In DES, the first step of driving subkey is to perform the P…
In DES, the first step of driving subkey is to perform the Permuted Choice One (PC-1) defined in Table C.3(a). For the following 64-bit key, perform the PC-1 to reduce it from 64 bits to 56 bits. 1 1 1 1 1 1 1 0 1 1 0 1 1 1 0 0 1 0 1 1 1 0 1 0 1 0 0 1 1 0 0 0 0 1 1 1 0 1 1 0 0 1 0 1 0 1 0 0 0 0 1 1 0 0 1 0 0 0 0 1 0 0 0 0