linux-kernel - Re: [PATCH 3/3][RFC] tools: create power/crypto utility

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Message-ID: <CAJZ5v0hDhsxwU4X6_dCqc7P5GaTtpBeMUeJTHo9YJ8QtWinYfg@mail.gmail.com>
Date:   Thu, 21 Jun 2018 14:10:06 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Pavel Machek <pavel@....cz>
Cc:     Chen Yu <yu.c.chen@...el.com>, "Ted Ts'o" <tytso@....edu>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <len.brown@...el.com>,
        "Lee, Chun-Yi" <jlee@...e.com>, Borislav Petkov <bp@...en8.de>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Stephan Mueller <smueller@...onox.de>,
        Eric Biggers <ebiggers3@...il.com>,
        Denis Kenzior <denkenz@...il.com>
Subject: Re: [PATCH 3/3][RFC] tools: create power/crypto utility

On Thu, Jun 21, 2018 at 11:01 AM, Pavel Machek <pavel@....cz> wrote:
>
>
> On Wed 2018-06-20 17:40:51, Chen Yu wrote:
>> crypto_hibernate is a user-space utility to generate
>> 512bits AES key and pass it to the kernel via ioctl
>> for hibernation encryption.(We can also add the key
>> into kernel via keyctl if necessary, but currently
>> using ioctl seems to be more straightforward as we
>> need both the key and salt transit).
>
> Ah, here you go:
>
> https://en.wikipedia.org/wiki/Uswsusp

No, not really.

> It can already do encryption. If you see problems there, patches will
> be gladly accepted to fix them.

By whom?

> If you want to maintain uswsusp in kernel tree, I guess that would be
> an option, too.

No, it isn't an option due to the dependencies on crypto libraries.

> If you want to just help swsusp, I have some patches that reduce
> duplicities between x86-32 and x86-64. It would be cool to clean them
> up and get them merged.

Sure, please submit them then.

Thanks,
Rafael