GR support

Author: MoneroOcean

xmrig/crypto/ghostrider/md_helper.c

@@ -0,0 +1,346 @@
+/* $Id: md_helper.c 216 2010-06-08 09:46:57Z tp $ */
+/*
+ * This file contains some functions which implement the external data
+ * handling and padding for Merkle-Damgard hash functions which follow
+ * the conventions set out by MD4 (little-endian) or SHA-1 (big-endian).
+ *
+ * API: this file is meant to be included, not compiled as a stand-alone
+ * file. Some macros must be defined:
+ *   RFUN   name for the round function
+ *   HASH   "short name" for the hash function
+ *   BE32   defined for big-endian, 32-bit based (e.g. SHA-1)
+ *   LE32   defined for little-endian, 32-bit based (e.g. MD5)
+ *   BE64   defined for big-endian, 64-bit based (e.g. SHA-512)
+ *   LE64   defined for little-endian, 64-bit based (no example yet)
+ *   PW01   if defined, append 0x01 instead of 0x80 (for Tiger)
+ *   BLEN   if defined, length of a message block (in bytes)
+ *   PLW1   if defined, length is defined on one 64-bit word only (for Tiger)
+ *   PLW4   if defined, length is defined on four 64-bit words (for WHIRLPOOL)
+ *   SVAL   if defined, reference to the context state information
+ *
+ * BLEN is used when a message block is not 16 (32-bit or 64-bit) words:
+ * this is used for instance for Tiger, which works on 64-bit words but
+ * uses 512-bit message blocks (eight 64-bit words). PLW1 and PLW4 are
+ * ignored if 32-bit words are used; if 64-bit words are used and PLW1 is
+ * set, then only one word (64 bits) will be used to encode the input
+ * message length (in bits), otherwise two words will be used (as in
+ * SHA-384 and SHA-512). If 64-bit words are used and PLW4 is defined (but
+ * not PLW1), four 64-bit words will be used to encode the message length
+ * (in bits). Note that regardless of those settings, only 64-bit message
+ * lengths are supported (in bits): messages longer than 2 Exabytes will be
+ * improperly hashed (this is unlikely to happen soon: 2 Exabytes is about
+ * 2 millions Terabytes, which is huge).
+ *
+ * If CLOSE_ONLY is defined, then this file defines only the sph_XXX_close()
+ * function. This is used for Tiger2, which is identical to Tiger except
+ * when it comes to the padding (Tiger2 uses the standard 0x80 byte instead
+ * of the 0x01 from original Tiger).
+ *
+ * The RFUN function is invoked with two arguments, the first pointing to
+ * aligned data (as a "const void *"), the second being state information
+ * from the context structure. By default, this state information is the
+ * "val" field from the context, and this field is assumed to be an array
+ * of words ("sph_u32" or "sph_u64", depending on BE32/LE32/BE64/LE64).
+ * from the context structure. The "val" field can have any type, except
+ * for the output encoding which assumes that it is an array of "sph_u32"
+ * values. By defining NO_OUTPUT, this last step is deactivated; the
+ * includer code is then responsible for writing out the hash result. When
+ * NO_OUTPUT is defined, the third parameter to the "close()" function is
+ * ignored.
+ *
+ * ==========================(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)=============================
+ *
+ * @author   Thomas Pornin <thomas.pornin@cryptolog.com>
+ */
+
+#ifdef _MSC_VER
+#pragma warning (disable: 4146)
+#endif
+
+#undef SPH_XCAT
+#define SPH_XCAT(a, b)     SPH_XCAT_(a, b)
+#undef SPH_XCAT_
+#define SPH_XCAT_(a, b)    a ## b
+
+#undef SPH_BLEN
+#undef SPH_WLEN
+#if defined BE64 || defined LE64
+#define SPH_BLEN    128U
+#define SPH_WLEN      8U
+#else
+#define SPH_BLEN     64U
+#define SPH_WLEN      4U
+#endif
+
+#ifdef BLEN
+#undef SPH_BLEN
+#define SPH_BLEN    BLEN
+#endif
+
+#undef SPH_MAXPAD
+#if defined PLW1
+#define SPH_MAXPAD   (SPH_BLEN - SPH_WLEN)
+#elif defined PLW4
+#define SPH_MAXPAD   (SPH_BLEN - (SPH_WLEN << 2))
+#else
+#define SPH_MAXPAD   (SPH_BLEN - (SPH_WLEN << 1))
+#endif
+
+#undef SPH_VAL
+#undef SPH_NO_OUTPUT
+#ifdef SVAL
+#define SPH_VAL         SVAL
+#define SPH_NO_OUTPUT   1
+#else
+#define SPH_VAL   sc->val
+#endif
+
+#ifndef CLOSE_ONLY
+
+#ifdef SPH_UPTR
+static void
+SPH_XCAT(HASH, _short)(void *cc, const void *data, size_t len)
+#else
+void
+SPH_XCAT(sph_, HASH)(void *cc, const void *data, size_t len)
+#endif
+{
+	SPH_XCAT(sph_, SPH_XCAT(HASH, _context)) *sc;
+	size_t current;
+
+	sc = cc;
+#if SPH_64
+	current = (unsigned)sc->count & (SPH_BLEN - 1U);
+#else
+	current = (unsigned)sc->count_low & (SPH_BLEN - 1U);
+#endif
+	while (len > 0) {
+		size_t clen;
+#if !SPH_64
+		sph_u32 clow, clow2;
+#endif
+
+		clen = SPH_BLEN - current;
+		if (clen > len)
+			clen = len;
+		memcpy(sc->buf + current, data, clen);
+		data = (const unsigned char *)data + clen;
+		current += clen;
+		len -= clen;
+		if (current == SPH_BLEN) {
+			RFUN(sc->buf, SPH_VAL);
+			current = 0;
+		}
+#if SPH_64
+		sc->count += clen;
+#else
+		clow = sc->count_low;
+		clow2 = SPH_T32(clow + clen);
+		sc->count_low = clow2;
+		if (clow2 < clow)
+			sc->count_high ++;
+#endif
+	}
+}
+
+#ifdef SPH_UPTR
+void
+SPH_XCAT(sph_, HASH)(void *cc, const void *data, size_t len)
+{
+	SPH_XCAT(sph_, SPH_XCAT(HASH, _context)) *sc;
+	unsigned current;
+	size_t orig_len;
+#if !SPH_64
+	sph_u32 clow, clow2;
+#endif
+
+	if (len < (2 * SPH_BLEN)) {
+		SPH_XCAT(HASH, _short)(cc, data, len);
+		return;
+	}
+	sc = cc;
+#if SPH_64
+	current = (unsigned)sc->count & (SPH_BLEN - 1U);
+#else
+	current = (unsigned)sc->count_low & (SPH_BLEN - 1U);
+#endif
+	if (current > 0) {
+		unsigned t;
+
+		t = SPH_BLEN - current;
+		SPH_XCAT(HASH, _short)(cc, data, t);
+		data = (const unsigned char *)data + t;
+		len -= t;
+	}
+#if !SPH_UNALIGNED
+	if (((SPH_UPTR)data & (SPH_WLEN - 1U)) != 0) {
+		SPH_XCAT(HASH, _short)(cc, data, len);
+		return;
+	}
+#endif
+	orig_len = len;
+	while (len >= SPH_BLEN) {
+		RFUN(data, SPH_VAL);
+		len -= SPH_BLEN;
+		data = (const unsigned char *)data + SPH_BLEN;
+	}
+	if (len > 0)
+		memcpy(sc->buf, data, len);
+#if SPH_64
+	sc->count += (sph_u64)orig_len;
+#else
+	clow = sc->count_low;
+	clow2 = SPH_T32(clow + orig_len);
+	sc->count_low = clow2;
+	if (clow2 < clow)
+		sc->count_high ++;
+	/*
+	 * This code handles the improbable situation where "size_t" is
+	 * greater than 32 bits, and yet we do not have a 64-bit type.
+	 */
+	orig_len >>= 12;
+	orig_len >>= 10;
+	orig_len >>= 10;
+	sc->count_high += orig_len;
+#endif
+}
+#endif
+
+#endif
+
+/*
+ * Perform padding and produce result. The context is NOT reinitialized
+ * by this function.
+ */
+static void
+SPH_XCAT(HASH, _addbits_and_close)(void *cc,
+	unsigned ub, unsigned n, void *dst, unsigned rnum)
+{
+	SPH_XCAT(sph_, SPH_XCAT(HASH, _context)) *sc;
+	unsigned current, u;
+#if !SPH_64
+	sph_u32 low, high;
+#endif
+
+	sc = cc;
+#if SPH_64
+	current = (unsigned)sc->count & (SPH_BLEN - 1U);
+#else
+	current = (unsigned)sc->count_low & (SPH_BLEN - 1U);
+#endif
+#ifdef PW01
+	sc->buf[current ++] = (0x100 | (ub & 0xFF)) >> (8 - n);
+#else
+	{
+		unsigned z;
+
+		z = 0x80 >> n;
+		sc->buf[current ++] = ((ub & -z) | z) & 0xFF;
+	}
+#endif
+	if (current > SPH_MAXPAD) {
+		memset(sc->buf + current, 0, SPH_BLEN - current);
+		RFUN(sc->buf, SPH_VAL);
+		memset(sc->buf, 0, SPH_MAXPAD);
+	} else {
+		memset(sc->buf + current, 0, SPH_MAXPAD - current);
+	}
+#if defined BE64
+#if defined PLW1
+	sph_enc64be_aligned(sc->buf + SPH_MAXPAD,
+		SPH_T64(sc->count << 3) + (sph_u64)n);
+#elif defined PLW4
+	memset(sc->buf + SPH_MAXPAD, 0, 2 * SPH_WLEN);
+	sph_enc64be_aligned(sc->buf + SPH_MAXPAD + 2 * SPH_WLEN,
+		sc->count >> 61);
+	sph_enc64be_aligned(sc->buf + SPH_MAXPAD + 3 * SPH_WLEN,
+		SPH_T64(sc->count << 3) + (sph_u64)n);
+#else
+	sph_enc64be_aligned(sc->buf + SPH_MAXPAD, sc->count >> 61);
+	sph_enc64be_aligned(sc->buf + SPH_MAXPAD + SPH_WLEN,
+		SPH_T64(sc->count << 3) + (sph_u64)n);
+#endif
+#elif defined LE64
+#if defined PLW1
+	sph_enc64le_aligned(sc->buf + SPH_MAXPAD,
+		SPH_T64(sc->count << 3) + (sph_u64)n);
+#elif defined PLW1
+	sph_enc64le_aligned(sc->buf + SPH_MAXPAD,
+		SPH_T64(sc->count << 3) + (sph_u64)n);
+	sph_enc64le_aligned(sc->buf + SPH_MAXPAD + SPH_WLEN, sc->count >> 61);
+	memset(sc->buf + SPH_MAXPAD + 2 * SPH_WLEN, 0, 2 * SPH_WLEN);
+#else
+	sph_enc64le_aligned(sc->buf + SPH_MAXPAD,
+		SPH_T64(sc->count << 3) + (sph_u64)n);
+	sph_enc64le_aligned(sc->buf + SPH_MAXPAD + SPH_WLEN, sc->count >> 61);
+#endif
+#else
+#if SPH_64
+#ifdef BE32
+	sph_enc64be_aligned(sc->buf + SPH_MAXPAD,
+		SPH_T64(sc->count << 3) + (sph_u64)n);
+#else
+	sph_enc64le_aligned(sc->buf + SPH_MAXPAD,
+		SPH_T64(sc->count << 3) + (sph_u64)n);
+#endif
+#else
+	low = sc->count_low;
+	high = SPH_T32((sc->count_high << 3) | (low >> 29));
+	low = SPH_T32(low << 3) + (sph_u32)n;
+#ifdef BE32
+	sph_enc32be(sc->buf + SPH_MAXPAD, high);
+	sph_enc32be(sc->buf + SPH_MAXPAD + SPH_WLEN, low);
+#else
+	sph_enc32le(sc->buf + SPH_MAXPAD, low);
+	sph_enc32le(sc->buf + SPH_MAXPAD + SPH_WLEN, high);
+#endif
+#endif
+#endif
+	RFUN(sc->buf, SPH_VAL);
+#ifdef SPH_NO_OUTPUT
+	(void)dst;
+	(void)rnum;
+	(void)u;
+#else
+	for (u = 0; u < rnum; u ++) {
+#if defined BE64
+		sph_enc64be((unsigned char *)dst + 8 * u, sc->val[u]);
+#elif defined LE64
+		sph_enc64le((unsigned char *)dst + 8 * u, sc->val[u]);
+#elif defined BE32
+		sph_enc32be((unsigned char *)dst + 4 * u, sc->val[u]);
+#else
+		sph_enc32le((unsigned char *)dst + 4 * u, sc->val[u]);
+#endif
+	}
+#endif
+}
+
+static void
+SPH_XCAT(HASH, _close)(void *cc, void *dst, unsigned rnum)
+{
+	SPH_XCAT(HASH, _addbits_and_close)(cc, 0, 0, dst, rnum);
+}