests[] = {	{"$1$12345678$aIccj83HRDBo6ux1bVx7D1", "0123456789ABCDE"},	{"$1$12345678$f8QoJuo0DpBRfQSD0vglc1", "12345678"},	{"$1$12345678$xek.CpjQUVgdf/P2N9KQf/", ""},	{"$1$1234$BdIMOAWFOV2AQlLsrN/Sw.", "1234"},	{NULL}};static char saved_key[PLAINTEXT_LENGTH + 1];static int valid(char *ciphertext){	char *pos, *start;	if (strncmp(ciphertext, "$1$", 3)) return 0;	for (pos = &ciphertext[3]; *pos && *pos != '$'; pos++);	if (!*pos || pos < &ciphertext[4] || pos > &ciphertext[11]) return 0;	start = ++pos;	while (atoi64[(ARCH_INDEX)*pos] >= 0) pos++;	return !*pos && pos - start == CIPHERTEXT_LENGTH;}static int binary_hash_0(void *binary){	return *(MD5_word *)binary & 0xF;}static int binary_hash_1(void *binary){	return *(MD5_word *)binary & 0xFF;}static int binary_hash_2(void *binary){	return *(MD5_word *)binary & 0xFFF;}static int get_hash_0(int index){	return MD5_out[0] & 0xF;}static int get_hash_1(int index){	return MD5_out[0] & 0xFF;}static int get_hash_2(int index){	return MD5_out[0] & 0xFFF;}static int salt_hash(void *salt){	return		((int)atoi64[(ARCH_INDEX)((char *)salt)[0]] | 		((int)atoi64[(ARCH_INDEX)((char *)salt)[1]] << 6)) & 0x3FF;}static void set_key(char *key, int index){	MD5_std_set_key(key);	strnfcpy(saved_key, key, PLAINTEXT_LENGTH);}static char *get_key(int index){	saved_key[PLAINTEXT_LENGTH] = 0;	return saved_key;}static int cmp_all(void *binary, int index){	return *(MD5_word *)binary == MD5_out[0];}static int cmp_exact(char *source, int index){	return !memcmp(MD5_std_get_binary(source), MD5_out,		sizeof(MD5_binary));}struct fmt_main fmt_MD5 = {	{		FORMAT_LABEL,		FORMAT_NAME,		MD5_ALGORITHM_NAME,		BENCHMARK_COMMENT,		PLAINTEXT_LENGTH,		BINARY_SIZE,		SALT_SIZE,		MIN_KEYS_PER_CRYPT,		MAX_KEYS_PER_CRYPT,		tests	}, {		fmt_default_init,		valid,		fmt_default_split,		(void *(*)(char *))MD5_std_get_binary,		(void *(*)(char *))MD5_std_get_salt,		{			binary_hash_0,			binary_hash_1,			binary_hash_2		},		salt_hash,		(void (*)(void *))MD5_std_set_salt,		set_key,		get_key,		(void (*)(int))MD5_std_crypt,		{			get_hash_0,			get_hash_1,			get_hash_2		},		cmp_all,		cmp_all,		cmp_exact	}};