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Subject[PATCH v2 3/5] maintainer-pgp-guide: update ECC support information
Update ECC sections with the latest details, now that Yubikeys are able
to support ED25519 curves. Tweak a few links to smartcard devices to
reflect the latest URL changes.

Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>

diff --git a/Documentation/process/maintainer-pgp-guide.rst b/Documentation/process/maintainer-pgp-guide.rst
index ead5bc815017..bf288925973e 100644
--- a/Documentation/process/maintainer-pgp-guide.rst
+++ b/Documentation/process/maintainer-pgp-guide.rst
@@ -228,11 +228,9 @@ separate signing subkey::
recommend that you create an ECC signing subkey for your kernel
work.

- If for some reason you prefer to stay with RSA subkeys, just replace
- "ed25519" with "rsa2048" in the above command. Additionally, if you
- plan to use a hardware device that does not support ED25519 ECC
- keys, like Nitrokey Pro or a Yubikey, then you should use
- "nistp256" instead or "ed25519."
+ Note, that if you plan to use a hardware device that does not
+ support ED25519 ECC keys, you should choose "nistp256" instead or
+ "ed25519."


Back up your Certify key for disaster recovery
@@ -438,7 +436,8 @@ functionality. There are several options available:
- `Yubikey 5`_: proprietary hardware and software, but cheaper than
Nitrokey Pro and comes available in the USB-C form that is more useful
with newer laptops. Offers additional security features such as FIDO
- U2F, among others, and now finally supports ECC keys (NISTP).
+ U2F, among others, and now finally supports NISTP and ED25519 ECC
+ keys.

`LWN has a good review`_ of some of the above models, as well as several
others. Your choice will depend on cost, shipping availability in your
@@ -451,7 +450,7 @@ geographical region, and open/proprietary hardware considerations.
Foundation.

.. _`Nitrokey Start`: https://shop.nitrokey.com/shop/product/nitrokey-start-6
-.. _`Nitrokey Pro 2`: https://shop.nitrokey.com/shop/product/nitrokey-pro-2-3
+.. _`Nitrokey Pro 2`: https://shop.nitrokey.com/shop/product/nkpr2-nitrokey-pro-2-3
.. _`Yubikey 5`: https://www.yubico.com/products/yubikey-5-overview/
.. _Gnuk: https://www.fsij.org/doc-gnuk/
.. _`LWN has a good review`: https://lwn.net/Articles/736231/
--
b4 0.10.0-dev-fe10a

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