namespace System.Security.Cryptography { public sealed class IncrementalHash : IDisposable { public HashAlgorithmName AlgorithmName { get; } public void AppendData(byte[] data); public void AppendData(byte[] data, int offset, int count); public static IncrementalHash CreateHash(HashAlgorithmName hashAlgorithm); public static IncrementalHash CreateHMAC(HashAlgorithmName hashAlgorithm, byte[] key); public void Dispose(); public byte[] GetHashAndReset(); } }