🚀 go-pugleaf

Ejemplo de Google de cifrado con DES....

     public class DesEncrypter {
         Cipher ecipher;
         Cipher dcipher;

         DesEncrypter(SecretKey key) {
             try {
                 ecipher = Cipher.getInstance("DES");
                 dcipher = Cipher.getInstance("DES");
                 ecipher.init(Cipher.ENCRYPT_MODE, key);
                 dcipher.init(Cipher.DECRYPT_MODE, key);

             } catch (javax.crypto.NoSuchPaddingException e) {
             } catch (java.security.NoSuchAlgorithmException e) {
             } catch (java.security.InvalidKeyException e) {
             }
         }

         public String encrypt(String str) {
             try {
                 // Encode the string into bytes using utf-8
                 byte[] utf8 = str.getBytes("UTF8");

                 // Encrypt
                 byte[] enc = ecipher.doFinal(utf8);

                 // Encode bytes to base64 to get a string
                 return new sun.misc.BASE64Encoder().encode(enc);
             } catch (javax.crypto.BadPaddingException e) {
             } catch (IllegalBlockSizeException e) {
             } catch (UnsupportedEncodingException e) {
             } catch (java.io.IOException e) {
             }
             return null;
         }

         public String decrypt(String str) {
             try {
                 // Decode base64 to get bytes
                 byte[] dec = new sun.misc.BASE64Decoder().decodeBuffer(str);

                 // Decrypt
                 byte[] utf8 = dcipher.doFinal(dec);

                 // Decode using utf-8
                 return new String(utf8, "UTF8");
             } catch (javax.crypto.BadPaddingException e) {
             } catch (IllegalBlockSizeException e) {
             } catch (UnsupportedEncodingException e) {
             } catch (java.io.IOException e) {
             }
             return null;
         }
     }

Here's an example that uses the class:

     try {
         // Generate a temporary key. In practice, you would save this key.
         // See also e464 Encrypting with DES Using a Pass Phrase.
         SecretKey key = KeyGenerator.getInstance("DES").generateKey();

         // Create encrypter/decrypter class
         DesEncrypter encrypter = new DesEncrypter(key);

         // Encrypt
         String encrypted = encrypter.encrypt("Don't tell anybody!");

         // Decrypt
         String decrypted = encrypter.decrypt(encrypted);
     } catch (Exception e) {
     }