SharpCifs.Util.Hmact64.Digest C# (CSharp) Method

        public override byte[] Digest()
        {
            return EngineDigest();
        }

		/// <summary>Calculates the effective user session key.</summary>
		/// <remarks>Calculates the effective user session key.</remarks>
		/// <param name="challenge">The server challenge.</param>
		/// <param name="dest">
		/// The destination array in which the user session key will be
		/// placed.
		/// </param>
		/// <param name="offset">
		/// The offset in the destination array at which the
		/// session key will start.
		/// </param>
		/// <exception cref="SharpCifs.Smb.SmbException"></exception>
		internal void GetUserSessionKey(byte[] challenge, byte[] dest, int offset)
		{
			if (HashesExternal)
			{
				return;
			}
			try
			{
				Md4 md4 = new Md4();
				md4.Update(Runtime.GetBytesForString(Password, SmbConstants.UniEncoding)
					);
				switch (LmCompatibility)
				{
					case 0:
					case 1:
					case 2:
					{
						md4.Update(md4.Digest());
						md4.Digest(dest, offset, 16);
						break;
					}

					case 3:
					case 4:
					case 5:
					{
						if (ClientChallenge == null)
						{
							ClientChallenge = new byte[8];
							Random.NextBytes(ClientChallenge);
						}
						Hmact64 hmac = new Hmact64(md4.Digest());
						hmac.Update(Runtime.GetBytesForString(Username.ToUpper(), SmbConstants.UniEncoding
							));
						hmac.Update(Runtime.GetBytesForString(Domain.ToUpper(), SmbConstants.UniEncoding
							));
						byte[] ntlmv2Hash = hmac.Digest();
						hmac = new Hmact64(ntlmv2Hash);
						hmac.Update(challenge);
						hmac.Update(ClientChallenge);
						Hmact64 userKey = new Hmact64(ntlmv2Hash);
						userKey.Update(hmac.Digest());
						userKey.Digest(dest, offset, 16);
						break;
					}

					default:
					{
						md4.Update(md4.Digest());
						md4.Digest(dest, offset, 16);
						break;
					}
				}
			}
			catch (Exception e)
			{
				throw new SmbException(string.Empty, e);
			}
		}