| UMAC | Algorithm | 128 bit | MAC | Authentication, Integrity | RFC 4418 [\[11\]](#_ref_11) | |
> NOTE 1: The combination of the mechanism mentioned in Table K.1: ACM-extended cryptographic mechanisms together with the mechanisms in ACM that is appropriate for the cryptographic use-case to form a cryptographic protocol are allowed. For example ChaCha20-Poly1305, HMAC-blake2s or X25519ML-KEM768.
> NOTE 1: The combination of the mechanism mentioned in Table K.3.2: ACM-extended cryptographic mechanisms together with the mechanisms in ACM that is appropriate for the cryptographic use-case to form a cryptographic protocol are allowed. For example ChaCha20-Poly1305, HMAC-blake2s or X25519ML-KEM768.
> NOTE 2: The use-case defined in K.3.2 marked in “Related product function(s) / use case(s), where applicable” is a non-exhaustive list and listed algorithm can be used for other appropriate use-cases as well.
@@ -56,7 +56,7 @@ The threat model considers the following assets:
For the purposes of DA-RDPS-001, Table R.1 identifies potential categories of RDPS interaction content and indicates the security properties to be considered for each category when determining the applicable Annex R requirement families.
Table R.1: Security properties for DA-RDPS-001
**Table R.1: Security properties for DA-RDPS-001**
| Content type | Data authenticity | Integrity | Confidentiality |
The table below identifies the CRA Annex I Part I requirements that are directly relevant to the RDPS boundary and maps each to the corresponding Annex R requirements. The purpose of this mapping is to support manufacturer traceability and to identify directly relevant CRA requirements that are not yet fully covered by the current Annex R draft. Requirements not covered by Annex R remain addressed by the core part of the standard, insofar as those requirements apply to the product as a whole.
Table R.5: CRA Annex I Part I ↔ Annex R requirements mapping
**Table R.5: CRA Annex I Part I ↔ Annex R requirements mapping**
| CRA Annex | CRA text (summary) | Annex R mapping | Rationale / gap observation |