ac2c20045c
* 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
140 lines
3.3 KiB
C
140 lines
3.3 KiB
C
#include "vec.h"
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#include "params.h"
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vec PQCLEAN_MCELIECE460896_VEC_vec_setbits(vec b) {
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vec ret = -b;
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return ret;
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}
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vec PQCLEAN_MCELIECE460896_VEC_vec_set1_16b(uint16_t v) {
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vec ret;
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ret = v;
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ret |= ret << 16;
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ret |= ret << 32;
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return ret;
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}
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void PQCLEAN_MCELIECE460896_VEC_vec_copy(vec *out, const vec *in) {
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int i;
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for (i = 0; i < GFBITS; i++) {
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out[i] = in[i];
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}
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}
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vec PQCLEAN_MCELIECE460896_VEC_vec_or_reduce(const vec *a) {
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int i;
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vec ret;
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ret = a[0];
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for (i = 1; i < GFBITS; i++) {
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ret |= a[i];
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}
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return ret;
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}
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int PQCLEAN_MCELIECE460896_VEC_vec_testz(vec a) {
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a |= a >> 32;
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a |= a >> 16;
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a |= a >> 8;
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a |= a >> 4;
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a |= a >> 2;
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a |= a >> 1;
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return ((int)a & 1) ^ 1;
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}
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void PQCLEAN_MCELIECE460896_VEC_vec_mul(vec *h, const vec *f, const vec *g) {
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int i, j;
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vec buf[ 2 * GFBITS - 1 ];
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for (i = 0; i < 2 * GFBITS - 1; i++) {
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buf[i] = 0;
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}
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for (i = 0; i < GFBITS; i++) {
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for (j = 0; j < GFBITS; j++) {
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buf[i + j] ^= f[i] & g[j];
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}
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}
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for (i = 2 * GFBITS - 2; i >= GFBITS; i--) {
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buf[i - GFBITS + 4] ^= buf[i];
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buf[i - GFBITS + 3] ^= buf[i];
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buf[i - GFBITS + 1] ^= buf[i];
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buf[i - GFBITS + 0] ^= buf[i];
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}
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for (i = 0; i < GFBITS; i++) {
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h[i] = buf[i];
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}
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}
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/* bitsliced field squarings */
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void PQCLEAN_MCELIECE460896_VEC_vec_sq(vec *out, const vec *in) {
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int i;
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vec result[GFBITS], t;
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t = in[11] ^ in[12];
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result[0] = in[0] ^ in[11];
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result[1] = in[7] ^ t;
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result[2] = in[1] ^ in[7];
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result[3] = in[8] ^ t;
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result[4] = in[2] ^ in[7];
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result[4] = result[4] ^ in[8];
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result[4] = result[4] ^ t;
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result[5] = in[7] ^ in[9];
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result[6] = in[3] ^ in[8];
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result[6] = result[6] ^ in[9];
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result[6] = result[6] ^ in[12];
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result[7] = in[8] ^ in[10];
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result[8] = in[4] ^ in[9];
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result[8] = result[8] ^ in[10];
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result[9] = in[9] ^ in[11];
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result[10] = in[5] ^ in[10];
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result[10] = result[10] ^ in[11];
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result[11] = in[10] ^ in[12];
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result[12] = in[6] ^ t;
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for (i = 0; i < GFBITS; i++) {
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out[i] = result[i];
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}
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}
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/* bitsliced field inverses */
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void PQCLEAN_MCELIECE460896_VEC_vec_inv(vec *out, const vec *in) {
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vec tmp_11[ GFBITS ];
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vec tmp_1111[ GFBITS ];
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PQCLEAN_MCELIECE460896_VEC_vec_copy(out, in);
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, out);
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PQCLEAN_MCELIECE460896_VEC_vec_mul(tmp_11, out, in); // ^11
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, tmp_11);
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, out);
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PQCLEAN_MCELIECE460896_VEC_vec_mul(tmp_1111, out, tmp_11); // ^1111
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, tmp_1111);
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, out);
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, out);
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, out);
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PQCLEAN_MCELIECE460896_VEC_vec_mul(out, out, tmp_1111); // ^11111111
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, out);
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, out);
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, out);
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, out);
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PQCLEAN_MCELIECE460896_VEC_vec_mul(out, out, tmp_1111); // ^111111111111
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PQCLEAN_MCELIECE460896_VEC_vec_sq(out, out); // ^1111111111110
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}
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