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Thu, 6 Oct 2022 12:02:53 +0000 From: Pankaj Gupta To: jarkko@kernel.org, a.fatoum@pengutronix.de, gilad@benyossef.com, Jason@zx2c4.com, jejb@linux.ibm.com, zohar@linux.ibm.com, dhowells@redhat.com, sumit.garg@linaro.org, david@sigma-star.at, michael@walle.cc, john.ernberg@actia.se, jmorris@namei.org, serge@hallyn.com, herbert@gondor.apana.org.au, davem@davemloft.net, j.luebbe@pengutronix.de, ebiggers@kernel.org, richard@nod.at, keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, sahil.malhotra@nxp.com, kshitiz.varshney@nxp.com, horia.geanta@nxp.com, V.Sethi@nxp.com Cc: Pankaj Gupta Subject: [PATCH v0 1/8] hw-bound-key: introducing the generic structure Date: Thu, 6 Oct 2022 18:38:30 +0530 Message-Id: <20221006130837.17587-2-pankaj.gupta@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221006130837.17587-1-pankaj.gupta@nxp.com> References: <20221006130837.17587-1-pankaj.gupta@nxp.com> X-ClientProxiedBy: SI1PR02CA0011.apcprd02.prod.outlook.com (2603:1096:4:1f7::19) To DU2PR04MB8630.eurprd04.prod.outlook.com (2603:10a6:10:2dd::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8630:EE_|AM9PR04MB8523:EE_ X-MS-Office365-Filtering-Correlation-Id: 0c565679-3cfb-435b-b069-08daa792b29a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Pankaj Gupta --- include/linux/hw_bound_key.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/linux/hw_bound_key.h diff --git a/include/linux/hw_bound_key.h b/include/linux/hw_bound_key.h new file mode 100644 index 000000000000..e7f152410438 --- /dev/null +++ b/include/linux/hw_bound_key.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0-only + * + * Copyright 2022 NXP + * Author: Pankaj Gupta + */ + +#ifndef _HW_BOUND_KEY_H +#define _HW_BOUND_KEY_H + +#include "types.h" + +struct hw_bound_key_info { + /* Key types specific to the hw. [Implementation Defined] + */ + uint8_t flags; + uint8_t reserved; + /* Plain key size. + */ + uint16_t key_sz; +}; + +#define set_hbk_info(hbk_info, hw_flags, key_len) do {\ + hbk_info->flags = hw_flags;\ + hbk_info->key_sz = key_len;\ +} while (0) + +#endif /* _HW_BOUND_KEY_H */ From patchwork Thu Oct 6 13:08:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 13000190 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 4F797C4332F for ; Thu, 6 Oct 2022 12:03:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230472AbiJFMDW (ORCPT ); Thu, 6 Oct 2022 08:03:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36318 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230380AbiJFMDI (ORCPT ); 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Received: from DU2PR04MB8630.eurprd04.prod.outlook.com (2603:10a6:10:2dd::15) by VI1PR04MB7008.eurprd04.prod.outlook.com (2603:10a6:803:13b::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5676.34; Thu, 6 Oct 2022 12:03:02 +0000 Received: from DU2PR04MB8630.eurprd04.prod.outlook.com ([fe80::d551:6af4:bca4:88ea]) by DU2PR04MB8630.eurprd04.prod.outlook.com ([fe80::d551:6af4:bca4:88ea%7]) with mapi id 15.20.5676.032; Thu, 6 Oct 2022 12:03:01 +0000 From: Pankaj Gupta To: jarkko@kernel.org, a.fatoum@pengutronix.de, gilad@benyossef.com, Jason@zx2c4.com, jejb@linux.ibm.com, zohar@linux.ibm.com, dhowells@redhat.com, sumit.garg@linaro.org, david@sigma-star.at, michael@walle.cc, john.ernberg@actia.se, jmorris@namei.org, serge@hallyn.com, herbert@gondor.apana.org.au, davem@davemloft.net, j.luebbe@pengutronix.de, ebiggers@kernel.org, richard@nod.at, keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, sahil.malhotra@nxp.com, kshitiz.varshney@nxp.com, horia.geanta@nxp.com, V.Sethi@nxp.com Cc: Pankaj Gupta Subject: [PATCH v0 2/8] keys-trusted: new cmd line option added Date: Thu, 6 Oct 2022 18:38:31 +0530 Message-Id: <20221006130837.17587-3-pankaj.gupta@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221006130837.17587-1-pankaj.gupta@nxp.com> References: <20221006130837.17587-1-pankaj.gupta@nxp.com> X-ClientProxiedBy: SI1PR02CA0011.apcprd02.prod.outlook.com (2603:1096:4:1f7::19) To DU2PR04MB8630.eurprd04.prod.outlook.com (2603:10a6:10:2dd::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8630:EE_|VI1PR04MB7008:EE_ X-MS-Office365-Filtering-Correlation-Id: eafea71b-4dd8-47b3-44c2-08daa792b743 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: eafea71b-4dd8-47b3-44c2-08daa792b743 X-MS-Exchange-CrossTenant-AuthSource: DU2PR04MB8630.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Oct 2022 12:03:01.0080 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: n158RM4GMQUNY6f02H9Ga1Rg1K4IX2khJpaEMI4M42XwzElPHHYxxhkMOUL3sd1lwvaVW3+SQBHdpRAE//Gfww== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB7008 Precedence: bulk List-ID: Changes done: - new cmd line option "hw" needs to be suffix, to generate the hw bound key. for ex: $:> keyctl add trusted 'new 32 hw' @s $:> keyctl add trusted 'load $(cat ) hw' @s - Key-payload, is added with two more information element specific to HBK -- flag 'is_hw_bound' -- structure 'struct hw_bound_key_info hbk_info' Signed-off-by: Pankaj Gupta --- include/keys/trusted-type.h | 4 ++++ security/keys/trusted-keys/trusted_core.c | 16 ++++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/include/keys/trusted-type.h b/include/keys/trusted-type.h index 4eb64548a74f..bf58a204a974 100644 --- a/include/keys/trusted-type.h +++ b/include/keys/trusted-type.h @@ -7,6 +7,7 @@ #ifndef _KEYS_TRUSTED_TYPE_H #define _KEYS_TRUSTED_TYPE_H +#include #include #include #include @@ -22,6 +23,7 @@ #define MAX_BLOB_SIZE 512 #define MAX_PCRINFO_SIZE 64 #define MAX_DIGEST_SIZE 64 +#define HW_BOUND_KEY 1 struct trusted_key_payload { struct rcu_head rcu; @@ -29,6 +31,8 @@ struct trusted_key_payload { unsigned int blob_len; unsigned char migratable; unsigned char old_format; + unsigned char is_hw_bound; + struct hw_bound_key_info hbk_info; unsigned char key[MAX_KEY_SIZE + 1]; unsigned char blob[MAX_BLOB_SIZE]; }; diff --git a/security/keys/trusted-keys/trusted_core.c b/security/keys/trusted-keys/trusted_core.c index c6fc50d67214..cb1d56397ed0 100644 --- a/security/keys/trusted-keys/trusted_core.c +++ b/security/keys/trusted-keys/trusted_core.c @@ -79,6 +79,8 @@ static int datablob_parse(char **datablob, struct trusted_key_payload *p) int key_cmd; char *c; + p->is_hw_bound = !HW_BOUND_KEY; + /* main command */ c = strsep(datablob, " \t"); if (!c) @@ -94,6 +96,13 @@ static int datablob_parse(char **datablob, struct trusted_key_payload *p) if (ret < 0 || keylen < MIN_KEY_SIZE || keylen > MAX_KEY_SIZE) return -EINVAL; p->key_len = keylen; + do { + /* Second argument onwards, + * determine if tied to HW */ + c = strsep(datablob, " \t"); + if ((c != NULL) && (strcmp(c, "hw") == 0)) + p->is_hw_bound = HW_BOUND_KEY; + } while (c != NULL); ret = Opt_new; break; case Opt_load: @@ -107,6 +116,13 @@ static int datablob_parse(char **datablob, struct trusted_key_payload *p) ret = hex2bin(p->blob, c, p->blob_len); if (ret < 0) return -EINVAL; + do { + /* Second argument onwards, + * determine if tied to HW */ + c = strsep(datablob, " \t"); + if ((c != NULL) && (strcmp(c, "hw") == 0)) + p->is_hw_bound = HW_BOUND_KEY; + } while (c != NULL); ret = Opt_load; break; case Opt_update: From patchwork Thu Oct 6 13:08:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 13000191 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 A6C10C433FE for ; Thu, 6 Oct 2022 12:03:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230380AbiJFMD1 (ORCPT ); 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This helps: - This helps to influence the core processing logic for the encapsulated algorithm. - This flag is set by the consumer after allocating the tfm and before calling the function crypto_xxx_setkey(). Signed-off-by: Pankaj Gupta --- include/linux/crypto.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/crypto.h b/include/linux/crypto.h index 2324ab6f1846..cd476f8a1cb4 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -19,6 +19,7 @@ #include #include #include +#include /* * Autoloaded crypto modules should only use a prefixed name to avoid allowing @@ -639,6 +640,10 @@ struct crypto_tfm { u32 crt_flags; + unsigned int is_hbk; + + struct hw_bound_key_info hbk_info; + int node; void (*exit)(struct crypto_tfm *tfm); From patchwork Thu Oct 6 13:08:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 13000192 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 E2F08C433F5 for ; Thu, 6 Oct 2022 12:04:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231392AbiJFMD5 (ORCPT ); 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If yes, - skipping the key-length validation to fall in min-max range. Signed-off-by: Pankaj Gupta --- crypto/skcipher.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/crypto/skcipher.c b/crypto/skcipher.c index 418211180cee..0f2d0228d73e 100644 --- a/crypto/skcipher.c +++ b/crypto/skcipher.c @@ -598,7 +598,8 @@ int crypto_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned long alignmask = crypto_skcipher_alignmask(tfm); int err; - if (keylen < cipher->min_keysize || keylen > cipher->max_keysize) + if ((!tfm->base.is_hbk) + && (keylen < cipher->min_keysize || keylen > cipher->max_keysize)) return -EINVAL; if ((unsigned long)key & alignmask) From patchwork Thu Oct 6 13:08:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 13000193 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 904D2C43217 for ; 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Signed-off-by: Pankaj Gupta --- drivers/crypto/caam/blob_gen.c | 118 ++++++++++++++++++++++++++++++--- include/soc/fsl/caam-blob.h | 23 ++----- 2 files changed, 114 insertions(+), 27 deletions(-) diff --git a/drivers/crypto/caam/blob_gen.c b/drivers/crypto/caam/blob_gen.c index 6345c7269eb0..36683ec9aee0 100644 --- a/drivers/crypto/caam/blob_gen.c +++ b/drivers/crypto/caam/blob_gen.c @@ -2,6 +2,7 @@ /* * Copyright (C) 2015 Pengutronix, Steffen Trumtrar * Copyright (C) 2021 Pengutronix, Ahmad Fatoum + * Copyright 2022 NXP, Pankaj Gupta */ #define pr_fmt(fmt) "caam blob_gen: " fmt @@ -58,8 +59,19 @@ static void caam_blob_job_done(struct device *dev, u32 *desc, u32 err, void *con complete(&res->completion); } -int caam_process_blob(struct caam_blob_priv *priv, - struct caam_blob_info *info, bool encap) + + +/** caam_encap_blob - encapsulate blob + * + * @priv: instance returned by caam_blob_gen_init + * @info: pointer to blobbing info describing input key, + * output blob and key modifier buffers. + * + * returns 0 and sets info->output_len on success and returns + * a negative error code otherwise. + */ +int caam_encap_blob(struct caam_blob_priv *priv, + struct caam_blob_info *info) { struct caam_blob_job_result testres; struct device *jrdev = &priv->jrdev; @@ -72,14 +84,102 @@ int caam_process_blob(struct caam_blob_priv *priv, if (info->key_mod_len > CAAM_BLOB_KEYMOD_LENGTH) return -EINVAL; - if (encap) { - op |= OP_TYPE_ENCAP_PROTOCOL; - output_len = info->input_len + CAAM_BLOB_OVERHEAD; - } else { - op |= OP_TYPE_DECAP_PROTOCOL; - output_len = info->input_len - CAAM_BLOB_OVERHEAD; + op |= OP_TYPE_ENCAP_PROTOCOL; + output_len = info->input_len + CAAM_BLOB_OVERHEAD; + + desc = kzalloc(CAAM_BLOB_DESC_BYTES_MAX, GFP_KERNEL | GFP_DMA); + if (!desc) + return -ENOMEM; + + dma_in = dma_map_single(jrdev, info->input, info->input_len, + DMA_TO_DEVICE); + if (dma_mapping_error(jrdev, dma_in)) { + dev_err(jrdev, "unable to map input DMA buffer\n"); + ret = -ENOMEM; + goto out_free; + } + + dma_out = dma_map_single(jrdev, info->output, output_len, + DMA_FROM_DEVICE); + if (dma_mapping_error(jrdev, dma_out)) { + dev_err(jrdev, "unable to map output DMA buffer\n"); + ret = -ENOMEM; + goto out_unmap_in; + } + + /* + * A data blob is encrypted using a blob key (BK); a random number. + * The BK is used as an AES-CCM key. The initial block (B0) and the + * initial counter (Ctr0) are generated automatically and stored in + * Class 1 Context DWords 0+1+2+3. The random BK is stored in the + * Class 1 Key Register. Operation Mode is set to AES-CCM. + */ + + init_job_desc(desc, 0); + append_key_as_imm(desc, info->key_mod, info->key_mod_len, + info->key_mod_len, CLASS_2 | KEY_DEST_CLASS_REG); + append_seq_in_ptr_intlen(desc, dma_in, info->input_len, 0); + append_seq_out_ptr_intlen(desc, dma_out, output_len, 0); + append_operation(desc, op); + + print_hex_dump_debug("data@"__stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 1, info->input, + info->input_len, false); + print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 1, desc, + desc_bytes(desc), false); + + testres.err = 0; + init_completion(&testres.completion); + + ret = caam_jr_enqueue(jrdev, desc, caam_blob_job_done, &testres); + if (ret == -EINPROGRESS) { + wait_for_completion(&testres.completion); + ret = testres.err; + print_hex_dump_debug("output@"__stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 1, info->output, + output_len, false); } + if (ret == 0) + info->output_len = output_len; + + dma_unmap_single(jrdev, dma_out, output_len, DMA_FROM_DEVICE); +out_unmap_in: + dma_unmap_single(jrdev, dma_in, info->input_len, DMA_TO_DEVICE); +out_free: + kfree(desc); + + return ret; +} +EXPORT_SYMBOL(caam_encap_blob); + +/** caam_decap_blob - decapsulate blob + * + * @priv: instance returned by caam_blob_gen_init + * @info: pointer to blobbing info describing output key, + * input blob and key modifier buffers. + * + * returns 0 and sets info->output_len on success and returns + * a negative error code otherwise. + */ +int caam_decap_blob(struct caam_blob_priv *priv, + struct caam_blob_info *info) +{ + struct caam_blob_job_result testres; + struct device *jrdev = &priv->jrdev; + dma_addr_t dma_in, dma_out; + int op = OP_PCLID_BLOB; + size_t output_len; + u32 *desc; + int ret; + + if (info->key_mod_len > CAAM_BLOB_KEYMOD_LENGTH) + return -EINVAL; + + op |= OP_TYPE_DECAP_PROTOCOL; + output_len = info->input_len - CAAM_BLOB_OVERHEAD; + desc = kzalloc(CAAM_BLOB_DESC_BYTES_MAX, GFP_KERNEL | GFP_DMA); if (!desc) return -ENOMEM; @@ -145,7 +245,7 @@ int caam_process_blob(struct caam_blob_priv *priv, return ret; } -EXPORT_SYMBOL(caam_process_blob); +EXPORT_SYMBOL(caam_decap_blob); struct caam_blob_priv *caam_blob_gen_init(void) { diff --git a/include/soc/fsl/caam-blob.h b/include/soc/fsl/caam-blob.h index 937cac52f36d..de507e2a9555 100644 --- a/include/soc/fsl/caam-blob.h +++ b/include/soc/fsl/caam-blob.h @@ -1,6 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2020 Pengutronix, Ahmad Fatoum + * Copyright 2022 NXP, Pankaj Gupta */ #ifndef __CAAM_BLOB_GEN @@ -72,15 +73,8 @@ int caam_process_blob(struct caam_blob_priv *priv, * Return: %0 and sets ``info->output_len`` on success and * a negative error code otherwise. */ -static inline int caam_encap_blob(struct caam_blob_priv *priv, - struct caam_blob_info *info) -{ - if (info->output_len < info->input_len + CAAM_BLOB_OVERHEAD) - return -EINVAL; - - return caam_process_blob(priv, info, true); -} - +int caam_encap_blob(struct caam_blob_priv *priv, + struct caam_blob_info *info); /** * caam_decap_blob - decapsulate blob * @priv: instance returned by caam_blob_gen_init() @@ -90,14 +84,7 @@ static inline int caam_encap_blob(struct caam_blob_priv *priv, * Return: %0 and sets ``info->output_len`` on success and * a negative error code otherwise. */ -static inline int caam_decap_blob(struct caam_blob_priv *priv, - struct caam_blob_info *info) -{ - if (info->input_len < CAAM_BLOB_OVERHEAD || - info->output_len < info->input_len - CAAM_BLOB_OVERHEAD) - return -EINVAL; - - return caam_process_blob(priv, info, false); -} +int caam_decap_blob(struct caam_blob_priv *priv, + struct caam_blob_info *info); #endif From patchwork Thu Oct 6 13:08:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 13000194 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 31141C433F5 for ; Thu, 6 Oct 2022 12:04:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231207AbiJFMEa (ORCPT ); Thu, 6 Oct 2022 08:04:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231292AbiJFMDv (ORCPT ); Thu, 6 Oct 2022 08:03:51 -0400 Received: from EUR05-DB8-obe.outbound.protection.outlook.com (mail-db8eur05on2078.outbound.protection.outlook.com [40.107.20.78]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 015BF9E0FF; 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Thu, 6 Oct 2022 12:03:32 +0000 From: Pankaj Gupta To: jarkko@kernel.org, a.fatoum@pengutronix.de, gilad@benyossef.com, Jason@zx2c4.com, jejb@linux.ibm.com, zohar@linux.ibm.com, dhowells@redhat.com, sumit.garg@linaro.org, david@sigma-star.at, michael@walle.cc, john.ernberg@actia.se, jmorris@namei.org, serge@hallyn.com, herbert@gondor.apana.org.au, davem@davemloft.net, j.luebbe@pengutronix.de, ebiggers@kernel.org, richard@nod.at, keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, sahil.malhotra@nxp.com, kshitiz.varshney@nxp.com, horia.geanta@nxp.com, V.Sethi@nxp.com Cc: Pankaj Gupta Subject: [PATCH v0 6/8] KEYS: trusted: caam based black key Date: Thu, 6 Oct 2022 18:38:35 +0530 Message-Id: <20221006130837.17587-7-pankaj.gupta@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221006130837.17587-1-pankaj.gupta@nxp.com> References: <20221006130837.17587-1-pankaj.gupta@nxp.com> X-ClientProxiedBy: SI1PR02CA0011.apcprd02.prod.outlook.com (2603:1096:4:1f7::19) To DU2PR04MB8630.eurprd04.prod.outlook.com (2603:10a6:10:2dd::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8630:EE_|AS8PR04MB8245:EE_ X-MS-Office365-Filtering-Correlation-Id: efadc8de-e4b9-4fa1-014f-08daa792c9d6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: efadc8de-e4b9-4fa1-014f-08daa792c9d6 X-MS-Exchange-CrossTenant-AuthSource: DU2PR04MB8630.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Oct 2022 12:03:32.3072 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: D2CsDQ44cSePbeADfRPG8K2L529bny37fBaWS1VSGIwhfufc89Qv3o+/I8O0Tmql9vHNdDManv6UddQGskj/Dw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR04MB8245 Precedence: bulk List-ID: - CAAM supports two types of black keys: -- Plain key encrypted with ECB -- Plain key encrypted with CCM Note: Due to robustness, default encytption used for black key is CCM. - A black key blob is generated, and added to trusted key payload. This is done as part of sealing operation, that was triggered as a result of: -- new key generation -- load key, Signed-off-by: Pankaj Gupta --- drivers/crypto/caam/blob_gen.c | 123 +++++++++++++++++++--- drivers/crypto/caam/desc.h | 8 +- include/soc/fsl/caam-blob.h | 15 +++ security/keys/trusted-keys/trusted_caam.c | 8 ++ 4 files changed, 136 insertions(+), 18 deletions(-) diff --git a/drivers/crypto/caam/blob_gen.c b/drivers/crypto/caam/blob_gen.c index 36683ec9aee0..93e05557dcaa 100644 --- a/drivers/crypto/caam/blob_gen.c +++ b/drivers/crypto/caam/blob_gen.c @@ -8,6 +8,8 @@ #define pr_fmt(fmt) "caam blob_gen: " fmt #include +#include +#include #include #include "compat.h" @@ -32,6 +34,9 @@ struct caam_blob_priv { struct device jrdev; + /* Flags: whether generated trusted key, is ECB or CCM encrypted.*/ + uint8_t hbk_flags; + uint8_t rsv[3]; }; struct caam_blob_job_result { @@ -78,8 +83,13 @@ int caam_encap_blob(struct caam_blob_priv *priv, dma_addr_t dma_in, dma_out; int op = OP_PCLID_BLOB; size_t output_len; + dma_addr_t dma_blk; u32 *desc; int ret; + int hwbk_caam_ovhd = 0; + + if (info->output_len < info->input_len + CAAM_BLOB_OVERHEAD) + return -EINVAL; if (info->key_mod_len > CAAM_BLOB_KEYMOD_LENGTH) return -EINVAL; @@ -87,6 +97,21 @@ int caam_encap_blob(struct caam_blob_priv *priv, op |= OP_TYPE_ENCAP_PROTOCOL; output_len = info->input_len + CAAM_BLOB_OVERHEAD; + if (info->is_hw_bound == 1) { + op |= OP_PCL_BLOB_BLACK; + if (priv->hbk_flags & HWBK_FLAGS_CAAM_CCM_ALGO_MASK) { + op |= OP_PCL_BLOB_EKT; + hwbk_caam_ovhd = CCM_OVERHEAD; + } + + if ((info->input_len + hwbk_caam_ovhd) > MAX_KEY_SIZE) + return -EINVAL; + + set_hbk_info(info->hbk_info, + priv->hbk_flags, + info->input_len); + } + desc = kzalloc(CAAM_BLOB_DESC_BYTES_MAX, GFP_KERNEL | GFP_DMA); if (!desc) return -ENOMEM; @@ -99,12 +124,26 @@ int caam_encap_blob(struct caam_blob_priv *priv, goto out_free; } + if (info->is_hw_bound == 1) { + dma_blk = dma_map_single(jrdev, info->input, + info->input_len + hwbk_caam_ovhd, + DMA_FROM_DEVICE); + if (dma_mapping_error(jrdev, dma_out)) { + dev_err(jrdev, "unable to map output DMA buffer\n"); + ret = -ENOMEM; + goto out_unmap_in; + } + } + dma_out = dma_map_single(jrdev, info->output, output_len, DMA_FROM_DEVICE); if (dma_mapping_error(jrdev, dma_out)) { dev_err(jrdev, "unable to map output DMA buffer\n"); ret = -ENOMEM; - goto out_unmap_in; + if (info->is_hw_bound == 1) + goto out_unmap_blk; + else + goto out_unmap_in; } /* @@ -116,15 +155,40 @@ int caam_encap_blob(struct caam_blob_priv *priv, */ init_job_desc(desc, 0); + + if (info->is_hw_bound == 1) { + /*!1. key command used to load class 1 key register + * from input plain key. + */ + append_key(desc, dma_in, info->input_len, + CLASS_1 | KEY_DEST_CLASS_REG); + + /*!2. Fifostore to store black key from class 1 key register. */ + append_fifo_store(desc, dma_blk, info->input_len, + LDST_CLASS_1_CCB | FIFOST_TYPE_KEY_CCM_JKEK); + + append_jump(desc, JUMP_COND_NOP | 1); + } + /*!3. Load class 2 key with key modifier. */ append_key_as_imm(desc, info->key_mod, info->key_mod_len, info->key_mod_len, CLASS_2 | KEY_DEST_CLASS_REG); - append_seq_in_ptr_intlen(desc, dma_in, info->input_len, 0); + + /*!4. SEQ IN PTR Command. */ + if (info->is_hw_bound == 1) { + append_seq_in_ptr_intlen(desc, dma_blk, info->input_len, 0); + } else { + append_seq_in_ptr_intlen(desc, dma_in, info->input_len, 0); + } + + /*!5. SEQ OUT PTR Command. */ append_seq_out_ptr_intlen(desc, dma_out, output_len, 0); + + /*!6. BlackBlob encapsulation PROTOCOL Command. */ append_operation(desc, op); print_hex_dump_debug("data@"__stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 1, info->input, - info->input_len, false); + info->input_len + hwbk_caam_ovhd, false); print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 1, desc, desc_bytes(desc), false); @@ -140,11 +204,15 @@ int caam_encap_blob(struct caam_blob_priv *priv, DUMP_PREFIX_ADDRESS, 16, 1, info->output, output_len, false); } - - if (ret == 0) + if (ret == 0) { + info->input_len += hwbk_caam_ovhd; info->output_len = output_len; - + } dma_unmap_single(jrdev, dma_out, output_len, DMA_FROM_DEVICE); +out_unmap_blk: + if (info->is_hw_bound == 1) { + dma_unmap_single(jrdev, dma_blk, info->input_len, DMA_TO_DEVICE); + } out_unmap_in: dma_unmap_single(jrdev, dma_in, info->input_len, DMA_TO_DEVICE); out_free: @@ -170,15 +238,35 @@ int caam_decap_blob(struct caam_blob_priv *priv, struct device *jrdev = &priv->jrdev; dma_addr_t dma_in, dma_out; int op = OP_PCLID_BLOB; - size_t output_len; u32 *desc; int ret; + int hwbk_caam_ovhd = 0; + + if (info->input_len < CAAM_BLOB_OVERHEAD) + return -EINVAL; if (info->key_mod_len > CAAM_BLOB_KEYMOD_LENGTH) return -EINVAL; op |= OP_TYPE_DECAP_PROTOCOL; - output_len = info->input_len - CAAM_BLOB_OVERHEAD; + info->output_len = info->input_len - CAAM_BLOB_OVERHEAD; + + if (info->is_hw_bound == 1) { + op |= OP_PCL_BLOB_BLACK; + if (priv->hbk_flags & HWBK_FLAGS_CAAM_CCM_ALGO_MASK) { + op |= OP_PCL_BLOB_EKT; + hwbk_caam_ovhd = CCM_OVERHEAD; + } + + if ((info->output_len + hwbk_caam_ovhd) > MAX_KEY_SIZE) + return -EINVAL; + + set_hbk_info(info->hbk_info, + priv->hbk_flags, + info->output_len); + + info->output_len += hwbk_caam_ovhd; + } desc = kzalloc(CAAM_BLOB_DESC_BYTES_MAX, GFP_KERNEL | GFP_DMA); if (!desc) @@ -192,7 +280,7 @@ int caam_decap_blob(struct caam_blob_priv *priv, goto out_free; } - dma_out = dma_map_single(jrdev, info->output, output_len, + dma_out = dma_map_single(jrdev, info->output, info->output_len, DMA_FROM_DEVICE); if (dma_mapping_error(jrdev, dma_out)) { dev_err(jrdev, "unable to map output DMA buffer\n"); @@ -211,8 +299,8 @@ int caam_decap_blob(struct caam_blob_priv *priv, init_job_desc(desc, 0); append_key_as_imm(desc, info->key_mod, info->key_mod_len, info->key_mod_len, CLASS_2 | KEY_DEST_CLASS_REG); - append_seq_in_ptr_intlen(desc, dma_in, info->input_len, 0); - append_seq_out_ptr_intlen(desc, dma_out, output_len, 0); + append_seq_in_ptr(desc, dma_in, info->input_len, 0); + append_seq_out_ptr(desc, dma_out, info->output_len, 0); append_operation(desc, op); print_hex_dump_debug("data@"__stringify(__LINE__)": ", @@ -231,13 +319,10 @@ int caam_decap_blob(struct caam_blob_priv *priv, ret = testres.err; print_hex_dump_debug("output@"__stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 1, info->output, - output_len, false); + info->output_len, false); } - if (ret == 0) - info->output_len = output_len; - - dma_unmap_single(jrdev, dma_out, output_len, DMA_FROM_DEVICE); + dma_unmap_single(jrdev, dma_out, info->output_len, DMA_FROM_DEVICE); out_unmap_in: dma_unmap_single(jrdev, dma_in, info->input_len, DMA_TO_DEVICE); out_free: @@ -251,6 +336,7 @@ struct caam_blob_priv *caam_blob_gen_init(void) { struct caam_drv_private *ctrlpriv; struct device *jrdev; + struct caam_blob_priv *blob_priv; /* * caam_blob_gen_init() may expectedly fail with -ENODEV, e.g. when @@ -271,7 +357,10 @@ struct caam_blob_priv *caam_blob_gen_init(void) return ERR_PTR(-ENODEV); } - return container_of(jrdev, struct caam_blob_priv, jrdev); + blob_priv = container_of(jrdev, struct caam_blob_priv, jrdev); + blob_priv->hbk_flags = HWBK_FLAGS_CAAM_CCM_ALGO_MASK; + + return blob_priv; } EXPORT_SYMBOL(caam_blob_gen_init); diff --git a/drivers/crypto/caam/desc.h b/drivers/crypto/caam/desc.h index e13470901586..41b2d0226bdf 100644 --- a/drivers/crypto/caam/desc.h +++ b/drivers/crypto/caam/desc.h @@ -4,7 +4,7 @@ * Definitions to support CAAM descriptor instruction generation * * Copyright 2008-2011 Freescale Semiconductor, Inc. - * Copyright 2018 NXP + * Copyright 2018-2022 NXP */ #ifndef DESC_H @@ -403,6 +403,7 @@ #define FIFOST_TYPE_PKHA_N (0x08 << FIFOST_TYPE_SHIFT) #define FIFOST_TYPE_PKHA_A (0x0c << FIFOST_TYPE_SHIFT) #define FIFOST_TYPE_PKHA_B (0x0d << FIFOST_TYPE_SHIFT) +#define FIFOST_TYPE_KEY_CCM_JKEK (0x14 << FIFOST_TYPE_SHIFT) #define FIFOST_TYPE_AF_SBOX_JKEK (0x20 << FIFOST_TYPE_SHIFT) #define FIFOST_TYPE_AF_SBOX_TKEK (0x21 << FIFOST_TYPE_SHIFT) #define FIFOST_TYPE_PKHA_E_JKEK (0x22 << FIFOST_TYPE_SHIFT) @@ -1001,6 +1002,11 @@ #define OP_PCL_TLS12_AES_256_CBC_SHA384 0xff63 #define OP_PCL_TLS12_AES_256_CBC_SHA512 0xff65 +/* Blob protocol protinfo bits */ + +#define OP_PCL_BLOB_BLACK 0x0004 +#define OP_PCL_BLOB_EKT 0x0100 + /* For DTLS - OP_PCLID_DTLS */ #define OP_PCL_DTLS_AES_128_CBC_SHA 0x002f diff --git a/include/soc/fsl/caam-blob.h b/include/soc/fsl/caam-blob.h index de507e2a9555..8d9f6b209418 100644 --- a/include/soc/fsl/caam-blob.h +++ b/include/soc/fsl/caam-blob.h @@ -9,7 +9,19 @@ #include #include +#include +#define HWBK_FLAGS_CAAM_CCM_ALGO_MASK 0x01 + +/* + * CCM-Black Key will always be at least 12 bytes longer, + * since the encapsulation uses a 6-byte nonce and adds + * a 6-byte ICV. But first, the key is padded as necessary so + * that CCM-Black Key is a multiple of 8 bytes long. + */ +#define NONCE_SIZE 6 +#define ICV_SIZE 6 +#define CCM_OVERHEAD (NONCE_SIZE + ICV_SIZE) #define CAAM_BLOB_KEYMOD_LENGTH 16 #define CAAM_BLOB_OVERHEAD (32 + 16) #define CAAM_BLOB_MAX_LEN 4096 @@ -35,6 +47,9 @@ struct caam_blob_info { const void *key_mod; size_t key_mod_len; + + const char is_hw_bound; + struct hw_bound_key_info *hbk_info; }; /** diff --git a/security/keys/trusted-keys/trusted_caam.c b/security/keys/trusted-keys/trusted_caam.c index e3415c520c0a..60e50bed7014 100644 --- a/security/keys/trusted-keys/trusted_caam.c +++ b/security/keys/trusted-keys/trusted_caam.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2021 Pengutronix, Ahmad Fatoum + * Copyright 2022 NXP, Pankaj Gupta */ #include @@ -23,6 +24,7 @@ static int trusted_caam_seal(struct trusted_key_payload *p, char *datablob) .input = p->key, .input_len = p->key_len, .output = p->blob, .output_len = MAX_BLOB_SIZE, .key_mod = KEYMOD, .key_mod_len = sizeof(KEYMOD) - 1, + .is_hw_bound = p->is_hw_bound, .hbk_info = &p->hbk_info, }; ret = caam_encap_blob(blobifier, &info); @@ -30,6 +32,10 @@ static int trusted_caam_seal(struct trusted_key_payload *p, char *datablob) return ret; p->blob_len = info.output_len; + + if (p->is_hw_bound) + p->key_len = info.input_len; + return 0; } @@ -40,6 +46,7 @@ static int trusted_caam_unseal(struct trusted_key_payload *p, char *datablob) .input = p->blob, .input_len = p->blob_len, .output = p->key, .output_len = MAX_KEY_SIZE, .key_mod = KEYMOD, .key_mod_len = sizeof(KEYMOD) - 1, + .is_hw_bound = p->is_hw_bound, .hbk_info = &p->hbk_info, }; ret = caam_decap_blob(blobifier, &info); @@ -47,6 +54,7 @@ static int trusted_caam_unseal(struct trusted_key_payload *p, char *datablob) return ret; p->key_len = info.output_len; + return 0; } From patchwork Thu Oct 6 13:08:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 13000195 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 25B37C433F5 for ; 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Signed-off-by: Pankaj Gupta --- drivers/crypto/caam/caamalg.c | 43 ++++++++++++++++++++++++++++-- drivers/crypto/caam/caamalg_desc.c | 8 +++--- drivers/crypto/caam/desc_constr.h | 6 ++++- 3 files changed, 51 insertions(+), 6 deletions(-) diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index d3d8bb0a6990..94e971297a9d 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -3,7 +3,7 @@ * caam - Freescale FSL CAAM support for crypto API * * Copyright 2008-2011 Freescale Semiconductor, Inc. - * Copyright 2016-2019 NXP + * Copyright 2016-2022 NXP * * Based on talitos crypto API driver. * @@ -59,6 +59,8 @@ #include #include #include +#include +#include /* * crypto alg @@ -741,9 +743,25 @@ static int skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key, print_hex_dump_debug("key in @"__stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1); + /* Here keylen is actual key length */ ctx->cdata.keylen = keylen; ctx->cdata.key_virt = key; ctx->cdata.key_inline = true; + /* Here real key len is plain key length */ + ctx->cdata.key_real_len = keylen; + ctx->cdata.key_cmd_opt = 0; + + /* check if the key is HBK */ + if (skcipher->base.is_hbk) { + ctx->cdata.key_cmd_opt |= KEY_ENC; + + /* check if the HBK is CCM key */ + if (skcipher->base.hbk_info.flags + & HWBK_FLAGS_CAAM_CCM_ALGO_MASK) + ctx->cdata.key_cmd_opt |= KEY_EKT; + + ctx->cdata.key_real_len = skcipher->base.hbk_info.key_sz; + } /* skcipher_encrypt shared descriptor */ desc = ctx->sh_desc_enc; @@ -762,12 +780,33 @@ static int skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key, return 0; } +static int caam_hbk_check_keylen(struct hw_bound_key_info *hbk_info, + unsigned int keylen) +{ + u32 overhead = 0; + + if (hbk_info->flags & HWBK_FLAGS_CAAM_CCM_ALGO_MASK) + overhead += CCM_OVERHEAD; + + /* deduce the hb_key_len, by adding plain-key len + * and encryption overhead. + */ + if (keylen != (hbk_info->key_sz + overhead)) + return -EINVAL; + + return aes_check_keylen(hbk_info->key_sz); +} + static int aes_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key, unsigned int keylen) { int err; - err = aes_check_keylen(keylen); + if (skcipher->base.is_hbk) + err = caam_hbk_check_keylen(&(skcipher->base.hbk_info), keylen); + else + err = aes_check_keylen(keylen); + if (err) return err; diff --git a/drivers/crypto/caam/caamalg_desc.c b/drivers/crypto/caam/caamalg_desc.c index 7571e1ac913b..784acae8c9b7 100644 --- a/drivers/crypto/caam/caamalg_desc.c +++ b/drivers/crypto/caam/caamalg_desc.c @@ -2,7 +2,7 @@ /* * Shared descriptors for aead, skcipher algorithms * - * Copyright 2016-2019 NXP + * Copyright 2016-2022 NXP */ #include "compat.h" @@ -1391,7 +1391,8 @@ void cnstr_shdsc_skcipher_encap(u32 * const desc, struct alginfo *cdata, /* Load class1 key only */ append_key_as_imm(desc, cdata->key_virt, cdata->keylen, - cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + cdata->key_real_len, CLASS_1 | KEY_DEST_CLASS_REG + | cdata->key_cmd_opt); /* Load nonce into CONTEXT1 reg */ if (is_rfc3686) { @@ -1466,7 +1467,8 @@ void cnstr_shdsc_skcipher_decap(u32 * const desc, struct alginfo *cdata, /* Load class1 key only */ append_key_as_imm(desc, cdata->key_virt, cdata->keylen, - cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + cdata->key_real_len, CLASS_1 | KEY_DEST_CLASS_REG + | cdata->key_cmd_opt); /* Load nonce into CONTEXT1 reg */ if (is_rfc3686) { diff --git a/drivers/crypto/caam/desc_constr.h b/drivers/crypto/caam/desc_constr.h index 62ce6421bb3f..d652bdbf3f91 100644 --- a/drivers/crypto/caam/desc_constr.h +++ b/drivers/crypto/caam/desc_constr.h @@ -3,7 +3,7 @@ * caam descriptor construction helper functions * * Copyright 2008-2012 Freescale Semiconductor, Inc. - * Copyright 2019 NXP + * Copyright 2019-2022 NXP */ #ifndef DESC_CONSTR_H @@ -500,6 +500,8 @@ do { \ * @key_virt: virtual address where algorithm key resides * @key_inline: true - key can be inlined in the descriptor; false - key is * referenced by the descriptor + * @key_real_len: size of the key to be loaded by the CAAM + * @key_cmd_opt: optional parameters for KEY command */ struct alginfo { u32 algtype; @@ -508,6 +510,8 @@ struct alginfo { dma_addr_t key_dma; const void *key_virt; bool key_inline; + u32 key_real_len; + u32 key_cmd_opt; }; 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Thu, 6 Oct 2022 12:03:47 +0000 From: Pankaj Gupta To: jarkko@kernel.org, a.fatoum@pengutronix.de, gilad@benyossef.com, Jason@zx2c4.com, jejb@linux.ibm.com, zohar@linux.ibm.com, dhowells@redhat.com, sumit.garg@linaro.org, david@sigma-star.at, michael@walle.cc, john.ernberg@actia.se, jmorris@namei.org, serge@hallyn.com, herbert@gondor.apana.org.au, davem@davemloft.net, j.luebbe@pengutronix.de, ebiggers@kernel.org, richard@nod.at, keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, sahil.malhotra@nxp.com, kshitiz.varshney@nxp.com, horia.geanta@nxp.com, V.Sethi@nxp.com Cc: Pankaj Gupta Subject: [PATCH v0 8/8] dm-crypt: consumer-app setting the flag-is_hbk Date: Thu, 6 Oct 2022 18:38:37 +0530 Message-Id: <20221006130837.17587-9-pankaj.gupta@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221006130837.17587-1-pankaj.gupta@nxp.com> References: <20221006130837.17587-1-pankaj.gupta@nxp.com> X-ClientProxiedBy: SI1PR02CA0011.apcprd02.prod.outlook.com (2603:1096:4:1f7::19) To DU2PR04MB8630.eurprd04.prod.outlook.com (2603:10a6:10:2dd::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8630:EE_|AS8PR04MB8245:EE_ X-MS-Office365-Filtering-Correlation-Id: 85020fc1-a3f5-41d3-4e90-08daa792d30e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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-- tfm hbk_info, if cc->is_hbk, is non-zero. Note: HBK Supported for symmetric-key ciphers only. Signed-off-by: Pankaj Gupta --- drivers/md/dm-crypt.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 159c6806c19b..d28c4af2904e 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -221,6 +221,8 @@ struct crypt_config { struct mutex bio_alloc_lock; u8 *authenc_key; /* space for keys in authenc() format (if used) */ + unsigned int is_hbk; + struct hw_bound_key_info hbk_info; u8 key[]; }; @@ -2397,10 +2399,16 @@ static int crypt_setkey(struct crypt_config *cc) r = crypto_aead_setkey(cc->cipher_tfm.tfms_aead[i], cc->key + (i * subkey_size), subkey_size); - else + else { + cc->cipher_tfm.tfms[i]->base.is_hbk = cc->is_hbk; + if (cc->is_hbk) + memcpy(&(cc->cipher_tfm.tfms[i]->base.hbk_info), + &(cc->hbk_info), + sizeof(struct hw_bound_key_info)); r = crypto_skcipher_setkey(cc->cipher_tfm.tfms[i], cc->key + (i * subkey_size), subkey_size); + } if (r) err = r; } @@ -2461,9 +2469,11 @@ static int set_key_trusted(struct crypt_config *cc, struct key *key) if (!tkp) return -EKEYREVOKED; + cc->is_hbk = tkp->is_hw_bound; if (cc->key_size != tkp->key_len) return -EINVAL; + memcpy(&(cc->hbk_info), &(tkp->hbk_info), sizeof(struct hw_bound_key_info)); memcpy(cc->key, tkp->key, cc->key_size); return 0;