Implemented legacy public key signature

src/main/java/de/florianmichael/viafabricplus/injection/access/IKeyPairResponse.java

@@ -0,0 +1,8 @@
+package de.florianmichael.viafabricplus.injection.access;
+
+import java.nio.ByteBuffer;
+
+public interface IKeyPairResponse {
+
+    ByteBuffer viafabricplus_getLegacyPublicKeySignature();
+}

src/main/java/de/florianmichael/viafabricplus/injection/mixin/fixes/authlib/MixinKeyPairResponse.java

@@ -0,0 +1,20 @@
+package de.florianmichael.viafabricplus.injection.mixin.fixes.authlib;
+
+import com.google.gson.annotations.SerializedName;
+import com.mojang.authlib.yggdrasil.response.KeyPairResponse;
+import de.florianmichael.viafabricplus.injection.access.IKeyPairResponse;
+import org.spongepowered.asm.mixin.Mixin;
+
+import java.nio.ByteBuffer;
+
+@Mixin(KeyPairResponse.class)
+public class MixinKeyPairResponse implements IKeyPairResponse {
+
+    @SerializedName("publicKeySignature")
+    private ByteBuffer viafabricplus_legacyKeySignature;
+
+    @Override
+    public ByteBuffer viafabricplus_getLegacyPublicKeySignature() {
+        return this.viafabricplus_legacyKeySignature;
+    }
+}

src/main/java/de/florianmichael/viafabricplus/injection/mixin/fixes/minecraft/MixinProfileKeysImpl.java

@@ -18,6 +18,7 @@
 package de.florianmichael.viafabricplus.injection.mixin.fixes.minecraft;
 
 import com.mojang.authlib.yggdrasil.response.KeyPairResponse;
+import de.florianmichael.viafabricplus.injection.access.IKeyPairResponse;
 import de.florianmichael.viafabricplus.injection.access.IPublicKeyData;
 import net.minecraft.client.util.ProfileKeysImpl;
 import net.minecraft.network.encryption.PlayerPublicKey;
@@ -31,7 +32,6 @@ public class MixinProfileKeysImpl {
 
     @Inject(method = "decodeKeyPairResponse", at = @At("RETURN"))
     private static void trackLegacyKey(KeyPairResponse keyPairResponse, CallbackInfoReturnable<PlayerPublicKey.PublicKeyData> cir) {
-//        ((IPublicKeyData) (Object) cir.getReturnValue()).viafabricplus_setV1Key(keyPairResponse.getLegacyPublicKeySignature());
+        ((IPublicKeyData) (Object) cir.getReturnValue()).viafabricplus_setV1Key(((IKeyPairResponse) keyPairResponse).viafabricplus_getLegacyPublicKeySignature());
-        // TODO | Track Key
     }
 }

src/main/resources/viafabricplus.mixins.json

@@ -158,7 +158,8 @@
     "fixes.viaversion.protocol1_9to1_8.MixinViaIdleThread",
     "jsonwebtoken.MixinClasses",
     "jsonwebtoken.MixinDefaultCompressionCodecResolver",
-    "jsonwebtoken.MixinDefaultJwtParserBuilder"
+    "jsonwebtoken.MixinDefaultJwtParserBuilder",
+    "fixes.authlib.MixinKeyPairResponse"
   ],
   "injectors": {
     "defaultRequire": 1