From patchwork Wed Dec 1 00:48:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolai Stange X-Patchwork-Id: 520622 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6AD2C4321E for ; Wed, 1 Dec 2021 00:51:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346014AbhLAAyT (ORCPT ); Tue, 30 Nov 2021 19:54:19 -0500 Received: from smtp-out1.suse.de ([195.135.220.28]:46120 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345927AbhLAAwy (ORCPT ); Tue, 30 Nov 2021 19:52:54 -0500 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id DAFD4218B0; Wed, 1 Dec 2021 00:49:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1638319773; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NXnywiVMHG+5JOnuWv+Zk8oIW2CyLkb/2z/hvW1vh6c=; b=FL5xOUfG+UMRPlr6thZJghC1woUSKy+DdD9o2ZlfeP90JHq//JFGgKyGITOwTXMlZmE0Sv 7OqqBQhnTy9ws9hXmbN3rhROpLfAgPjM4Vk+sKTBJpiV5R5ngvi0Kc2eWrLUEzyrTthF9j clqOTZ1r45QcKMdA7qkpKN7ZCoB2onM= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1638319773; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NXnywiVMHG+5JOnuWv+Zk8oIW2CyLkb/2z/hvW1vh6c=; b=FxOevjpFK5oGFKxLlqoTLN0WHV7zO1HyOO8EJ8oeC4C95OhkfbO9V9JAF0m01298VsM63K qImgpgq2Tbn8aFBQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id C789F13C10; Wed, 1 Dec 2021 00:49:33 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 1vAwL53GpmEAKQAAMHmgww (envelope-from ); Wed, 01 Dec 2021 00:49:33 +0000 From: Nicolai Stange To: Herbert Xu , "David S. Miller" Cc: =?utf-8?q?Stephan_M=C3=BCller?= , Hannes Reinecke , Torsten Duwe , Zaibo Xu , Giovanni Cabiddu , David Howells , Jarkko Sakkinen , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, qat-linux@intel.com, keyrings@vger.kernel.org, Nicolai Stange Subject: [PATCH 14/18] lib/mpi: export mpi_rshift Date: Wed, 1 Dec 2021 01:48:54 +0100 Message-Id: <20211201004858.19831-15-nstange@suse.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20211201004858.19831-1-nstange@suse.de> References: <20211201004858.19831-1-nstange@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org A subsequent patch will make the crypto/dh's dh_is_pubkey_valid() to calculate a safe-prime groups Q parameter from P: Q = (P - 1) / 2. For implementing this, mpi_rshift() will be needed. Export it so that it's accessible from crypto/dh. Signed-off-by: Nicolai Stange --- lib/mpi/mpi-bit.c | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/mpi/mpi-bit.c b/lib/mpi/mpi-bit.c index 142b680835df..070ba784c9f1 100644 --- a/lib/mpi/mpi-bit.c +++ b/lib/mpi/mpi-bit.c @@ -242,6 +242,7 @@ void mpi_rshift(MPI x, MPI a, unsigned int n) } MPN_NORMALIZE(x->d, x->nlimbs); } +EXPORT_SYMBOL_GPL(mpi_rshift); /**************** * Shift A by COUNT limbs to the left