From patchwork Tue May 28 09:46:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jarkko Sakkinen X-Patchwork-Id: 13676385 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 9D8CB17E8F4; Tue, 28 May 2024 09:46:53 +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=1716889613; cv=none; b=OPAneL88sI1n1AjATKWpwy/pcHXnV8q0CdTk4TvSD7o6fYdLVgnvdYzb/46lC0ksOSiRrbUMThszkruOaWBdno46zHVP9fFrcIZliFc/rYm7KU75lOR1twh79YCQ6DJZ0GkSGA7wGUzJxoy9XmU25vfrOtLurQXLCdwQTDqdRv8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716889613; c=relaxed/simple; bh=uvIeCtTEEJDYfyHrP/Gk+XUZtIAdmLorcvNIp9zS3W8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Ad8Mmr5+pStnefpSsORPT5+2BCRebe80hgJzYPTLbLEbK1j188jKT2AB6xjCh1VFTcevKGrYkZgQKtz/jgDk+c/Uanzj/vZDm2TgqKaKeubR6OYeP42+zjjnREVLNXTptKHd6Js4Jcm1WupGOcPZUyRKO2Qw4pWMO1EJKnLi/H8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eypyjVtk; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="eypyjVtk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A8EC0C3277B; Tue, 28 May 2024 09:46:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1716889613; bh=uvIeCtTEEJDYfyHrP/Gk+XUZtIAdmLorcvNIp9zS3W8=; h=From:To:Cc:Subject:Date:From; b=eypyjVtkDE746G/DlSuQfj0JPp+lgxIXGkYF0Md7/HpuJrnvBxpzYg2FPjMpj3Ia/ Io657MDr6w3x4l6vxIO8hkF3fHeOyrSr9NZBWIgrgnGrlRaYztQAWWGWaoq/kXhW0g hZlbSZJcAAzjMDJUTbkGdUr73miojQsjEfpUZRIfv0rTtM6bLgTVxBaN9eh2dHrfLQ u3rTuPELCfsQPV0DUesKXzk04kGo7Qzxl6OFiG597W6+t3y8Rj+X+f2Y92vGrgObqu Q9ojWNfGruQTLeMxggMtV0ldGMiM0iExQQSLp2lbMiIRxyOXXXgHkUIYBaEpq/DU9S J+g6tVTmjdHSw== From: Jarkko Sakkinen To: linux-integrity@vger.kernel.org Cc: keyrings@vger.kernel.org, James.Bottomley@HansenPartnership.com, Jarkko Sakkinen , Peter Huewe , Jason Gunthorpe , Stefan Berger , Ard Biesheuvel , Mario Limonciello , linux-kernel@vger.kernel.org Subject: [PATCH] tpm: Rename TPM2_OA_TMPL to TPM2_OA_NULL_KEY and make it local Date: Tue, 28 May 2024 12:46:41 +0300 Message-ID: <20240528094645.15583-1-jarkko@kernel.org> X-Mailer: git-send-email 2.45.1 Precedence: bulk X-Mailing-List: keyrings@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Rename and document TPM2_OA_TMPL, as originally requested in the patch set review, but left unaddressed without any appropriate reasoning. The new name is TPM2_OA_NULL_KEY, has a documentation and is local only to tpm2-sessions.c. Link: https://lore.kernel.org/linux-integrity/ddbeb8111f48a8ddb0b8fca248dff6cc9d7079b2.camel@HansenPartnership.com/ Link: https://lore.kernel.org/linux-integrity/CZCKTWU6ZCC9.2UTEQPEVICYHL@suppilovahvero/ Signed-off-by: Jarkko Sakkinen --- drivers/char/tpm/tpm2-sessions.c | 18 ++++++++++++++++-- include/linux/tpm.h | 7 ------- 2 files changed, 16 insertions(+), 9 deletions(-) diff --git a/drivers/char/tpm/tpm2-sessions.c b/drivers/char/tpm/tpm2-sessions.c index ea8860661876..ff2b7f4703fa 100644 --- a/drivers/char/tpm/tpm2-sessions.c +++ b/drivers/char/tpm/tpm2-sessions.c @@ -954,6 +954,20 @@ int tpm2_start_auth_session(struct tpm_chip *chip) } EXPORT_SYMBOL(tpm2_start_auth_session); +/* + * A mask containing the object attributes for the kernel held null primary key + * used in HMAC encryption. For more information on specific attributes look up + * to "8.3 TPMA_OBJECT (Object Attributes)". + */ +#define TPM2_OA_NULL_KEY ( \ + TPM2_OA_NO_DA | \ + TPM2_OA_FIXED_TPM | \ + TPM2_OA_FIXED_PARENT | \ + TPM2_OA_SENSITIVE_DATA_ORIGIN | \ + TPM2_OA_USER_WITH_AUTH | \ + TPM2_OA_DECRYPT | \ + TPM2_OA_RESTRICTED) + /** * tpm2_parse_create_primary() - parse the data returned from TPM_CC_CREATE_PRIMARY * @@ -1018,7 +1032,7 @@ static int tpm2_parse_create_primary(struct tpm_chip *chip, struct tpm_buf *buf, val = tpm_buf_read_u32(buf, &offset_t); /* object properties */ - if (val != TPM2_OA_TMPL) + if (val != TPM2_OA_NULL_KEY) return -EINVAL; /* auth policy (empty) */ @@ -1178,7 +1192,7 @@ static int tpm2_create_primary(struct tpm_chip *chip, u32 hierarchy, tpm_buf_append_u16(&template, TPM_ALG_SHA256); /* object properties */ - tpm_buf_append_u32(&template, TPM2_OA_TMPL); + tpm_buf_append_u32(&template, TPM2_OA_NULL_KEY); /* sauth policy (empty) */ tpm_buf_append_u16(&template, 0); diff --git a/include/linux/tpm.h b/include/linux/tpm.h index b3217200df28..d3b9e9f9073e 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -401,13 +401,6 @@ enum tpm2_object_attributes { #define AES_KEY_BYTES AES_KEYSIZE_128 #define AES_KEY_BITS (AES_KEY_BYTES*8) -#define TPM2_OA_TMPL (TPM2_OA_NO_DA | \ - TPM2_OA_FIXED_TPM | \ - TPM2_OA_FIXED_PARENT | \ - TPM2_OA_SENSITIVE_DATA_ORIGIN | \ - TPM2_OA_USER_WITH_AUTH | \ - TPM2_OA_DECRYPT | \ - TPM2_OA_RESTRICTED) enum tpm2_session_attributes { TPM2_SA_CONTINUE_SESSION = BIT(0),