void bench_setup(void* arg) {
bench_inv_t *data = (bench_inv_t*)arg;
static const unsigned char init_x[32] = {
0x02, 0x03, 0x05, 0x07, 0x0b, 0x0d, 0x11, 0x13,
0x17, 0x1d, 0x1f, 0x25, 0x29, 0x2b, 0x2f, 0x35,
0x3b, 0x3d, 0x43, 0x47, 0x49, 0x4f, 0x53, 0x59,
0x61, 0x65, 0x67, 0x6b, 0x6d, 0x71, 0x7f, 0x83
};
static const unsigned char init_y[32] = {
0x82, 0x83, 0x85, 0x87, 0x8b, 0x8d, 0x81, 0x83,
0x97, 0xad, 0xaf, 0xb5, 0xb9, 0xbb, 0xbf, 0xc5,
0xdb, 0xdd, 0xe3, 0xe7, 0xe9, 0xef, 0xf3, 0xf9,
0x11, 0x15, 0x17, 0x1b, 0x1d, 0xb1, 0xbf, 0xd3
};
secp256k1_scalar_set_b32(&data->scalar_x, init_x, NULL);
secp256k1_scalar_set_b32(&data->scalar_y, init_y, NULL);
secp256k1_fe_set_b32(&data->fe_x, init_x);
secp256k1_fe_set_b32(&data->fe_y, init_y);
CHECK(secp256k1_ge_set_xo_var(&data->ge_x, &data->fe_x, 0));
CHECK(secp256k1_ge_set_xo_var(&data->ge_y, &data->fe_y, 1));
secp256k1_gej_set_ge(&data->gej_x, &data->ge_x);
secp256k1_gej_set_ge(&data->gej_y, &data->ge_y);
memcpy(data->data, init_x, 32);
memcpy(data->data + 32, init_y, 32);
}
static int secp256k1_pubkey_load(const secp256k1_context* ctx, secp256k1_ge* ge, const secp256k1_pubkey* pubkey) {
if (sizeof(secp256k1_ge_storage) == 64) {
/* When the secp256k1_ge_storage type is exactly 64 byte, use its
* representation inside secp256k1_pubkey, as conversion is very fast.
* Note that secp256k1_pubkey_save must use the same representation. */
secp256k1_ge_storage s;
memcpy(&s, &pubkey->data[0], sizeof(s));
secp256k1_ge_from_storage(ge, &s);
} else {
/* Otherwise, fall back to 32-byte big endian for X and Y. */
secp256k1_fe x, y;
secp256k1_fe_set_b32(&x, pubkey->data);
secp256k1_fe_set_b32(&y, pubkey->data + 32);
secp256k1_ge_set_xy(ge, &x, &y);
}
ARG_CHECK(!secp256k1_fe_is_zero(&ge->x));
return 1;
}
void random_fe(secp256k1_fe_t *x) {
unsigned char bin[32];
do {
secp256k1_rand256(bin);
if (secp256k1_fe_set_b32(x, bin)) {
return;
}
} while(1);
}
void random_field_element_test(secp256k1_fe_t *fe) {
do {
unsigned char b32[32];
secp256k1_rand256_test(b32);
if (secp256k1_fe_set_b32(fe, b32)) {
break;
}
} while(1);
}
void random_field_element_test(secp256k1_fe_t *fe) {
do {
unsigned char b32[32];
secp256k1_rand256_test(b32);
secp256k1_num_t num;
secp256k1_num_set_bin(&num, b32, 32);
if (secp256k1_num_cmp(&num, &secp256k1_fe_consts->p) >= 0)
continue;
secp256k1_fe_set_b32(fe, b32);
break;
} while(1);
}
void precomputeTable(int window_size){
secp256k1_gej_t gj; // base point in jacobian coordinates
secp256k1_gej_t *table;
WINDOW_SIZE = window_size;
numberOfValues = (int) pow(2.0,window_size);
if (256 % window_size == 0){
numberOfWindows = (256 / window_size);
}else{
numberOfWindows = (256 / window_size) + 1;
}
remmining = 256 % window_size;
table = (secp256k1_gej_t *)malloc(numberOfWindows*numberOfValues*sizeof(secp256k1_gej_t));
prec = (secp256k1_ge_t *)malloc(numberOfWindows*numberOfValues*sizeof(secp256k1_ge_t));
secp256k1_gej_set_ge(&gj, &secp256k1_ge_const_g);
printf("%d %d %d %d\n",window_size,numberOfWindows,numberOfValues,remmining);
secp256k1_ge_const_g;
{
static const unsigned char nums_b32[33] = "The scalar for this x is unknown";
secp256k1_fe_t nums_x;
secp256k1_ge_t nums_ge;
VERIFY_CHECK(secp256k1_fe_set_b32(&nums_x, nums_b32));
VERIFY_CHECK(secp256k1_ge_set_xo_var(&nums_ge, &nums_x, 0));
secp256k1_gej_set_ge(&nums_gej, &nums_ge);
/* Add G to make the bits in x uniformly distributed. */
secp256k1_gej_add_ge_var(&nums_gej, &nums_gej, &secp256k1_ge_const_g, NULL);
}
secp256k1_gej_t gbase;
secp256k1_gej_t numsbase;
gbase = gj; /* (2^w_size)^num_of_windows * G */
numsbase = nums_gej; /* 2^num_of_windows * nums. */
for (int j = 0; j < numberOfWindows; j++) {
//[number of windows][each value from 0 - (2^window_size - 1)]
table[j*numberOfValues] = numsbase;
for (int i = 1; i < numberOfValues; i++) {
secp256k1_gej_add_var(&table[j*numberOfValues + i], &table[j*numberOfValues + i - 1], &gbase, NULL);
}
for (int i = 0; i < window_size; i++) {
secp256k1_gej_double_var(&gbase, &gbase, NULL);
}
/* Multiply numbase by 2. */
secp256k1_gej_double_var(&numsbase, &numsbase, NULL);
if (j == numberOfWindows-2) {
/* In the last iteration, numsbase is (1 - 2^j) * nums instead. */
secp256k1_gej_neg(&numsbase, &numsbase);
secp256k1_gej_add_var(&numsbase, &numsbase, &nums_gej, NULL);
}
}
secp256k1_ge_set_all_gej_var(numberOfWindows*numberOfValues, prec, table, 0);
printf("");
free(table);
}
void random_fe(secp256k1_fe_t *x) {
unsigned char bin[32];
secp256k1_rand256(bin);
secp256k1_fe_set_b32(x, bin);
}
