Page History

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public final class Password {
  private String salt = "ia0942980234241sadfaewvo32"; //Randomly generated

  private void setPassword(String pass) throws Exception {
    byte[] salt = generateSalt(12);
    MessageDigest sha_1 = MessageDigest.getInstance("SHA-1");
    byte[] hashVal = sha_1.digest((pass+salt).getBytes()); //encode the string and salt
    saveBytes(salt, "salt.bin");
    saveBytes(hashVal,"credentials.pwbin"); //save the hash value to credentials.pwbin
  }

  private boolean checkPassword(String pass) throws Exception {
    byte[] salt = loadBytes("salt.bin");
    MessageDigest sha_1 = MessageDigest.getInstance("SHA-1");
    byte[] hashVal1 = sha_1.digest((pass+salt).getBytes()); //encode the string and salt
    byte[] hashVal2 = loadBytes("credentials.pwbin"); //load the hash value stored in credentials.pwbin
    return Arrays.equals(hashVal1, hashVal2);
  }


  private byte[] generateSalt(int n) {
    //Generate a random byte array of length n
  }
}