v3.8.0

algo/haval/haval-hash-4way.h

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+/* $Id: sph_haval.h 218 2010-06-08 17:06:34Z tp $ */
+/**
+ * HAVAL interface.
+ *
+ * HAVAL is actually a family of 15 hash functions, depending on whether
+ * the internal computation uses 3, 4 or 5 passes, and on the output
+ * length, which is 128, 160, 192, 224 or 256 bits. This implementation
+ * provides interface functions for all 15, which internally map to
+ * three cores (depending on the number of passes). Note that output
+ * lengths other than 256 bits are not obtained by a simple truncation
+ * of a longer result; the requested length is encoded within the
+ * padding data.
+ *
+ * HAVAL was published in: Yuliang Zheng, Josef Pieprzyk and Jennifer
+ * Seberry: "HAVAL -- a one-way hashing algorithm with variable length
+ * of output", Advances in Cryptology -- AUSCRYPT'92, Lecture Notes in
+ * Computer Science, Vol.718, pp.83-104, Springer-Verlag, 1993.
+ *
+ * This paper, and a reference implementation, are available on the
+ * Calyptix web site: http://labs.calyptix.com/haval.php
+ *
+ * The HAVAL reference paper is quite unclear on the data encoding
+ * details, i.e. endianness (both byte order within a 32-bit word, and
+ * word order within a message block). This implementation has been
+ * made compatible with the reference implementation referenced above.
+ *
+ * @warning   A collision for HAVAL-128/3 (HAVAL with three passes and
+ * 128-bit output) has been published; this function is thus considered
+ * as cryptographically broken. The status for other variants is unclear;
+ * use only with care.
+ *
+ * ==========================(LICENSE BEGIN)============================
+ *
+ * Copyright (c) 2007-2010  Projet RNRT SAPHIR
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * ===========================(LICENSE END)=============================
+ *
+ * @file     sph_haval.h
+ * @author   Thomas Pornin <thomas.pornin@cryptolog.com>
+ */
+
+#ifndef HAVAL_HASH_4WAY_H__
+#define HAVAL_HASH_4WAY_H__
+
+#if defined(__AVX__)
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
+#include <stddef.h>
+#include "algo/sha/sph_types.h"
+#include "avxdefs.h"
+
+#define SPH_SIZE_haval256_5   256
+
+typedef struct {
+   __m128i buf[32];
+   __m128i s0, s1, s2, s3, s4, s5, s6, s7;
+   unsigned olen, passes;
+   sph_u32 count_high, count_low;
+} haval_4way_context;
+
+typedef haval_4way_context haval256_5_4way_context;
+
+void haval256_5_4way_init( void *cc );
+
+void haval256_5_4way( void *cc, const void *data, size_t len );
+
+void haval256_5_4way_close( void *cc, void *dst );
+
+#ifdef __cplusplus
+}
+#endif
+#endif
+#endif