package com.github.davidmoten.security;
   
   import java.io.ByteArrayOutputStream;
   import java.io.IOException;
   import java.io.InputStream;
   
   final class Bytes {
   
       private Bytes() {
          // prevent instantiation
      }
  
      static byte[] from(InputStream is) {
          try {
              ByteArrayOutputStream bytes = new ByteArrayOutputStream();
              int nRead;
              byte[] buffer = new byte[1024];
              while ((nRead = is.read(buffer)) != -1) {
                  bytes.write(buffer, 0, nRead);
              }
              return bytes.toByteArray();
          } catch (IOException e) {
              throw new RuntimeException(e);
          }
      }
  
  }