";encryptCipher.init(Cipher.ENCRYPT_MODE,secretKey);byte[]encryptedData=encryptCipher.doFinal(originalData.getBytes(StandardCharsets.UTF_8));// 解密密文decryptCipher.init(Cipher.DECRYPT_MODE,secretKey);byte[]decryptedData=decryptCipher.doFinal(encryptedData);// 输出结果System.out.println("原始数据:"+...
* @return*/publicstaticString getEncryptString(String str) {//基于BASE64编码,接收byte[]并转换成StringBASE64Encoder encoder =newBASE64Encoder();try{//按utf8编码byte[] bytes =str.getBytes(CHARSETNAME);//获取加密对象Cipher cipher =Cipher.getInstance(ALGORITHM);//初始化密码信息cipher.init(Cipher.E...
String encryptData = encrypt(source, key); System.out.println("加密后: "+ encryptData); String decryptData = decrypt(encryptData, key); System.out.println("解密后: "+ decryptData); } } 2.非对称加密 非对称加密为数据的加密与解密提供了一个非常安全的方法,它使用了一对密钥,公钥(public key)...
异或:与其说这是一种加密算法,倒不如称其为文件信息的简单变换,将每一个数据与某给定数据进行异或操作即可完成加密或解密,如dataEncrypt = dataSource^dataSecret。 OK,是时候回到文件加密与解密的具体实现这个主题上来了。后续的举例均采用图片(包括GIF动画)类型,而其他类型资源的实现原理相同,就不一一给出了。首先...
In this tutorial, we’ll take a look on how to encrypt and decrypt a file using existing JDK APIs. 2. Writing a Test First We’ll start by writing our test, TDD style. Since we’re going to work with files here, an integration test seems to be appropriate. As we’re just using ...
(); String code = Coder.encryptBASE64(inputData); System.err.println("BASE64加密后:\n" + code); byte[] output = Coder.decryptBASE64(code); String outputStr = new String(output); System.err.println("BASE64解密后:\n" + outputStr); // 验证BASE64加密解密一致性 assertEquals(inputStr,...
out.println("jdk aes encrypt: " + Base64.encodeBase64String(result));//初始化,设置为解密cipher.init(Cipher.DECRYPT_MODE, key); result = cipher.doFinal(result); System.out.println("jdk aes desrypt:" + new String(result)); 四、对称加密算法-PBE PBE本质上是对DES/3DES/AES对称加密算法的...
public class HexDemoTest { @Test public void test01() { String data = "itcast" ; byte[] bytes = data.getBytes() ; //测试hex String encoded = Hex.encodeHexString(bytes) ; System.out.println(encoded); }} 5.2 base64编码 Base64编码要求把3个8位字节(3乘8=24)转化为4个6位的字节(...
// cipher.init(Cipher.ENCRYPT_MODE, keySpec); // 加密 byte[] bytes = cipher.doFinal(original.getBytes()); return Base64Util.encryptBASE64(bytes); } /** * 解密 * @param encrypted 需要解密的参数 * @return * @throws Exception */ public static String decryptByAES(String encrypted) throws...
-d Decrypt the input data -debug Print debugging information -e Encrypt the input data (default) -in file Input file to read from (default stdin) -iv IV IV to use, specified as a hexadecimal string -K key Key to use, specified as a hexadecimal string ...