Re: Safe password?

> >> > I use an encryption program that uses AES-256 as its encryption
> >> > algorithm but only allows passwords with a maximum length of 16
> >> > characters. Is it possible to create a safe password with only 16
> >> > characters for this encryption type?
> >>
> >>
> >> What character set is permitted?
> >> eans,
> >> If 96 characters are permitted and you choose them randomly then the
> > number
> >> of bits of entropy from your password can be calculated with this
simple
> >> formula.
> >>
> >> (ln (96^16)) / ln 2 or about 105 bits.
> >>
> >> --
> >> LTP
> >>
> >> :)
> >>
> >>
> >
> >
> > Hello
> >
> > I disagree, because you can use dictionnaries to attack your password.
> > 2000 words is enough to read a newspaper.
> > As words are 5 characters long on the average, there are 3 or 4 words in
a
> > 16 characters.
> > So the formula is more or less 2000^5, which is sghlitly more than 50
> > bits.
> > A far worse result than 105 bits.
> >
> > Indeed if you use rare words, you will probably need a 20,000 words
> > dictionnary which will give a key of 70 bits.
> >
> > To protect against dictionnary attacks, do not use spaces or take only
the
> > first letter of every words of a passphrase.
>
>
> What on earth are you talking about?
>
> I am talking about randomly generated characters - where did this talk of
> words come from?
>
> Do you think the only passwords in the world are sentences?
>
> --
> LTP
>
> :)
>
>

OK, you are right you were speaking of randomly generated characters.
So my comment is not adequate.

JP


.

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