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Re: [Sks-devel] peer request for pgp.uplinklabs.net
From: |
Gunnar Wolf |
Subject: |
Re: [Sks-devel] peer request for pgp.uplinklabs.net |
Date: |
Wed, 31 Aug 2016 10:18:59 -0500 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
Andrew Gallagher dijo [Wed, Aug 31, 2016 at 10:14:01AM +0100]:
> I'm sceptical of the utility of ECC keys personally. They were first
> proposed as a way of reducing work and storage space (because the
> space of usable ECC keys is more compact than the sparsely
> distributed RSA primes). But they've taken so long to catch on that
> technology advancement has made their original justification largely
> irrelevant (the only exception to my knowledge being DNSSEC, where
> signature length restrictions are still important). And because the
> ECC keyspace is more efficiently packed, it is theoretically *more*
> susceptible to quantum attacks.
I'm far from a worthy crypto geek myself, but still — Storage space is
not the decisive issue; storing a million 4096-bit keys is only an
order of magnitude more than storing a million 256-bit keys (the same
proportion would naturally apply for a single key), and information
appended to the keys themselves (such as photo attributes and the
signatures that constitute the web of trust) make the difference quite
unnoticeable.
What is really a difference is the arithmetic operations upon which
they are based: Encryption and decryption under RSA are based on long
series of multiplications (or rather, huge exponentiation). Under ECC,
the operations are "just" series of additions. Adding is way cheaper
for a computer than multiplying, so your hardware will be able to
perform many, many more cryptographic operations with ECC than with
RSA.
- [Sks-devel] peer request for pgp.uplinklabs.net, Steven Noonan, 2016/08/30
- [Sks-devel] peer request for pgp.uplinklabs.net, Steven Noonan, 2016/08/31
- Re: [Sks-devel] peer request for pgp.uplinklabs.net, Chris Boot, 2016/08/31
- Re: [Sks-devel] peer request for pgp.uplinklabs.net, Hillebrand van de Groep, 2016/08/31
- Re: [Sks-devel] peer request for pgp.uplinklabs.net, Chris Boot, 2016/08/31
- Re: [Sks-devel] peer request for pgp.uplinklabs.net, Andrew Gallagher, 2016/08/31
- Re: [Sks-devel] peer request for pgp.uplinklabs.net,
Gunnar Wolf <=
- Re: [Sks-devel] peer request for pgp.uplinklabs.net, Christoph Egger, 2016/08/31
- Re: [Sks-devel] peer request for pgp.uplinklabs.net, Andrew Gallagher, 2016/08/31