public void setStreamingBufferSize(int streamingBufferSize) {
        this.streamingBufferSize = streamingBufferSize;
    }
Sets the size in bytes of the internal buffer used to transfer data from one stream to another during stream
operations ({@link #encrypt(java.io.InputStream, java.io.OutputStream, byte[])} and
{@link #decrypt(java.io.InputStream, java.io.OutputStream, byte[])}).
<p/>
Default size is {@code 512} bytes.

@param streamingBufferSize the size of the internal buffer used to transfer data from one stream to another
                           during stream operations
src/main/java/org/apache/shiro/crypto/cipher/JcaCipherService.java