From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Libalpm64 <libalpm@proton.me>
Date: Mon, 2 Mar 2026 00:00:00 +0000
Subject: [PATCH] Secure seed V2 with Blake3


diff --git a/net/minecraft/world/level/levelgen/RandomState.java b/net/minecraft/world/level/levelgen/RandomState.java
index 7b74440fbbe79c018ad59d24b99da0c6d4a9d007..cd81b8e9167cb537b6f880b7d3f0dad15007891e 100644
--- a/net/minecraft/world/level/levelgen/RandomState.java
+++ b/net/minecraft/world/level/levelgen/RandomState.java
@@ -33,10 +33,28 @@ public final class RandomState {
     }
 
     private RandomState(final NoiseGeneratorSettings settings, final HolderGetter<NormalNoise.NoiseParameters> noises, final long seed) {
-        this.random = settings.getRandomSource().newInstance(seed).forkPositional();
+        // this.random = settings.getRandomSource().newInstance(seed).forkPositional(); // Shiroha - Add secure seed V2 with Blake3
+        // Shiroha start - Add secure seed V2 with Blake3
+        final long[] secureWorldSeed = (io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.enabled && io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.version == 2)
+                ? su.plo.matter.HashingV2.expandLevelSeedTo1024Bits(seed)
+                : null;
+
+        long terrainSeed = (io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.enabled && io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.version == 2)
+                ? su.plo.matter.HashingV2.getTerrainSeed(secureWorldSeed, su.plo.matter.HashingV2.TerrainType.BASE_TERRAIN)
+                : seed;
+        long aquiferSeed = (io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.enabled && io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.version == 2)
+                ? su.plo.matter.HashingV2.getTerrainSeed(secureWorldSeed, su.plo.matter.HashingV2.TerrainType.AQUIFER)
+                : seed;
+        long oreSeed = (io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.enabled && io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.version == 2)
+                ? su.plo.matter.HashingV2.getTerrainSeed(secureWorldSeed, su.plo.matter.HashingV2.TerrainType.ORE)
+                : seed;
+        // Shiroha end
+        this.random = settings.getRandomSource().newInstance(terrainSeed).forkPositional(); // Shiroha - Add secure seed V2 with Blake3
         this.noises = noises;
-        this.aquiferRandom = this.random.fromHashOf(Identifier.withDefaultNamespace("aquifer")).forkPositional();
-        this.oreRandom = this.random.fromHashOf(Identifier.withDefaultNamespace("ore")).forkPositional();
+        //this.aquiferRandom = this.random.fromHashOf(Identifier.withDefaultNamespace("aquifer")).forkPositional(); // Shiroha - Add secure seed V2 with Blake3
+        //this.oreRandom = this.random.fromHashOf(Identifier.withDefaultNamespace("ore")).forkPositional(); // Shiroha - Add secure seed V2 with Blake3
+        this.aquiferRandom = settings.getRandomSource().newInstance(aquiferSeed).forkPositional(); // Shiroha - Add secure seed V2 with Blake3
+        this.oreRandom = settings.getRandomSource().newInstance(oreSeed).forkPositional(); // Shiroha - Add secure seed V2 with Blake3
         this.noiseIntances = new ConcurrentHashMap<>();
         this.positionalRandoms = new ConcurrentHashMap<>();
         this.surfaceSystem = new SurfaceSystem(this, settings.defaultBlock(), settings.seaLevel(), this.random);
@@ -46,6 +64,12 @@ public final class RandomState {
             private final Map<DensityFunction, DensityFunction> wrapped = new HashMap<>();
 
             private RandomSource newLegacyInstance(final long seedOffset) {
+                // Shiroha start - Add secure seed V2 with Blake3
+                if (io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.enabled && io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.version == 2) {
+                    long climateSeed = su.plo.matter.HashingV2.getTerrainSeed(secureWorldSeed, su.plo.matter.HashingV2.TerrainType.CLIMATE);
+                    return new su.plo.matter.WorldgenCryptoRandom(0, 0, su.plo.matter.Globals.Salt.UNDEFINED, climateSeed + seed);
+                }
+                // Shiroha end
                 return new LegacyRandomSource(seed + seedOffset);
             }
 
@@ -71,7 +95,13 @@ public final class RandomState {
                         : RandomState.this.random.fromHashOf(Identifier.withDefaultNamespace("terrain"));
                     return noise.withNewRandom(terrainRandom);
                 } else {
-                    return function instanceof DensityFunctions.EndIslandDensityFunction ? new DensityFunctions.EndIslandDensityFunction(seed) : function;
+                    return function instanceof DensityFunctions.EndIslandDensityFunction //? new DensityFunctions.EndIslandDensityFunction(seed)// Shiroha - Add secure seed V2 with Blake3
+                        // Shiroha start - Add secure seed V2 with Blake3
+                        ? new DensityFunctions.EndIslandDensityFunction((io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.enabled && io.nanachiyo0721.shiroha.config.modules.function.SecureSeedConfig.version == 2)
+                        ? su.plo.matter.HashingV2.getTerrainSeed(secureWorldSeed, su.plo.matter.HashingV2.TerrainType.SURFACE)
+                        : seed)
+                        // Shiroha end
+                        : function;
                 }
             }