--- /dev/null
+/*
+ * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/*****************************************************************************
+* *
+* Copyright (c) 2012, Intel Corporation *
+* *
+* All rights reserved. *
+* *
+* Redistribution and use in source and binary forms, with or without *
+* modification, are permitted provided that the following conditions are *
+* met: *
+* *
+* * Redistributions of source code must retain the above copyright *
+* notice, this list of conditions and the following disclaimer. *
+* *
+* * Redistributions in binary form must reproduce the above copyright *
+* notice, this list of conditions and the following disclaimer in the *
+* documentation and/or other materials provided with the *
+* distribution. *
+* *
+* * Neither the name of the Intel Corporation nor the names of its *
+* contributors may be used to endorse or promote products derived from *
+* this software without specific prior written permission. *
+* *
+* *
+* THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION ""AS IS"" AND ANY *
+* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE *
+* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR *
+* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR *
+* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
+* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
+* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
+* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
+* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
+* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
+* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
+* *
+******************************************************************************
+* Developers and authors: *
+* Shay Gueron (1, 2), and Vlad Krasnov (1) *
+* (1) Intel Corporation, Israel Development Center, Haifa, Israel *
+* (2) University of Haifa, Israel *
+*****************************************************************************/
+
+#include <openssl/opensslconf.h>
+#include "rsaz_exp.h"
+
+#ifndef RSAZ_ENABLED
+NON_EMPTY_TRANSLATION_UNIT
+#else
+
+/*
+ * See crypto/bn/asm/rsaz-avx2.pl for further details.
+ */
+void rsaz_1024_norm2red_avx2(void *red, const void *norm);
+void rsaz_1024_mul_avx2(void *ret, const void *a, const void *b,
+ const void *n, BN_ULONG k);
+void rsaz_1024_sqr_avx2(void *ret, const void *a, const void *n, BN_ULONG k,
+ int cnt);
+void rsaz_1024_scatter5_avx2(void *tbl, const void *val, int i);
+void rsaz_1024_gather5_avx2(void *val, const void *tbl, int i);
+void rsaz_1024_red2norm_avx2(void *norm, const void *red);
+
+#if defined(__GNUC__)
+# define ALIGN64 __attribute__((aligned(64)))
+#elif defined(_MSC_VER)
+# define ALIGN64 __declspec(align(64))
+#elif defined(__SUNPRO_C)
+# define ALIGN64
+# pragma align 64(one,two80)
+#else
+/* not fatal, might hurt performance a little */
+# define ALIGN64
+#endif
+
+ALIGN64 static const BN_ULONG one[40] = {
+ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+ALIGN64 static const BN_ULONG two80[40] = {
+ 0, 0, 1 << 22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm[16],
+ const BN_ULONG base_norm[16],
+ const BN_ULONG exponent[16],
+ const BN_ULONG m_norm[16], const BN_ULONG RR[16],
+ BN_ULONG k0)
+{
+ unsigned char storage[320 * 3 + 32 * 9 * 16 + 64]; /* 5.5KB */
+ unsigned char *p_str = storage + (64 - ((size_t)storage % 64));
+ unsigned char *a_inv, *m, *result;
+ unsigned char *table_s = p_str + 320 * 3;
+ unsigned char *R2 = table_s; /* borrow */
+ int index;
+ int wvalue;
+
+ if ((((size_t)p_str & 4095) + 320) >> 12) {
+ result = p_str;
+ a_inv = p_str + 320;
+ m = p_str + 320 * 2; /* should not cross page */
+ } else {
+ m = p_str; /* should not cross page */
+ result = p_str + 320;
+ a_inv = p_str + 320 * 2;
+ }
+
+ rsaz_1024_norm2red_avx2(m, m_norm);
+ rsaz_1024_norm2red_avx2(a_inv, base_norm);
+ rsaz_1024_norm2red_avx2(R2, RR);
+
+ rsaz_1024_mul_avx2(R2, R2, R2, m, k0);
+ rsaz_1024_mul_avx2(R2, R2, two80, m, k0);
+
+ /* table[0] = 1 */
+ rsaz_1024_mul_avx2(result, R2, one, m, k0);
+ /* table[1] = a_inv^1 */
+ rsaz_1024_mul_avx2(a_inv, a_inv, R2, m, k0);
+
+ rsaz_1024_scatter5_avx2(table_s, result, 0);
+ rsaz_1024_scatter5_avx2(table_s, a_inv, 1);
+
+ /* table[2] = a_inv^2 */
+ rsaz_1024_sqr_avx2(result, a_inv, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 2);
+#if 0
+ /* this is almost 2x smaller and less than 1% slower */
+ for (index = 3; index < 32; index++) {
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, index);
+ }
+#else
+ /* table[4] = a_inv^4 */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 4);
+ /* table[8] = a_inv^8 */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 8);
+ /* table[16] = a_inv^16 */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 16);
+ /* table[17] = a_inv^17 */
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 17);
+
+ /* table[3] */
+ rsaz_1024_gather5_avx2(result, table_s, 2);
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 3);
+ /* table[6] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 6);
+ /* table[12] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 12);
+ /* table[24] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 24);
+ /* table[25] */
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 25);
+
+ /* table[5] */
+ rsaz_1024_gather5_avx2(result, table_s, 4);
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 5);
+ /* table[10] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 10);
+ /* table[20] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 20);
+ /* table[21] */
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 21);
+
+ /* table[7] */
+ rsaz_1024_gather5_avx2(result, table_s, 6);
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 7);
+ /* table[14] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 14);
+ /* table[28] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 28);
+ /* table[29] */
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 29);
+
+ /* table[9] */
+ rsaz_1024_gather5_avx2(result, table_s, 8);
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 9);
+ /* table[18] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 18);
+ /* table[19] */
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 19);
+
+ /* table[11] */
+ rsaz_1024_gather5_avx2(result, table_s, 10);
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 11);
+ /* table[22] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 22);
+ /* table[23] */
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 23);
+
+ /* table[13] */
+ rsaz_1024_gather5_avx2(result, table_s, 12);
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 13);
+ /* table[26] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 26);
+ /* table[27] */
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 27);
+
+ /* table[15] */
+ rsaz_1024_gather5_avx2(result, table_s, 14);
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 15);
+ /* table[30] */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 1);
+ rsaz_1024_scatter5_avx2(table_s, result, 30);
+ /* table[31] */
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ rsaz_1024_scatter5_avx2(table_s, result, 31);
+#endif
+
+ /* load first window */
+ p_str = (unsigned char *)exponent;
+ wvalue = p_str[127] >> 3;
+ rsaz_1024_gather5_avx2(result, table_s, wvalue);
+
+ index = 1014;
+
+ while (index > -1) { /* loop for the remaining 127 windows */
+
+ rsaz_1024_sqr_avx2(result, result, m, k0, 5);
+
+ wvalue = (p_str[(index / 8) + 1] << 8) | p_str[index / 8];
+ wvalue = (wvalue >> (index % 8)) & 31;
+ index -= 5;
+
+ rsaz_1024_gather5_avx2(a_inv, table_s, wvalue); /* borrow a_inv */
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+ }
+
+ /* square four times */
+ rsaz_1024_sqr_avx2(result, result, m, k0, 4);
+
+ wvalue = p_str[0] & 15;
+
+ rsaz_1024_gather5_avx2(a_inv, table_s, wvalue); /* borrow a_inv */
+ rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
+
+ /* from Montgomery */
+ rsaz_1024_mul_avx2(result, result, one, m, k0);
+
+ rsaz_1024_red2norm_avx2(result_norm, result);
+
+ OPENSSL_cleanse(storage, sizeof(storage));
+}
+
+/*
+ * See crypto/bn/rsaz-x86_64.pl for further details.
+ */
+void rsaz_512_mul(void *ret, const void *a, const void *b, const void *n,
+ BN_ULONG k);
+void rsaz_512_mul_scatter4(void *ret, const void *a, const void *n,
+ BN_ULONG k, const void *tbl, unsigned int power);
+void rsaz_512_mul_gather4(void *ret, const void *a, const void *tbl,
+ const void *n, BN_ULONG k, unsigned int power);
+void rsaz_512_mul_by_one(void *ret, const void *a, const void *n, BN_ULONG k);
+void rsaz_512_sqr(void *ret, const void *a, const void *n, BN_ULONG k,
+ int cnt);
+void rsaz_512_scatter4(void *tbl, const BN_ULONG *val, int power);
+void rsaz_512_gather4(BN_ULONG *val, const void *tbl, int power);
+
+void RSAZ_512_mod_exp(BN_ULONG result[8],
+ const BN_ULONG base[8], const BN_ULONG exponent[8],
+ const BN_ULONG m[8], BN_ULONG k0, const BN_ULONG RR[8])
+{
+ unsigned char storage[16 * 8 * 8 + 64 * 2 + 64]; /* 1.2KB */
+ unsigned char *table = storage + (64 - ((size_t)storage % 64));
+ BN_ULONG *a_inv = (BN_ULONG *)(table + 16 * 8 * 8);
+ BN_ULONG *temp = (BN_ULONG *)(table + 16 * 8 * 8 + 8 * 8);
+ unsigned char *p_str = (unsigned char *)exponent;
+ int index;
+ unsigned int wvalue;
+
+ /* table[0] = 1_inv */
+ temp[0] = 0 - m[0];
+ temp[1] = ~m[1];
+ temp[2] = ~m[2];
+ temp[3] = ~m[3];
+ temp[4] = ~m[4];
+ temp[5] = ~m[5];
+ temp[6] = ~m[6];
+ temp[7] = ~m[7];
+ rsaz_512_scatter4(table, temp, 0);
+
+ /* table [1] = a_inv^1 */
+ rsaz_512_mul(a_inv, base, RR, m, k0);
+ rsaz_512_scatter4(table, a_inv, 1);
+
+ /* table [2] = a_inv^2 */
+ rsaz_512_sqr(temp, a_inv, m, k0, 1);
+ rsaz_512_scatter4(table, temp, 2);
+
+ for (index = 3; index < 16; index++)
+ rsaz_512_mul_scatter4(temp, a_inv, m, k0, table, index);
+
+ /* load first window */
+ wvalue = p_str[63];
+
+ rsaz_512_gather4(temp, table, wvalue >> 4);
+ rsaz_512_sqr(temp, temp, m, k0, 4);
+ rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue & 0xf);
+
+ for (index = 62; index >= 0; index--) {
+ wvalue = p_str[index];
+
+ rsaz_512_sqr(temp, temp, m, k0, 4);
+ rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue >> 4);
+
+ rsaz_512_sqr(temp, temp, m, k0, 4);
+ rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue & 0x0f);
+ }
+
+ /* from Montgomery */
+ rsaz_512_mul_by_one(result, temp, m, k0);
+
+ OPENSSL_cleanse(storage, sizeof(storage));
+}
+
+#endif
projects / cassiopeia.git / blobdiff