docs: public static RAND getRand() {
          // construct a secure seed
          int seedLength = IdemixUtils.FIELD_BYTES;
          SecureRandom random = new SecureRandom();
          byte[] seed = random.generateSeed(seedLength);
  
          // create a new amcl.RAND and initialize it with the generated seed
          RAND rng = new RAND();
          rng.clean();
          rng.seed(seedLength, seed);
  
          return rng;
      }