BESHFT
otp = RC4_STEP << BESHFT(0);
otp |= RC4_STEP << BESHFT(1);
otp |= RC4_STEP << BESHFT(2);
otp |= RC4_STEP << BESHFT(3);
otp |= RC4_STEP << BESHFT(4);
otp |= RC4_STEP << BESHFT(5);
otp |= RC4_STEP << BESHFT(6);
otp |= RC4_STEP << BESHFT(7);