Michele wrote: > Hi, > I write a simple encoder in python and Java; they do the same > computations, with the same inputs: however they won't produce the same > output. > Let me explain with code. > > First of all, you need a test file for input: > $ dd if=/dev/urandom of=test.img bs=1048576 count=1 > > I have attached the code. > As you can see we have xor-red the same inputs (bitlists are the same, > thus the selected blocks to xor are the same - you can easily see it, > whenever a block is xor-red both programs will print out its hash). > But here comes the strange: the random_block that the > create_random_block function returns is not the same: in Java this block > has an hash which is different from the Python one. > Why?
> random_block = ['0']*blocksize should be random_block = ['\0']*blocksize As John Machin already told you in another thread -- the character "0" is not the same as the 0-byte "\0". Peter -- http://mail.python.org/mailman/listinfo/python-list
