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https://github.com/henrydcase/pqc.git
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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
138 lines
3.9 KiB
C
138 lines
3.9 KiB
C
/*
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This file is for functions related to 256-bit vectors
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including functions for bitsliced field operations
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*/
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#include "vec256.h"
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extern void PQCLEAN_MCELIECE348864_AVX_vec256_mul_asm(vec256 *, vec256 *, const vec256 *);
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_set1_16b(uint16_t a) {
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return _mm256_set1_epi16(a);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_setzero(void) {
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return _mm256_setzero_si256();
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_set4x(uint64_t a0, uint64_t a1, uint64_t a2, uint64_t a3) {
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return _mm256_set_epi64x(a3, a2, a1, a0);
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}
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int PQCLEAN_MCELIECE348864_AVX_vec256_testz(vec256 a) {
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return _mm256_testz_si256(a, a);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_and(vec256 a, vec256 b) {
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return _mm256_and_si256(a, b);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_xor(vec256 a, vec256 b) {
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return _mm256_xor_si256(a, b);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_or(vec256 a, vec256 b) {
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return _mm256_or_si256(a, b);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_sll_4x(vec256 a, int s) {
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return _mm256_slli_epi64(a, s);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_srl_4x(vec256 a, int s) {
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return _mm256_srli_epi64(a, s);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_unpack_low(vec256 a, vec256 b) {
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return _mm256_permute2x128_si256 (a, b, 0x20);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_unpack_high(vec256 a, vec256 b) {
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return _mm256_permute2x128_si256 (a, b, 0x31);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_unpack_low_2x(vec256 a, vec256 b) {
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return _mm256_unpacklo_epi64 (a, b);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_unpack_high_2x(vec256 a, vec256 b) {
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return _mm256_unpackhi_epi64 (a, b);
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}
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vec256 PQCLEAN_MCELIECE348864_AVX_vec256_or_reduce(const vec256 *a) {
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int i;
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vec256 ret;
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ret = a[0];
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for (i = 1; i < GFBITS; i++) {
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ret = PQCLEAN_MCELIECE348864_AVX_vec256_or(ret, a[i]);
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}
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return ret;
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}
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void PQCLEAN_MCELIECE348864_AVX_vec256_copy(vec256 *dest, const vec256 *src) {
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int i;
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for (i = 0; i < GFBITS; i++) {
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dest[i] = src[i];
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}
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}
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void PQCLEAN_MCELIECE348864_AVX_vec256_mul(vec256 *h, vec256 *f, const vec256 *g) {
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PQCLEAN_MCELIECE348864_AVX_vec256_mul_asm(h, f, g);
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}
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/* bitsliced field squarings */
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void PQCLEAN_MCELIECE348864_AVX_vec256_sq(vec256 *out, const vec256 *in) {
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int i;
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vec256 result[GFBITS];
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result[0] = in[0] ^ in[6];
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result[1] = in[11];
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result[2] = in[1] ^ in[7];
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result[3] = in[6];
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result[4] = in[2] ^ in[11] ^ in[8];
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result[5] = in[7];
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result[6] = in[3] ^ in[9];
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result[7] = in[8];
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result[8] = in[4] ^ in[10];
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result[9] = in[9];
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result[10] = in[5] ^ in[11];
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result[11] = in[10];
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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_MCELIECE348864_AVX_vec256_inv(vec256 *out, const vec256 *in) {
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vec256 tmp_11[ GFBITS ];
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vec256 tmp_1111[ GFBITS ];
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PQCLEAN_MCELIECE348864_AVX_vec256_copy(out, in);
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, out);
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PQCLEAN_MCELIECE348864_AVX_vec256_mul(tmp_11, out, in); // ^11
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, tmp_11);
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, out);
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PQCLEAN_MCELIECE348864_AVX_vec256_mul(tmp_1111, out, tmp_11); // ^1111
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, tmp_1111);
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, out);
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, out);
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, out);
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PQCLEAN_MCELIECE348864_AVX_vec256_mul(out, out, tmp_1111); // ^11111111
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, out);
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, out);
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PQCLEAN_MCELIECE348864_AVX_vec256_mul(out, out, tmp_11); // ^1111111111
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, out);
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PQCLEAN_MCELIECE348864_AVX_vec256_mul(out, out, in); // ^11111111111
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PQCLEAN_MCELIECE348864_AVX_vec256_sq(out, out); // ^111111111110
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}
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