From patchwork Thu Mar 7 15:38:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gstir X-Patchwork-Id: 13585908 X-Patchwork-Delegate: herbert@gondor.apana.org.au Received: from mail-lj1-f169.google.com (mail-lj1-f169.google.com [209.85.208.169]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2DCDA12FB2A for ; Thu, 7 Mar 2024 15:39:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.169 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709825948; cv=none; b=qu4v7gkJuRp+j2xJlYEyK/XbLSrkwqIGSNCMYMKV1ktTPi+P5ElLE5JHTNT56FhzwVtLDh/xFCoaHv+PxeijYOIIikllBCOa9QTUj+hWasmQaj/3pOXObXvxJrLPmAgVxlP0boIrlGHmHwwb5Xq/TWXljlrYbauhfbUwE3TEvoQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709825948; c=relaxed/simple; bh=A0O6/w7bbUy1TrcLSjuH9e83BoPYKup6oiJvr7VavE0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=o4nuu0PEJ/u/AVgQk7WN1WAYV6hi69KMboI7PA8yQUyfy9UMbMQiULwRzzN03aMMarjdMBfnfCTPLSpWPWZHHrYKP9iPSlgrF7G9jTG7DnkBIiqeHKnOy3RxQkDC5IEmVfyOt2AFbEhGicyCrktEaZD0eOVAjt+BIgJLoi96jzA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sigma-star.at; spf=pass smtp.mailfrom=sigma-star.at; dkim=pass (2048-bit key) header.d=sigma-star.at header.i=@sigma-star.at header.b=JAvWO9KN; arc=none smtp.client-ip=209.85.208.169 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sigma-star.at Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sigma-star.at Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sigma-star.at header.i=@sigma-star.at header.b="JAvWO9KN" Received: by mail-lj1-f169.google.com with SMTP id 38308e7fff4ca-2d29aad15a5so12055951fa.3 for ; Thu, 07 Mar 2024 07:39:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sigma-star.at; s=google; t=1709825944; x=1710430744; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=s5byLpxSkDHpWtFqk+o0iXmSYvszrS7+YdXxWavlXQY=; b=JAvWO9KNPCWPeNiKas3mCKiB18zgWaGnFoppsCH7DfyWJx7CHooFSfJDD90LGuKjew wrS4oJIJtLpO+rFHNsBjHa2wlo22w4+4+UTYWgm1Q34YiGe7fnh6BmLu3mWEQkRSKbeC EQUGztP2DxfJjxVPDMgPxDQyhF/ivSacxEgIlygjozM1SIe5AyK4ubpdcfslNlNmh/Lf VUuM45cRJL0o1Twq05Ai/NDpZFPTy/ls16uRBcNzeuCpl9Qi+Y/8FeMM4ivJ40NXZaLs udq4jjOVQQlro9TwSR7BYmZIVlNvsNeadmj8R6Trk0kI8HhdppjqkTC+nIgYJ8WXmcUL cMOQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709825944; x=1710430744; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=s5byLpxSkDHpWtFqk+o0iXmSYvszrS7+YdXxWavlXQY=; b=Mx5y+oMUNnAV5An3eoWWdWJDPqEi4ACi7i2HNdC+dAzKkOQYJrmRY9FubRj8OTiinM sMT83e1De2Wnbu3Xj0O4DLrcd/osCpxO9o/eW/KqfG4aCOGzc5e3AsUzLoRawE5p5tkK 4FdfKl1qZCYJKmNKQyWcAVV0x6lQf9PxLnNwOVBiyWp2q+F096rJR2BnC3+XS2hkzzso Byh6bhhQ91g6qKonyPZlCm+fvDQg5gwZjvMtkH2lncoB5DWwZn9RUvlNOrg26RnNpDqf pD2Mk4zM7ffV8zm5YgxXsJRe+rmE9dMAPe561QS0DLdyR8hdQ4yt+R/Q4OMd70D0s5O2 HMUg== X-Forwarded-Encrypted: i=1; AJvYcCXjZoNx6ymZgEHXFy5HGI1T4XaD8l/we5mKlAh1YFggd9mElO01nyEe+SqX5ZInW41fKNOyV1p3zPbZsTPQQd1sv7n/biwW8pQZQnGJ X-Gm-Message-State: AOJu0YzEupnvJbhq5Bcwr5Hu2/DN3YrZSetVp2BnTeafE6y9Lp8grg7c WC6n3Cc/+kb1tkAUcfpL5YUy0rdy+VjWCiTfAAcsBrYMaoRROESd9ujNAcoP4Z0= X-Google-Smtp-Source: AGHT+IH+LPdv4uI8ZtpLAROMjGCY94DX6j2AvsclNLplVSroc4bHXuz/v1iWuKlTq88uAf/Bob4Hwg== X-Received: by 2002:a2e:a99f:0:b0:2d3:2a95:6f0b with SMTP id x31-20020a2ea99f000000b002d32a956f0bmr1921680ljq.12.1709825944291; Thu, 07 Mar 2024 07:39:04 -0800 (PST) Received: from localhost ([82.150.214.1]) by smtp.gmail.com with UTF8SMTPSA id n24-20020a05640204d800b00566f92f1facsm6501964edw.36.2024.03.07.07.39.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 07 Mar 2024 07:39:04 -0800 (PST) From: David Gstir To: Mimi Zohar , James Bottomley , Jarkko Sakkinen , Herbert Xu , "David S. Miller" Cc: David Gstir , Shawn Guo , Jonathan Corbet , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Ahmad Fatoum , sigma star Kernel Team , David Howells , Li Yang , Paul Moore , James Morris , "Serge E. Hallyn" , "Paul E. McKenney" , Randy Dunlap , Catalin Marinas , "Rafael J. Wysocki" , Tejun Heo , "Steven Rostedt (Google)" , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org, keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-security-module@vger.kernel.org Subject: [PATCH v6 2/6] KEYS: trusted: improve scalability of trust source config Date: Thu, 7 Mar 2024 16:38:29 +0100 Message-ID: <20240307153842.80033-3-david@sigma-star.at> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240307153842.80033-1-david@sigma-star.at> References: <20240307153842.80033-1-david@sigma-star.at> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Enabling trusted keys requires at least one trust source implementation (currently TPM, TEE or CAAM) to be enabled. Currently, this is done by checking each trust source's config option individually. This does not scale when more trust sources like the one for DCP are added. Add config HAVE_TRUSTED_KEYS which is set to true by each trust source once its enabled and adapt the check for having at least one active trust source to use this option. Whenever a new trust source is added, it now needs to select HAVE_TRUSTED_KEYS. Signed-off-by: David Gstir --- security/keys/trusted-keys/Kconfig | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/security/keys/trusted-keys/Kconfig b/security/keys/trusted-keys/Kconfig index dbfdd8536468..553dc117f385 100644 --- a/security/keys/trusted-keys/Kconfig +++ b/security/keys/trusted-keys/Kconfig @@ -1,3 +1,6 @@ +config HAVE_TRUSTED_KEYS + bool + config TRUSTED_KEYS_TPM bool "TPM-based trusted keys" depends on TCG_TPM >= TRUSTED_KEYS @@ -9,6 +12,7 @@ config TRUSTED_KEYS_TPM select ASN1_ENCODER select OID_REGISTRY select ASN1 + select HAVE_TRUSTED_KEYS help Enable use of the Trusted Platform Module (TPM) as trusted key backend. Trusted keys are random number symmetric keys, @@ -20,6 +24,7 @@ config TRUSTED_KEYS_TEE bool "TEE-based trusted keys" depends on TEE >= TRUSTED_KEYS default y + select HAVE_TRUSTED_KEYS help Enable use of the Trusted Execution Environment (TEE) as trusted key backend. @@ -29,10 +34,11 @@ config TRUSTED_KEYS_CAAM depends on CRYPTO_DEV_FSL_CAAM_JR >= TRUSTED_KEYS select CRYPTO_DEV_FSL_CAAM_BLOB_GEN default y + select HAVE_TRUSTED_KEYS help Enable use of NXP's Cryptographic Accelerator and Assurance Module (CAAM) as trusted key backend. -if !TRUSTED_KEYS_TPM && !TRUSTED_KEYS_TEE && !TRUSTED_KEYS_CAAM -comment "No trust source selected!" +if !HAVE_TRUSTED_KEYS + comment "No trust source selected!" endif