Re: Report of collision-generation with MD5
From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
To: Tig <email@example.com> Date: Thu, 19 Aug 2004 16:53:53 +0200
In message <firstname.lastname@example.org>, Tig writes:
>On Wed, 18 Aug 2004 14:29:57 -0400
>"Peter C. Lai" <email@example.com> wrote:
>> On Wed, Aug 18, 2004 at 09:08:12PM +0300, Claudiu wrote:
>> > hello,
>> > please explain what do you mean by "reverse the hash". Is this the
>> > recreation of the originial message from its hash ?
>> The short answer is yes. The slightly longer answer is that such is
>> only one specific case. The general case is that the digest should not
>> reveal any information about the original message.
>If this is the case, then it would be very cool!
>Imagine sending 32 bytes, then 'reverse the hash' to get XX MB's worth
>of data :]
>That would be great compression!
That would not be compression (and hopefully you know it).
-- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "email@example.com"