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POHow do I remove .net CryptoStream padding
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copied!<p>When I use the following class the output is padded. </p> <pre><code>public static string EncryptString(string ClearText) { byte[] clearTextBytes = Encoding.UTF8.GetBytes(ClearText); System.Security.Cryptography.SymmetricAlgorithm rijn = SymmetricAlgorithm.Create(); MemoryStream ms = new MemoryStream(); byte[] rgbIV = Encoding.ASCII.GetBytes("ryojvlzmdalyglrj"); byte[] key = Encoding.ASCII.GetBytes("hcxilkqbbhczfeultgbskdmaunivmfuo"); CryptoStream cs = new CryptoStream(ms, rijn.CreateEncryptor(key, rgbIV), CryptoStreamMode.Write); cs.Write(clearTextBytes, 0, clearTextBytes.Length); cs.Close(); return Convert.ToBase64String(ms.ToArray()); } public static string DecryptString(string EncryptedText) { byte[] encryptedTextBytes = Convert.FromBase64String(EncryptedText); MemoryStream ms = new MemoryStream(); System.Security.Cryptography.SymmetricAlgorithm rijn = SymmetricAlgorithm.Create(); rijn.Mode = CipherMode.CFB; byte[] rgbIV = Encoding.ASCII.GetBytes("ryojvlzmdalyglrj"); byte[] key = Encoding.ASCII.GetBytes("hcxilkqbbhczfeultgbskdmaunivmfuo"); ; CryptoStream cs = new CryptoStream(ms, rijn.CreateDecryptor(key, rgbIV), CryptoStreamMode.Write); cs.Write(encryptedTextBytes, 0, encryptedTextBytes.Length); cs.Close(); return Encoding.UTF8.GetString(ms.ToArray()); } </code></pre> <p>I understood from another post that there is </p> <pre><code>rijn.Padding = PaddingMode.None; </code></pre> <p>When I added this I get an error that says "Length of the data to encrypt is invalid"</p> <p>Even when I try to encrypt a 6 byte string then I see get a long result. </p> <pre><code>var def1 = Encrypt.EncryptString("abcdefg"); </code></pre> <p>gives me 24 bytes!</p> <p>Can someone give me some advice here.</p> <p>UPDATE</p> <p>Changed to the following:</p> <pre><code> byte[] bytOut = ms.GetBuffer(); int i = 0; for (i = 0; i < bytOut.Length; i++) if (bytOut[i] == 0) break; // convert into Base64 so that the result can be used in xml return System.Convert.ToBase64String(bytOut, 0, i); </code></pre> <p>When I check bytOut it's 16bytes Then the value returned after ToBase64 is 24 bytes. I am still not sure why the size is so large</p>

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