/// <summary>
/// Creates a clone of this BioInspiredKey object.
/// </summary>
/// <returns>
/// A new BioInspiredKey object whose values are
/// copied from the calling object.
/// </returns>
public BioInspiredKey Clone()
{
BioInspiredKey clone = new BioInspiredKey(
mu1, x01, mu2, x02, mu3, x03, mu4, x04, SecretImage);
return(clone);
}
/// <summary>
/// Generates a new random key that is within the valid keyspace
/// with a randomly generated secret image.
/// </summary>
/// <param name="secretImageWidth">
/// The width in pixels for the generated secret image.
/// </param>
/// <param name="secretImageHeight">
/// The height in pixels for the generated secret image.
/// </param>
/// <returns>
/// A new BioInspiredKey object whose values are within the
/// correct logistic map keyspace for chaos and a randomly
/// generated secret image.
/// </returns>
public static BioInspiredKey Generate(
int secretImageWidth, int secretImageHeight)
{
BioInspiredKey newKey = Generate();
newKey.SecretImage = ImageEncryption.GenerateSecretImage(
secretImageWidth, secretImageHeight);
return(newKey);
}
/// <summary>
/// Generates a new random key that is within the valid keyspace.
/// </summary>
/// <returns>
/// A new BioInspiredKey object whose values are within the
/// correct logistic map keyspace.
/// </returns>
public static BioInspiredKey Generate()
{
Random rand = new Random();
double scalar = (4.0 - 3.569955672);
BioInspiredKey newKey = new BioInspiredKey(
(scalar * rand.NextDouble()) + 3.569955672, // mu1
rand.NextDouble(), // x01
(scalar * rand.NextDouble()) + 3.569955672, // mu2
rand.NextDouble(), // x02
(scalar * rand.NextDouble()) + 3.569955672, // mu3
rand.NextDouble(), // x03
(scalar * rand.NextDouble()) + 3.569955672, // mu4
rand.NextDouble()); // x04
return(newKey);
}
/// <summary>
/// Full initialization constructor.
/// </summary>
/// <param name="plaintextImage">
/// The image that is to be encrypted.
/// </param>
/// <param name="key">
/// The BioInspiredKey object that is used to encrypt the image.
/// </param>
public BioInspiredEncryptor(Bitmap plaintextImage, BioInspiredKey key)
{
PlaintextImage = (Bitmap)plaintextImage.Clone();
Key = key.Clone();
}
/// <summary>
/// Basic initialization constructor with a predefined plaintext image.
/// </summary>
/// <param name="plaintextImage">
/// The image that will be encrypted once a key is defined.
/// </param>
public BioInspiredEncryptor(Bitmap plaintextImage)
: this(plaintextImage, BioInspiredKey.Generate())
{
}
/// <summary>
/// Basic constructor with a predefined key.
/// </summary>
/// <param name="key">
/// The BioInspiredKey object that will be used by the cryptosystem.
/// </param>
public BioInspiredEncryptor(BioInspiredKey key)
: this(null, key)
{
}