Method decryptFileHash

src/de/mas/jnustool/util/Decryption.java:271–326

(InputStream inputStream, OutputStream outputStream,FEntry toDownload,byte[] h3)

        return result;
	}
	public boolean decryptFileHash(InputStream inputStream, OutputStream outputStream,FEntry toDownload,byte[] h3) throws IOException{
		int BLOCKSIZE = 0x10000;
		int HASHBLOCKSIZE = 0xFC00;
		
		long writeSize = HASHBLOCKSIZE;		
		long block = (toDownload.getFileOffset() / HASHBLOCKSIZE);	
		
		long soffset = toDownload.getFileOffset() - (toDownload.getFileOffset() / HASHBLOCKSIZE * HASHBLOCKSIZE);	
		
		long size =  toDownload.getFileLength();
	
		if( soffset+size > writeSize )
			writeSize = writeSize - soffset;
		
		
	    byte[] encryptedBlockBuffer = new byte[BLOCKSIZE];
	    ByteArrayBuffer overflow = new ByteArrayBuffer(BLOCKSIZE);
	
	    long wrote = 0;
	    int inBlockBuffer;
	    
	    if(progressListener != null){
        	progressListener.setTotal(toDownload.getFileLength()/HASHBLOCKSIZE*BLOCKSIZE);
        	progressListener.resetCurrent();
        }
    	do{        	
    		inBlockBuffer = Util.getChunkFromStream(inputStream,encryptedBlockBuffer,overflow,BLOCKSIZE);
    		if(progressListener != null){            	
            	progressListener.addCurrent(inBlockBuffer);
            }
			if( writeSize > size )
				writeSize = size;
			
			byte[] output = decryptFileChunkHash(encryptedBlockBuffer, (int) block,toDownload.getContentID(),h3);
	     	
	     	if((wrote + writeSize) > toDownload.getFileLength()){             		
	     		writeSize = (int) (toDownload.getFileLength()- wrote);
	     	}
	                 
			outputStream.write(output, (int)(0+soffset), (int)writeSize);
			wrote +=writeSize;
			
			block++;			
			
			if( soffset > 0)
			{
				writeSize = HASHBLOCKSIZE;
				soffset = 0;
			} 	
		}while(wrote < toDownload.getFileLength() && (inBlockBuffer == BLOCKSIZE));
		
		outputStream.close();
		inputStream.close();
		return true;
		
	}
	
	public boolean decryptContentHash(InputStream inputStream, OutputStream outputStream,Content content,byte[] h3) throws IOException{