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 4651F1852; Tue, 23 Jan 2024 00:03:35 +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=1705968215; cv=none; b=Ost5KPY5hc2s8zsDmPtR2A0fxU8YuwBZMxFVyaX1l9kpDps/tObHA61VkIHzdhCqghCN04sbR0oDPWQc3svjgQk3WJG2eZPemchDfJMBXK82Vp1a1EG7GnKg0Hw9zE403myFo6wzITatd2/Xqo0p70gX8GknN0JjszRwbRq+fAc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705968215; c=relaxed/simple; bh=m4Iq1yF2MJVlgMu/1Aic4CH49TCyr4j0svlx8Imd4AU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GbNB8jw4nPKJ8KXXd9ujUe8c2a1e2q5fcj3UJ2x2dAEKGB2hS7LNOwERU4GN8m10Q1KnIC/yq1wLLPM78LnGEOBkJksufu3FOekRXJNCP/qaRWEmj4fLKmMoCbm18GwQLBPlAS3xFakkM0bedK6+uJAgdmeiFj3zfrLD3aedMsk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=fqbo/uGY; 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="fqbo/uGY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E5336C433F1; Tue, 23 Jan 2024 00:03:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1705968215; bh=m4Iq1yF2MJVlgMu/1Aic4CH49TCyr4j0svlx8Imd4AU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fqbo/uGYdVybDszBln34VQ7KHHUSdXHlktjTTndDaEjj2KZFp09CSD2ewqo6OB5ag yIApPYTRU4IBKkJl1o4Jz6+1AZkXgzgWZp36DL/bjFsOpnl7lCgUEX1+sEotvCfpCV L0zK4BK34hhDOMvqY0ZbfW7llk4wBYTyYaZkC5Wg= 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 4.19 048/148] crypto: sahara - remove FLAGS_NEW_KEY logic Date: Mon, 22 Jan 2024 15:56:44 -0800 Message-ID: <20240122235714.378200723@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240122235712.442097787@linuxfoundation.org> References: <20240122235712.442097787@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-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 e7540a5b8197..5bd2c34a9ceb 100644 --- a/drivers/crypto/sahara.c +++ b/drivers/crypto/sahara.c @@ -46,7 +46,6 @@ #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 @@ -144,8 +143,6 @@ struct sahara_hw_link { }; struct sahara_ctx { - unsigned long flags; - /* AES-specific context */ int keylen; u8 key[AES_KEYSIZE_128]; @@ -449,26 +446,22 @@ 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) { @@ -611,7 +604,6 @@ static int sahara_aes_setkey(struct crypto_ablkcipher *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