arc: Deprecate ARC P384

Author: simonjbeaumont

Sources/_CryptoExtras/ARC/ARC+API.swift

@@ -396,6 +396,7 @@ extension P256._ARCV1.PrivateKey {
 
 // MARK: - P384 + ARC(P-384)
 @available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, macCatalyst 16.0, visionOS 2.0, *)
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384 {
     /// Anonymous Rate-Limited Credentials (ARC).
     ///
@@ -413,6 +414,7 @@ extension P384 {
 }
 
 @available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, macCatalyst 16.0, visionOS 2.0, *)
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1 {
     /// The server secrets used to issue and verify credentials.
     public struct PrivateKey: Sendable {
@@ -630,6 +632,7 @@ extension P384._ARCV1 {
 }
 
 @available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, macCatalyst 16.0, visionOS 2.0, *)
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.PublicKey {
     internal func prepareCredentialRequest<D: DataProtocol>(
         requestContext: D,
@@ -667,6 +670,7 @@ extension P384._ARCV1.PublicKey {
 }
 
 @available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, macCatalyst 16.0, visionOS 2.0, *)
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.PrivateKey {
     internal func issue(
         _ credentialRequest: P384._ARCV1.CredentialRequest,
@@ -683,6 +687,7 @@ extension P384._ARCV1.PrivateKey {
 }
 
 @available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, macCatalyst 16.0, visionOS 2.0, *)
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.PublicKey {
     /// Create a credential from the issuer response.
     public func finalize(
@@ -695,6 +700,7 @@ extension P384._ARCV1.PublicKey {
 }
 
 @available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, macCatalyst 16.0, visionOS 2.0, *)
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.Credential {
     internal mutating func makePresentation<D: DataProtocol>(
         context: D,
@@ -740,6 +746,7 @@ extension P384._ARCV1.Credential {
 }
 
 @available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, macCatalyst 16.0, visionOS 2.0, *)
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.PrivateKey {
     /// Verify a presentation is valid for a given attribute.
     ///

Tests/_CryptoExtrasTests/ARC/ARCAPITests.swift

@@ -18,6 +18,7 @@ import XCTest
 @available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, macCatalyst 16.0, visionOS 2.0, *)
 final class ARCAPITests: XCTestCase {
 
+    @available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
     func testVectors() throws {
         let data = ARCEncodedTestVector.data(using: .utf8)!
         let decoder = JSONDecoder()
@@ -279,14 +280,24 @@ extension P256._ARCV1.PrivateKey: ARCPrivateKey {}
 extension P256._ARCV1: ARCV1 {}
 extension P256: ARCCurve {}
 
+
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.Precredential: ARCPrecredential {}
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.CredentialRequest: ARCCredentialRequest {}
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.CredentialResponse: ARCCredentialResponse {}
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.Credential: ARCCredential {}
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.Presentation: ARCPresentation {}
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.PublicKey: ARCPublicKey {
     typealias H2G = P384._ARCV1.H2G
 }
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1.PrivateKey: ARCPrivateKey {}
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384._ARCV1: ARCV1 {}
+@available(*, deprecated, message: "ARC(P-384) has been removed from the IETF draft; use ARC(P-256) instead.")
 extension P384: ARCCurve {}