Re: DSA speed vs AES speed
- From: ggr@xxxxxxxxxxxx (Gregory G Rose)
- Date: 27 Feb 2006 16:39:05 -0800
In article <44030a68$0$48462$892e7fe2@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
Ignacio G.T. <igtorque.remove@xxxxxxxxxxxxxxx> wrote:
>Now, we have to encrypt some of these messages. We are planning to use
>AES with 128 or 256 bits keys.
>
>And the question is: approximately, how much time should we expect this
>encryption to take? Much more than 10 seconds? Much less? Same order of
>magnitude?
Much less. Negligible w.r.t. the DSA part.
>When I first met encryption 10 years ago, it was "popular wisdom" that
>symmetric key algorithms (like DES) were faster than public key ones
>(like DSA or RSA). But AES was inexistent then, and I don't know if its
>speed compares favourably to DES's speed or not.
Generally speaking it is faster in software than
DES, and encrypts more at each step, for a double
win.
But where are you going to get the encryption key
from? This, it seems to me, will actually be the
hard part of the problem.
Greg.
--
Greg Rose
232B EC8F 44C6 C853 D68F E107 E6BF CD2F 1081 A37C
Qualcomm Australia: http://www.qualcomm.com.au
.
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