AES加密庫(kù)的使用：

? ? ·根據(jù)AES密鑰創(chuàng)建Secret密鑰向量；

? ? ·生成初始化參數(shù)向量；

? ? ·獲取AES Cipher；

? ? ·執(zhí)行加密；

? ? ·Base64編碼（建議）

程序運(yùn)行截圖如下：

?調(diào)用如下：

public static void main(String[] args) throws UnsupportedEncodingException {String content = "123456";AES aes = new AES();byte[] encrypted = aes.encrypt(content);System.out.println(new String(encrypted));............ }

AES.java

package cn.it1995.tool;import javax.crypto.*; import java.security.InvalidKeyException; import java.security.NoSuchAlgorithmException; import java.security.SecureRandom;//AES沒(méi)有公鑰和私鑰之分 public class AES {private SecretKey mKey;public AES(){try {KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");//創(chuàng)建隨機(jī)密碼，并設(shè)置種子SecureRandom secureRandom = new SecureRandom();secureRandom.setSeed(System.currentTimeMillis());//初始化密鑰對(duì)象keyGenerator.init(128, secureRandom);mKey = keyGenerator.generateKey();}catch (NoSuchAlgorithmException e) {e.printStackTrace();}}public byte[] encrypt(String content){if(mKey == null){return new byte[]{-1};}try {Cipher cipher = Cipher.getInstance("AES");cipher.init(Cipher.ENCRYPT_MODE, mKey);return cipher.doFinal(content.getBytes());}catch (NoSuchAlgorithmException e) {e.printStackTrace();}catch (NoSuchPaddingException e) {e.printStackTrace();}catch (BadPaddingException e) {e.printStackTrace();}catch (IllegalBlockSizeException e) {e.printStackTrace();}catch (InvalidKeyException e) {e.printStackTrace();}return new byte[]{-1};}public byte[] decrypt(byte[] content){if(mKey == null){return new byte[]{-1};}try {Cipher cipher = Cipher.getInstance("AES");cipher.init(Cipher.DECRYPT_MODE, mKey);return cipher.doFinal(content);}catch (NoSuchAlgorithmException e) {e.printStackTrace();}catch (NoSuchPaddingException e) {e.printStackTrace();}catch (BadPaddingException e) {e.printStackTrace();}catch (IllegalBlockSizeException e) {e.printStackTrace();}catch (InvalidKeyException e) {e.printStackTrace();}return new byte[]{-1};} }

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