initial commit

2026-08-27 10:55:23 -06:00
commit d03dc0bce1
356 changed files with 18535 additions and 0 deletions
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+using System;
+using System.Security.Cryptography;
+
+namespace Intelix.Helper.Hashing;
+
+public class PBE
+{
+	private byte[] Ciphertext { get; }
+
+	private byte[] GlobalSalt { get; }
+
+	private byte[] MasterPass { get; }
+
+	private byte[] EntrySalt { get; }
+
+	private byte[] PartIv { get; }
+
+	public PBE(byte[] ciphertext, byte[] globalSalt, byte[] masterPassword, byte[] entrySalt, byte[] partIv)
+	{
+		Ciphertext = ciphertext;
+		GlobalSalt = globalSalt;
+		MasterPass = masterPassword;
+		EntrySalt = entrySalt;
+		PartIv = partIv;
+	}
+
+	public byte[] Compute()
+	{
+		byte[] array = new byte[GlobalSalt.Length + MasterPass.Length];
+		Buffer.BlockCopy(GlobalSalt, 0, array, 0, GlobalSalt.Length);
+		Buffer.BlockCopy(MasterPass, 0, array, GlobalSalt.Length, MasterPass.Length);
+		byte[] password = new SHA1Managed().ComputeHash(array);
+		byte[] array2 = new byte[2] { 4, 14 };
+		byte[] array3 = new byte[array2.Length + PartIv.Length];
+		Buffer.BlockCopy(array2, 0, array3, 0, array2.Length);
+		Buffer.BlockCopy(PartIv, 0, array3, array2.Length, PartIv.Length);
+		byte[] bytes = new PBKDF2(new HMACSHA256(), password, EntrySalt, 1).GetBytes(32);
+		return new AesManaged
+		{
+			Mode = CipherMode.CBC,
+			BlockSize = 128,
+			KeySize = 256,
+			Padding = PaddingMode.Zeros
+		}.CreateDecryptor(bytes, array3).TransformFinalBlock(Ciphertext, 0, Ciphertext.Length);
+	}
+}