diff options
| author | Vadim Dashevskiy <watcherhd@gmail.com> | 2012-05-15 10:38:20 +0000 |
|---|---|---|
| committer | Vadim Dashevskiy <watcherhd@gmail.com> | 2012-05-15 10:38:20 +0000 |
| commit | 48540940b6c28bb4378abfeb500ec45a625b37b6 (patch) | |
| tree | 2ef294c0763e802f91d868bdef4229b6868527de /plugins/FlashAvatars/TigerHash.h | |
| parent | 5c350913f011e119127baeb32a6aedeb4f0d33bc (diff) | |
initial commit
git-svn-id: http://svn.miranda-ng.org/main/trunk@2 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
Diffstat (limited to 'plugins/FlashAvatars/TigerHash.h')
| -rw-r--r-- | plugins/FlashAvatars/TigerHash.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/plugins/FlashAvatars/TigerHash.h b/plugins/FlashAvatars/TigerHash.h new file mode 100644 index 0000000000..8704ed552a --- /dev/null +++ b/plugins/FlashAvatars/TigerHash.h @@ -0,0 +1,112 @@ +/*
+ * Copyright (C) 2001-2006 Jacek Sieka, arnetheduck on gmail point com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#if !defined(TIGER_HASH_H)
+#define TIGER_HASH_H
+
+#include <tchar.h>
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+typedef unsigned __int8 uint8_t;
+typedef unsigned __int32 uint32_t;
+typedef unsigned __int64 uint64_t;
+
+#ifdef __GNUC__
+#define _ULL(x) x##ull
+#else
+#define _ULL(x) x
+#endif
+
+class TigerHash {
+public:
+ /** Hash size in bytes */
+ enum { HASH_SIZE = 24 };
+
+ TigerHash() : pos(0) {
+ res[0]=_ULL(0x0123456789ABCDEF);
+ res[1]=_ULL(0xFEDCBA9876543210);
+ res[2]=_ULL(0xF096A5B4C3B2E187);
+ }
+
+ ~TigerHash() {
+ }
+
+ TCHAR* toBase32(TCHAR dst[((HASH_SIZE * 8) / 5) + 2]) {
+ const TCHAR base32Alphabet[] = _T("ABCDEFGHIJKLMNOPQRSTUVWXYZ234567");
+ uint8_t hash[HASH_SIZE];
+ memcpy(hash, res, HASH_SIZE);
+
+ // Code snagged from the bitzi bitcollider
+ size_t i, index;
+ uint8_t word;
+ //wchar_t* dst = new wchar_t[];
+ memset(dst, 0, sizeof(dst));
+
+ int j = 0;
+ for(i = 0, index = 0; i < HASH_SIZE; j++) {
+ /* Is the current word going to span a byte boundary? */
+ if (index > 3) {
+ word = (uint8_t)(hash[i] & (0xFF >> index));
+ index = (index + 5) % 8;
+ word <<= index;
+ if ((i + 1) < HASH_SIZE)
+ word |= hash[i + 1] >> (8 - index);
+
+ i++;
+ } else {
+ word = (uint8_t)(hash[i] >> (8 - (index + 5))) & 0x1F;
+ index = (index + 5) % 8;
+ if (index == 0)
+ i++;
+ }
+
+ //dcassert(word < 32);
+ dst[j] = base32Alphabet[word];
+ }
+ dst[39] = NULL;
+ return dst;
+ }
+
+ /** Calculates the Tiger hash of the data. */
+ void update(const void* data, size_t len);
+ /** Call once all data has been processed. */
+ uint8_t* finalize();
+
+private:
+ enum { BLOCK_SIZE = 512/8 };
+ /** 512 bit blocks for the compress function */
+ uint8_t tmp[512/8];
+ /** State / final hash value */
+ uint64_t res[3];
+ /** Total number of bytes compressed */
+ uint64_t pos;
+ /** S boxes */
+ static uint64_t table[];
+
+ void tigerCompress(const uint64_t* data, uint64_t state[3]);
+};
+
+#endif // !defined(TIGER_HASH_H)
+
+/**
+ * @file
+ * $Id: TigerHash.h,v 1.10 2006/10/13 20:04:32 bigmuscle Exp $
+ */
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