From patchwork Thu Dec 29 20:37:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladis Dronov X-Patchwork-Id: 637994 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 769A4C3DA7D for ; Thu, 29 Dec 2022 20:39:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229957AbiL2Uj2 (ORCPT ); Thu, 29 Dec 2022 15:39:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234101AbiL2Uil (ORCPT ); Thu, 29 Dec 2022 15:38:41 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99B341706C for ; Thu, 29 Dec 2022 12:37:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1672346273; 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=tKf9f+QOlMAS3BoVwJkZB8zyX8Ws7eszIN1kwxfiCPs=; b=TDYnL3b83fEAZqvmHCnDcqSoa5FbE/beweeax9M2DQwsV+RJLBnyHd+2HEHnVqqBwu55oM 73P6+n5HILbEPZ1VPbUgd7NIZJOE3m2rWqJvsLWbL2qOm8Ais7dOFKgDRtSI/Nq6nH3cPT le2tVpgpL1SaTsxKeYI6+AghQIjBHzY= 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-132-aH7VcIvzNtyy6aed1DiV1A-1; Thu, 29 Dec 2022 15:37:48 -0500 X-MC-Unique: aH7VcIvzNtyy6aed1DiV1A-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 05F741C0513D; Thu, 29 Dec 2022 20:37:48 +0000 (UTC) Received: from rules.brq.redhat.com (ovpn-208-2.brq.redhat.com [10.40.208.2]) by smtp.corp.redhat.com (Postfix) with ESMTP id D6BC3112132D; Thu, 29 Dec 2022 20:37:45 +0000 (UTC) From: Vladis Dronov To: Herbert Xu , "David S . Miller" Cc: Nicolai Stange , Elliott Robert , Stephan Mueller , Eric Biggers , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, Vladis Dronov Subject: [PATCH v2 3/6] crypto: xts - drop redundant xts key check Date: Thu, 29 Dec 2022 21:37:05 +0100 Message-Id: <20221229203708.13628-4-vdronov@redhat.com> In-Reply-To: <20221229203708.13628-1-vdronov@redhat.com> References: <20221229203708.13628-1-vdronov@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 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 Reviewed-by: Eric Biggers --- 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;