C++ (Cpp) secp256k1_sha256_initialize Examples

Example #1

File: bench_internal.c Project: stealthylabs/secp256k1

void bench_sha256(void* arg) {
    int i;
    bench_inv_t *data = (bench_inv_t*)arg;
    secp256k1_sha256_t sha;

    for (i = 0; i < 20000; i++) {
        secp256k1_sha256_initialize(&sha);
        secp256k1_sha256_write(&sha, data->data, 32);
        secp256k1_sha256_finalize(&sha, data->data);
    }
}

Example #2

File: bench_ecmult.c Project: ElementsProject/elements

static void generate_scalar(uint32_t num, secp256k1_scalar* scalar) {
    secp256k1_sha256 sha256;
    unsigned char c[11] = {'e', 'c', 'm', 'u', 'l', 't', 0, 0, 0, 0};
    unsigned char buf[32];
    int overflow = 0;
    c[6] = num;
    c[7] = num >> 8;
    c[8] = num >> 16;
    c[9] = num >> 24;
    secp256k1_sha256_initialize(&sha256);
    secp256k1_sha256_write(&sha256, c, sizeof(c));
    secp256k1_sha256_finalize(&sha256, buf);
    secp256k1_scalar_set_b32(scalar, buf, &overflow);
    CHECK(!overflow);
}