Añado los fuentes de java

Fuentes/com/tarisan/util/DES.java

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+/* Clase que encripta y desencripta un string utilizando una semilla */
+
+package com.tarisan.util;
+
+import java.security.*;
+import java.util.Base64;
+import java.security.spec.AlgorithmParameterSpec;
+import java.security.spec.KeySpec;
+
+import javax.crypto.*;
+import javax.crypto.spec.*;
+
+//import sun.misc.CEStreamExhausted;
+//import sun.misc.CharacterEncoder;
+//import sun.misc.HexDumpEncoder;
+
+
+import java.io.*;
+
+public class DES {
+
+	Cipher ecipher;
+	Cipher dcipher;
+	
+	// 8-byte Salt
+	byte[] salt = {
+			(byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
+			(byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03
+	};
+	
+	// Iteration count
+	int iterationCount = 19;
+
+	public DES(String passPhrase) {
+		try {
+			// Create the key
+			KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount);
+			SecretKey key = SecretKeyFactory.getInstance(
+			"PBEWithMD5AndDES").generateSecret(keySpec);
+			ecipher = Cipher.getInstance(key.getAlgorithm());
+			dcipher = Cipher.getInstance(key.getAlgorithm());
+			
+			// Prepare the parameter to the ciphers
+			AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);
+			
+			// Create the ciphers
+			ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
+			dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
+		} catch (java.security.InvalidAlgorithmParameterException e) {
+		} catch (java.security.spec.InvalidKeySpecException e) {
+		} 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);
+			// Encode bytes to base64 using java8 basic base64:
+			String encodedString = Base64.getEncoder().encodeToString(enc);
+			return encodedString;
+		
+		} 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);
+			// Decode base64 to get bytes using java8 basic base64:
+			byte[] dec = Base64.getDecoder().decode(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;
+	}
+
+
+}