Encrypt Bytes to Base64-Encoded Encrypted String

Download Chilkat .NET for 2.0 / 3.5 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

C# code to encrypt a byte array and return a Base64-encoded encrypted string.

	// Create an instance of the Chilkat encryption class.
	Chilkat.Crypt2 crypt = new Chilkat.Crypt2(); 

	// Any code begins the 30-day trial.
	crypt.UnlockComponent("30-day-trial"); 

	// Set the encryption algorithm to AES
	crypt.CryptAlgorithm = "aes"; 

	// Set the encryption strength to 256 bits.
	crypt.KeyLength = 256;

	// Set the password
	crypt.SecretKey = crypt.GenerateSecretKey("myPassword"); 

	// Indicate that we want Base-64 output.
	crypt.EncodingMode = "base64";

	// Generate some data to be encrypted.
	byte[] inputByteData = new byte[10]; 
	int i;
	for (i=0; i<10; i++) inputByteData[i] = (byte)(i);

	string encryptedText = crypt.EncryptBytesENC(inputByteData);

	MessageBox.Show(encryptedText);

	byte[] decrypted = crypt.DecryptBytesENC(encryptedText);

	// Display the decrypted bytes as a hexidecimalized string
	crypt.CryptAlgorithm = "none";
	crypt.EncodingMode = "hex";
	MessageBox.Show(crypt.EncryptBytesENC(decrypted));

Important: The download for this example does not contain the ChilkatDotNet.dll which
must be downloaded and installed separately at http://www.chilkatsoft.com/downloads.asp.
Once installed, add a reference to the DLL in the project by following the instructions at
http://www.example-code.com/vbdotnet/step2.asp