public void SymmetricEncryptor_HeavyUsage()
{
CryptoRandomizer random = new CryptoRandomizer();
const int Iterations = 100;
const int MaxMemoryBlock = 100000;
for (int i = 0; i < Iterations; i++)
{
int blockSize = random.Next(MaxMemoryBlock);
byte[] buffer = new ByteGenerator().GenerateBytes(blockSize);
string key = CryptoString.GenerateRandomText(1000);
byte[] decryptedBuffer;
byte[] encryptedBuffer;
using (SymmetricEncryptor encryptor = new SymmetricEncryptor())
{
//Encrypt
encryptedBuffer = encryptor.EncryptBytes(buffer, key);
// Decrypt
decryptedBuffer = encryptor.DecryptBytes(encryptedBuffer, key);
} // IDispose - Closes and clears the keys in memory
// Assert - Check to make sure the bytes are all the same
Assert.IsTrue(buffer.SequenceEqual(decryptedBuffer));
}
}
/// <summary>
/// Decrypts the bytes of the Blob and validates the checksum hash to ensure data integrity
/// </summary>
/// <returns></returns>
public byte[] Decrypt(bool validateChecksum = true)
{
// Validate Encrypted (if flag is set)
if (validateChecksum)
{
ValidateChecksum(_encryptedBytes);
}
// Encrypted Block
byte[] checksumEncrypted = _encryptedBytes.Skip(_encryptedBytes.Length - HashSize).ToArray();
byte[] encryptedBytes = _encryptedBytes.Take(_encryptedBytes.Length - HashSize).ToArray();
// Decrypted Block
byte[] fullDecryptedData = _encryptor.DecryptBytes(encryptedBytes);
byte[] checksumDecrypted = fullDecryptedData.Skip(fullDecryptedData.Length - HashSize).ToArray();
// Validate Decrypted (if flag is set)
if (validateChecksum)
{
ValidateChecksum(fullDecryptedData);
}
// Strip the Checksum and you have your original data
byte[] decryptedBytes = fullDecryptedData.Take(fullDecryptedData.Length - HashSize).ToArray();
return(decryptedBytes);
}
public void SymmetricEncryptor_BasicUsage()
{
// Arrange
int blockSize = 1000;
byte[] buffer = new ByteGenerator().GenerateBytes(blockSize);
string key = "test key";
byte[] decryptedBuffer;
byte[] encryptedBuffer;
using (SymmetricEncryptor encryptor = new SymmetricEncryptor())
{
//Encrypt
encryptedBuffer = encryptor.EncryptBytes(buffer, key);
// Decrypt
decryptedBuffer = encryptor.DecryptBytes(encryptedBuffer, key);
} // IDispose - Closes and clears the keys in memory
// Assert - Check to make sure the bytes are all the same
Assert.IsTrue(buffer.SequenceEqual(decryptedBuffer));
}
