scripts

2026-06-04 11:42:34 +02:00
parent f39ba70a9f
commit e720b98cd1
7488 changed files with 2493818 additions and 0 deletions
@@ -0,0 +1,46 @@
+using System;
+using System.Security.Cryptography;
+using ICSharpCode.SharpZipLib.Checksums;
+
+namespace ICSharpCode.SharpZipLib.Encryption
+{
+	// Token: 0x02000020 RID: 32
+	public abstract class PkzipClassic : SymmetricAlgorithm
+	{
+		// Token: 0x060000E0 RID: 224 RVA: 0x00007A8C File Offset: 0x00006A8C
+		public static byte[] GenerateKeys(byte[] seed)
+		{
+			if (seed == null)
+			{
+				throw new ArgumentNullException("seed");
+			}
+			if (seed.Length == 0)
+			{
+				throw new ArgumentException("Length is zero", "seed");
+			}
+			uint[] array = new uint[] { 305419896U, 591751049U, 878082192U };
+			for (int i = 0; i < seed.Length; i++)
+			{
+				array[0] = Crc32.ComputeCrc32(array[0], seed[i]);
+				array[1] = array[1] + (uint)((byte)array[0]);
+				array[1] = array[1] * 134775813U + 1U;
+				array[2] = Crc32.ComputeCrc32(array[2], (byte)(array[1] >> 24));
+			}
+			return new byte[]
+			{
+				(byte)(array[0] & 255U),
+				(byte)((array[0] >> 8) & 255U),
+				(byte)((array[0] >> 16) & 255U),
+				(byte)((array[0] >> 24) & 255U),
+				(byte)(array[1] & 255U),
+				(byte)((array[1] >> 8) & 255U),
+				(byte)((array[1] >> 16) & 255U),
+				(byte)((array[1] >> 24) & 255U),
+				(byte)(array[2] & 255U),
+				(byte)((array[2] >> 8) & 255U),
+				(byte)((array[2] >> 16) & 255U),
+				(byte)((array[2] >> 24) & 255U)
+			};
+		}
+	}
+}