From patchwork Thu Dec 9 09:03:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolai Stange X-Patchwork-Id: 12666133 X-Patchwork-Delegate: herbert@gondor.apana.org.au 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 2C93CC43217 for ; Thu, 9 Dec 2021 09:04:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235784AbhLIJIO (ORCPT ); Thu, 9 Dec 2021 04:08:14 -0500 Received: from smtp-out1.suse.de ([195.135.220.28]:55078 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235825AbhLIJII (ORCPT ); Thu, 9 Dec 2021 04:08:08 -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 29B10210FF; Thu, 9 Dec 2021 09:04:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1639040674; 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=4qEna0uTH1UTHJ6ogfrrmwa3fLSvsnDnWxQkjGAAebI=; b=MhiU269KjAOS4obbLGVQQqZxUkKt9Gt2myaii/4QpBVkJgG/HS9CRl59eZpwqtvXJ4AfWN Ne++hMjGZac4WsefswdWpmcVC/Cda7SAA52il4TtFLrKBzCvffP02xMsHCAQbj/Ci5stsl PJV4Ln7tCfSNW8mVuh930qLGgbHPBeQ= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1639040674; 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=4qEna0uTH1UTHJ6ogfrrmwa3fLSvsnDnWxQkjGAAebI=; b=gMaEGehbob7umo25DhnzChGNU770Fnhiiy61MFG/8pjhqkHGdIFe4zHyKOhcpZCOIm0GAQ pkL9IeLm/E8d3fBA== 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 12E5B13A86; Thu, 9 Dec 2021 09:04:34 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id Kx/oAqLGsWHSaQAAMHmgww (envelope-from ); Thu, 09 Dec 2021 09:04:34 +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 v2 14/18] lib/mpi: export mpi_rshift Date: Thu, 9 Dec 2021 10:03:54 +0100 Message-Id: <20211209090358.28231-15-nstange@suse.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20211209090358.28231-1-nstange@suse.de> References: <20211209090358.28231-1-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 Reviewed-by: Hannes Reinecke --- 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