public static void Test()
{
Console.Out.WriteLine("Begin Example_060.");
// Create the AES Service
AESService aes = new AESService();
string password = "******";
SecureRandom random = new SecureRandom();
byte[] salt = new byte[AESService.SALT_SIZE];
random.NextBytes(salt);
// Create the AES Key using password and salt.
aes.GenerateKey(password, salt);
// Encode and Decode a string then compare to verify they are the same.
string clear_text = "This is a test";
byte[] enc_bytes = aes.Encode(UTF8Encoding.UTF8.GetBytes(clear_text));
byte[] dec_bytes = aes.Decode(enc_bytes);
string dec_text = UTF8Encoding.UTF8.GetString(dec_bytes);
/**
* Compare the original and decrypted files.
*/
if (Compare.SafeEquals(UTF8Encoding.UTF8.GetBytes(clear_text), UTF8Encoding.UTF8.GetBytes(dec_text)))
{
Console.Out.WriteLine("Original and Decrypted are the same!");
}
else
{
Console.Out.WriteLine("Original and Decrypted are NOT the same!");
}
Console.Out.WriteLine("End Example_060.");
}
public void TestGetAesKey()
{
Console.Out.WriteLine("getAesKey");
AESService instance = new AESService();
instance.GenerateKey();
byte[] result = instance.GetAesKey();
Assert.IsNotNull(result);
}
public void TestGenerateSalt()
{
Console.Out.WriteLine("generateSalt");
AESService instance = new AESService();
byte[] saltBytes = instance.GenerateSalt();
WriteSaltBytes(saltBytes);
Assert.IsNotNull(saltBytes);
}
public static void Test()
{
Console.Out.WriteLine("Begin Example_030.");
// Create some data to test with.
Support.TestData(TESTDATA_FILE);
/**
* Create a 256-bit AES key. AES keys are synchronous. One key can both
* encrypt and decrypt data.
*/
Console.Out.WriteLine("Begin Create AES Key.");
AESService aes = new AESService();
aes.GenerateKey();
Console.Out.WriteLine("End Create AES Key.");
/**
* Use AES key to encrypt a file stream directly to another file stream.
*/
Console.Out.WriteLine("Begin Encrypt Data.");
using (FileStream outstream = new FileStream(TESTDATA_ENC_FILE, FileMode.Create),
instream = new FileStream(TESTDATA_FILE, FileMode.Open))
{
aes.Encode(instream, outstream);
}
Console.Out.WriteLine("End Encrypt Data.");
/**
* Now decrypt the encrypted file using the same AES key.
*/
Console.Out.WriteLine("Begin Decrypt Data.");
using (FileStream outstream = new FileStream(TESTDATA_DEC_FILE, FileMode.Create),
instream = new FileStream(TESTDATA_ENC_FILE, FileMode.Open))
{
aes.Decode(instream, outstream);
}
Console.Out.WriteLine("End Decrypt Data.");
/**
* Compare the original and decrypted files.
*/
string shaOriginal = DigestSHA.Sha256(new FileStream(TESTDATA_FILE, FileMode.Open));
string shaDecripted = DigestSHA.Sha256(new FileStream(TESTDATA_DEC_FILE, FileMode.Open));
if (Compare.SafeEquals(UTF8Encoding.UTF8.GetBytes(shaOriginal), UTF8Encoding.UTF8.GetBytes(shaDecripted)))
{
Console.Out.WriteLine("Encrypted and decrypted files are the same.");
}
else
{
Console.Out.WriteLine("Encrypted and decrypted files are NOT the same.");
}
Console.Out.WriteLine("End Example_030.");
}
public void TestGetHmac256Digest()
{
Console.Out.WriteLine("getHmac256Digest");
// Need to use a hard coded salt so we get a predictable result from getHmac256Digest().
string saltString = "253a3dd3a9aef71ca1fa2b8b3704d6724ba474342e3c2e4fd124ee74d2c56017f4a7c22951a99978c6fdfbbefb4cf775d5642ea6dcb4d9b8e164fc23099f36c4";
byte[] saltBytes = Hex.Decode(saltString);
AESService instance = new AESService();
instance.GenerateKey(password, saltBytes);
String result = DigestSHA.Sha512(msgBytes);
String expResult = "25296335d88536dddd09ffb7bcc09646dd9b3f537beb78cf89c76077d39daedd0cb8e46cf1e9b06a99e59e5b8b7f66f307978dc6413426b13d1f724a0a030529";
Assert.IsTrue(expResult == result);
}
public void TestGenerateKey_String_byteArr()
{
Console.Out.WriteLine("generateKey");
byte[] saltBytes = ReadSaltBytes();
AESService instance = new AESService();
instance.GenerateKey(password, saltBytes);
byte[] aes_key = instance.GetAesKey();
Assert.IsNotNull(aes_key);
}
public void TestEncodeAndDecode_InputStream_OutputStream()
{
Console.Out.WriteLine("encode and decode stream");
byte[] saltBytes = ReadSaltBytes();
AESService instance = new AESService();
instance.GenerateKey(password, saltBytes);
byte[] decData;
byte[] encData;
using (MemoryStream outstream = new MemoryStream())
{
using (MemoryStream instream = new MemoryStream(msgBytes))
{
instance.Encode(instream, outstream);
}
encData = outstream.ToArray();
decData = instance.Decode(encData);
Boolean bCompare = Compare.SafeEquals(msgBytes, decData);
Assert.IsTrue(bCompare);
}
using (MemoryStream outstream = new MemoryStream())
{
using (MemoryStream instream = new MemoryStream(encData))
{
instance.Decode(instream, outstream);
}
decData = outstream.ToArray();
Boolean bCompare = Compare.SafeEquals(msgBytes, decData);
Assert.IsTrue(bCompare);
}
}
public void TestEncodeAndDecode_String()
{
Console.Out.WriteLine("encode and decode byte string");
byte[] saltBytes = ReadSaltBytes();
AESService instance = new AESService();
instance.GenerateKey(password, saltBytes);
byte[] encData = instance.Encode(msgString);
string encString = Hex.Encode(encData);
byte[] decData = instance.Decode(encString);
Boolean bCompare = Compare.SafeEquals(msgBytes, decData);
Assert.IsTrue(bCompare);
}