Code change:
Claims are assertions that represent characteristics of an Attester's Target Environment. <del> Claims are part Conceptual Message and are, for example, used to appraise the integrity of Attesters via a Verifiers.  The other </del> <ins> Claims are part of a Conceptual Message and are, for example, used to appraise the integrity of Attesters via Verifiers.  The other </ins> information elements in this section can be expressed as Claims in any type of Conceptional Messages. <ins> _optional_ Event Logs accompany Claims by providing event trails of security- critical events in a system.  The primary purpose of Event Logs is to support Claim reproducibility by providing information on how Claims originated. </ins> _mandatory_ Reference Values as defined in I-D.ietf-rats-architecture.  This

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text: Authentication Secret IDs ('authSecID'): mandatory In DAA, Authentication Secret IDs are represented by the Endorser (DAA issuer)'s public key that MUST be used to create DAA credentials for the corresponding Authentication Secrets used to protect Evidence. In DAA, an Authentication Secret ID does not identify a unique Attesting Environment but associated with a group of Attesting Environments. This is because an Attesting Environment should not be distinguishable and the DAA credential which represents the Attesting Environment is randomised each time it used. Comment > In my understanding, here says that the DAA credential identities the Attesting Environment. Compared with the description in the "Attester Identity" part, what does the DAA credential represent actually? Reference Claims ('refClaims') mandatory Reference Claims are components of Reference Values as defined in [I-D.ietf-rats-architecture]. [Editor's Note: Definition might become obsolete, if replaced by Reference Values. Is there a difference between Claims and Values here? Analogously, why is not named Reference Claims in the RATS arch?] Comment > I suggest using Reference Values to keep consistent with the RATS arch. Reference Claims are used to appraise the Claims received from an Attester via appraisal by direct comparison. Comment > "Direct comparison" isn't the correct expression, the comparison can have other rules. Claim Selection ('claimSelection'): optional A statement that represents a (sub-)set of Claims that can be created by an Attester. Claim Selections can act as filters that can specify the exact set of Claims to be included in Evidence. An Attester MAY decide whether or not to provide all Claims as requested via a Claim Selection. Comment > The "all Claims" may be ambiguous, I'd like to double check, does it refer to all Claims that the Attester can create or refer to all Claims requested in the Claim Selection? Section 8.1 Challenge/Response Remote Attestation Comment > In the sequence diagram, some elements in the bracket are not defined in the "Information Elements" section, such as targetEnvironment, collectedClaims, eventLog. Should these elements be defined? Section 9 Additional Application-Specific Requirements Depending on the use cases covered, there can be additional requirements. An exemplary subset is illustrated in this section.