How to use

clone

method

in

javax.crypto.Mac

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

 private Mac getMac() {
  // Mac is not thread-safe. Requires a new clone for each signature.
  try {
   return (Mac) mac.clone();
  } catch (CloneNotSupportedException e) {
   throw new IllegalStateException(e);
  }
 }
}

@Override
public Hasher newHasher() {
 if (supportsClone) {
  try {
   return new MacHasher((Mac) prototype.clone());
  } catch (CloneNotSupportedException e) {
   // falls through
  }
 }
 return new MacHasher(getMac(prototype.getAlgorithm(), key));
}

@Override
public Hasher newHasher() {
 if (supportsClone) {
  try {
   return new MacHasher((Mac) prototype.clone());
  } catch (CloneNotSupportedException e) {
   // falls through
  }
 }
 return new MacHasher(getMac(prototype.getAlgorithm(), key));
}

@Override
public Hasher newHasher() {
 if (supportsClone) {
  try {
   return new MacHasher((Mac) prototype.clone());
  } catch (CloneNotSupportedException e) {
   // falls through
  }
 }
 return new MacHasher(getMac(prototype.getAlgorithm(), key));
}

@Override
public Hasher newHasher() {
 if (supportsClone) {
  try {
   return new MacHasher((Mac) prototype.clone());
  } catch (CloneNotSupportedException e) {
   // falls through
  }
 }
 return new MacHasher(getMac(prototype.getAlgorithm(), key));
}

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

private static boolean supportsClone(Mac mac) {
 try {
  mac.clone();
  return true;
 } catch (CloneNotSupportedException e) {
  return false;
 }
}

private static Mac createNewHmacInstance() throws NoSuchAlgorithmException {
 try {
  Mac clonedMac = (Mac) HMACSHA256_PROTOTYPE.clone();
  clonedMac.reset();
  return clonedMac;
 } catch (CloneNotSupportedException e) {
  return Mac.getInstance(HMAC_SHA_256_ALGO);
 }
}

@Override
public Hasher newHasher() {
 if (supportsClone) {
  try {
   return new MacHasher((Mac) prototype.clone());
  } catch (CloneNotSupportedException e) {
   // falls through
  }
 }
 return new MacHasher(getMac(prototype.getAlgorithm(), key));
}

@Override
public Hasher newHasher() {
 if (supportsClone) {
  try {
   return new MacHasher((Mac) prototype.clone());
  } catch (CloneNotSupportedException e) {
   // falls through
  }
 }
 return new MacHasher(getMac(prototype.getAlgorithm(), key));
}

@Override
public Hasher newHasher() {
 if (supportsClone) {
  try {
   return new MacHasher((Mac) prototype.clone());
  } catch (CloneNotSupportedException e) {
   // falls through
  }
 }
 return new MacHasher(getMac(prototype.getAlgorithm(), key));
}