From aeb420d9f20f0973d428b5de0bd19f83c684bf54 Mon Sep 17 00:00:00 2001
From: pixel <pixel>
Date: Tue, 29 Jan 2008 10:13:13 +0000
Subject: Smoothing up win32 fixes.

---
 MPQCryptography.c | 101 +++---------------------------------------------------
 1 file changed, 4 insertions(+), 97 deletions(-)

(limited to 'MPQCryptography.c')

diff --git a/MPQCryptography.c b/MPQCryptography.c
index 6c33e55..e18e279 100644
--- a/MPQCryptography.c
+++ b/MPQCryptography.c
@@ -9,48 +9,21 @@
 
 /*
  * 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 <zlib.h>
-
-#ifdef USE_SSL
-#include <openssl/err.h>
-#include <openssl/evp.h>
-#include <openssl/md5.h>
-#include <openssl/obj_mac.h>
-#include <openssl/sha.h>
-#endif
 
 #include "MPQCryptography.h"
 
-#ifdef WIN32
-#include "stdint.h"
-#else
-#include "inttypes.h"
-#endif
-
 static int crypt_table_initialized = 0;
 static uint32_t crypt_table[0x500];
 
 /****TODO****/
 /* Re-implement various endianess fixes. */
 
-#ifdef USE_SSL
-static void memrev(unsigned char *buf, size_t count)
-{
-    unsigned char *r;
-
-    for (r = buf + count - 1; buf < r; buf++, r--) {
-        *buf ^= *r;
-        *r ^= *buf;
-        *buf ^= *r;
-    }
-}
-#endif
-
 const uint32_t *__mpqlib_get_cryptography_table()
 {
     assert(crypt_table_initialized);
@@ -82,18 +55,11 @@ void __mpqlib_init_cryptography()
             }
         }
     }
-   // Load up OpenSSL
-#ifdef USE_SSL
-    OpenSSL_add_all_digests();
-    OpenSSL_add_all_algorithms();
-    OpenSSL_add_all_ciphers();
-    ERR_load_crypto_strings();
-#endif
 }
 
-void __mpqlib_encrypt(void *_data, uint32_t length, uint32_t key, bool disable_input_swapping)
+void __mpqlib_encrypt(void *_data, uint32_t length, uint32_t key, char disable_input_swapping)
 {
-	char * data = (char *) _data;
+    char * data = (char *) _data;
     uint32_t *buffer32 = (uint32_t *) data;
     uint32_t seed = 0xEEEEEEEE;
     uint32_t ch;
@@ -128,7 +94,7 @@ void __mpqlib_encrypt(void *_data, uint32_t length, uint32_t key, bool disable_i
     }
 }
 
-void __mpqlib_decrypt(void *_data, uint32_t length, uint32_t key, bool disable_output_swapping)
+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;
@@ -211,62 +177,3 @@ uint32_t __mpqlib_hash_data(const char *data, uint32_t length, uint32_t type)
 
     return seed1;
 }
-
-void __mpqlib_crc32(const unsigned char *buffer, uint32_t length, uint32_t * crc, uint32_t flags)
-{
-    uint32_t local_crc = 0;
-    const uint32_t *crc_table = (uint32_t *) get_crc_table();
-    const unsigned char *buffer_end = buffer + length;
-
-    if (crc)
-        local_crc = *crc;
-    if (flags & __MPQLIB_CRC_INIT)
-        local_crc = 0xFFFFFFFF;
-
-    if (flags & __MPQLIB_CRC_UPDATE) {
-        while (buffer < buffer_end) {
-            local_crc = ((local_crc >> 8) & 0x00FFFFFF) ^ crc_table[(local_crc ^ *buffer) & 0xFF];
-            buffer++;
-        }
-    }
-
-    if (flags & __MPQLIB_CRC_FINALIZE)
-        local_crc = local_crc ^ 0xFFFFFFFF;
-    if (crc)
-        *crc = local_crc;
-}
-
-#ifdef USE_SSL
-int __mpqlib_verify_weak_signature(RSA * public_key, const unsigned char *signature, const unsigned char *digest)
-{
-    unsigned char reversed_signature[__MPQLIB_WEAK_SIGNATURE_SIZE];
-
-    memcpy(reversed_signature, signature + 8, __MPQLIB_WEAK_SIGNATURE_SIZE);
-    memrev(reversed_signature, __MPQLIB_WEAK_SIGNATURE_SIZE);
-
-    return RSA_verify(NID_md5, digest, MD5_DIGEST_LENGTH, reversed_signature, __MPQLIB_WEAK_SIGNATURE_SIZE, public_key);
-}
-
-int __mpqlib_verify_strong_signature(RSA * public_key, const unsigned char *signature, const unsigned char *digest)
-{
-    unsigned char reversed_signature[__MPQLIB_STRONG_SIGNATURE_SIZE];
-
-    memcpy(reversed_signature, signature + 4, __MPQLIB_STRONG_SIGNATURE_SIZE);
-    memrev(reversed_signature, __MPQLIB_STRONG_SIGNATURE_SIZE);
-
-    unsigned char real_digest[__MPQLIB_STRONG_SIGNATURE_SIZE];
-
-    memset(real_digest, 0xbb, sizeof(real_digest));
-    real_digest[0] = 0x0b;
-
-    uint32_t digest_offset = sizeof(real_digest) - SHA_DIGEST_LENGTH;
-
-    memcpy(real_digest + digest_offset, digest, SHA_DIGEST_LENGTH);
-    memrev(real_digest + digest_offset, SHA_DIGEST_LENGTH);
-
-    RSA_public_decrypt(__MPQLIB_STRONG_SIGNATURE_SIZE, reversed_signature, reversed_signature, public_key, RSA_NO_PADDING);
-    unsigned long error = ERR_get_error();
-
-    return (!error && memcmp(reversed_signature, real_digest, __MPQLIB_STRONG_SIGNATURE_SIZE) == 0);
-}
-#endif
-- 
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