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Tue, 6 Sep 2022 05:50:25 +0000 From: Pankaj Gupta To: jarkko@kernel.org, a.fatoum@pengutronix.de, 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, pankaj.gupta@nxp.com, V.Sethi@nxp.com Subject: [RFC PATCH HBK: 1/8] keys-trusted: new cmd line option added Date: Tue, 6 Sep 2022 12:21:50 +0530 Message-Id: <20220906065157.10662-2-pankaj.gupta@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220906065157.10662-1-pankaj.gupta@nxp.com> References: <20220906065157.10662-1-pankaj.gupta@nxp.com> X-ClientProxiedBy: SI2PR01CA0001.apcprd01.prod.exchangelabs.com (2603:1096:4:191::13) To DU2PR04MB8630.eurprd04.prod.outlook.com (2603:10a6:10:2dd::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: eee0fbbd-a017-4702-9849-08da8fcbafac X-MS-TrafficTypeDiagnostic: AM0PR04MB6657:EE_ 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/keys/trusted-type.h | 2 ++ security/keys/trusted-keys/trusted_caam.c | 6 ++++++ security/keys/trusted-keys/trusted_core.c | 14 ++++++++++++++ 3 files changed, 22 insertions(+) diff --git a/include/keys/trusted-type.h b/include/keys/trusted-type.h index 4eb64548a74f..064266b936c7 100644 --- a/include/keys/trusted-type.h +++ b/include/keys/trusted-type.h @@ -22,6 +22,7 @@ #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 +30,7 @@ struct trusted_key_payload { unsigned int blob_len; unsigned char migratable; unsigned char old_format; + unsigned char is_hw_bound; unsigned char key[MAX_KEY_SIZE + 1]; unsigned char blob[MAX_BLOB_SIZE]; }; diff --git a/security/keys/trusted-keys/trusted_caam.c b/security/keys/trusted-keys/trusted_caam.c index e3415c520c0a..fceb9a271c4d 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, }; ret = caam_encap_blob(blobifier, &info); @@ -30,6 +32,9 @@ 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 +45,7 @@ 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, }; ret = caam_decap_blob(blobifier, &info); diff --git a/security/keys/trusted-keys/trusted_core.c b/security/keys/trusted-keys/trusted_core.c index c6fc50d67214..7f7cc2551b92 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 +96,12 @@ 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; + /* second argument is to determine if tied to HW */ + c = strsep(datablob, " \t"); + if (c) { + if (strcmp(c, "hw") == 0) + p->is_hw_bound = HW_BOUND_KEY; + } ret = Opt_new; break; case Opt_load: @@ -107,6 +115,12 @@ static int datablob_parse(char **datablob, struct trusted_key_payload *p) ret = hex2bin(p->blob, c, p->blob_len); if (ret < 0) return -EINVAL; + /* second argument is to determine if tied to HW */ + c = strsep(datablob, " \t"); + if (c) { + if (strcmp(c, "hw") == 0) + p->is_hw_bound = HW_BOUND_KEY; + } ret = Opt_load; break; case Opt_update: From patchwork Tue Sep 6 06:51:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 605397 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 7EEB4C38145 for ; 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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 | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/crypto.h b/include/linux/crypto.h index 2324ab6f1846..b4fa83ca87bd 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -639,6 +639,8 @@ struct crypto_tfm { u32 crt_flags; + unsigned int is_hbk; + int node; void (*exit)(struct crypto_tfm *tfm); From patchwork Tue Sep 6 06:51:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 603135 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 92E2BC6FA91 for ; Tue, 6 Sep 2022 05:50:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232854AbiIFFur (ORCPT ); Tue, 6 Sep 2022 01:50:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52196 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232503AbiIFFun (ORCPT ); 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If yes, - skipping the key-length validation, against the valid 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 Tue Sep 6 06:51:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 605396 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 EE039ECAAA1 for ; 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Signed-off-by: Pankaj Gupta --- drivers/crypto/caam/blob_gen.c | 122 +++++++++++++++++++++++++++++---- include/soc/fsl/caam-blob.h | 28 +++----- 2 files changed, 118 insertions(+), 32 deletions(-) diff --git a/drivers/crypto/caam/blob_gen.c b/drivers/crypto/caam/blob_gen.c index 6345c7269eb0..c128a83cc8dd 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 @@ -29,10 +30,6 @@ /* Command describing the operation to perform */ \ CAAM_CMD_SZ) -struct caam_blob_priv { - struct device jrdev; -}; - struct caam_blob_job_result { int err; struct completion completion; @@ -58,8 +55,19 @@ 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 +80,102 @@ 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 +241,7 @@ 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..632944df29f7 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 @@ -13,7 +14,10 @@ #define CAAM_BLOB_OVERHEAD (32 + 16) #define CAAM_BLOB_MAX_LEN 4096 -struct caam_blob_priv; +struct caam_blob_priv { + struct device jrdev; +}; + /** * struct caam_blob_info - information for CAAM blobbing @@ -72,15 +76,8 @@ 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 +87,7 @@ 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 Tue Sep 6 06:51:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 603134 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 04333C6FA83 for ; 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Signed-off-by: Pankaj Gupta --- drivers/crypto/caam/blob_gen.c | 8 ++++---- drivers/crypto/caam/intern.h | 6 +++++- include/soc/fsl/caam-blob.h | 2 +- 3 files changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/crypto/caam/blob_gen.c b/drivers/crypto/caam/blob_gen.c index c128a83cc8dd..5164e62f9596 100644 --- a/drivers/crypto/caam/blob_gen.c +++ b/drivers/crypto/caam/blob_gen.c @@ -70,7 +70,7 @@ 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; + struct device *jrdev = priv->jrdev; dma_addr_t dma_in, dma_out; int op = OP_PCLID_BLOB; size_t output_len; @@ -163,7 +163,7 @@ 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; + struct device *jrdev = priv->jrdev; dma_addr_t dma_in, dma_out; int op = OP_PCLID_BLOB; size_t output_len; @@ -267,12 +267,12 @@ struct caam_blob_priv *caam_blob_gen_init(void) return ERR_PTR(-ENODEV); } - return container_of(jrdev, struct caam_blob_priv, jrdev); + return &ctrlpriv->blob_priv; } EXPORT_SYMBOL(caam_blob_gen_init); void caam_blob_gen_exit(struct caam_blob_priv *priv) { - caam_jr_free(&priv->jrdev); + caam_jr_free(priv->jrdev); } EXPORT_SYMBOL(caam_blob_gen_exit); diff --git a/drivers/crypto/caam/intern.h b/drivers/crypto/caam/intern.h index 572cf66c887a..2fb7df3ffda5 100644 --- a/drivers/crypto/caam/intern.h +++ b/drivers/crypto/caam/intern.h @@ -4,7 +4,7 @@ * Private/internal definitions between modules * * Copyright 2008-2011 Freescale Semiconductor, Inc. - * Copyright 2019 NXP + * Copyright 2019-2022 NXP */ #ifndef INTERN_H @@ -12,6 +12,7 @@ #include "ctrl.h" #include +#include /* Currently comes from Kconfig param as a ^2 (driver-required) */ #define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE) @@ -114,6 +115,9 @@ struct caam_drv_private { struct dentry *ctl; /* controller dir */ struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap; #endif +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_BLOB_GEN + struct caam_blob_priv blob_priv; 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DIR:OUT; SFP:1101; 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: 10c417ca-1789-49a2-389d-08da8fcbc5f5 X-MS-Exchange-CrossTenant-AuthSource: DU2PR04MB8630.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Sep 2022 05:50:59.0536 (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: MP3LuObwiPCCQbZZWPhKheUT7VsMhqvyT3KAz99lnOwPjTvqJsdvTcQFxZswq+H/OH+6wcelJ3BS1ulVkifAPw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6657 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org - 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 | 132 +++++++++++++++++++++++++++++---- drivers/crypto/caam/desc.h | 8 +- include/soc/fsl/caam-blob.h | 16 ++++ 3 files changed, 140 insertions(+), 16 deletions(-) diff --git a/drivers/crypto/caam/blob_gen.c b/drivers/crypto/caam/blob_gen.c index 5164e62f9596..2354e3c6fc61 100644 --- a/drivers/crypto/caam/blob_gen.c +++ b/drivers/crypto/caam/blob_gen.c @@ -8,6 +8,7 @@ #define pr_fmt(fmt) "caam blob_gen: " fmt #include +#include #include #include "compat.h" @@ -74,8 +75,16 @@ 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; + u8 *input = info->input; + u8 *blk_out; + size_t input_len = info->input_len; 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; @@ -83,11 +92,33 @@ 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 ((input_len + hwbk_caam_ovhd) > MAX_KEY_SIZE) + return -EINVAL; + + /* create copy of input buffer */ + input = kzalloc(info->input_len, GFP_KERNEL | GFP_DMA); + if (!input) + return -ENOMEM; + memcpy(input, info->input, info->input_len); + + /* create hw bound key on input buffer reference */ + blk_out = info->input; + + info->input_len = input_len + hwbk_caam_ovhd; + } + 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_in = dma_map_single(jrdev, input, input_len, DMA_TO_DEVICE); if (dma_mapping_error(jrdev, dma_in)) { dev_err(jrdev, "unable to map input DMA buffer\n"); @@ -95,12 +126,26 @@ int caam_encap_blob(struct caam_blob_priv *priv, goto out_free; } + if (info->is_hw_bound == 1) { + dma_blk = dma_map_single(jrdev, blk_out, + 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; } /* @@ -112,15 +157,40 @@ 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, 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, 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, input_len, 0); + } else { + append_seq_in_ptr_intlen(desc, dma_in, 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); + DUMP_PREFIX_ADDRESS, 16, 1, input, + input_len + hwbk_caam_ovhd, false); print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 1, desc, desc_bytes(desc), false); @@ -136,15 +206,19 @@ 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->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: kfree(desc); + kfree(input); return ret; } @@ -168,13 +242,41 @@ int caam_decap_blob(struct caam_blob_priv *priv, int op = OP_PCLID_BLOB; size_t output_len; u32 *desc; + u8 *output = info->output; 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 = output_len; + + 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 ((output_len + hwbk_caam_ovhd) > MAX_KEY_SIZE) + return -EINVAL; + + /* In case of HW Bound Key, lengths have different purpose: + * - output_len = HW encrypted key length. + * - info->output_len = Length of HW Bound Key Payload + * (Payload = Header + outlen) + */ + info->output_len = output_len + hwbk_caam_ovhd; + + output_len += hwbk_caam_ovhd; + + output = info->output; + } desc = kzalloc(CAAM_BLOB_DESC_BYTES_MAX, GFP_KERNEL | GFP_DMA); if (!desc) @@ -188,7 +290,7 @@ 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, output, output_len, DMA_FROM_DEVICE); if (dma_mapping_error(jrdev, dma_out)) { dev_err(jrdev, "unable to map output DMA buffer\n"); @@ -207,8 +309,8 @@ 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, output_len, 0); append_operation(desc, op); print_hex_dump_debug("data@"__stringify(__LINE__)": ", @@ -226,13 +328,10 @@ int caam_decap_blob(struct caam_blob_priv *priv, wait_for_completion(&testres.completion); ret = testres.err; print_hex_dump_debug("output@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 1, info->output, + DUMP_PREFIX_ADDRESS, 16, 1, 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); @@ -267,6 +366,9 @@ struct caam_blob_priv *caam_blob_gen_init(void) return ERR_PTR(-ENODEV); } + ctrlpriv->blob_priv.hbk_flags = HWBK_FLAGS_CAAM_CCM_ALGO_MASK; + ctrlpriv->blob_priv.jrdev = jrdev; + return &ctrlpriv->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 380b0bcb79dc..ae2c2a6c8c23 100644 --- a/include/soc/fsl/caam-blob.h +++ b/include/soc/fsl/caam-blob.h @@ -10,12 +10,26 @@ #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 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]; }; @@ -38,6 +52,8 @@ struct caam_blob_info { const void *key_mod; size_t key_mod_len; + + const char is_hw_bound; }; /** From patchwork Tue Sep 6 06:51:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 603133 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 AE2DDC6FA83 for ; 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Signed-off-by: Pankaj Gupta --- drivers/crypto/caam/caamalg.c | 37 ++++++++++++++++++++++++++++-- drivers/crypto/caam/caamalg_desc.c | 8 ++++--- drivers/crypto/caam/desc_constr.h | 6 ++++- 3 files changed, 45 insertions(+), 6 deletions(-) diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index d3d8bb0a6990..2c96aecab627 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 +59,7 @@ #include #include #include +#include /* * crypto alg @@ -734,6 +735,7 @@ static int skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key, container_of(crypto_skcipher_alg(skcipher), typeof(*alg), skcipher); struct device *jrdev = ctx->jrdev; + struct caam_drv_private *ctrlpriv; unsigned int ivsize = crypto_skcipher_ivsize(skcipher); u32 *desc; const bool is_rfc3686 = alg->caam.rfc3686; @@ -741,9 +743,26 @@ 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) { + ctrlpriv = dev_get_drvdata(jrdev->parent); + ctx->cdata.key_cmd_opt |= KEY_ENC; + + /* check if the HBK is CCM key */ + if (ctrlpriv->blob_priv.hbk_flags + & HWBK_FLAGS_CAAM_CCM_ALGO_MASK) { + ctx->cdata.key_cmd_opt |= KEY_EKT; + ctx->cdata.key_real_len = keylen - CCM_OVERHEAD; + } + } /* skcipher_encrypt shared descriptor */ desc = ctx->sh_desc_enc; @@ -766,8 +785,22 @@ static int aes_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key, unsigned int keylen) { int err; + int overhead = 0; + struct caam_ctx *ctx; + struct device *jrdev; + struct caam_drv_private *ctrlpriv; + + if (skcipher->base.is_hbk) { + ctx = crypto_skcipher_ctx(skcipher); + jrdev = ctx->jrdev; + ctrlpriv = dev_get_drvdata(jrdev->parent); + if (ctrlpriv->blob_priv.hbk_flags + & HWBK_FLAGS_CAAM_CCM_ALGO_MASK) + overhead += CCM_OVERHEAD; + } + + err = aes_check_keylen((keylen - overhead)); - 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; }; /** From patchwork Tue Sep 6 06:51:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Gupta X-Patchwork-Id: 605394 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 17832C6FA89 for ; Tue, 6 Sep 2022 05:52:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238469AbiIFFwl (ORCPT ); Tue, 6 Sep 2022 01:52:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232503AbiIFFvx (ORCPT ); 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-- Note: Supported for symmetric-key ciphers only. Signed-off-by: Pankaj Gupta --- drivers/md/dm-crypt.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 159c6806c19b..12b400e06cbf 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -221,6 +221,7 @@ struct crypt_config { struct mutex bio_alloc_lock; u8 *authenc_key; /* space for keys in authenc() format (if used) */ + unsigned int is_hbk; u8 key[]; }; @@ -2397,10 +2398,12 @@ 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; r = crypto_skcipher_setkey(cc->cipher_tfm.tfms[i], cc->key + (i * subkey_size), subkey_size); + } if (r) err = r; } @@ -2461,6 +2464,7 @@ 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;