/// <summary>
		/// Perform the initial read on an entry which may include 
		/// reading encryption headers and setting up inflation.
		/// </summary>
		/// <param name="destination">The destination to fill with data read.</param>
		/// <param name="offset">The offset to start reading at.</param>
		/// <param name="count">The maximum number of bytes to read.</param>
		/// <returns>The actual number of bytes read.</returns>
		int InitialRead(byte[] destination, int offset, int count)
		{
			if ( !CanDecompressEntry ) {
				throw new ZipException("Library cannot extract this entry. Version required is (" + entry.Version.ToString() + ")");
			}
			
			// Handle encryption if required.
			if (entry.IsCrypted) {
#if NETCF_1_0
				throw new ZipException("Encryption not supported for Compact Framework 1.0");
#else
				if (password == null) {
					throw new ZipException("No password set.");
				}
				
				// Generate and set crypto transform...
				PkzipClassicManaged managed = new PkzipClassicManaged();
				byte[] key = PkzipClassic.GenerateKeys(ZipConstants.ConvertToArray(password));
				
				inputBuffer.CryptoTransform = managed.CreateDecryptor(key, null);
				
				byte[] cryptbuffer = new byte[ZipConstants.CryptoHeaderSize];
				inputBuffer.ReadClearTextBuffer(cryptbuffer, 0, ZipConstants.CryptoHeaderSize);

				if (cryptbuffer[ZipConstants.CryptoHeaderSize - 1] != entry.CryptoCheckValue) {
					throw new ZipException("Invalid password");
				}

				if (csize >= ZipConstants.CryptoHeaderSize) {
					csize -= ZipConstants.CryptoHeaderSize;
				}
				else if ( (entry.Flags & (int)GeneralBitFlags.Descriptor) == 0 ) {
					throw new ZipException(string.Format("Entry compressed size {0} too small for encryption", csize));
				}
#endif				
			} else {
#if !NETCF_1_0
				inputBuffer.CryptoTransform = null;
#endif				
			}
			
			if ( (method == (int)CompressionMethod.Deflated) && (inputBuffer.Available > 0) ) {
				inputBuffer.SetInflaterInput(inf);
			}
			
			internalReader = new ReaderDelegate(BodyRead);
			return BodyRead(destination, offset, count);
		}
		/// <summary>
		/// Initializes encryption keys based on given password
		/// </summary>
		/// <param name="password">The password.</param>
		protected void InitializePassword(string password)
		{
#if NETCF_1_0
			keys = new uint[] {
				0x12345678,
				0x23456789,
				0x34567890
			};
			
			byte[] rawPassword = ZipConstants.ConvertToArray(password);
			
			for (int i = 0; i < rawPassword.Length; ++i) {
				UpdateKeys((byte)rawPassword[i]);
			}
			
#else			
			PkzipClassicManaged pkManaged = new PkzipClassicManaged();
			byte[] key = PkzipClassic.GenerateKeys(ZipConstants.ConvertToArray(password));
			cryptoTransform_ = pkManaged.CreateEncryptor(key, null);
#endif
		}