Reply to thread

Message

<blockquote data-quote="EGhewg5" data-source="post: 23715779" data-attributes="member: 567887">Machan me code eka balala improve karaganna dewal thiyanawanam kiyanawada...Mata programming loku danumak naha. String, password wage dewal encrypt karaganna class ekak hada gannayi try karanne.Me code eka gaththa source eka...<a href="https://stackoverflow.com/questions/45567962" target="_blank">https://stackoverflow.com/questions/45567962</a>[CODE]&nbsp; &nbsp; &nbsp; &nbsp; private void Usage()&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string message = &quot;My secret message 1234&quot;;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string password = &quot;3sc3RLrpd17&quot;;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Create sha256 hash&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SHA256 mySHA256 = SHA256Managed.Create();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte[] key = mySHA256.ComputeHash(Encoding.ASCII.GetBytes(password));&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Create secret IV&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte[] iv = new byte[16] { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 };&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //using (var aes = new AesCryptoServiceProvider())&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //{&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //&nbsp;&nbsp; aes.GenerateIV();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //}&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string encrypted = this.EncryptString(message, key, iv);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string decrypted = this.DecryptString(encrypted, key, iv);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Console.WriteLine(encrypted);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Console.WriteLine(decrypted);&nbsp; &nbsp; &nbsp; &nbsp; }[/CODE][CODE]&nbsp; &nbsp; &nbsp; &nbsp; public string EncryptString(string plainText, byte[] key, byte[] iv)&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Instantiate a new Aes object to perform string symmetric encryption&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Aes encryptor = Aes.Create();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; encryptor.Mode = CipherMode.CBC;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Set key and IV&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte[] aesKey = new byte[32];&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Array.Copy(key, 0, aesKey, 0, 32);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; encryptor.Key = aesKey;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; encryptor.IV = iv;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Instantiate a new MemoryStream object to contain the encrypted bytes&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MemoryStream memoryStream = new MemoryStream();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Instantiate a new encryptor from our Aes object&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ICryptoTransform aesEncryptor = encryptor.CreateEncryptor();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Instantiate a new CryptoStream object to process the data and write it to the &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // memory stream&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; CryptoStream cryptoStream = new CryptoStream(memoryStream, aesEncryptor, CryptoStreamMode.Write);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Convert the plainText string into a byte array&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte[] plainBytes = Encoding.ASCII.GetBytes(plainText);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Encrypt the input plaintext string&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cryptoStream.Write(plainBytes, 0, plainBytes.Length);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Complete the encryption process&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cryptoStream.FlushFinalBlock();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Convert the encrypted data from a MemoryStream to a byte array&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte[] cipherBytes = memoryStream.ToArray();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Close both the MemoryStream and the CryptoStream&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; memoryStream.Close();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cryptoStream.Close();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Convert the encrypted byte array to a base64 encoded string&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string cipherText = Convert.ToBase64String(cipherBytes, 0, cipherBytes.Length);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Return the encrypted data as a string&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return cipherText;&nbsp; &nbsp; &nbsp; &nbsp; }[/CODE][CODE]&nbsp; &nbsp; &nbsp; &nbsp; public string DecryptString(string cipherText, byte[] key, byte[] iv)&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Instantiate a new Aes object to perform string symmetric encryption&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Aes encryptor = Aes.Create();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; encryptor.Mode = CipherMode.CBC;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Set key and IV&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte[] aesKey = new byte[32];&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Array.Copy(key, 0, aesKey, 0, 32);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; encryptor.Key = aesKey;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; encryptor.IV = iv;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Instantiate a new MemoryStream object to contain the encrypted bytes&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MemoryStream memoryStream = new MemoryStream();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Instantiate a new encryptor from our Aes object&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ICryptoTransform aesDecryptor = encryptor.CreateDecryptor();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Instantiate a new CryptoStream object to process the data and write it to the &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // memory stream&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; CryptoStream cryptoStream = new CryptoStream(memoryStream, aesDecryptor, CryptoStreamMode.Write);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Will contain decrypted plaintext&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string plainText = String.Empty;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; try&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Convert the ciphertext string into a byte array&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte[] cipherBytes = Convert.FromBase64String(cipherText);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Decrypt the input ciphertext string&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cryptoStream.Write(cipherBytes, 0, cipherBytes.Length);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Complete the decryption process&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cryptoStream.FlushFinalBlock();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Convert the decrypted data from a MemoryStream to a byte array&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte[] plainBytes = memoryStream.ToArray();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Convert the decrypted byte array to string&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; plainText = Encoding.ASCII.GetString(plainBytes, 0, plainBytes.Length);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; finally&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Close both the MemoryStream and the CryptoStream&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; memoryStream.Close();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cryptoStream.Close();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Return the decrypted data as a string&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return plainText;&nbsp; &nbsp; &nbsp; &nbsp; }[/CODE]</blockquote>

[QUOTE="EGhewg5, post: 23715779, member: 567887"] Machan me code eka balala improve karaganna dewal thiyanawanam kiyanawada... Mata programming loku danumak naha. String, password wage dewal encrypt karaganna class ekak hada gannayi try karanne. Me code eka gaththa source eka... [url]https://stackoverflow.com/questions/45567962[/url] [CODE] private void Usage() { string message = "My secret message 1234"; string password = "3sc3RLrpd17"; // Create sha256 hash SHA256 mySHA256 = SHA256Managed.Create(); byte[] key = mySHA256.ComputeHash(Encoding.ASCII.GetBytes(password)); // Create secret IV byte[] iv = new byte[16] { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 }; //using (var aes = new AesCryptoServiceProvider()) //{ // aes.GenerateIV(); //} string encrypted = this.EncryptString(message, key, iv); string decrypted = this.DecryptString(encrypted, key, iv); Console.WriteLine(encrypted); Console.WriteLine(decrypted); } [/CODE] [CODE] public string EncryptString(string plainText, byte[] key, byte[] iv) { // Instantiate a new Aes object to perform string symmetric encryption Aes encryptor = Aes.Create(); encryptor.Mode = CipherMode.CBC; // Set key and IV byte[] aesKey = new byte[32]; Array.Copy(key, 0, aesKey, 0, 32); encryptor.Key = aesKey; encryptor.IV = iv; // Instantiate a new MemoryStream object to contain the encrypted bytes MemoryStream memoryStream = new MemoryStream(); // Instantiate a new encryptor from our Aes object ICryptoTransform aesEncryptor = encryptor.CreateEncryptor(); // Instantiate a new CryptoStream object to process the data and write it to the // memory stream CryptoStream cryptoStream = new CryptoStream(memoryStream, aesEncryptor, CryptoStreamMode.Write); // Convert the plainText string into a byte array byte[] plainBytes = Encoding.ASCII.GetBytes(plainText); // Encrypt the input plaintext string cryptoStream.Write(plainBytes, 0, plainBytes.Length); // Complete the encryption process cryptoStream.FlushFinalBlock(); // Convert the encrypted data from a MemoryStream to a byte array byte[] cipherBytes = memoryStream.ToArray(); // Close both the MemoryStream and the CryptoStream memoryStream.Close(); cryptoStream.Close(); // Convert the encrypted byte array to a base64 encoded string string cipherText = Convert.ToBase64String(cipherBytes, 0, cipherBytes.Length); // Return the encrypted data as a string return cipherText; } [/CODE] [CODE] public string DecryptString(string cipherText, byte[] key, byte[] iv) { // Instantiate a new Aes object to perform string symmetric encryption Aes encryptor = Aes.Create(); encryptor.Mode = CipherMode.CBC; // Set key and IV byte[] aesKey = new byte[32]; Array.Copy(key, 0, aesKey, 0, 32); encryptor.Key = aesKey; encryptor.IV = iv; // Instantiate a new MemoryStream object to contain the encrypted bytes MemoryStream memoryStream = new MemoryStream(); // Instantiate a new encryptor from our Aes object ICryptoTransform aesDecryptor = encryptor.CreateDecryptor(); // Instantiate a new CryptoStream object to process the data and write it to the // memory stream CryptoStream cryptoStream = new CryptoStream(memoryStream, aesDecryptor, CryptoStreamMode.Write); // Will contain decrypted plaintext string plainText = String.Empty; try { // Convert the ciphertext string into a byte array byte[] cipherBytes = Convert.FromBase64String(cipherText); // Decrypt the input ciphertext string cryptoStream.Write(cipherBytes, 0, cipherBytes.Length); // Complete the decryption process cryptoStream.FlushFinalBlock(); // Convert the decrypted data from a MemoryStream to a byte array byte[] plainBytes = memoryStream.ToArray(); // Convert the decrypted byte array to string plainText = Encoding.ASCII.GetString(plainBytes, 0, plainBytes.Length); } finally { // Close both the MemoryStream and the CryptoStream memoryStream.Close(); cryptoStream.Close(); } // Return the decrypted data as a string return plainText; } [/CODE] [/QUOTE]

Verification

Dawasata paya keeyak thibeda?

Search

Latest ads

Reply to thread