On 09/03/2010 01:22 PM, Ben Laurie wrote:
On 03/09/2010 17:01, Marsh Ray wrote:
I played with some simulations with randomly-generated mappings, the
observed value would at times wander over 1.0 BoE/log2 N.
I think when I did this, I fully enumerated the behaviour of a truncated
hash (e.g. the
On 03/09/2010 17:01, Marsh Ray wrote:
> I played with some simulations with randomly-generated mappings, the
> observed value would at times wander over 1.0 BoE/log2 N.
I think when I did this, I fully enumerated the behaviour of a truncated
hash (e.g. the first 20 bits of MD5).
Cheers,
Ben.
--
On 2010-09-02, travis+ml-cryptogra...@subspacefield.org wrote:
I hear that NIST Key Mgmt guideline (SP 800-57) suggests that the RSA
key size equivalent to a 256 bit symmetric key is roughly 15360 bits.
I haven't actually checked this reference, so I don't know how they
got such a big number;
On 09/03/2010 03:45 AM, Ben Laurie wrote:
That's the whole point - a hash function used on an arbitrary message
produces one of its possible outputs. Feed that hash back in and it
produces one of a subset of its possible outputs. Each time you do this,
you lose a little entropy (I can't remember
On Fri, Sep 03, 2010 at 09:45:20AM +0100, Ben Laurie wrote:
>
> That's the whole point - a hash function used on an arbitrary message
> produces one of its possible outputs. Feed that hash back in and it
> produces one of a subset of its possible outputs. Each time you do this,
> you lose a little
Flamewar seems to have broken out:
http://neteffect.foreignpolicy.com/posts/2010/09/02/hay_what
I've had issues[1] with some of Morozov's previous writing[2] but if EM is
reporting accurately how Haystack is deployed - let alone used - then even
laying aside Kerckhoffs' principle / the
On 01/09/2010 22:45, Zooko O'Whielacronx wrote:
> On Wed, Sep 1, 2010 at 2:55 PM, Ben Laurie wrote:
>> Or, to put it another way, in order to show that a Merkle signature is
>> at least as good as any other, then you'll first have to show that an
>> iterated hash is at least as secure as a non-ite
