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Editorial
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marco-tiloca-sics committed Feb 26, 2024
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4 changes: 2 additions & 2 deletions draft-ietf-core-observe-multicast-notifications.md
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Expand Up @@ -1562,7 +1562,7 @@ Additionally to what is defined in {{sec-server-side}}, the CBOR map in the info

* In the Common Context of the Group OSCORE Security Context, the parameter AEAD Algorithm and the parameter Pairwise Key Agreement Algorithm are not set (see {{Section 2.1.1 of I-D.ietf-core-oscore-groupcomm}} and {{Section 2.1.9 of I-D.ietf-core-oscore-groupcomm}}).

* Consistently, when building the two OSCORE 'external_aad' to process messages protected with Group OSCORE in this OSCORE group, (see {{Section 4.4 of I-D.ietf-core-oscore-groupcomm}}), the elements 'alg_aead' and 'alg_pairwise_key_agreement' within the 'algorithms' arrays are set to the CBOR simple value null (0xf6).
* Consistently, when building the two OSCORE 'external_aad' to process messages protected with Group OSCORE in this OSCORE group, (see {{Section 4.4 of I-D.ietf-core-oscore-groupcomm}}), the elements 'alg_aead' and 'alg_pairwise_key_agreement' within the 'algorithms' arrays are set to the CBOR simple value `null` (0xf6).

* 'srv_cred': this element is a CBOR byte string, with value the original binary representation of the server's authentication credential used in the OSCORE group. In particular, the original binary representation complies with the format specified by the 'cred_fmt' element of 'gp_material'.

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* In the Common Context of the Group OSCORE Security Context, the parameter Pairwise Key Agreement Algorithm is not set (see {{Section 2.1.9 of I-D.ietf-core-oscore-groupcomm}}).

* Consistently, when building the two OSCORE 'external_aad' to process messages protected with Group OSCORE in this OSCORE group, (see {{Section 4.4 of I-D.ietf-core-oscore-groupcomm}}), the element 'alg_pairwise_key_agreement' within the 'algorithms' arrays is set to the CBOR simple value null (0xf6).
* Consistently, when building the two OSCORE 'external_aad' to process messages protected with Group OSCORE in this OSCORE group, (see {{Section 4.4 of I-D.ietf-core-oscore-groupcomm}}), the element 'alg_pairwise_key_agreement' within the 'algorithms' arrays is set to the CBOR simple value `null` (0xf6).

If a deterministic request is used as phantom observation request for a group observation, the server does not assist clients that are interested to take part in the group observation but do not support deterministic requests. This is consistent with the fact that the setup in question already relies on a lot of agreed pre-configuration.

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