whoami.cpp

unsigned int funcT(unsigned int a) {
    unsigned int res = 0;
    res ^= p[0][a & 0x0000000f];
    res ^= (p[1][((a & 0x000000f0) >> 4)] << 4);
    res ^= (p[2][((a & 0x00000f00) >> 8)] << 8);
    res ^= (p[3][((a & 0x0000f000) >> 12)] << 12);
    res ^= (p[4][((a & 0x000f0000) >> 16)] << 16);
    res ^= (p[5][((a & 0x00f00000) >> 20)] << 20);
    res ^= (p[6][((a & 0x0f000000) >> 24)] << 24);
    res ^= (p[7][((a & 0xf0000000) >> 28)] << 28);
    return res;
}

unsigned int funcG(unsigned int a, unsigned int k) {
    unsigned int c = a + k;
    unsigned int tmp = funcT(c, print);
    unsigned int r = (tmp << 11) | (tmp >> 21);
    return r;
}

void Round(unsigned int* a1, unsigned int* a0, unsigned int k) {
    unsigned int a;
    unsigned int tmp;
    a = *a0;
    tmp = funcG(*a0, k);
    *a0 = *a1 ^ tmp;
    *a1 = a;
}