Encryption-Encryption between the Ruby Network and Dot

Question

I need the pure network equivalent of the following code. The thing is, I am encrypting using Ruby on the client side, here is the code. The encoded string will be passed to the C # web service. This should decrypt the string.

If someone can provide the point equivalent of this code, then that would be helpful.

require 'rubygems' require 'ezcrypto' require 'crypt/rijndael' plaintext = '24.9195N 17.821E' aes_key = Crypt::Rijndael.new('0123456789abcdef0123456789abcdef') aes_cyphertext = aes_key.encrypt_string(plaintext) print "\n" print aes_cyphertext +"\n" print Base64.encode64(aes_cyphertext) print "\n" print aes_key.decrypt_string(aes_cyphertext) print "\n" 

Answer 1

It will be something like this code shown below as unit test. The first part does the encryption - the second half does the decryption.

Paste the code into the new MSTest unit test (create a new test project or add it to an existing one).

The key and iv are what you will need to install accordingly.

 //needed to convert from hex string public static byte[] FromHexString(string hexString) { int NumberChars = hexString.Length; byte[] bytes = new byte[NumberChars / 2]; for (int i = 0; i < NumberChars; i += 2) bytes[i / 2] = Convert.ToByte(hexString.Substring(i, 2), 16); return bytes; } [TestMethod] public void Test() { string toEncryptString = "24.9195N 17.821E"; //initialise key and IV (note - all zero IV is not recommended!) byte[] key = FromHexString("0123456789abcdef0123456789abcdef"); byte[] iv = FromHexString("00000000000000000000000000000000"); byte[] toEncrypt = System.Text.Encoding.UTF8.GetBytes(toEncryptString); byte[] cipherBytes = null; string cipherText = null; //encrypt using (System.Security.Cryptography.Rijndael r = new RijndaelManaged()) { r.Key = key; r.IV = iv; using(System.Security.Cryptography.ICryptoTransform transform = r.CreateEncryptor()) { using (var mStream = new System.IO.MemoryStream()) { using (var cStream = new CryptoStream(mStream, transform, CryptoStreamMode.Write)) { cStream.Write(toEncrypt, 0, toEncrypt.Length); cStream.FlushFinalBlock(); cipherBytes = mStream.ToArray(); cipherText = Convert.ToBase64String(cipherBytes); } } } } //decrypt byte[] toDecrypt = Convert.FromBase64String(cipherText); string decryptedString = null; using (System.Security.Cryptography.Rijndael r = new RijndaelManaged()) { r.Key = key; r.IV = iv; using(System.Security.Cryptography.ICryptoTransform transform2 = r.CreateDecryptor()) // <-- difference here { using (var mStream2 = new System.IO.MemoryStream()) { using (var cStream2 = new CryptoStream(mStream2, transform2, CryptoStreamMode.Write)) { cStream2.Write(toDecrypt, 0, toDecrypt.Length); cStream2.FlushFinalBlock(); decryptedString = System.Text.Encoding.UTF8.GetString(mStream2.ToArray()); } } } } Assert.AreEqual(toEncryptString, decryptedString); }