From patchwork Wed Dec 21 22:41:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladis Dronov X-Patchwork-Id: 13079229 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 C2005C4332F for ; Wed, 21 Dec 2022 22:43:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235225AbiLUWnH (ORCPT ); Wed, 21 Dec 2022 17:43:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51342 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235189AbiLUWmx (ORCPT ); Wed, 21 Dec 2022 17:42:53 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 801391A3A7 for ; Wed, 21 Dec 2022 14:42:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1671662527; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=kwfJcVBxWNMAZYpPSPCoOdNBGIp3nX0+9louWAKvFDk=; b=hVF82NH0j00tHKU2ij82hcpa0HAcwKcYnZdt7JfvglQQAcu2eCIcN+83acx/9MuXqliF8k VeyPYu1rtuMES4YEr1igpx+plp2gUYUQNoEdnq+r3sf3+Iw2VydMUdk653BQ4wi65Hub4j dVRYiAvVFLtZZP/oo/vp5O5rWc13/V8= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-523-2MYamv_BNpCM3A4WlGyW7A-1; Wed, 21 Dec 2022 17:42:06 -0500 X-MC-Unique: 2MYamv_BNpCM3A4WlGyW7A-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id DF71229AA39D; Wed, 21 Dec 2022 22:42:05 +0000 (UTC) Received: from rules.brq.redhat.com (ovpn-208-11.brq.redhat.com [10.40.208.11]) by smtp.corp.redhat.com (Postfix) with ESMTP id DD71240C2064; Wed, 21 Dec 2022 22:42:03 +0000 (UTC) From: Vladis Dronov To: herbert@gondor.apana.org.au, davem@davemloft.net Cc: nstange@suse.de, elliott@hpe.com, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, smueller@chronox.de, vdronov@redhat.com Subject: [PATCH 3/6] crypto: xts - drop redundant xts key check Date: Wed, 21 Dec 2022 23:41:08 +0100 Message-Id: <20221221224111.19254-4-vdronov@redhat.com> In-Reply-To: <20221221224111.19254-1-vdronov@redhat.com> References: <20221221224111.19254-1-vdronov@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org xts_fallback_setkey() in xts_aes_set_key() will now enforce key size rule in FIPS mode when setting up the fallback algorithm keys, which makes the check in xts_aes_set_key() redundant or unreachable. So just drop this check. xts_fallback_setkey() now makes a key size check in xts_verify_key(): xts_fallback_setkey() crypto_skcipher_setkey() [ skcipher_setkey_unaligned() ] cipher->setkey() { .setkey = xts_setkey } xts_setkey() xts_verify_key() Signed-off-by: Vladis Dronov --- arch/s390/crypto/aes_s390.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c index 526c3f40f6a2..c773820e4af9 100644 --- a/arch/s390/crypto/aes_s390.c +++ b/arch/s390/crypto/aes_s390.c @@ -398,10 +398,6 @@ static int xts_aes_set_key(struct crypto_skcipher *tfm, const u8 *in_key, if (err) return err; - /* In fips mode only 128 bit or 256 bit keys are valid */ - if (fips_enabled && key_len != 32 && key_len != 64) - return -EINVAL; - /* Pick the correct function code based on the key length */ fc = (key_len == 32) ? CPACF_KM_XTS_128 : (key_len == 64) ? CPACF_KM_XTS_256 : 0;