code: public void reset() {
          super.reset();
  
          H1 = 0x67452301;
          H2 = 0xefcdab89;
          H3 = 0x98badcfe;
          H4 = 0x10325476;
  
          xOff = 0;
  
          for (int i = 0; i != X.length; i++) {
              X[i] = 0;
          }
      }
docs: reset the chaining variables to the IV values.