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112 lines
6.8 KiB
Rust
112 lines
6.8 KiB
Rust
// -*- mode: rust; -*-
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//
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// This file is part of curve25519-dalek.
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// Copyright (c) 2016-2017 Isis Lovecruft, Henry de Valence
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// See LICENSE for licensing information.
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//
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// Authors:
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// - Isis Agora Lovecruft <isis@patternsinthevoid.net>
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// - Henry de Valence <hdevalence@hdevalence.ca>
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//! This module contains constants used by the AVX2 backend.
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use stdsimd::simd::u32x8;
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use backend::avx2::field::FieldElement32x4;
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use backend::avx2::edwards::EdwardsPoint;
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/// The low limbs of (2p, 2p, 2p, 2p), so that
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/// ```no_run
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/// (2p, 2p, 2p, 2p) = [P_TIMES_2_LO, P_TIMES_2_HI, P_TIMES_2_HI, P_TIMES_2_HI, P_TIMES_2_HI]
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/// ```
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pub(crate) static P_TIMES_2_LO: u32x8 =
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u32x8::new(67108845 << 1, 67108845 << 1, 33554431 << 1, 33554431 << 1, 67108845 << 1, 67108845 << 1, 33554431 << 1, 33554431 << 1);
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/// The high limbs of (2p, 2p, 2p, 2p), so that
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/// ```no_run
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/// (2p, 2p, 2p, 2p) = [P_TIMES_2_LO, P_TIMES_2_HI, P_TIMES_2_HI, P_TIMES_2_HI, P_TIMES_2_HI]
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/// ```
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pub(crate) static P_TIMES_2_HI: u32x8 =
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u32x8::new(67108863 << 1, 67108863 << 1, 33554431 << 1, 33554431 << 1, 67108863 << 1, 67108863 << 1, 33554431 << 1, 33554431 << 1);
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/// The low limbs of (16p, 16p, 16p, 16p), so that
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/// ```no_run
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/// (16p, 16p, 16p, 16p) = [P_TIMES_16_LO, P_TIMES_16_HI, P_TIMES_16_HI, P_TIMES_16_HI, P_TIMES_16_HI]
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/// ```
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pub(crate) static P_TIMES_16_LO: u32x8 =
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u32x8::new(67108845 << 4, 67108845 << 4, 33554431 << 4, 33554431 << 4, 67108845 << 4, 67108845 << 4, 33554431 << 4, 33554431 << 4);
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/// The high limbs of (16p, 16p, 16p, 16p), so that
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/// ```no_run
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/// (16p, 16p, 16p, 16p) = [P_TIMES_16_LO, P_TIMES_16_HI, P_TIMES_16_HI, P_TIMES_16_HI, P_TIMES_16_HI]
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/// ```
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pub(crate) static P_TIMES_16_HI: u32x8 =
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u32x8::new(67108863 << 4, 67108863 << 4, 33554431 << 4, 33554431 << 4, 67108863 << 4, 67108863 << 4, 33554431 << 4, 33554431 << 4);
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pub(crate) static P_TIMES_2_MASKED: FieldElement32x4 = FieldElement32x4([
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u32x8::new( 0, 134217690, 0, 67108862, 134217690, 0, 67108862, 0),
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u32x8::new( 0, 134217726, 0, 67108862, 134217726, 0, 67108862, 0),
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u32x8::new( 0, 134217726, 0, 67108862, 134217726, 0, 67108862, 0),
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u32x8::new( 0, 134217726, 0, 67108862, 134217726, 0, 67108862, 0),
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u32x8::new( 0, 134217726, 0, 67108862, 134217726, 0, 67108862, 0)
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]);
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/// Odd multiples of the Ed25519 basepoint:
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pub static ODD_MULTIPLES_OF_BASEPOINT: [EdwardsPoint; 8] = [
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EdwardsPoint(FieldElement32x4([
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u32x8::new(52811034, 40265304, 25909283, 26843545, 1, 28827043, 0, 27438313),
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u32x8::new(16144682, 13421772, 17082669, 20132659, 0, 39759291, 0, 244362),
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u32x8::new(27570973, 26843545, 30858332, 6710886, 0, 8635006, 0, 11264893),
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u32x8::new(40966398, 53687091, 8378388, 13421772, 0, 19351346, 0, 13413597),
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u32x8::new(20764389, 40265318, 8758491, 26843545, 0, 16611511, 0, 27139452),
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])),
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EdwardsPoint(FieldElement32x4([
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u32x8::new(63703867, 19156774, 608100, 2486757, 12685460, 3173753, 21649412, 16313381),
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u32x8::new(52397038, 65858675, 26775664, 16661035, 14269998, 9080558, 1059463, 28938752),
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u32x8::new( 5461635, 28034025, 23358301, 1245198, 1367765, 20288887, 31111942, 18395221),
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u32x8::new( 1886934, 32436996, 681756, 18977693, 8129860, 40112764, 25764567, 11876840),
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u32x8::new(63042604, 52399761, 22087481, 29829870, 8565820, 33723612, 28645162, 8502864),
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])),
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EdwardsPoint(FieldElement32x4([
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u32x8::new(14879397, 3951036, 9454671, 16606238, 23529732, 44147004, 11890541, 17067526),
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u32x8::new(58509479, 57216664, 9671992, 32001147, 60966207, 11801823, 10808378, 15115613),
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u32x8::new(54854992, 39210911, 8112050, 1353604, 1337416, 35520540, 32967851, 17786030),
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u32x8::new(59007462, 40864509, 26240923, 30403852, 28456403, 21546582, 32732450, 21005910),
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u32x8::new(40711675, 22446613, 9664668, 12483629, 26142305, 56254715, 15439904, 214849),
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])),
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EdwardsPoint(FieldElement32x4([
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u32x8::new(52231579, 51632644, 173613, 7677257, 26374424, 45994428, 5303371, 1425942),
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u32x8::new(38126791, 48854506, 23252518, 30611978, 49977504, 66706952, 1076178, 27100873),
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u32x8::new(26349427, 63077566, 20258199, 3884787, 33226507, 2371423, 5787271, 18628170),
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u32x8::new(15005754, 22729577, 4978944, 2522289, 1404784, 56367795, 22517039, 29271243),
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u32x8::new(22748934, 35977548, 25561257, 31734126, 22775284, 32000077, 927866, 2278697),
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])),
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EdwardsPoint(FieldElement32x4([
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u32x8::new(66090281, 61980626, 23780289, 6519561, 62542590, 47174086, 28818882, 15661068),
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u32x8::new(17433715, 12931425, 12232056, 7885877, 44179512, 35590146, 32787344, 22631048),
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u32x8::new(43729883, 6870635, 15782399, 11810556, 2652935, 31800505, 23683367, 13638649),
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u32x8::new(64007953, 40242373, 32810277, 20180235, 20399465, 48133835, 32913956, 19094667),
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u32x8::new(56562708, 40269142, 18953105, 9027935, 35700921, 12896915, 14757156, 22773619),
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])),
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EdwardsPoint(FieldElement32x4([
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u32x8::new(65129016, 34709402, 25132940, 13788431, 3661652, 16914498, 27409409, 18941039),
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u32x8::new(42488074, 49427602, 6177212, 20812339, 41644653, 2977316, 12162542, 5293661),
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u32x8::new( 7981168, 12223605, 6239200, 20403609, 20710415, 4828170, 11627702, 4431044),
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u32x8::new(65817142, 96824, 25021652, 16364722, 50410869, 24651857, 6979034, 33176209),
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u32x8::new(33008344, 8687253, 27859668, 28796356, 30192014, 11975680, 11991047, 27710707),
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])),
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EdwardsPoint(FieldElement32x4([
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u32x8::new(14676653, 50945941, 13489249, 31456262, 47726639, 21761847, 3324839, 7843947),
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u32x8::new(53352326, 8688989, 12944061, 12994004, 50113821, 37990636, 1537898, 20483689),
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u32x8::new(46786852, 15572264, 24004728, 7566233, 32596174, 34437796, 23201722, 3431551),
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u32x8::new(49025674, 52497128, 13273618, 10266201, 66795206, 2887684, 30966565, 33449990),
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u32x8::new(53210238, 65839385, 15458877, 18409918, 24777464, 25586795, 15335748, 12323382),
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])),
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EdwardsPoint(FieldElement32x4([
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u32x8::new(57816016, 23106045, 24948505, 27413507, 32551424, 26145165, 22632568, 27527446),
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u32x8::new(53022711, 40974949, 14110533, 30646997, 51399118, 53289754, 32528560, 15822835),
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u32x8::new(23810949, 51779690, 17532625, 21326637, 60314333, 43761996, 4852905, 3474945),
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u32x8::new(13323962, 10752742, 16431634, 26425049, 24258356, 53260846, 19756601, 19546842),
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u32x8::new(17403634, 52199608, 32323720, 5313255, 48522162, 33376516, 31903659, 15291466),
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])),
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];
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