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Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[
From: |
Daniel P. Berrange |
Subject: |
Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows |
Date: |
Mon, 24 Apr 2017 16:41:17 +0100 |
User-agent: |
Mutt/1.7.1 (2016-10-04) |
On Mon, Apr 24, 2017 at 03:05:40PM +0100, Peter Maydell wrote:
> On 24 April 2017 at 14:57, Daniel P. Berrange <address@hidden> wrote:
> > This is the extent of gnutls's code in this area
> >
> > https://gitlab.com/gnutls/gnutls/blob/master/lib/nettle/sysrng-windows.c
> >
> > Our API has the same usage scenario as this, hence my preference to mirror
> > what gnutls & other crypto libraries are using.
>
> I see that only calls CryptAcquireContext once, not twice.
> I also think we should do what that code does and use a static
> variable to avoid calling CryptAcquireContext repeatedly.
Ok, fair enough.
We can have the existing qcrypto_init() call a qcrypto_random_init()
method to do the one-time initialization task, since that's already
required to run early in order to initialize gnutls when we use it.
> If we want to follow gnutls we should just borrow that code
> (tweaking the function names etc as appropriate) and credit it:
> gnutls is LGPL2.1 so no problem doing that.
Yep
Regards,
Daniel
--
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- [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, GM . Ijewski, 2017/04/24
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, Daniel P. Berrange, 2017/04/24
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, Peter Maydell, 2017/04/24
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, Daniel P. Berrange, 2017/04/24
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, Peter Maydell, 2017/04/24
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, Daniel P. Berrange, 2017/04/24
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, Peter Maydell, 2017/04/24
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows,
Daniel P. Berrange <=
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, Peter Maydell, 2017/04/24
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, Daniel P. Berrange, 2017/04/24
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, Geert Martin Ijewski, 2017/04/24
- Re: [Qemu-devel] error: qcrypto_random_bytes() tried to read from /dev/[u]random, even on windows, Daniel P. Berrange, 2017/04/24