< draft-tschofenig-rats-psa-token-00.txt		draft-tschofenig-rats-psa-token-01.txt >
	RATS H. Tschofenig, Ed.		RATS H. Tschofenig, Ed.
	Internet-Draft S. Frost		Internet-Draft S. Frost
	Intended status: Standards Track M. Brossard		Intended status: Standards Track M. Brossard
	Expires: September 12, 2019 A. Shaw		Expires: October 10, 2019 A. Shaw
	Arm Limited		Arm Limited
	March 11, 2019		April 08, 2019
	Arm's Platform Security Architecture (PSA) Attestation Token		Arm's Platform Security Architecture (PSA) Attestation Token
	draft-tschofenig-rats-psa-token-00		draft-tschofenig-rats-psa-token-01
	Abstract		Abstract
	The insecurity of IoT systems is a widely known and discussed		The insecurity of IoT systems is a widely known and discussed
	problem. The Arm Platform Security Architecture (PSA) is being		problem. The Arm Platform Security Architecture (PSA) is being
	developed to address this challenge by making it easier to build		developed to address this challenge by making it easier to build
	secure systems.		secure systems.
	This document specifies token format and claims used in the		This document specifies token format and claims used in the
	attestation API of the Arm Platform Security Architecture (PSA).		attestation API of the Arm Platform Security Architecture (PSA).
	skipping to change at page 1, line 43 ¶		skipping to change at page 1, line 43 ¶
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at https://datatracker.ietf.org/drafts/current/.		Drafts is at https://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on September 12, 2019.		This Internet-Draft will expire on October 10, 2019.
	Copyright Notice		Copyright Notice
	Copyright (c) 2019 IETF Trust and the persons identified as the		Copyright (c) 2019 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(https://trustee.ietf.org/license-info) in effect on the date of		(https://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	skipping to change at page 7, line 49 ¶		skipping to change at page 7, line 49 ¶
	+-----+-------------+-----------+-----------------------------------+		+-----+-------------+-----------+-----------------------------------+
	| Key | Type | Mandatory | Description |		| Key | Type | Mandatory | Description |
	| ID | | | |		| ID | | | |
	+-----+-------------+-----------+-----------------------------------+		+-----+-------------+-----------+-----------------------------------+
	| 1 | Measurement | No | A short string representing the |		| 1 | Measurement | No | A short string representing the |
	| | Type | | role of this software component |		| | Type | | role of this software component |
	| | | | (e.g. 'BL' for Boot Loader). |		| | | | (e.g. 'BL' for Boot Loader). |
	| | | | |		| | | | |
	| 2 | Measurement | Yes | Represents a hash of the |		| 2 | Measurement | Yes | Represents a hash of the |
	| | value | | invariant software component in |		| | Value | | invariant software component in |
	| | | | memory at startup time. The value |		| | | | memory at startup time. The value |
	| | | | must be a cryptographic hash of |		| | | | must be a cryptographic hash of |
	| | | | 256 bits or stronger. |		| | | | 256 bits or stronger. |
	| | | | |		| | | | |
	| 3 | Reserved | No | Reserved |		| 3 | Reserved | No | Reserved |
	| | | | |		| | | | |
	| 4 | Version | No | The issued software version in |		| 4 | Version | No | The issued software version in |
	| | | | the form of a text string. The |		| | | | the form of a text string. The |
	| | | | value of this claim will |		| | | | value of this claim will |
	| | | | correspond to the entry in the |		| | | | correspond to the entry in the |
	| | | | original signed manifest of the |		| | | | original signed manifest of the |
	| | | | component. |		| | | | component. |
	| | | | |		| | | | |
	| 5 | Signer ID | Yes | The hash of a signing authority |		| 5 | Signer ID | No | The hash of a signing authority |
	| | | | public key for the software |		| | | | public key for the software |
	| | | | component. The value of this |		| | | | component. The value of this |
	| | | | claim will correspond to the |		| | | | claim will correspond to the |
	| | | | entry in the original manifest |		| | | | entry in the original manifest |
	| | | | for the component. |		| | | | for the component. |
	| | | | |		| | | | |
	| 6 | Measurement | No | Description of the software |		| 6 | Measurement | No | Description of the software |
	| | description | | component, which represents the |		| | description | | component, which represents the |
	| | | | way in which the measurement |		| | | | way in which the measurement |
	| | | | value of the software component |		| | | | value of the software component |
End of changes. 6 change blocks.
	6 lines changed or deleted		6 lines changed or added
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