vincenzo,

let me make sure I understand what you want to implement:

You want a block that processes N=6048 BYTES at a time.

The input is x1,x2,x3…,xN

and the output is another N=6048 bytes which are a

permutation of the input block, ie,

y1,y2,…,yN

such that

y(i)=x(permutation(i)).

Next time another block of N BYTES is input and permuted in the same

way, etc…

The “permutation” function is prespecified and constant

throughout the operation.

Is this correct?

If not, could you please specify exactly the functionality

you want to implement.

Achilleas