linux-kernel - Re: [PATCH RESEND v5 0/6] crypto: algif

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Date:	Wed, 11 May 2016 15:25:21 +0100
From:	David Howells <dhowells@...hat.com>
To:	Tadeusz Struk <tadeusz.struk@...el.com>
Cc:	dhowells@...hat.com, herbert@...dor.apana.org.au,
	smueller@...onox.de, linux-api@...r.kernel.org,
	marcel@...tmann.org, linux-kernel@...r.kernel.org,
	keyrings@...r.kernel.org, linux-crypto@...r.kernel.org,
	dwmw2@...radead.org, davem@...emloft.net
Subject: Re: [PATCH RESEND v5 0/6] crypto: algif - add akcipher

Tadeusz Struk <tadeusz.struk@...el.com> wrote:

> This is the same v5 version as before rebased on top of
> http://git.kernel.org/cgit/linux/kernel/git/dhowells/linux-fs.git/log/?h=keys-asym-keyctl

I've just reposted this.  The interface you're using should be the same, I
think, but the details underneath have changed.

Also, you can now supply private keys to the kernel if they're PKCS#8 encoded
and keyctls are supplied that do encryption, decryption, signing and
verifying, e.g.:

	j=`openssl pkcs8 -in ~/pkcs7/firmwarekey2.priv -topk8 -nocrypt -outform DER | \
	    keyctl padd asymmetric foo @s`
	echo -n abcdefghijklmnopqrst >/tmp/data
	keyctl pkey_encrypt $j 0 /tmp/data enc=pkcs1 >/tmp/enc
	keyctl pkey_decrypt $j 0 /tmp/enc enc=pkcs1 >/tmp/dec
	cmp /tmp/data /tmp/dec
	keyctl pkey_sign $j 0 /tmp/data enc=pkcs1 hash=sha1 >/tmp/sig
	keyctl pkey_verify $j 0 /tmp/data /tmp/sig enc=pkcs1 hash=sha1

David