/// <param name="cipherMode">The cipher mode.</param>
/// <param name="paddingMode">Padding algorithm to use</param>
public BlowfishEncryptor(
BlowfishCipherMode cipherMode,
PaddingMode paddingMode = DefaultPaddingMode
) : this(cipherMode, paddingMode, FastRandom.StaticInstance,
SafeOrbitCore.Current.Factory.Get <IPadderFactory>())
{
}
/// <summary>
/// Initializes a new instance of the <see cref="BlowfishEncryptor" /> class with a defined
/// <see cref="BlowfishCipherMode" /> and <see cref="ICryptoRandom" />.
/// </summary>
/// <param name="chiperMode">The chiper mode.</param>
/// <param name="random">The random generator to be used for creation of IV's.</param>
/// <exception cref="UnexpectedEnumValueException{BlowfishCipherMode}">
/// <paramref name="chiperMode" /> is not defined in <see cref="BlowfishCipherMode" />.
/// </exception>
/// <seealso cref="BlowfishCipherMode" />
/// <seealso cref="IvSize" />
/// <seealso cref="ICryptoRandom" />
public BlowfishEncryptor(BlowfishCipherMode chiperMode, ICryptoRandom random) : base(random)
{
if (((int)chiperMode != 0) && ((int)chiperMode != 1))
{
throw new UnexpectedEnumValueException <BlowfishCipherMode>(chiperMode);
}
CipherMode = chiperMode;
}
/// <exception cref="UnexpectedEnumValueException{TEnum}">
/// <paramref name="cipherMode" /> is not defined in
/// <see cref="BlowfishCipherMode" />.
/// </exception>
/// <exception cref="ArgumentNullException"><paramref name="random" /> is <see langword="null" /></exception>
internal BlowfishEncryptor(BlowfishCipherMode cipherMode, PaddingMode paddingMode, ICryptoRandom random,
IPadderFactory padderFactory) : base(random, paddingMode, padderFactory)
{
if ((int)cipherMode != 0 && (int)cipherMode != 1)
{
throw new UnexpectedEnumValueException <BlowfishCipherMode>(cipherMode);
}
CipherMode = cipherMode;
}
public async Task Encrypt_DifferentDataSizes_CanDecrypt(int dataSize,
BlowfishCipherMode cipherMode) // a.k.a. padding works
{
// Arrange
var expected = FastRandom.StaticInstance.GetBytes(dataSize);
var sut = new BlowfishEncryptor(cipherMode, PaddingMode.PKCS7);
var key = new byte[sut.MinKeySizeInBits];
// Act
var encrypted = await sut.EncryptAsync(expected, key);
var actual = await sut.DecryptAsync(encrypted, key);
// Assert
Assert.That(actual, Is.EqualTo(expected));
}
public async Task Decrypt_KeySizeIsBetweenMinKeyAndLastKey_CanDecrypt(BlowfishCipherMode cipherMode)
{
// Arrange
var input = (byte[])ByteCases.ByteArray32Length[0];
var sut = GetSut(cipherMode);
for (var i = sut.MinKeySizeInBits / 8; i < sut.MaxKeySizeInBits / 8; i++)
{
//act
var key = new byte[i];
var encrypted = await sut.EncryptAsync(input, key);
var plain = await sut.DecryptAsync(encrypted, key);
//assert
Assert.That(input, Is.EqualTo(plain));
}
}
private IFastEncryptor GetSut(BlowfishCipherMode cipherMode) => new BlowfishEncryptor(cipherMode, Stubs.Get <IFastRandom>());
/// <summary>
/// Initializes a new instance of the <see cref="BlowfishEncryptor" /> class with a defined
/// <see cref="BlowfishCipherMode" />.
/// </summary>
/// <param name="chiperMode">The chiper mode.</param>
/// <exception cref="UnexpectedEnumValueException{BlowfishCipherMode}">
/// <paramref name="chiperMode" /> is not defined in
/// <see cref="BlowfishCipherMode" />.
/// </exception>
/// <seealso cref="BlowfishCipherMode" />
/// <seealso cref="IvSize" />
public BlowfishEncryptor(BlowfishCipherMode chiperMode) : this(chiperMode, FastRandom.StaticInstance)
{
}
