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main: Attempted to add seed phrase decryption
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@ -14,6 +14,7 @@ using DnsClient;
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using DnsClient.Protocol;
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using System.Security.Cryptography.X509Certificates;
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using System.Net.Security;
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using System.Numerics;
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namespace FireWallet
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{
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@ -686,6 +687,7 @@ namespace FireWallet
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toolStripStatusLabelLedger.Text = "Cold Wallet";
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toolStripStatusLabelLedger.Visible = true;
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buttonRevealAll.Visible = false;
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buttonSeed.Enabled = false;
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}
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else
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@ -693,6 +695,7 @@ namespace FireWallet
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watchOnly = false;
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toolStripStatusLabelLedger.Visible = false;
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buttonRevealAll.Visible = true;
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buttonSeed.Enabled = true;
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}
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@ -864,7 +867,6 @@ namespace FireWallet
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{
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AddLog("Post Error: " + ex.Message);
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AddLog(await resp.Content.ReadAsStringAsync());
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AddLog("Content: " + content);
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return "Error";
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}
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@ -2175,6 +2177,8 @@ namespace FireWallet
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try
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{
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AddLog("Decrypting seed...");
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AddLog(resp.ToString());
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string iv = resp["iv"].ToString();
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string ciphertext = resp["ciphertext"].ToString();
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string tmpn = resp["n"].ToString();
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@ -2183,9 +2187,26 @@ namespace FireWallet
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int n = int.Parse(tmpn);
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int p = int.Parse(tmpp);
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int r = int.Parse(tmpr);
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int iterations = n;
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byte[] decripted = await Decrypt_Seed(algorithm, ciphertext, iv, n,r,p);
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// This is returning garbled text
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AddLog("Seed decrypted");
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string phrase = Encoding.UTF8.GetString(decripted);
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AddLog("Your seed phrase is:\n" + phrase);
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phrase = Encoding.ASCII.GetString(decripted);
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AddLog("Your seed phrase is:\n" + phrase);
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phrase = Encoding.Unicode.GetString(decripted);
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AddLog("Your seed phrase is:\n" + phrase);
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}
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catch (Exception ex)
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@ -2200,7 +2221,71 @@ namespace FireWallet
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}
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}
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private async Task<byte[]> Decrypt_Seed(string algorithm, string ciphertext, string iv, int n,int r, int p)
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{
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byte[] salt = Encoding.ASCII.GetBytes("hsd");
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using (AesManaged aes = new AesManaged())
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{
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aes.Key = DeriveKey(algorithm, password, salt, n, r, p);
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aes.IV = HexStringToByteArray(iv);
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aes.Mode = CipherMode.CBC;
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aes.Padding = PaddingMode.None;
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byte[] cipher = HexStringToByteArray(ciphertext);
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if (cipher.Length % 16 != 0)
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{
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AddLog("Invalid cipher length");
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return null;
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}
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using (ICryptoTransform decryptor = aes.CreateDecryptor())
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{
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byte[] decrypted = decryptor.TransformFinalBlock(cipher, 0, cipher.Length);
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return decrypted;
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}
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}
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}
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static byte[] HexStringToByteArray(string hex)
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{
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int numberChars = hex.Length / 2;
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byte[] bytes = new byte[numberChars];
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for (int i = 0; i < numberChars; i++)
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{
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bytes[i] = Convert.ToByte(hex.Substring(i * 2, 2), 16);
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}
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return bytes;
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}
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byte[] DeriveKey(string algorithm, string passphrase, byte[] salt, int n, int r, int p)
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{
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byte[] passwordBytes = Encoding.UTF8.GetBytes(passphrase);
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switch (algorithm)
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{
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case "pbkdf2":
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return Pbkdf2DeriveKey(passwordBytes, salt, n, 32);
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case "scrypt":
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return ScryptDeriveKey(passwordBytes, salt, n, r, p, 32);
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default:
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throw new Exception($"Unknown algorithm: {algorithm}.");
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}
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}
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static byte[] Pbkdf2DeriveKey(byte[] password, byte[] salt, int iterations, int derivedKeyLength)
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{
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using (Rfc2898DeriveBytes pbkdf2 = new Rfc2898DeriveBytes(password, salt, iterations))
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{
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return pbkdf2.GetBytes(derivedKeyLength);
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}
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}
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static byte[] ScryptDeriveKey(byte[] password, byte[] salt, int costParameterN, int costParameterR, int costParameterP, int derivedKeyLength)
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{
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using (var rfc2898 = new Rfc2898DeriveBytes(password, salt, costParameterN, HashAlgorithmName.SHA256))
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{
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return rfc2898.GetBytes(derivedKeyLength);
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}
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}
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private async void Rescan_Click(object sender, EventArgs e)
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{
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string content = "{\"height\": 0}";
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