public void verify_asimmetric_file_encryption_file_decrypt()
{
var fileName = "TestFiles\\SampleFile.txt";
var encryptedFileName = "TestFiles\\SampleFile.encrypted";
var decryptedFileName = "TestFiles\\SampleFile.decrypted";
if (File.Exists(encryptedFileName))
{
File.Delete(encryptedFileName);
}
var key = EncryptionUtils.GenerateAsimmetricKey();
var publicKey = key.GetPublicKey();
var encryptionKeyAsString = EncryptionUtils.EncryptFile(fileName, encryptedFileName, publicKey);
//now we need to decrypt the key used to encrypt the file
var encryptedKey = EncryptionKey.CreateFromSerializedString(encryptionKeyAsString);
var decryptedKey = EncryptionUtils.Decrypt(key, encryptedKey);
EncryptionUtils.DecryptFile(decryptedKey, encryptedFileName, decryptedFileName);
var decryptedString = File.ReadAllText(decryptedFileName);
Assert.That(decryptedString, Is.EqualTo("This is a sample text file."));
}
public void Verify_basic_key_serialization()
{
var key = EncryptionUtils.GenerateKey();
var serialized = key.SerializeAsString();
var restored = EncryptionKey.CreateFromSerializedString(serialized);
CollectionAssert.AreEqual(key.IV, restored.IV);
CollectionAssert.AreEqual(key.Key, restored.Key);
}
private void DecryptFile(string tempFolder, string keyFile, string encryptedFile, Customer customer)
{
var encryptionKeyString = File.ReadAllText(keyFile);
var encryptedKey = EncryptionKey.CreateFromSerializedString(encryptionKeyString);
var asymmetricKey = AsymmetricEncryptionKey.CreateFromString(customer.PrivateKey, true);
var decryptedKey = EncryptionUtils.Decrypt(asymmetricKey, encryptedKey);
//now we can decrypt
var decryptedFileName = Path.Combine(tempFolder, "decrypted.zip");
EncryptionUtils.DecryptFile(decryptedKey, encryptedFile, decryptedFileName);
Logger.DebugFormat("Decrypted file {0} ", decryptedFileName);
//now we can unzip
ZipFile.ExtractToDirectory(decryptedFileName, tempFolder);
Logger.DebugFormat("Unzipped file {0} ", decryptedFileName);
}
public static Byte[] Decrypt(String key, Byte[] data)
{
return Decrypt(EncryptionKey.CreateFromSerializedString(key), data);
}
public static String Decrypt(String key, String data)
{
return(Decrypt(EncryptionKey.CreateFromSerializedString(key), data));
}