Remove COSE Algorithms for "[ALG] with key derived by [ARKG]"

These shouldn't be needed since the "derived by ARKG" part is already expressed
in the key type. The signature verifier does not need to do anything special to
verify these signatures, as it is assumed the verifier receives the derived
public key already blinded and can use it to verify the signature as normal.

draft-bradleylundberg-cfrg-arkg.md

@@ -939,6 +939,8 @@ An ARKG public seed is represented as a COSE_Key structure [RFC9052]
 with `kty` value TBD (placeholder value -65537).
 This key type defines key type parameters -1 and -2 for the `BL` and `KEM` public key, respectively.
 
+The `alg` parameter defines the `alg` parameter of ARKG derived public keys derived from this ARKG public seed.
+
 The following CDDL [RFC8610] example represents an `ARKG-P256ADD-ECDH` public seed
 restricted to generating derived public keys for use with the ESP256 [fully-spec-algs] signature algorithm:
 
@@ -948,7 +950,7 @@ restricted to generating derived public keys for use with the ESP256 [fully-spec
                ; kid: Opaque identifier
   2: h'60b6dfddd31659598ae5de49acb220d8
        704949e84d484b68344340e2565337d2',
-  3: -65539,   ; alg: ESP256-ARKG
+  3: -9,       ; alg: ESP256
 
   -1: {        ; BL public key
     1: 2,      ; kty: EC2
@@ -974,12 +976,12 @@ The following is the same example encoded as CBOR:
 
 ~~~
 h'a50139fbb402582060b6dfddd31659598ae5de49acb220d8704949e84d484b68
-  344340e2565337d2033a0001000220a40102200121582069380fc1c3b0965213
-  4feefba61776f97af875ce46ca20252c4165102966ebc52258208b515831462c
-  cb0bd55cba04bfd50da63faf18bd845433622daf97c06a10d0f121a401022001
-  2158205c099bec31faa581d14e208250d3ffda9ec7f543043008bc84967a8d87
-  5b5d78225820539d57429fcb1c138da29010a155dca14566a8f55ac2f1780810
-  c49d4ed72d58'
+  344340e2565337d2032820a40102200121582069380fc1c3b09652134feefba6
+  1776f97af875ce46ca20252c4165102966ebc52258208b515831462ccb0bd55c
+  ba04bfd50da63faf18bd845433622daf97c06a10d0f121a4010220012158205c
+  099bec31faa581d14e208250d3ffda9ec7f543043008bc84967a8d875b5d7822
+  5820539d57429fcb1c138da29010a155dca14566a8f55ac2f1780810c49d4ed7
+  2d58'
 ~~~
 
 
@@ -1011,7 +1013,7 @@ and restricted for use with the ESP256 [fully-spec-algs] signature algorithm:
                ; kid: Opaque identifier of ARKG-pub
   2: h'60b6dfddd31659598ae5de49acb220d8
        704949e84d484b68344340e2565337d2',
-  3: -65539,   ; alg: ESP256-ARKG
+  3: -9,       ; alg: ESP256
 
                ; ARKG-P256ADD-ECDH key handle
                ; (truncated HMAC-SHA-256 followed by
@@ -1031,10 +1033,9 @@ The following is the same example encoded as CBOR:
 
 ~~~
 h'a40139fbb502582060b6dfddd31659598ae5de49acb220d8704949e84d484b68
-  344340e2565337d2033a00010002205851ae079e9c52212860678a7cee25b6a6
-  d4048219d973768f8e1adb8eb84b220b0ee3a2532828b9aa65254fe3717a2949
-  9e9baee70cea75b5c8a2ec2eb737834f7467e37b3254776f65f4cfc81e2bc474
-  7a84'
+  344340e2565337d20328205851ae079e9c52212860678a7cee25b6a6d4048219
+  d973768f8e1adb8eb84b220b0ee3a2532828b9aa65254fe3717a29499e9baee7
+  0cea75b5c8a2ec2eb737834f7467e37b3254776f65f4cfc81e2bc4747a84'
 ~~~
 
 
@@ -1120,62 +1121,6 @@ This section registers the following values in the IANA "COSE Key Type Parameter
   - Reference: {{cose-key-refs}} of this document
 
 
-## COSE Algorithms Registrations
-
-This section registers the following values in the IANA "COSE Algorithms" registry [IANA.COSE].
-
-- Name: ESP256-ARKG
-  - Value: TBD (Placeholder -65539)
-  - Description: ESP256 with key derived by ARKG-P256ADD-ECDH
-  - Capabilities: \[kty\]
-  - Change Controller: TBD
-  - Reference: [fully-spec-algs], {{ARKG-P256ADD-ECDH}} of this document
-  - Recommended: Yes
-
-- Name: ESP384-ARKG
-  - Value: TBD (Placeholder -65540)
-  - Description: ESP384 with key derived by ARKG-P384ADD-ECDH
-  - Capabilities: \[kty\]
-  - Change Controller: TBD
-  - Reference: [fully-spec-algs], {{ARKG-P384ADD-ECDH}} of this document
-  - Recommended: Yes
-
-- Name: ESP512-ARKG
-  - Value: TBD (Placeholder -65541)
-  - Description: ESP512 with key derived by ARKG-P521ADD-ECDH
-  - Capabilities: \[kty\]
-  - Change Controller: TBD
-  - Reference: [fully-spec-algs], {{ARKG-P521ADD-ECDH}} of this document
-  - Recommended: Yes
-
-- Name: ES256K-ARKG
-  - Value: TBD (Placeholder -65542)
-  - Description: ES256K with key derived by ARKG-P256kADD-ECDH
-  - Capabilities: \[kty\]
-  - Change Controller: TBD
-  - Reference: [RFC8812], {{ARKG-P256kADD-ECDH}} of this document
-  - Recommended: Yes
-
-- Name: Ed25519-ARKG
-  - Value: TBD (Placeholder -65543)
-  - Description: Ed25519 with key derived by ARKG-edwards25519ADD-X25519
-  - Capabilities: \[kty\]
-  - Change Controller: TBD
-  - Reference: [fully-spec-algs], {{ARKG-edwards25519ADD-X25519}} of this document
-  - Recommended: Yes
-
-- Name: Ed448-ARKG
-  - Value: TBD (Placeholder -65544)
-  - Description: Ed448 with key derived by ARKG-edwards448ADD-X448
-  - Capabilities: \[kty\]
-  - Change Controller: TBD
-  - Reference: [fully-spec-algs], {{ARKG-edwards448ADD-X448}} of this document
-  - Recommended: Yes
-
-
-TODO: Add the rest
-
-
 # Design rationale
 
 ## Using a MAC {#design-rationale-mac}
@@ -1261,5 +1206,6 @@ TODO
   - Renamed section "Using HMAC to adapt a KEM without {integrity protection => ciphertext integrity}".
   - Fixed info argument to HMAC in section "Using HMAC to adapt a KEM without ciphertext integrity".
   - Added reference to Shoup for definition of key encapsulation mechanism.
-  - Added CDDL definition of COSE_Key_Ref
+  - Added CDDL definition of COSE_Key_Ref.
   - Editorial fixes to references.
+  - Removed proposed COSE Algorithms registrations.