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Code Issues Releases Activity

[ci skip] cleanup

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This commit is contained in:
Dreeam
2025-01-30 16:03:24 -05:00
parent df28582c38
commit 47847ebd51
75 changed files with 396 additions and 405 deletions
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1
leaf-server/src/main/java/su/plo/matter/Globals.java
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@@ -8,6 +8,7 @@ import java.security.SecureRandom;
import java.util.Optional;
public class Globals {
public static final int WORLD_SEED_LONGS = 16;
public static final int WORLD_SEED_BITS = WORLD_SEED_LONGS * 64;

31
leaf-server/src/main/java/su/plo/matter/Hashing.java
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@@ -1,28 +1,29 @@
package su.plo.matter;
public class Hashing {
// https://en.wikipedia.org/wiki/BLAKE_(hash_function)
// https://github.com/bcgit/bc-java/blob/master/core/src/main/java/org/bouncycastle/crypto/digests/Blake2bDigest.java
private final static long[] blake2b_IV = {
0x6a09e667f3bcc908L, 0xbb67ae8584caa73bL, 0x3c6ef372fe94f82bL,
0xa54ff53a5f1d36f1L, 0x510e527fade682d1L, 0x9b05688c2b3e6c1fL,
0x1f83d9abfb41bd6bL, 0x5be0cd19137e2179L
0x6a09e667f3bcc908L, 0xbb67ae8584caa73bL, 0x3c6ef372fe94f82bL,
0xa54ff53a5f1d36f1L, 0x510e527fade682d1L, 0x9b05688c2b3e6c1fL,
0x1f83d9abfb41bd6bL, 0x5be0cd19137e2179L
};
private final static byte[][] blake2b_sigma = {
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3},
{11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4},
{7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8},
{9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13},
{2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9},
{12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11},
{13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10},
{6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5},
{10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0},
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3}
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3},
{11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4},
{7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8},
{9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13},
{2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9},
{12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11},
{13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10},
{6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5},
{10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0},
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3}
};
public static long[] hashWorldSeed(long[] worldSeed) {

3
leaf-server/src/main/java/su/plo/matter/WorldgenCryptoRandom.java
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@@ -9,6 +9,7 @@ import org.jetbrains.annotations.NotNull;
import java.util.Arrays;
public class WorldgenCryptoRandom extends WorldgenRandom {
// hash the world seed to guard against badly chosen world seeds
private static final long[] HASHED_ZERO_SEED = Hashing.hashWorldSeed(new long[Globals.WORLD_SEED_LONGS]);
private static final ThreadLocal<long[]> LAST_SEEN_WORLD_SEED = ThreadLocal.withInitial(() -> new long[Globals.WORLD_SEED_LONGS]);
@@ -33,7 +34,7 @@ public class WorldgenCryptoRandom extends WorldgenRandom {
public void setSecureSeed(int x, int z, Globals.Salt typeSalt, long salt) {
System.arraycopy(Globals.worldSeed, 0, this.worldSeed, 0, Globals.WORLD_SEED_LONGS);
message[0] = ((long) x << 32) | ((long) z & 0xffffffffL);
message[1] = ((long) Globals.dimension.get() << 32) | ((long) salt & 0xffffffffL);
message[1] = ((long) Globals.dimension.get() << 32) | (salt & 0xffffffffL);
message[2] = typeSalt.ordinal();
message[3] = counter = 0;
randomBitIndex = MAX_RANDOM_BIT_INDEX;