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pqc/crypto_kem/mceliece348864f/sse/fft_tr.c
Thom Wiggers ac2c20045c Classic McEliece (#259) 
* Add McEliece reference implementations

* Add Vec implementations of McEliece

* Add sse implementations

* Add AVX2 implementations

* Get rid of stuff not supported by Mac ABI

* restrict to two cores

* Ditch .data files

* Remove .hidden from all .S files

* speed up duplicate consistency tests by batching

* make cpuinfo more robust

* Hope to stabilize macos cpuinfo without ccache

* Revert "Hope to stabilize macos cpuinfo without ccache"

This reverts commit 6129c3cabe1abbc8b956bc87e902a698e32bf322.

* Just hardcode what's available at travis

* Fixed-size types in api.h

* namespace all header files in mceliece

* Ditch operations.h

* Get rid of static inline functions

* fixup! Ditch operations.h
2021-03-24 21:02:45 +00:00

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/*
This file is for transpose of the Gao-Mateer FFT
Functions with names ending with _tr are (roughly) the transpose of the corresponding functions in fft.c
*/
#include "fft_tr.h"
#include "transpose.h"
#include "vec.h"
#include "vec128.h"
#include <stdint.h>
static void radix_conversions_tr(vec128 in[ GFBITS ]) {
int i, j, k;
const vec128 mask[10] = {
PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(0x2222222222222222, 0x2222222222222222),
PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(0x4444444444444444, 0x4444444444444444),
PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(0x0C0C0C0C0C0C0C0C, 0x0C0C0C0C0C0C0C0C),
PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(0x3030303030303030, 0x3030303030303030),
PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(0x00F000F000F000F0, 0x00F000F000F000F0),
PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(0x0F000F000F000F00, 0x0F000F000F000F00),
PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(0x0000FF000000FF00, 0x0000FF000000FF00),
PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(0x00FF000000FF0000, 0x00FF000000FF0000),
PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(0x00000000FFFF0000, 0x00000000FFFF0000),
PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(0x0000FFFF00000000, 0x0000FFFF00000000)
};
const vec128 s[5][GFBITS] = {
#include "scalars_2x.inc"
};
uint64_t v0, v1;
//
for (j = 5; j >= 0; j--) {
if (j < 5) {
PQCLEAN_MCELIECE348864F_SSE_vec128_mul(in, in, s[j]);
}
for (i = 0; i < GFBITS; i++) {
for (k = j; k <= 4; k++) {
in[i] ^= PQCLEAN_MCELIECE348864F_SSE_vec128_sll_2x(in[i] & mask[2 * k + 0], 1 << k);
in[i] ^= PQCLEAN_MCELIECE348864F_SSE_vec128_sll_2x(in[i] & mask[2 * k + 1], 1 << k);
}
}
for (i = 0; i < GFBITS; i++) {
v0 = PQCLEAN_MCELIECE348864F_SSE_vec128_extract(in[i], 0);
v1 = PQCLEAN_MCELIECE348864F_SSE_vec128_extract(in[i], 1);
v1 ^= v0 >> 32;
v1 ^= v1 << 32;
in[i] = PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(v0, v1);
}
}
}
static void butterflies_tr(vec128 out[ GFBITS ], vec128 in[][ GFBITS ]) {
int i, j, k, s, b;
uint64_t t[ GFBITS ];
uint64_t pre[6][ GFBITS ];
uint64_t out64[2][GFBITS];
vec128 p2[ 6 ];
vec128 buf[64];
vec128 tt[ GFBITS ];
vec128 x[ GFBITS ], y[ GFBITS ];
const vec128 consts[ 32 ][ GFBITS ] = {
#include "consts.inc"
};
uint64_t consts_ptr = 32;
const uint8_t reversal[64] = {
0, 32, 16, 48, 8, 40, 24, 56,
4, 36, 20, 52, 12, 44, 28, 60,
2, 34, 18, 50, 10, 42, 26, 58,
6, 38, 22, 54, 14, 46, 30, 62,
1, 33, 17, 49, 9, 41, 25, 57,
5, 37, 21, 53, 13, 45, 29, 61,
3, 35, 19, 51, 11, 43, 27, 59,
7, 39, 23, 55, 15, 47, 31, 63
};
const uint16_t beta[6] = {8, 1300, 3408, 1354, 2341, 1154};
// butterflies
for (i = 4; i >= 0; i--) {
s = 1 << i;
consts_ptr -= s;
for (j = 0; j < 32; j += 2 * s) {
for (k = j; k < j + s; k++) {
for (b = 0; b < GFBITS; b++) {
in[k][b] ^= in[k + s][b];
}
PQCLEAN_MCELIECE348864F_SSE_vec128_mul(tt, in[k], consts[ consts_ptr + (k - j) ]);
for (b = 0; b < GFBITS; b++) {
in[k + s][b] ^= tt[b];
}
}
}
}
for (i = 0; i < 32; i += 2) {
for (b = 0; b < GFBITS; b++) {
x[b] = PQCLEAN_MCELIECE348864F_SSE_vec128_unpack_low(in[i + 0][b], in[i + 1][b]);
}
for (b = 0; b < GFBITS; b++) {
y[b] = PQCLEAN_MCELIECE348864F_SSE_vec128_unpack_high(in[i + 0][b], in[i + 1][b]);
}
for (b = 0; b < GFBITS; b++) {
in[i + 0][b] = x[b] ^ y[b];
}
PQCLEAN_MCELIECE348864F_SSE_vec128_mul(tt, in[i + 0], consts[ 0 ]);
for (b = 0; b < GFBITS; b++) {
in[i + 1][b] = y[b] ^ tt[b];
}
}
// transpose
for (i = 0; i < GFBITS; i += 2) {
for (j = 0; j < 64; j += 4) {
buf[ reversal[j + 0] ] = PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(PQCLEAN_MCELIECE348864F_SSE_vec128_extract(in[j / 2 + 0][i + 0], 0),
PQCLEAN_MCELIECE348864F_SSE_vec128_extract(in[j / 2 + 0][i + 1], 0));
buf[ reversal[j + 1] ] = PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(PQCLEAN_MCELIECE348864F_SSE_vec128_extract(in[j / 2 + 1][i + 0], 0),
PQCLEAN_MCELIECE348864F_SSE_vec128_extract(in[j / 2 + 1][i + 1], 0));
buf[ reversal[j + 2] ] = PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(PQCLEAN_MCELIECE348864F_SSE_vec128_extract(in[j / 2 + 0][i + 0], 1),
PQCLEAN_MCELIECE348864F_SSE_vec128_extract(in[j / 2 + 0][i + 1], 1));
buf[ reversal[j + 3] ] = PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(PQCLEAN_MCELIECE348864F_SSE_vec128_extract(in[j / 2 + 1][i + 0], 1),
PQCLEAN_MCELIECE348864F_SSE_vec128_extract(in[j / 2 + 1][i + 1], 1));
}
PQCLEAN_MCELIECE348864F_SSE_transpose_64x128_sp(buf);
p2[0] = buf[32];
buf[33] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[33], buf[32]);
p2[1] = buf[33];
buf[35] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[35], buf[33]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[35]);
buf[34] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[34], buf[35]);
p2[2] = buf[34];
buf[38] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[38], buf[34]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[38]);
buf[39] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[39], buf[38]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[39]);
buf[37] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[37], buf[39]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[37]);
buf[36] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[36], buf[37]);
p2[3] = buf[36];
buf[44] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[44], buf[36]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[44]);
buf[45] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[45], buf[44]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[45]);
buf[47] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[47], buf[45]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[47]);
buf[46] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[46], buf[47]);
p2[2] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[2], buf[46]);
buf[42] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[42], buf[46]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[42]);
buf[43] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[43], buf[42]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[43]);
buf[41] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[41], buf[43]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[41]);
buf[40] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[40], buf[41]);
p2[4] = buf[40];
buf[56] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[56], buf[40]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[56]);
buf[57] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[57], buf[56]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[57]);
buf[59] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[59], buf[57]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[59]);
buf[58] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[58], buf[59]);
p2[2] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[2], buf[58]);
buf[62] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[62], buf[58]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[62]);
buf[63] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[63], buf[62]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[63]);
buf[61] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[61], buf[63]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[61]);
buf[60] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[60], buf[61]);
p2[3] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[3], buf[60]);
buf[52] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[52], buf[60]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[52]);
buf[53] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[53], buf[52]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[53]);
buf[55] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[55], buf[53]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[55]);
buf[54] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[54], buf[55]);
p2[2] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[2], buf[54]);
buf[50] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[50], buf[54]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[50]);
buf[51] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[51], buf[50]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[51]);
buf[49] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[49], buf[51]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[49]);
buf[48] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[48], buf[49]);
p2[5] = buf[48];
buf[16] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[16], buf[48]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[16]);
buf[17] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[17], buf[16]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[17]);
buf[19] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[19], buf[17]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[19]);
buf[18] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[18], buf[19]);
p2[2] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[2], buf[18]);
buf[22] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[22], buf[18]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[22]);
buf[23] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[23], buf[22]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[23]);
buf[21] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[21], buf[23]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[21]);
buf[20] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[20], buf[21]);
p2[3] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[3], buf[20]);
buf[28] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[28], buf[20]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[28]);
buf[29] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[29], buf[28]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[29]);
buf[31] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[31], buf[29]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[31]);
buf[30] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[30], buf[31]);
p2[2] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[2], buf[30]);
buf[26] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[26], buf[30]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[26]);
buf[27] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[27], buf[26]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[27]);
buf[25] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[25], buf[27]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[25]);
buf[24] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[24], buf[25]);
p2[4] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[4], buf[24]);
buf[8] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[8], buf[24]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[8]);
buf[9] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[9], buf[8]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[9]);
buf[11] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[11], buf[9]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[11]);
buf[10] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[10], buf[11]);
p2[2] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[2], buf[10]);
buf[14] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[14], buf[10]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[14]);
buf[15] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[15], buf[14]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[15]);
buf[13] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[13], buf[15]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[13]);
buf[12] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[12], buf[13]);
p2[3] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[3], buf[12]);
buf[4] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[4], buf[12]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[4]);
buf[5] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[5], buf[4]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[5]);
buf[7] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[7], buf[5]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[7]);
buf[6] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[6], buf[7]);
p2[2] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[2], buf[6]);
buf[2] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[2], buf[6]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[2]);
buf[3] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[3], buf[2]);
p2[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[1], buf[3]);
buf[1] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[1], buf[3]);
p2[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(p2[0], buf[1]);
buf[0] = PQCLEAN_MCELIECE348864F_SSE_vec128_xor(buf[0], buf[1]);
for (j = 0; j < 6; j++) {
pre[j][i + 0] = PQCLEAN_MCELIECE348864F_SSE_vec128_extract(p2[j], 0);
pre[j][i + 1] = PQCLEAN_MCELIECE348864F_SSE_vec128_extract(p2[j], 1);
}
out64[0][i + 0] = PQCLEAN_MCELIECE348864F_SSE_vec128_extract(buf[0], 0);
out64[0][i + 1] = PQCLEAN_MCELIECE348864F_SSE_vec128_extract(buf[0], 1);
}
//
for (j = 0; j < GFBITS; j++) {
t[j] = (beta[0] >> j) & 1;
t[j] = -t[j];
}
PQCLEAN_MCELIECE348864F_SSE_vec_mul(out64[1], pre[0], t);
for (i = 1; i < 6; i++) {
for (j = 0; j < GFBITS; j++) {
t[j] = (beta[i] >> j) & 1;
t[j] = -t[j];
}
PQCLEAN_MCELIECE348864F_SSE_vec_mul(t, pre[i], t);
PQCLEAN_MCELIECE348864F_SSE_vec_add(out64[1], out64[1], t);
}
for (b = 0; b < GFBITS; b++) {
out[b] = PQCLEAN_MCELIECE348864F_SSE_vec128_set2x(out64[0][b], out64[1][b]);
}
}
void PQCLEAN_MCELIECE348864F_SSE_fft_tr(vec128 out[GFBITS], vec128 in[][ GFBITS ]) {
butterflies_tr(out, in);
radix_conversions_tr(out);
}
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