/// <summary>Gets a value indicating whether the specified algorithm requires an initialization vector.</summary> /// <param name="algorithm">The algorithm to check.</param> /// <returns><c>true</c> if the block mode uses an initialization vector; <c>false</c> otherwise.</returns> public static bool UsesIV(this SymmetricAlgorithm algorithm) => UsesIV(algorithm.GetMode());
/// <summary>
/// Returns a crypto key management for a specified algorithm.
/// </summary>
/// <param name="factory">The factory.</param>
/// <param name="algorithm">The algorithm.</param>
/// <returns>An instance of <see cref="ISymmetricKeyAlgorithmProvider"/>.</returns>
public static ISymmetricKeyAlgorithmProvider OpenAlgorithm(this ISymmetricKeyAlgorithmProviderFactory factory, SymmetricAlgorithm algorithm)
{
Requires.NotNull(factory, nameof(factory));
return(factory.OpenAlgorithm(algorithm.GetName(), algorithm.GetMode(), algorithm.GetPadding()));
}
/// <summary>Gets a value indicating whether the specified algorithm is implemented by a block cipher.</summary>
/// <param name="algorithm">The algorithm to check.</param>
/// <returns><c>true</c> if the cipher is a block cipher; <c>false</c> otherwise.</returns>
public static bool IsBlockCipher(this SymmetricAlgorithm algorithm)
{
return(algorithm.GetMode() != SymmetricAlgorithmMode.Streaming);
}
/// <summary>
/// Returns a crypto key management for a specified algorithm.
/// </summary>
/// <param name="factory">The factory.</param>
/// <param name="algorithm">The algorithm.</param>
/// <returns>An instance of <see cref="ISymmetricKeyAlgorithmProvider"/>.</returns>
public static ISymmetricKeyAlgorithmProvider OpenAlgorithm(this ISymmetricKeyAlgorithmProviderFactory factory, SymmetricAlgorithm algorithm)
{
Requires.NotNull(factory, nameof(factory));
return factory.OpenAlgorithm(algorithm.GetName(), algorithm.GetMode(), algorithm.GetPadding());
}