本文介绍如何使用Java实现DES加密与解密操作。通过加载必要的jce.jar和liferay.jar库，创建DESKeySpec实例并利用SecretKeyFactory生成SecretKey。最后演示了如何进行字符串的加密和解密。
加解密，需要的jar包：jce.jar,liferay.jar
DESKeySpec dks = new DESKeySpec(bytes[]);
SecretKeyFactory keyFac = SecretKeyFactory.getInstance("DES");
SecretKey key = keyFac.generateSecret(dks);
String result1 = Encryptor.encrypt(key,str);//加密str
String result2 = Encryptor.decrypt(key,str);//解密str
DESKeySpec dks = new DESKeySpec(bytes[]);
SecretKeyFactory keyFac = SecretKeyFactory.getInstance("DES");
SecretKey key = keyFac.generateSecret(dks);
String result1 = Encryptor.encrypt(key,str);//加密str
String result2 = Encryptor.decrypt(key,str);//解密str
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