[PATCH v2] KEYS: Convert KEYCTL_DH_COMPUTE to use the crypto KPP API

[David Howells]

Mat Martineau <mathew.j.martineau at linux.intel.com> wrote:

> The initial Diffie-Hellman computation made direct use of the MPI
> library because the crypto module did not support DH at the time. Now
> that KPP is implemented, KEYCTL_DH_COMPUTE should use it to get rid of
> duplicate code and leverage possible hardware acceleration.

This doesn't apply to linus/master.  I've pushed the keyrings fix patches I
have, including a bunch from Eric Biggers that fix DH stuff, to:

	https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git

branch:

	keys-fixes

though I think there may be a couple of bugs in on of Eric's patches where
he's assumed that he can do:

	memzero_explicit(NULL, 0);

I'm not sure whether it's permissible to assume that memset(NULL, 0, 0) is
guaranteed to work correctly.

Note that I haven't included Eric's DH patch that was obsoleted by Stephan's
patch that was obsoleted by this one.

David
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