[RC5] 40 bit encryption

Scott Campbell pondafarr at microgear.net
Fri Mar 15 19:55:29 EST 2002


You'd have to remember, that most hackers already have tools to crack
passwords set on the server permissions...i'd bet it could be done by a
dedicated jerk alot quicker than the 2-3 days Orthanc suggested.

Scott

-----Original Message-----
From: owner-rc5 at lists.distributed.net
[mailto:owner-rc5 at lists.distributed.net]On Behalf Of Orthanc
Sent: Friday, March 15, 2002 08:19
To: rc5 at lists.distributed.net
Subject: Re: [RC5] 40 bit encryption


If you assume only one computer
1.4*10^9 = 1,400,000,000 cycles per sec
I think someone said on here recently that the RC5 core takes 250 cycles per
key.
so 5,600,000 keys per sec
196,341.36210285714285714285714286 sec for key space

about 2 - 3 days.
Though dnet could do it in less than a second.

Orthanc.


----- Original Message -----
From: "Brad T." <bradtod at rocketmail.com>
To: <rc5 at lists.distributed.net>
Sent: Saturday, March 16, 2002 2:16 AM
Subject: [RC5] 40 bit encryption


> how long would it take to crack 40bit encryption? Assuming a Athlon TB
> 1.4ghz computer was used. Some web sites still use this level of
> security so how safe are they?
>
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