mirror of
https://github.com/henrydcase/pqc.git
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399 lines
19 KiB
C
399 lines
19 KiB
C
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/*
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This file is for transpose of the Gao-Mateer FFT
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Functions with names ending with _tr are (roughly) the transpose of the corresponding functions in fft.c
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*/
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#include "fft_tr.h"
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#include "transpose.h"
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#include <stdint.h>
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static void radix_conversions_tr(vec256 *in) {
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int i, j, k;
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vec256 t;
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uint64_t v[4];
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const vec256 mask[6][2] = {
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{
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x2222222222222222, 0x2222222222222222, 0x2222222222222222, 0x2222222222222222),
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x4444444444444444, 0x4444444444444444, 0x4444444444444444, 0x4444444444444444)
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},
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{
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x0C0C0C0C0C0C0C0C, 0x0C0C0C0C0C0C0C0C, 0x0C0C0C0C0C0C0C0C, 0x0C0C0C0C0C0C0C0C),
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x3030303030303030, 0x3030303030303030, 0x3030303030303030, 0x3030303030303030)
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},
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{
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x00F000F000F000F0, 0x00F000F000F000F0, 0x00F000F000F000F0, 0x00F000F000F000F0),
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x0F000F000F000F00, 0x0F000F000F000F00, 0x0F000F000F000F00, 0x0F000F000F000F00)
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},
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{
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x0000FF000000FF00, 0x0000FF000000FF00, 0x0000FF000000FF00, 0x0000FF000000FF00),
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x00FF000000FF0000, 0x00FF000000FF0000, 0x00FF000000FF0000, 0x00FF000000FF0000)
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},
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{
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x00000000FFFF0000, 0x00000000FFFF0000, 0x00000000FFFF0000, 0x00000000FFFF0000),
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x0000FFFF00000000, 0x0000FFFF00000000, 0x0000FFFF00000000, 0x0000FFFF00000000)
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},
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{
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0xFFFFFFFF00000000, 0xFFFFFFFF00000000, 0xFFFFFFFF00000000, 0xFFFFFFFF00000000),
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PQCLEAN_MCELIECE460896_AVX_vec256_set4x(0x00000000FFFFFFFF, 0x00000000FFFFFFFF, 0x00000000FFFFFFFF, 0x00000000FFFFFFFF)
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}
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};
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const vec256 s[6][GFBITS] = {
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#include "scalars_4x.inc"
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};
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//
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for (j = 6; j >= 0; j--) {
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if (j < 6) {
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PQCLEAN_MCELIECE460896_AVX_vec256_mul(in, in, s[j]); // scaling
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}
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for (k = j; k <= 4; k++) {
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for (i = 0; i < GFBITS; i++) {
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t = PQCLEAN_MCELIECE460896_AVX_vec256_and(in[i], mask[k][0]);
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t = PQCLEAN_MCELIECE460896_AVX_vec256_sll_4x(t, 1 << k);
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in[i] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(in[i], t);
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t = PQCLEAN_MCELIECE460896_AVX_vec256_and(in[i], mask[k][1]);
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t = PQCLEAN_MCELIECE460896_AVX_vec256_sll_4x(t, 1 << k);
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in[i] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(in[i], t);
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}
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}
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if (j <= 5) {
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for (i = 0; i < GFBITS; i++) {
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v[0] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(in[i], 0);
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v[1] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(in[i], 1);
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v[2] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(in[i], 2);
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v[3] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(in[i], 3);
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v[1] ^= v[0] >> 32;
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v[1] ^= v[1] << 32;
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v[3] ^= v[2] >> 32;
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v[3] ^= v[3] << 32;
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in[i] = PQCLEAN_MCELIECE460896_AVX_vec256_set4x(v[0], v[1], v[2], v[3]);
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}
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}
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for (i = 0; i < GFBITS; i++) {
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v[0] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(in[i], 0);
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v[1] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(in[i], 1);
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v[2] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(in[i], 2);
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v[3] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(in[i], 3);
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v[2] ^= v[1];
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v[3] ^= v[2];
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in[i] = PQCLEAN_MCELIECE460896_AVX_vec256_set4x(v[0], v[1], v[2], v[3]);
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}
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}
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}
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static void butterflies_tr(vec256 *out, vec256 in[][ GFBITS ]) {
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int i, j, k, s, b;
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vec256 t0[ GFBITS ];
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vec256 t1[ GFBITS ];
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vec256 t;
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vec128 out128[ GFBITS ][ 2 ];
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vec128 tmp[ GFBITS ];
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union {
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vec128 v[6][ GFBITS + 1 ];
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vec256 V[6][ (GFBITS + 1) / 2 ];
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} pre;
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union {
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vec128 v[64][ 2 ];
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vec256 V[64];
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} buf;
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const vec256 consts[ 33 ][ GFBITS ] = {
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#include "consts.inc"
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};
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uint64_t v[4];
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uint64_t consts_ptr = 33;
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const unsigned char reversal[] = {
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0, 32, 16, 48, 8, 40, 24, 56,
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4, 36, 20, 52, 12, 44, 28, 60,
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2, 34, 18, 50, 10, 42, 26, 58,
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6, 38, 22, 54, 14, 46, 30, 62,
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1, 33, 17, 49, 9, 41, 25, 57,
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5, 37, 21, 53, 13, 45, 29, 61,
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3, 35, 19, 51, 11, 43, 27, 59,
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7, 39, 23, 55, 15, 47, 31, 63
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};
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const uint16_t beta[6] = {5246, 5306, 6039, 6685, 4905, 6755};
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// butterflies
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for (i = 4; i >= 0; i--) {
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s = 1 << i;
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consts_ptr -= s;
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for (j = 0; j < 32; j += 2 * s) {
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for (k = j; k < j + s; k++) {
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PQCLEAN_MCELIECE460896_AVX_vec256_ama_asm(in[k], in[k + s], consts[ consts_ptr + (k - j) ]);
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}
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}
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}
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for (k = 0; k < 32; k += 2) {
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for (b = 0; b < GFBITS; b++) {
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t0[b] = PQCLEAN_MCELIECE460896_AVX_vec256_unpack_low(in[k][b], in[k + 1][b]);
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}
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for (b = 0; b < GFBITS; b++) {
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t1[b] = PQCLEAN_MCELIECE460896_AVX_vec256_unpack_high(in[k][b], in[k + 1][b]);
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}
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PQCLEAN_MCELIECE460896_AVX_vec256_ama_asm(t0, t1, consts[1]);
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for (b = 0; b < GFBITS; b++) {
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in[k][b] = PQCLEAN_MCELIECE460896_AVX_vec256_unpack_low(t0[b], t1[b]);
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}
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for (b = 0; b < GFBITS; b++) {
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in[k + 1][b] = PQCLEAN_MCELIECE460896_AVX_vec256_unpack_high(t0[b], t1[b]);
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}
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for (b = 0; b < GFBITS; b++) {
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t0[b] = PQCLEAN_MCELIECE460896_AVX_vec256_unpack_low_2x(in[k][b], in[k + 1][b]);
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}
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for (b = 0; b < GFBITS; b++) {
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t1[b] = PQCLEAN_MCELIECE460896_AVX_vec256_unpack_high_2x(in[k][b], in[k + 1][b]);
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}
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PQCLEAN_MCELIECE460896_AVX_vec256_ama_asm(t0, t1, consts[0]);
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for (b = 0; b < GFBITS; b++) {
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in[k + 0][b] = PQCLEAN_MCELIECE460896_AVX_vec256_unpack_low_2x(t0[b], t1[b]);
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}
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for (b = 0; b < GFBITS; b++) {
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in[k + 1][b] = PQCLEAN_MCELIECE460896_AVX_vec256_unpack_high_2x(t0[b], t1[b]);
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}
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}
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// boradcast
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for (i = 0; i < GFBITS; i += 2) {
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// transpose
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for (k = 0; k < 32; k++) {
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if (i != GFBITS - 1) {
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buf.v[ reversal[2 * k + 0] ][1] = PQCLEAN_MCELIECE460896_AVX_vec256_extract2x(in[ k ][i + 1], 0);
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buf.v[ reversal[2 * k + 1] ][1] = PQCLEAN_MCELIECE460896_AVX_vec256_extract2x(in[ k ][i + 1], 1);
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}
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buf.v[ reversal[2 * k + 0] ][0] = PQCLEAN_MCELIECE460896_AVX_vec256_extract2x(in[ k ][i + 0], 0);
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buf.v[ reversal[2 * k + 1] ][0] = PQCLEAN_MCELIECE460896_AVX_vec256_extract2x(in[ k ][i + 0], 1);
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}
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PQCLEAN_MCELIECE460896_AVX_transpose_64x256_sp(buf.V);
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//
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pre.V[0][i / 2] = buf.V[32];
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buf.V[33] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[33], buf.V[32]);
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pre.V[1][i / 2] = buf.V[33];
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buf.V[35] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[35], buf.V[33]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[35]);
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buf.V[34] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[34], buf.V[35]);
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pre.V[2][i / 2] = buf.V[34];
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buf.V[38] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[38], buf.V[34]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[38]);
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buf.V[39] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[39], buf.V[38]);
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pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[39]);
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buf.V[37] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[37], buf.V[39]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[37]);
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buf.V[36] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[36], buf.V[37]);
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pre.V[3][i / 2] = buf.V[36];
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buf.V[44] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[44], buf.V[36]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[44]);
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buf.V[45] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[45], buf.V[44]);
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pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[45]);
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buf.V[47] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[47], buf.V[45]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[47]);
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buf.V[46] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[46], buf.V[47]);
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pre.V[2][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[2][i / 2], buf.V[46]);
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buf.V[42] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[42], buf.V[46]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[42]);
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buf.V[43] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[43], buf.V[42]);
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pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[43]);
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buf.V[41] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[41], buf.V[43]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[41]);
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buf.V[40] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[40], buf.V[41]);
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pre.V[4][i / 2] = buf.V[40];
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buf.V[56] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[56], buf.V[40]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[56]);
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buf.V[57] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[57], buf.V[56]);
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pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[57]);
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buf.V[59] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[59], buf.V[57]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[59]);
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buf.V[58] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[58], buf.V[59]);
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pre.V[2][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[2][i / 2], buf.V[58]);
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buf.V[62] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[62], buf.V[58]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[62]);
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buf.V[63] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[63], buf.V[62]);
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pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[63]);
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buf.V[61] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[61], buf.V[63]);
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pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[61]);
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buf.V[60] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[60], buf.V[61]);
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pre.V[3][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[3][i / 2], buf.V[60]);
|
||
|
|
buf.V[52] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[52], buf.V[60]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[52]);
|
||
|
|
buf.V[53] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[53], buf.V[52]);
|
||
|
|
pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[53]);
|
||
|
|
buf.V[55] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[55], buf.V[53]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[55]);
|
||
|
|
buf.V[54] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[54], buf.V[55]);
|
||
|
|
pre.V[2][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[2][i / 2], buf.V[54]);
|
||
|
|
buf.V[50] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[50], buf.V[54]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[50]);
|
||
|
|
buf.V[51] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[51], buf.V[50]);
|
||
|
|
pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[51]);
|
||
|
|
buf.V[49] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[49], buf.V[51]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[49]);
|
||
|
|
buf.V[48] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[48], buf.V[49]);
|
||
|
|
pre.V[5][i / 2] = buf.V[48];
|
||
|
|
buf.V[16] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[16], buf.V[48]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[16]);
|
||
|
|
buf.V[17] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[17], buf.V[16]);
|
||
|
|
pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[17]);
|
||
|
|
buf.V[19] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[19], buf.V[17]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[19]);
|
||
|
|
buf.V[18] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[18], buf.V[19]);
|
||
|
|
pre.V[2][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[2][i / 2], buf.V[18]);
|
||
|
|
buf.V[22] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[22], buf.V[18]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[22]);
|
||
|
|
buf.V[23] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[23], buf.V[22]);
|
||
|
|
pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[23]);
|
||
|
|
buf.V[21] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[21], buf.V[23]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[21]);
|
||
|
|
buf.V[20] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[20], buf.V[21]);
|
||
|
|
pre.V[3][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[3][i / 2], buf.V[20]);
|
||
|
|
buf.V[28] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[28], buf.V[20]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[28]);
|
||
|
|
buf.V[29] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[29], buf.V[28]);
|
||
|
|
pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[29]);
|
||
|
|
buf.V[31] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[31], buf.V[29]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[31]);
|
||
|
|
buf.V[30] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[30], buf.V[31]);
|
||
|
|
pre.V[2][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[2][i / 2], buf.V[30]);
|
||
|
|
buf.V[26] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[26], buf.V[30]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[26]);
|
||
|
|
buf.V[27] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[27], buf.V[26]);
|
||
|
|
pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[27]);
|
||
|
|
buf.V[25] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[25], buf.V[27]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[25]);
|
||
|
|
buf.V[24] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[24], buf.V[25]);
|
||
|
|
pre.V[4][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[4][i / 2], buf.V[24]);
|
||
|
|
buf.V[8] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[8], buf.V[24]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[8]);
|
||
|
|
buf.V[9] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[9], buf.V[8]);
|
||
|
|
pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[9]);
|
||
|
|
buf.V[11] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[11], buf.V[9]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[11]);
|
||
|
|
buf.V[10] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[10], buf.V[11]);
|
||
|
|
pre.V[2][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[2][i / 2], buf.V[10]);
|
||
|
|
buf.V[14] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[14], buf.V[10]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[14]);
|
||
|
|
buf.V[15] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[15], buf.V[14]);
|
||
|
|
pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[15]);
|
||
|
|
buf.V[13] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[13], buf.V[15]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[13]);
|
||
|
|
buf.V[12] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[12], buf.V[13]);
|
||
|
|
pre.V[3][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[3][i / 2], buf.V[12]);
|
||
|
|
buf.V[4] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[4], buf.V[12]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[4]);
|
||
|
|
buf.V[5] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[5], buf.V[4]);
|
||
|
|
pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[5]);
|
||
|
|
buf.V[7] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[7], buf.V[5]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[7]);
|
||
|
|
buf.V[6] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[6], buf.V[7]);
|
||
|
|
pre.V[2][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[2][i / 2], buf.V[6]);
|
||
|
|
buf.V[2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[2], buf.V[6]);
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[2]);
|
||
|
|
buf.V[3] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[3], buf.V[2]);
|
||
|
|
pre.V[1][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[1][i / 2], buf.V[3]);
|
||
|
|
buf.V[1] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[1], buf.V[3]);
|
||
|
|
|
||
|
|
pre.V[0][i / 2] = PQCLEAN_MCELIECE460896_AVX_vec256_xor(pre.V[0][i / 2], buf.V[1]);
|
||
|
|
t = PQCLEAN_MCELIECE460896_AVX_vec256_xor(buf.V[0], buf.V[1]);
|
||
|
|
|
||
|
|
if (i != GFBITS - 1) {
|
||
|
|
out128[i + 1][0] = PQCLEAN_MCELIECE460896_AVX_vec256_extract2x(t, 1);
|
||
|
|
}
|
||
|
|
out128[i + 0][0] = PQCLEAN_MCELIECE460896_AVX_vec256_extract2x(t, 0);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
|
||
|
|
for (j = 0; j < GFBITS; j++) {
|
||
|
|
tmp[j] = PQCLEAN_MCELIECE460896_AVX_vec128_setbits((beta[0] >> j) & 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
PQCLEAN_MCELIECE460896_AVX_vec128_mul(tmp, pre.v[0], tmp);
|
||
|
|
|
||
|
|
for (b = 0; b < GFBITS; b++) {
|
||
|
|
out128[b][1] = tmp[b];
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 1; i < 6; i++) {
|
||
|
|
for (j = 0; j < GFBITS; j++) {
|
||
|
|
tmp[j] = PQCLEAN_MCELIECE460896_AVX_vec128_setbits((beta[i] >> j) & 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
PQCLEAN_MCELIECE460896_AVX_vec128_mul(tmp, pre.v[i], tmp);
|
||
|
|
|
||
|
|
for (b = 0; b < GFBITS; b++) {
|
||
|
|
out128[b][1] = PQCLEAN_MCELIECE460896_AVX_vec128_xor(out128[b][1], tmp[b]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for (b = 0; b < GFBITS; b++) {
|
||
|
|
v[0] = PQCLEAN_MCELIECE460896_AVX_vec128_extract(out128[b][0], 0);
|
||
|
|
v[1] = PQCLEAN_MCELIECE460896_AVX_vec128_extract(out128[b][0], 1);
|
||
|
|
v[2] = PQCLEAN_MCELIECE460896_AVX_vec128_extract(out128[b][1], 0);
|
||
|
|
v[3] = PQCLEAN_MCELIECE460896_AVX_vec128_extract(out128[b][1], 1);
|
||
|
|
|
||
|
|
out[b] = PQCLEAN_MCELIECE460896_AVX_vec256_set4x(v[0], v[1], v[2], v[3]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* justifying the length of the output */
|
||
|
|
static void postprocess(vec256 *out) {
|
||
|
|
int i;
|
||
|
|
uint64_t v[4];
|
||
|
|
|
||
|
|
for (i = 0; i < 13; i++) {
|
||
|
|
v[0] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(out[i], 0);
|
||
|
|
v[1] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(out[i], 1);
|
||
|
|
v[2] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(out[i], 2);
|
||
|
|
v[3] = PQCLEAN_MCELIECE460896_AVX_vec256_extract(out[i], 3);
|
||
|
|
|
||
|
|
v[3] = 0;
|
||
|
|
|
||
|
|
out[i] = PQCLEAN_MCELIECE460896_AVX_vec256_set4x(v[0], v[1], v[2], v[3]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void PQCLEAN_MCELIECE460896_AVX_fft_tr(vec256 *out, vec256 in[][ GFBITS ]) {
|
||
|
|
butterflies_tr(out, in);
|
||
|
|
radix_conversions_tr(out);
|
||
|
|
|
||
|
|
postprocess(out);
|
||
|
|
}
|
||
|
|
|