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Hashingmd5.java
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Hashingmd5.java
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import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.io.*;
import javax.swing.*;
class Hashingmd5{
private static final char[] HEXADECIMAL = { '0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
private String Hash;
public Hashingmd5(String Hash){
this.Hash = ObtenerHash(Hash);
}
protected void SetHashing(String Hash){
this.Hash = ObtenerHash(Hash);
}
protected String getHashing(){
return this.Hash;
}
public static String ObtenerHash(String stringToHash){
if(stringToHash.length()>5) {
try {
MessageDigest md5 = MessageDigest.getInstance("MD5");
byte[] bytes = md5.digest(stringToHash.getBytes());
StringBuilder sb = new StringBuilder(2 * bytes.length);
for (int i = 0; i < bytes.length; i++) {
int low = bytes[i] & 0x0f;
int high = (bytes[i] & 0xf0) >> 4;
sb.append(HEXADECIMAL[high]);
sb.append(HEXADECIMAL[low]);
}
return sb.toString();
}catch (NoSuchAlgorithmException e) {
// Manejo de Excepcion
System.out.println("Excepción: No se pudo obtener la suma de verificación");
return null;
}
}else{
System.out.println("Se necesitan 5 caracteres como minimo para crear la suma");
System.out.println("LA cedena devuelsa sera nula");
}
return null;
}
}