Java|Java JDK 实现 DES1 加解密 JavaJDK实现DES1加解密

一, 各种模式的DES-1加密.(直接上代码)

public final static String DES = "DES"; public interface DesModeType{ public final static String DES_MODE_CFB8 = "DES/CFB8/NoPadding"; // 需要 iv public final static String DES_MODE_CFB64 = "DES/CFB64/NoPadding"; // 需要 iv public final static String DES_MODE_OFB8 = "DES/OFB8/NoPadding"; // 需要 iv public final static String DES_MODE_OFB64 = "DES/OFB64/NoPadding"; // 需要 iv public final static String DES_MODE_CBC = "DES/CBC/PKCS5Padding"; // 需要 iv public final static String DES_MODE_ECB = "DES/ECB/PKCS5Padding"; }public void testDES(){ Log.d(TAG, "testDES: 测试DES"); String key = "123456789"; String content = "JustTestDataForDES"; try { byte[] iv = { 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31}; String mode = DES_MODE_CFB8; Log.d(TAG, "解密数据CFB8 : " + new String(decryptAesBase(encryptAesBase(content.getBytes("utf-8"),key.getBytes("utf-8"),mode,iv),key.getBytes("utf-8"),mode,iv))); mode = DES_MODE_CFB64; Log.d(TAG, "解密数据CFB64 : " + new String(decryptAesBase(encryptAesBase(content.getBytes("utf-8"),key.getBytes("utf-8"),mode,iv),key.getBytes("utf-8"),mode,iv))); mode = DES_MODE_OFB8; Log.d(TAG, "解密数据OFB8 : " + new String(decryptAesBase(encryptAesBase(content.getBytes("utf-8"),key.getBytes("utf-8"),mode,iv),key.getBytes("utf-8"),mode,iv))); mode = DES_MODE_OFB64; Log.d(TAG, "解密数据OFB64 : " + new String(decryptAesBase(encryptAesBase(content.getBytes("utf-8"),key.getBytes("utf-8"),mode,iv),key.getBytes("utf-8"),mode,iv))); mode = DES_MODE_CBC; Log.d(TAG, "解密数据CBC : " + new String(decryptAesBase(encryptAesBase(content.getBytes("utf-8"),key.getBytes("utf-8"),mode,iv),key.getBytes("utf-8"),mode,iv))); mode = DES_MODE_ECB; Log.d(TAG, "解密数据ECB : " + new String(decryptAesBase(encryptAesBase(content.getBytes("utf-8"),key.getBytes("utf-8"),mode,iv),key.getBytes("utf-8"),mode,iv))); } catch (Exception e) { e.printStackTrace(); Log.e(TAG, "testDES: 发生异常" ); }} /** * AES 加密. * @param data 待加密数据. * @param key加密键byte数组 * @param mode 加密模式. * @param iv向量 8 位. * @return */ private static byte[] encryptAesBase(byte[] data, byte[] key , String mode , byte[] iv){ try { // 1. 创建秘钥对象. DESKeySpec keySpec = new DESKeySpec(key); SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES); SecretKey securekey = keyFactory.generateSecret(keySpec); // 创建加密对象. Cipher cipher = Cipher.getInstance(mode); // 初始化加密器. if (mode.equals(DES_MODE_ECB)){ cipher.init(Cipher.ENCRYPT_MODE, securekey); }else{ cipher.init(Cipher.ENCRYPT_MODE, securekey,new IvParameterSpec(iv)); } return cipher.doFinal(data); }catch (Exception e){ return null; } }/** * AES 解密 * @param data 待解密数据. * @param key加密键byte数组 * @param mode 解密模式. * @param iv向量. * @return */ private static byte[] decryptAesBase(byte[] data, byte[] key, String mode, byte[] iv){ try{ // 1. 创建秘钥. DESKeySpec keySpec = new DESKeySpec(key); SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES); SecretKey securekey = keyFactory.generateSecret(keySpec); // 2. 创建加密器. Cipher cipher = Cipher.getInstance(mode); // 3. 初始化加密器. if (mode.equals(DES_MODE_ECB)){ cipher.init(Cipher.DECRYPT_MODE, securekey); }else{ cipher.init(Cipher.DECRYPT_MODE, securekey,new IvParameterSpec(iv)); } return cipher.doFinal(data); }catch (Exception e){ return null; } }

Java|Java JDK 实现 DES1 加解密

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