public void TEST_DECRYPT()
{
ISimpleStreamEncryption crypto = new DESStreamEncryption();
String key = String.Empty;
String iv = String.Empty;
String decryptedText = String.Empty;
using (FileStream fs = new FileStream(_keyFileName, FileMode.Open, FileAccess.Read))
{
using (StreamReader sr = new StreamReader(fs))
{
key = sr.ReadToEnd();
}
}
Assert.AreNotEqual(String.Empty, key);
using (FileStream fs = new FileStream(_IVFileName, FileMode.Open, FileAccess.Read))
{
using (StreamReader sr = new StreamReader(fs))
{
iv = sr.ReadToEnd();
}
}
Assert.AreNotEqual(String.Empty, iv);
using(FileStream fs = new FileStream(encrypt_name, FileMode.Open, FileAccess.Read) ){
using (Stream decryptStream = crypto.DecryptStream(fs, key, iv))
{
MemoryStream ms = new MemoryStream();
decryptStream.CopyTo(ms);
decryptedText = Encoding.ASCII.GetString(ms.ToArray());
Assert.AreEqual(_testTextFileContents, decryptedText);
}
}
}
public void TEST_ENCRYPT()
{
using (FileStream fs = new FileStream(file_name, FileMode.Create, FileAccess.ReadWrite))
{
using (StreamWriter sw = new StreamWriter(fs))
{
sw.Write(_testTextFileContents);
Assert.IsTrue(File.Exists(file_name));
}
}
ISimpleStreamEncryption crypto = new DESStreamEncryption();
String key = crypto.GetKey();
String iv = crypto.GetIV();
using (FileStream fs = new FileStream(_keyFileName, FileMode.Create, FileAccess.ReadWrite))
{
using (StreamWriter sw = new StreamWriter(fs))
{
sw.Write(key);
Assert.IsTrue(File.Exists(_keyFileName));
}
}
using (FileStream fs = new FileStream(_IVFileName, FileMode.Create, FileAccess.ReadWrite))
{
using (StreamWriter sw = new StreamWriter(fs))
{
sw.Write(iv);
Assert.IsTrue(File.Exists(_IVFileName));
}
}
using (MemoryStream ms = new MemoryStream(Encoding.ASCII.GetBytes(_testTextFileContents)))
{
using (Stream encryptedStream = crypto.EncryptStream(ms, key, iv))
{
encryptedStream.Seek(0, SeekOrigin.Begin);
MemoryStream eMS = new MemoryStream();
encryptedStream.CopyTo(eMS);
// On the fly decryption test!
String decryptedText = String.Empty;
using( Stream decryptedStream = crypto.DecryptStream(eMS, key, iv) ){
MemoryStream dMS = new MemoryStream();
decryptedStream.CopyTo(dMS);
decryptedText = Encoding.ASCII.GetString(dMS.ToArray());
Assert.AreEqual(_testTextFileContents, decryptedText);
}
encryptedStream.Seek(0, SeekOrigin.Begin);
using(FileStream fs = new FileStream(encrypt_name, FileMode.Create, FileAccess.Write ) ){
encryptedStream.CopyTo(fs);
}
}
}
}