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annotate libtommath/bncore.c @ 1663:c795520269f9

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Fallback for key gen without hard link support (#89) Add a non-atomic fallback for key generation on platforms where link() is not permitted (such as most stock Android installs) or on filesystems without hard link support (such as FAT).
author Matt Robinson <git@nerdoftheherd.com>
date Sat, 14 Mar 2020 14:37:35 +0000
parents f52919ffd3b1
children
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f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
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1 #include "tommath_private.h"
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2 #ifdef BNCORE_C
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3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
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4 *
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5 * LibTomMath is a library that provides multiple-precision
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6 * integer arithmetic as well as number theoretic functionality.
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7 *
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8 * The library was designed directly after the MPI library by
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9 * Michael Fromberger but has been written from scratch with
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10 * additional optimizations in place.
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11 *
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12 * SPDX-License-Identifier: Unlicense
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13 */
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15 /* Known optimal configurations
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17 CPU /Compiler /MUL CUTOFF/SQR CUTOFF
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18 -------------------------------------------------------------
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19 Intel P4 Northwood /GCC v3.4.1 / 88/ 128/LTM 0.32 ;-)
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20 AMD Athlon64 /GCC v3.4.4 / 80/ 120/LTM 0.35
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22 */
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24 int KARATSUBA_MUL_CUTOFF = 80, /* Min. number of digits before Karatsuba multiplication is used. */
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25 KARATSUBA_SQR_CUTOFF = 120, /* Min. number of digits before Karatsuba squaring is used. */
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27 TOOM_MUL_CUTOFF = 350, /* no optimal values of these are known yet so set em high */
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28 TOOM_SQR_CUTOFF = 400;
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29 #endif
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31 /* ref: HEAD -> master, tag: v1.1.0 */
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32 /* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
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33 /* commit time: 2019-01-28 20:32:32 +0100 */