git / moonbite-core / src/crypto/blake3/blake3_neon.c · raw

#include "blake3_impl.h"#include <arm_neon.h>// TODO: This is probably incorrect for big-endian ARM. How should that work?INLINE uint32x4_t loadu_128(const uint8_t src[16]) {  // vld1q_u32 has alignment requirements. Don't use it.  uint32x4_t x;  memcpy(&x, src, 16);  return x;}INLINE void storeu_128(uint32x4_t src, uint8_t dest[16]) {  // vst1q_u32 has alignment requirements. Don't use it.  memcpy(dest, &src, 16);}INLINE uint32x4_t add_128(uint32x4_t a, uint32x4_t b) {  return vaddq_u32(a, b);}INLINE uint32x4_t xor_128(uint32x4_t a, uint32x4_t b) {  return veorq_u32(a, b);}INLINE uint32x4_t set1_128(uint32_t x) { return vld1q_dup_u32(&x); }INLINE uint32x4_t set4(uint32_t a, uint32_t b, uint32_t c, uint32_t d) {  uint32_t array[4] = {a, b, c, d};  return vld1q_u32(array);}INLINE uint32x4_t rot16_128(uint32x4_t x) {  return vorrq_u32(vshrq_n_u32(x, 16), vshlq_n_u32(x, 32 - 16));}INLINE uint32x4_t rot12_128(uint32x4_t x) {  return vorrq_u32(vshrq_n_u32(x, 12), vshlq_n_u32(x, 32 - 12));}INLINE uint32x4_t rot8_128(uint32x4_t x) {  return vorrq_u32(vshrq_n_u32(x, 8), vshlq_n_u32(x, 32 - 8));}INLINE uint32x4_t rot7_128(uint32x4_t x) {  return vorrq_u32(vshrq_n_u32(x, 7), vshlq_n_u32(x, 32 - 7));}// TODO: compress_neon// TODO: hash2_neon/* * ---------------------------------------------------------------------------- * hash4_neon * ---------------------------------------------------------------------------- */INLINE void round_fn4(uint32x4_t v[16], uint32x4_t m[16], size_t r) {  v[0] = add_128(v[0], m[(size_t)MSG_SCHEDULE[r][0]]);  v[1] = add_128(v[1], m[(size_t)MSG_SCHEDULE[r][2]]);  v[2] = add_128(v[2], m[(size_t)MSG_SCHEDULE[r][4]]);  v[3] = add_128(v[3], m[(size_t)MSG_SCHEDULE[r][6]]);  v[0] = add_128(v[0], v[4]);  v[1] = add_128(v[1], v[5]);  v[2] = add_128(v[2], v[6]);  v[3] = add_128(v[3], v[7]);  v[12] = xor_128(v[12], v[0]);  v[13] = xor_128(v[13], v[1]);  v[14] = xor_128(v[14], v[2]);  v[15] = xor_128(v[15], v[3]);  v[12] = rot16_128(v[12]);  v[13] = rot16_128(v[13]);  v[14] = rot16_128(v[14]);  v[15] = rot16_128(v[15]);  v[8] = add_128(v[8], v[12]);  v[9] = add_128(v[9], v[13]);  v[10] = add_128(v[10], v[14]);  v[11] = add_128(v[11], v[15]);  v[4] = xor_128(v[4], v[8]);  v[5] = xor_128(v[5], v[9]);  v[6] = xor_128(v[6], v[10]);  v[7] = xor_128(v[7], v[11]);  v[4] = rot12_128(v[4]);  v[5] = rot12_128(v[5]);  v[6] = rot12_128(v[6]);  v[7] = rot12_128(v[7]);  v[0] = add_128(v[0], m[(size_t)MSG_SCHEDULE[r][1]]);  v[1] = add_128(v[1], m[(size_t)MSG_SCHEDULE[r][3]]);  v[2] = add_128(v[2], m[(size_t)MSG_SCHEDULE[r][5]]);  v[3] = add_128(v[3], m[(size_t)MSG_SCHEDULE[r][7]]);  v[0] = add_128(v[0], v[4]);  v[1] = add_128(v[1], v[5]);  v[2] = add_128(v[2], v[6]);  v[3] = add_128(v[3], v[7]);  v[12] = xor_128(v[12], v[0]);  v[13] = xor_128(v[13], v[1]);  v[14] = xor_128(v[14], v[2]);  v[15] = xor_128(v[15], v[3]);  v[12] = rot8_128(v[12]);  v[13] = rot8_128(v[13]);  v[14] = rot8_128(v[14]);  v[15] = rot8_128(v[15]);  v[8] = add_128(v[8], v[12]);  v[9] = add_128(v[9], v[13]);  v[10] = add_128(v[10], v[14]);  v[11] = add_128(v[11], v[15]);  v[4] = xor_128(v[4], v[8]);  v[5] = xor_128(v[5], v[9]);  v[6] = xor_128(v[6], v[10]);  v[7] = xor_128(v[7], v[11]);  v[4] = rot7_128(v[4]);  v[5] = rot7_128(v[5]);  v[6] = rot7_128(v[6]);  v[7] = rot7_128(v[7]);  v[0] = add_128(v[0], m[(size_t)MSG_SCHEDULE[r][8]]);  v[1] = add_128(v[1], m[(size_t)MSG_SCHEDULE[r][10]]);  v[2] = add_128(v[2], m[(size_t)MSG_SCHEDULE[r][12]]);  v[3] = add_128(v[3], m[(size_t)MSG_SCHEDULE[r][14]]);  v[0] = add_128(v[0], v[5]);  v[1] = add_128(v[1], v[6]);  v[2] = add_128(v[2], v[7]);  v[3] = add_128(v[3], v[4]);  v[15] = xor_128(v[15], v[0]);  v[12] = xor_128(v[12], v[1]);  v[13] = xor_128(v[13], v[2]);  v[14] = xor_128(v[14], v[3]);  v[15] = rot16_128(v[15]);  v[12] = rot16_128(v[12]);  v[13] = rot16_128(v[13]);  v[14] = rot16_128(v[14]);  v[10] = add_128(v[10], v[15]);  v[11] = add_128(v[11], v[12]);  v[8] = add_128(v[8], v[13]);  v[9] = add_128(v[9], v[14]);  v[5] = xor_128(v[5], v[10]);  v[6] = xor_128(v[6], v[11]);  v[7] = xor_128(v[7], v[8]);  v[4] = xor_128(v[4], v[9]);  v[5] = rot12_128(v[5]);  v[6] = rot12_128(v[6]);  v[7] = rot12_128(v[7]);  v[4] = rot12_128(v[4]);  v[0] = add_128(v[0], m[(size_t)MSG_SCHEDULE[r][9]]);  v[1] = add_128(v[1], m[(size_t)MSG_SCHEDULE[r][11]]);  v[2] = add_128(v[2], m[(size_t)MSG_SCHEDULE[r][13]]);  v[3] = add_128(v[3], m[(size_t)MSG_SCHEDULE[r][15]]);  v[0] = add_128(v[0], v[5]);  v[1] = add_128(v[1], v[6]);  v[2] = add_128(v[2], v[7]);  v[3] = add_128(v[3], v[4]);  v[15] = xor_128(v[15], v[0]);  v[12] = xor_128(v[12], v[1]);  v[13] = xor_128(v[13], v[2]);  v[14] = xor_128(v[14], v[3]);  v[15] = rot8_128(v[15]);  v[12] = rot8_128(v[12]);  v[13] = rot8_128(v[13]);  v[14] = rot8_128(v[14]);  v[10] = add_128(v[10], v[15]);  v[11] = add_128(v[11], v[12]);  v[8] = add_128(v[8], v[13]);  v[9] = add_128(v[9], v[14]);  v[5] = xor_128(v[5], v[10]);  v[6] = xor_128(v[6], v[11]);  v[7] = xor_128(v[7], v[8]);  v[4] = xor_128(v[4], v[9]);  v[5] = rot7_128(v[5]);  v[6] = rot7_128(v[6]);  v[7] = rot7_128(v[7]);  v[4] = rot7_128(v[4]);}INLINE void transpose_vecs_128(uint32x4_t vecs[4]) {  // Individually transpose the four 2x2 sub-matrices in each corner.  uint32x4x2_t rows01 = vtrnq_u32(vecs[0], vecs[1]);  uint32x4x2_t rows23 = vtrnq_u32(vecs[2], vecs[3]);  // Swap the top-right and bottom-left 2x2s (which just got transposed).  vecs[0] =      vcombine_u32(vget_low_u32(rows01.val[0]), vget_low_u32(rows23.val[0]));  vecs[1] =      vcombine_u32(vget_low_u32(rows01.val[1]), vget_low_u32(rows23.val[1]));  vecs[2] =      vcombine_u32(vget_high_u32(rows01.val[0]), vget_high_u32(rows23.val[0]));  vecs[3] =      vcombine_u32(vget_high_u32(rows01.val[1]), vget_high_u32(rows23.val[1]));}INLINE void transpose_msg_vecs4(const uint8_t *const *inputs,                                size_t block_offset, uint32x4_t out[16]) {  out[0] = loadu_128(&inputs[0][block_offset + 0 * sizeof(uint32x4_t)]);  out[1] = loadu_128(&inputs[1][block_offset + 0 * sizeof(uint32x4_t)]);  out[2] = loadu_128(&inputs[2][block_offset + 0 * sizeof(uint32x4_t)]);  out[3] = loadu_128(&inputs[3][block_offset + 0 * sizeof(uint32x4_t)]);  out[4] = loadu_128(&inputs[0][block_offset + 1 * sizeof(uint32x4_t)]);  out[5] = loadu_128(&inputs[1][block_offset + 1 * sizeof(uint32x4_t)]);  out[6] = loadu_128(&inputs[2][block_offset + 1 * sizeof(uint32x4_t)]);  out[7] = loadu_128(&inputs[3][block_offset + 1 * sizeof(uint32x4_t)]);  out[8] = loadu_128(&inputs[0][block_offset + 2 * sizeof(uint32x4_t)]);  out[9] = loadu_128(&inputs[1][block_offset + 2 * sizeof(uint32x4_t)]);  out[10] = loadu_128(&inputs[2][block_offset + 2 * sizeof(uint32x4_t)]);  out[11] = loadu_128(&inputs[3][block_offset + 2 * sizeof(uint32x4_t)]);  out[12] = loadu_128(&inputs[0][block_offset + 3 * sizeof(uint32x4_t)]);  out[13] = loadu_128(&inputs[1][block_offset + 3 * sizeof(uint32x4_t)]);  out[14] = loadu_128(&inputs[2][block_offset + 3 * sizeof(uint32x4_t)]);  out[15] = loadu_128(&inputs[3][block_offset + 3 * sizeof(uint32x4_t)]);  transpose_vecs_128(&out[0]);  transpose_vecs_128(&out[4]);  transpose_vecs_128(&out[8]);  transpose_vecs_128(&out[12]);}INLINE void load_counters4(uint64_t counter, bool increment_counter,                           uint32x4_t *out_low, uint32x4_t *out_high) {  uint64_t mask = (increment_counter ? ~0 : 0);  *out_low = set4(      counter_low(counter + (mask & 0)), counter_low(counter + (mask & 1)),      counter_low(counter + (mask & 2)), counter_low(counter + (mask & 3)));  *out_high = set4(      counter_high(counter + (mask & 0)), counter_high(counter + (mask & 1)),      counter_high(counter + (mask & 2)), counter_high(counter + (mask & 3)));}void blake3_hash4_neon(const uint8_t *const *inputs, size_t blocks,                       const uint32_t key[8], uint64_t counter,                       bool increment_counter, uint8_t flags,                       uint8_t flags_start, uint8_t flags_end, uint8_t *out) {  uint32x4_t h_vecs[8] = {      set1_128(key[0]), set1_128(key[1]), set1_128(key[2]), set1_128(key[3]),      set1_128(key[4]), set1_128(key[5]), set1_128(key[6]), set1_128(key[7]),  };  uint32x4_t counter_low_vec, counter_high_vec;  load_counters4(counter, increment_counter, &counter_low_vec,                 &counter_high_vec);  uint8_t block_flags = flags | flags_start;  for (size_t block = 0; block < blocks; block++) {    if (block + 1 == blocks) {      block_flags |= flags_end;    }    uint32x4_t block_len_vec = set1_128(BLAKE3_BLOCK_LEN);    uint32x4_t block_flags_vec = set1_128(block_flags);    uint32x4_t msg_vecs[16];    transpose_msg_vecs4(inputs, block * BLAKE3_BLOCK_LEN, msg_vecs);    uint32x4_t v[16] = {        h_vecs[0],       h_vecs[1],        h_vecs[2],       h_vecs[3],        h_vecs[4],       h_vecs[5],        h_vecs[6],       h_vecs[7],        set1_128(IV[0]), set1_128(IV[1]),  set1_128(IV[2]), set1_128(IV[3]),        counter_low_vec, counter_high_vec, block_len_vec,   block_flags_vec,    };    round_fn4(v, msg_vecs, 0);    round_fn4(v, msg_vecs, 1);    round_fn4(v, msg_vecs, 2);    round_fn4(v, msg_vecs, 3);    round_fn4(v, msg_vecs, 4);    round_fn4(v, msg_vecs, 5);    round_fn4(v, msg_vecs, 6);    h_vecs[0] = xor_128(v[0], v[8]);    h_vecs[1] = xor_128(v[1], v[9]);    h_vecs[2] = xor_128(v[2], v[10]);    h_vecs[3] = xor_128(v[3], v[11]);    h_vecs[4] = xor_128(v[4], v[12]);    h_vecs[5] = xor_128(v[5], v[13]);    h_vecs[6] = xor_128(v[6], v[14]);    h_vecs[7] = xor_128(v[7], v[15]);    block_flags = flags;  }  transpose_vecs_128(&h_vecs[0]);  transpose_vecs_128(&h_vecs[4]);  // The first four vecs now contain the first half of each output, and the  // second four vecs contain the second half of each output.  storeu_128(h_vecs[0], &out[0 * sizeof(uint32x4_t)]);  storeu_128(h_vecs[4], &out[1 * sizeof(uint32x4_t)]);  storeu_128(h_vecs[1], &out[2 * sizeof(uint32x4_t)]);  storeu_128(h_vecs[5], &out[3 * sizeof(uint32x4_t)]);  storeu_128(h_vecs[2], &out[4 * sizeof(uint32x4_t)]);  storeu_128(h_vecs[6], &out[5 * sizeof(uint32x4_t)]);  storeu_128(h_vecs[3], &out[6 * sizeof(uint32x4_t)]);  storeu_128(h_vecs[7], &out[7 * sizeof(uint32x4_t)]);}/* * ---------------------------------------------------------------------------- * hash_many_neon * ---------------------------------------------------------------------------- */void blake3_compress_in_place_portable(uint32_t cv[8],                                       const uint8_t block[BLAKE3_BLOCK_LEN],                                       uint8_t block_len, uint64_t counter,                                       uint8_t flags);INLINE void hash_one_neon(const uint8_t *input, size_t blocks,                          const uint32_t key[8], uint64_t counter,                          uint8_t flags, uint8_t flags_start, uint8_t flags_end,                          uint8_t out[BLAKE3_OUT_LEN]) {  uint32_t cv[8];  memcpy(cv, key, BLAKE3_KEY_LEN);  uint8_t block_flags = flags | flags_start;  while (blocks > 0) {    if (blocks == 1) {      block_flags |= flags_end;    }    // TODO: Implement compress_neon. However note that according to    // https://github.com/BLAKE2/BLAKE2/commit/7965d3e6e1b4193438b8d3a656787587d2579227,    // compress_neon might not be any faster than compress_portable.    blake3_compress_in_place_portable(cv, input, BLAKE3_BLOCK_LEN, counter,                                      block_flags);    input = &input[BLAKE3_BLOCK_LEN];    blocks -= 1;    block_flags = flags;  }  memcpy(out, cv, BLAKE3_OUT_LEN);}void blake3_hash_many_neon(const uint8_t *const *inputs, size_t num_inputs,                           size_t blocks, const uint32_t key[8],                           uint64_t counter, bool increment_counter,                           uint8_t flags, uint8_t flags_start,                           uint8_t flags_end, uint8_t *out) {  while (num_inputs >= 4) {    blake3_hash4_neon(inputs, blocks, key, counter, increment_counter, flags,                      flags_start, flags_end, out);    if (increment_counter) {      counter += 4;    }    inputs += 4;    num_inputs -= 4;    out = &out[4 * BLAKE3_OUT_LEN];  }  while (num_inputs > 0) {    hash_one_neon(inputs[0], blocks, key, counter, flags, flags_start,                  flags_end, out);    if (increment_counter) {      counter += 1;    }    inputs += 1;    num_inputs -= 1;    out = &out[BLAKE3_OUT_LEN];  }}