From patchwork Sun Feb 7 18:26:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jorge Ramirez-Ortiz, Foundries" X-Patchwork-Id: 1437236 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=foundries.io header.i=@foundries.io header.a=rsa-sha256 header.s=google header.b=DE1UxF8c; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4DYd0l5Vdvz9sVJ for ; Mon, 8 Feb 2021 05:27:03 +1100 (AEDT) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 1EB7582791; Sun, 7 Feb 2021 19:26:53 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=foundries.io Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=foundries.io header.i=@foundries.io header.b="DE1UxF8c"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 70086826F6; Sun, 7 Feb 2021 19:26:47 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com [IPv6:2a00:1450:4864:20::435]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id DCE0D826F6 for ; Sun, 7 Feb 2021 19:26:43 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=foundries.io Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=jorge@foundries.io Received: by mail-wr1-x435.google.com with SMTP id c12so14589319wrc.7 for ; Sun, 07 Feb 2021 10:26:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foundries.io; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=0vUaZEByBxwNbTiKXtm4FqQVDvKyfcDOoqR5sJkil9E=; b=DE1UxF8ci7LX26/YJwAGYd2nqn15GRkbzR53EmSrrT2zdsXSyS9oScjjnn8j4ATUCQ 03obQqmH12D869bE6+C6WD7qQ15ez6XNRwlKThw6ij9llCmyZW0uDOPP3fXtewrZDMcS cta8aUAdEbfUwrqeWJ7W4Ph2/pVVlFF/n7djwQiJjcr0ZwtzlaELFnd9CqZKZ+fdR4Q5 +GNA/e5rBWZk5V7LbhoutnHQ7qanTEg2mx9Nkmb7GgRAwGsnFwlPYYQwy/ba/1DYzNLs jyYPMpwPzIbzYmhFuY3CiD69VzOsE3JvL2xdsJvluAO2Kc08z76vlz6/fdrPzORQoEQ6 L1Ow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=0vUaZEByBxwNbTiKXtm4FqQVDvKyfcDOoqR5sJkil9E=; b=Bk8TFV2JytYjZwoGEjnx/w7Fj9Ykop3Tcnchr9ihXYUAkH9iuCLQCTFQQcC5tVNr4j SqMn6CGB9RH9jmH5QLtKcrKIs8zSP0Dbx6Um7GHbpT034ZtIu9RL1i3ZH8RIEU4T9BDP 1EzYLd1Fr+03tq6gBFXbywN8UyDG6qjYXjwPm9yjdjFUwx3+DojkboPHtaGrWyuU1Xf3 pplNOoiXnV1t+KBs9MiPUfl+Cp6uPiNvrt/TFZuQocYTlgEhjrnjHiyCX0J5PAu3dtWj yUwx8GQGWcxfW/MQMUE6UnjUvrl+3+yGMI9jsdx2JGDHFIJj1U8FSjyjuDqnHTEM9npH pj8g== X-Gm-Message-State: AOAM531HjMtovbhwSPx6BNomdkmi1e2uQDKqjsprkEr2JOr6CoQHeD3Y 0DD8nmWIu4vL4/y/GziknUlQ2U1nA7XyyQ== X-Google-Smtp-Source: ABdhPJyVZxlXdDlLvRDTMtJJDvTu7n/IJVWdvnakq83vGLJCuame4Evv5G5C4qf4Km4Zn2AxjBLEXQ== X-Received: by 2002:a05:6000:104f:: with SMTP id c15mr16085505wrx.239.1612722403545; Sun, 07 Feb 2021 10:26:43 -0800 (PST) Received: from localhost.localdomain (182.red-79-146-86.dynamicip.rima-tde.net. [79.146.86.182]) by smtp.gmail.com with ESMTPSA id i3sm5173360wrr.19.2021.02.07.10.26.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 07 Feb 2021 10:26:43 -0800 (PST) From: Jorge Ramirez-Ortiz To: jorge@foundries.io, sjg@chromium.org, jens.wiklander@linaro.org Cc: igor.opaniuk@foundries.io, u-boot@lists.denx.de Subject: [PATCHv3 1/4] common: SCP03 control (enable and provision of keys) Date: Sun, 7 Feb 2021 19:26:29 +0100 Message-Id: <20210207182632.24252-2-jorge@foundries.io> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210207182632.24252-1-jorge@foundries.io> References: <20210207182632.24252-1-jorge@foundries.io> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.3 at phobos.denx.de X-Virus-Status: Clean This Trusted Application allows enabling SCP03 as well as provisioning the keys on TEE controlled secure element (ie, NXP SE050). All the information flowing on buses (ie I2C) between the processor and the secure element must be encrypted. Secure elements are pre-provisioned with a set of keys known to the user so that the secure channel protocol (encryption) can be enforced on the first boot. This situation is however unsafe since the keys are publically available. For example, in the case of the NXP SE050, these keys would be available in the OP-TEE source tree [2] and of course in the documentation corresponding to the part. To address that, users are required to rotate/provision those keys (ie, generate new keys and write them in the secure element's persistent memory). For information on SCP03, check the Global Platform HomePage and google for that term [1] [1] globalplatform.org [2] https://github.com/OP-TEE/optee_os/ check: core/drivers/crypto/se050/adaptors/utils/scp_config.c Signed-off-by: Jorge Ramirez-Ortiz Reviewed-by: Simon Glass --- common/Kconfig | 8 ++++++ common/Makefile | 1 + common/scp03.c | 53 ++++++++++++++++++++++++++++++++++++ include/scp03.h | 21 ++++++++++++++ include/tee/optee_ta_scp03.h | 21 ++++++++++++++ 5 files changed, 104 insertions(+) create mode 100644 common/scp03.c create mode 100644 include/scp03.h create mode 100644 include/tee/optee_ta_scp03.h diff --git a/common/Kconfig b/common/Kconfig index 2bb3798f80..482f123534 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -588,6 +588,14 @@ config AVB_BUF_SIZE endif # AVB_VERIFY +config SCP03 + bool "Build SCP03 - Secure Channel Protocol O3 - controls" + depends on OPTEE || SANDBOX + depends on TEE + help + This option allows U-Boot to enable and or provision SCP03 on an OPTEE + controlled Secured Element. + config SPL_HASH bool # "Support hashing API (SHA1, SHA256, etc.)" help diff --git a/common/Makefile b/common/Makefile index daeea67cf2..215b8b26fd 100644 --- a/common/Makefile +++ b/common/Makefile @@ -137,3 +137,4 @@ obj-$(CONFIG_CMD_LOADB) += xyzModem.o obj-$(CONFIG_$(SPL_TPL_)YMODEM_SUPPORT) += xyzModem.o obj-$(CONFIG_AVB_VERIFY) += avb_verify.o +obj-$(CONFIG_SCP03) += scp03.o diff --git a/common/scp03.c b/common/scp03.c new file mode 100644 index 0000000000..09ef7b5ba3 --- /dev/null +++ b/common/scp03.c @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2021, Foundries.IO + * + */ + +#include +#include +#include +#include + +static int scp03_enable(bool provision) +{ + const struct tee_optee_ta_uuid uuid = PTA_SCP03_UUID; + struct tee_open_session_arg session; + struct tee_invoke_arg invoke; + struct tee_param param; + struct udevice *tee = NULL; + + tee = tee_find_device(tee, NULL, NULL, NULL); + if (!tee) + return -ENODEV; + + memset(&session, 0, sizeof(session)); + tee_optee_ta_uuid_to_octets(session.uuid, &uuid); + if (tee_open_session(tee, &session, 0, NULL)) + return -ENXIO; + + memset(¶m, 0, sizeof(param)); + param.attr = TEE_PARAM_ATTR_TYPE_VALUE_INPUT; + param.u.value.a = provision; + + memset(&invoke, 0, sizeof(invoke)); + invoke.func = PTA_CMD_ENABLE_SCP03; + invoke.session = session.session; + + if (tee_invoke_func(tee, &invoke, 1, ¶m)) + return -EIO; + + tee_close_session(tee, session.session); + + return 0; +} + +int tee_enable_scp03(void) +{ + return scp03_enable(false); +} + +int tee_provision_scp03(void) +{ + return scp03_enable(true); +} diff --git a/include/scp03.h b/include/scp03.h new file mode 100644 index 0000000000..729667ccd1 --- /dev/null +++ b/include/scp03.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2021, Foundries.IO + * + */ + +#ifndef _SCP03_H +#define _SCP03_H + +/* + * Requests to OPTEE to enable or provision the Secure Channel Protocol on its + * Secure Element + * + * If key provisioning is requested, OPTEE shall generate new SCP03 keys and + * write them to the Secure Element. + * + * Both functions return < 0 on error else 0. + */ +int tee_enable_scp03(void); +int tee_provision_scp03(void); +#endif /* _SCP03_H */ diff --git a/include/tee/optee_ta_scp03.h b/include/tee/optee_ta_scp03.h new file mode 100644 index 0000000000..13f9956d98 --- /dev/null +++ b/include/tee/optee_ta_scp03.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ +/* + * (C) Copyright 2021, Foundries.IO + * + */ +#ifndef __TA_SCP03_H +#define __TA_SCP03_H + +#define PTA_SCP03_UUID { 0xbe0e5821, 0xe718, 0x4f77, \ + { 0xab, 0x3e, 0x8e, 0x6c, 0x73, 0xa9, 0xc7, 0x35 } } + +/* + * Enable Secure Channel Protocol functionality (SCP03) on the Secure Element. + * Setting the operation value to something different than NULL will trigger + * the SCP03 provisioning request. + * + * in params[0].a = operation + */ +#define PTA_CMD_ENABLE_SCP03 0 + +#endif /*__TA_SCP03_H*/