From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A43B3524B; Tue, 23 Jan 2024 01:09:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705972172; cv=none; b=PbaHMx6XB9MPwXSFoqk9Yvyo+rBP/2ty6Om1b6cjOGcSmTDpIz0HWe13tj/hrPbHlhEqct/7oxFE2O36mvQdZeFX2vec9nw0xA42NY+jkHR6AGOaELSgFn/6WnPdK+XTrvGil0Gd6znw1nV3NmBlDqjx8UsUjabpzkGmTX39qSo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705972172; c=relaxed/simple; bh=Zgi1H+yrree/5r7r6rt3FHSrQfAGiLU94khsd+2nYKA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nf/jRUs1WReVGk05vEZLKq7231IYq03x+5siqZ/ipMWFFRsT7/MuDmhR3Hgm1nCFBJh8SDtXu5DXOcgHXu24QRQZ/aEo0m5l019TYchKWLWarlFDkLiyOnOO3A1JEy7ILp+Yt/Rz+U/epLX9D9YhG4UOM52cpqiC9xGFsxNFp2M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=iL/XYSQb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="iL/XYSQb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B79AC433C7; Tue, 23 Jan 2024 01:09:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1705972172; bh=Zgi1H+yrree/5r7r6rt3FHSrQfAGiLU94khsd+2nYKA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iL/XYSQbiyRgxPXbGddOGBE6I+OUJFqSOQlZdj0L2sNDnPfYBwcsSli/ojigMJ+7+ b8pwsYaNAswFNz6lz7arX5NnLwSb5rmuHdEEIiweQJrIF+DVuFx2gRbrkIz4NpEhLh HwWrkA5FuxqE2T+XleBce41k3mIdSz46PNEUzFSg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ovidiu Panait , Herbert Xu , Sasha Levin Subject: [PATCH 5.15 098/374] crypto: sahara - remove FLAGS_NEW_KEY logic Date: Mon, 22 Jan 2024 15:55:54 -0800 Message-ID: <20240122235748.009220940@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240122235744.598274724@linuxfoundation.org> References: <20240122235744.598274724@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ovidiu Panait [ Upstream commit 8fd183435728b139248a77978ea3732039341779 ] Remove the FLAGS_NEW_KEY logic as it has the following issues: - the wrong key may end up being used when there are multiple data streams: t1 t2 setkey() encrypt() setkey() encrypt() encrypt() <--- key from t2 is used - switching between encryption and decryption with the same key is not possible, as the hdr flags are only updated when a new setkey() is performed With this change, the key is always sent along with the cryptdata when performing encryption/decryption operations. Fixes: 5de8875281e1 ("crypto: sahara - Add driver for SAHARA2 accelerator.") Signed-off-by: Ovidiu Panait Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/sahara.c | 34 +++++++++++++--------------------- 1 file changed, 13 insertions(+), 21 deletions(-) diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c index b07ae4ba165e..84a7c4de537a 100644 --- a/drivers/crypto/sahara.c +++ b/drivers/crypto/sahara.c @@ -44,7 +44,6 @@ #define FLAGS_MODE_MASK 0x000f #define FLAGS_ENCRYPT BIT(0) #define FLAGS_CBC BIT(1) -#define FLAGS_NEW_KEY BIT(3) #define SAHARA_HDR_BASE 0x00800000 #define SAHARA_HDR_SKHA_ALG_AES 0 @@ -142,8 +141,6 @@ struct sahara_hw_link { }; struct sahara_ctx { - unsigned long flags; - /* AES-specific context */ int keylen; u8 key[AES_KEYSIZE_128]; @@ -448,26 +445,22 @@ static int sahara_hw_descriptor_create(struct sahara_dev *dev) int i, j; int idx = 0; - /* Copy new key if necessary */ - if (ctx->flags & FLAGS_NEW_KEY) { - memcpy(dev->key_base, ctx->key, ctx->keylen); - ctx->flags &= ~FLAGS_NEW_KEY; + memcpy(dev->key_base, ctx->key, ctx->keylen); - if (dev->flags & FLAGS_CBC) { - dev->hw_desc[idx]->len1 = AES_BLOCK_SIZE; - dev->hw_desc[idx]->p1 = dev->iv_phys_base; - } else { - dev->hw_desc[idx]->len1 = 0; - dev->hw_desc[idx]->p1 = 0; - } - dev->hw_desc[idx]->len2 = ctx->keylen; - dev->hw_desc[idx]->p2 = dev->key_phys_base; - dev->hw_desc[idx]->next = dev->hw_phys_desc[1]; + if (dev->flags & FLAGS_CBC) { + dev->hw_desc[idx]->len1 = AES_BLOCK_SIZE; + dev->hw_desc[idx]->p1 = dev->iv_phys_base; + } else { + dev->hw_desc[idx]->len1 = 0; + dev->hw_desc[idx]->p1 = 0; + } + dev->hw_desc[idx]->len2 = ctx->keylen; + dev->hw_desc[idx]->p2 = dev->key_phys_base; + dev->hw_desc[idx]->next = dev->hw_phys_desc[1]; + dev->hw_desc[idx]->hdr = sahara_aes_key_hdr(dev); - dev->hw_desc[idx]->hdr = sahara_aes_key_hdr(dev); + idx++; - idx++; - } dev->nb_in_sg = sg_nents_for_len(dev->in_sg, dev->total); if (dev->nb_in_sg < 0) { @@ -609,7 +602,6 @@ static int sahara_aes_setkey(struct crypto_skcipher *tfm, const u8 *key, /* SAHARA only supports 128bit keys */ if (keylen == AES_KEYSIZE_128) { memcpy(ctx->key, key, keylen); - ctx->flags |= FLAGS_NEW_KEY; return 0; } -- 2.43.0