Posts by amantrappedincebu

Reg reader rages over Virgin Media's email password policy

hashed passwords

If you can logon with three randomly chosen characters of your password that surely means the password is stored in plain text. Storing just a hashed number is more secure especially if hashed with the user name.

Compsci boffin publishes proof-of-concept code for 54-year-old zero-day in Universal Turing Machine

Infinity

Of course the fault with the UTM is in the spec. There's no such thing as a tape, or anything else physical, of infinite length. That's the same fault as Godel's infinite string problem. Yes pi is of infinite length at least in decimal, but that number base can't even express a third, which is simple in trinary, 0.1. So I suggest there are three tapes each of finite length, the first being the size of the base being used, the second being the code and the third the data. Now the base to be used could be a large number (say 1 less than 2 to the power 282,589,933) and would have to be specified in a pre-defined number base otherwise you'd need a fourth tape to specify that . . . I begin to see a problem