From c579f3458775ca45bd86dcb9b8ef09e7d2a03bdc Mon Sep 17 00:00:00 2001
From: Pixel <pixel@nobis-crew.org>
Date: Wed, 5 Aug 2009 11:36:56 -0700
Subject: MPQCryptography.c doesn't really have anything to do anymore with its
 original piece of code; cleaning it up and renaming it.

---
 MPQCryptography.c | 179 ------------------------------------------------------
 1 file changed, 179 deletions(-)
 delete mode 100644 MPQCryptography.c

(limited to 'MPQCryptography.c')

diff --git a/MPQCryptography.c b/MPQCryptography.c
deleted file mode 100644
index e18e279..0000000
--- a/MPQCryptography.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- *  MPQCryptography.c
- *  MPQKit
- *
- *  Created by Jean-Francois Roy on Sat Oct 05 2002.
- *  Copyright (c) 2002-2007 MacStorm. All rights reserved.
- *
- */
-
-/*
- * Ripped for mpqlib - all endinaness stuff has been killed.
- * Also, all the unnecessary code has been ripped out.
- * Other than that, this is the exact same code.
- */
-
-#include <assert.h>
-#include <string.h>
-
-#include "MPQCryptography.h"
-
-static int crypt_table_initialized = 0;
-static uint32_t crypt_table[0x500];
-
-/****TODO****/
-/* Re-implement various endianess fixes. */
-
-const uint32_t *__mpqlib_get_cryptography_table()
-{
-    assert(crypt_table_initialized);
-    return crypt_table;
-}
-
-void __mpqlib_init_cryptography()
-{
-   // Prepare crypt_table
-    uint32_t seed = 0x00100001;
-    uint32_t index1 = 0;
-    uint32_t index2 = 0;
-    int32_t i;
-
-    if (!crypt_table_initialized) {
-        crypt_table_initialized = 1;
-
-        for (index1 = 0; index1 < 0x100; index1++) {
-            for (index2 = index1, i = 0; i < 5; i++, index2 += 0x100) {
-                uint32_t temp1, temp2;
-
-                seed = (seed * 125 + 3) % 0x2AAAAB;
-                temp1 = (seed & 0xFFFF) << 0x10;
-
-                seed = (seed * 125 + 3) % 0x2AAAAB;
-                temp2 = (seed & 0xFFFF);
-
-                crypt_table[index2] = (temp1 | temp2);
-            }
-        }
-    }
-}
-
-void __mpqlib_encrypt(void *_data, uint32_t length, uint32_t key, char disable_input_swapping)
-{
-    char * data = (char *) _data;
-    uint32_t *buffer32 = (uint32_t *) data;
-    uint32_t seed = 0xEEEEEEEE;
-    uint32_t ch;
-    
-    assert(crypt_table_initialized);
-    assert(data);
-
-   // Round to 4 bytes
-    length = length / 4;
-
-   // We duplicate the loop to avoid costly branches
-    if (disable_input_swapping) {
-        while (length-- > 0) {
-            seed += crypt_table[0x400 + (key & 0xFF)];
-            ch = *buffer32 ^ (key + seed);
-
-            key = ((~key << 0x15) + 0x11111111) | (key >> 0x0B);
-            seed = *buffer32 + seed + (seed << 5) + 3;
-
-            *buffer32++ = ch;
-        }
-    } else {
-        while (length-- > 0) {
-            seed += crypt_table[0x400 + (key & 0xFF)];
-            ch = *buffer32 ^ (key + seed);
-
-            key = ((~key << 0x15) + 0x11111111) | (key >> 0x0B);
-            seed = *buffer32 + seed + (seed << 5) + 3;
-
-            *buffer32++ = ch;
-        }
-    }
-}
-
-void __mpqlib_decrypt(void *_data, uint32_t length, uint32_t key, char disable_output_swapping)
-{
-    char * data = (char *) _data;
-    uint32_t *buffer32 = (uint32_t *) data;
-    uint32_t seed = 0xEEEEEEEE;
-    uint32_t ch;
-
-    assert(crypt_table_initialized);
-    assert(data);
-
-   // Round to 4 bytes
-    length = length / 4;
-
-    if (disable_output_swapping) {
-        while (length-- > 0) {
-            ch = *buffer32;
-
-            seed += crypt_table[0x400 + (key & 0xFF)];
-            ch = ch ^ (key + seed);
-
-            key = ((~key << 0x15) + 0x11111111) | (key >> 0x0B);
-            seed = ch + seed + (seed << 5) + 3;
-
-            *buffer32++ = ch;
-        }
-
-    } else {
-        while (length-- > 0) {
-            ch = *buffer32;
-
-            seed += crypt_table[0x400 + (key & 0xFF)];
-            ch = ch ^ (key + seed);
-
-            key = ((~key << 0x15) + 0x11111111) | (key >> 0x0B);
-            seed = ch + seed + (seed << 5) + 3;
-
-            *buffer32++ = ch;
-        }
-    }
-}
-
-uint32_t __mpqlib_hash_cstring(const char *string, uint32_t type)
-{
-    uint32_t seed1 = 0x7FED7FED;
-    uint32_t seed2 = 0xEEEEEEEE;
-    uint32_t shifted_type = (type << 8);
-    int32_t ch;
-
-    assert(crypt_table_initialized);
-    assert(string);
-
-    while (*string != 0) {
-        ch = *string++;
-        if (ch > 0x60 && ch < 0x7b)
-            ch -= 0x20;
-
-        seed1 = crypt_table[shifted_type + ch] ^ (seed1 + seed2);
-        seed2 = ch + seed1 + seed2 + (seed2 << 5) + 3;
-    }
-
-    return seed1;
-}
-
-uint32_t __mpqlib_hash_data(const char *data, uint32_t length, uint32_t type)
-{
-    uint32_t seed1 = 0x7FED7FED;
-    uint32_t seed2 = 0xEEEEEEEE;
-    uint32_t shifted_type = (type << 8);
-    int32_t ch;
-
-    assert(crypt_table_initialized);
-    assert(data);
-
-    while (length > 0) {
-        ch = *data++;
-
-        seed1 = crypt_table[shifted_type + ch] ^ (seed1 + seed2);
-        seed2 = ch + seed1 + seed2 + (seed2 << 5) + 3;
-        length--;
-    }
-
-    return seed1;
-}
-- 
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