public void Decrypt_Plaintext()
{
// Get the bytes of the string "Key". This will be the decryption key
// that we use.
byte[] key = Encoding.ASCII.GetBytes("Key");
byte[] data = (byte[])CIPHER_PLAINTEXT.Clone();
// Decrypt the cipher using the key
ARC4.Apply(data, key);
// Decode the decrypted array
string decoded = Encoding.ASCII.GetString(data);
// Validate the decoded string
Assert.AreEqual(decoded, "Plaintext");
}
public void Encrypt_Plaintext()
{
// Get the bytes of the string "Plaintext". This will be the data
// that we are encoding.
byte[] data = Encoding.ASCII.GetBytes("Plaintext");
// Get the bytes of the string "Key". This will be the encryption key
// that we use.
byte[] key = Encoding.ASCII.GetBytes("Key");
// Encrypt the data using the key
ARC4.Apply(data, key);
// Validate that the encrypted data is the same as the cipher data
Assert.IsTrue(data.SequenceEqual(CIPHER_PLAINTEXT));
}
public void Decrypt_AttackAtDawn()
{
// Get the bytes of the string "Key". This will be the decryption key
// that we use.
byte[] key = Encoding.ASCII.GetBytes("Secret");
byte[] data = (byte[])CIPHER_ATTACKATDAWN.Clone();
// Decrypt the cipher using the key
ARC4.Apply(data, key);
// Decode the decrypted array
string decoded = Encoding.ASCII.GetString(data);
// Validate the decoded string
Assert.AreEqual(decoded, "Attack at dawn");
}
public void Encrypt_AttactAtDawn()
{
// Get the bytes of the string "Attack at dawn". This will be the data
// that we are encoding.
byte[] data = Encoding.ASCII.GetBytes("Attack at dawn");
// Get the bytes of the string "Secret". This will be the encryption key
// that we use.
byte[] key = Encoding.ASCII.GetBytes("Secret");
// Encrypt the data using the key
ARC4.Apply(data, key);
// Validate that the encrypted data is the same as the cipher data
Assert.IsTrue(data.SequenceEqual(CIPHER_ATTACKATDAWN));
}
public void Encrypt_Pedia()
{
// Get the bytes of the string "pedia". This will be the data
// that we are encoding.
byte[] data = Encoding.ASCII.GetBytes("pedia");
// Get the bytes of the string "Wiki". This will be the encryption key
// that we use.
byte[] key = Encoding.ASCII.GetBytes("Wiki");
// Encrypt the data using the key
ARC4.Apply(data, key);
// Validate that the encrypted data is the same as the cipher data
Assert.IsTrue(data.SequenceEqual(CIPHER_PEDIA));
}
public void Encrypt_PartOfPlaintext()
{
// Get the bytes of the string "Plaintext". This will be the data
// that we are encoding.
byte[] data = Encoding.ASCII.GetBytes("Plaintext");
// Get the bytes of the string "Key". This will be the encryption key
// that we use.
byte[] key = Encoding.ASCII.GetBytes("Key");
// Encrypt only part of the data using the key
ARC4.Apply(data, key, 0, 2);
ARC4.Apply(data, key, 0, 2);
Assert.AreEqual(Encoding.ASCII.GetString(data, 0, 2), "Pl");
// Encrypt only part of the data using the key
ARC4.Apply(data, key, 2, 3);
ARC4.Apply(data, key, 2, 3);
Assert.AreEqual(Encoding.ASCII.GetString(data, 2, 3), "ain");
}
