廢話不多說，直接上代碼
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package com.mstf.aes; import java.io.UnsupportedEncodingException;import java.security.InvalidKeyException;import java.security.NoSuchAlgorithmException;import java.security.SecureRandom; import javax.crypto.BadPaddingException;import javax.crypto.Cipher;import javax.crypto.IllegalBlockSizeException;import javax.crypto.KeyGenerator;import javax.crypto.NoSuchPaddingException;import javax.crypto.SecretKey;import javax.crypto.spec.SecretKeySpec; /** * @author ceet * */public class AESUntil { /** * 加密 * * */ public static String Ecodes(String content, String key) { if (content == null || content.length() < 1) return null; try { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128, new SecureRandom(key.getBytes())); SecretKey secretKey = kgen.generateKey(); byte[] enCodeFormat = secretKey.getEncoded(); SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, "AES"); Cipher cipher = Cipher.getInstance("AES"); byte[] byteContent = content.getBytes("utf-8"); cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec); byte[] byteRresult = cipher.doFinal(byteContent); StringBuffer sb = new StringBuffer(); for (int i = 0; i < byteRresult.length; i++) { String hex = Integer.toHexString(byteRresult[i] & 0xFF); if (hex.length() == 1) { hex = '0' + hex; } sb.append(hex.toUpperCase()); } return sb.toString(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (NoSuchPaddingException e) { e.printStackTrace(); } catch (InvalidKeyException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (IllegalBlockSizeException e) { e.printStackTrace(); } catch (BadPaddingException e) { e.printStackTrace(); } return null; } /** * 解密 * * */ public static String Dcodes(String content, String key) { if (content == null || content.length() < 1) return null; if (content.trim().length() < 19) return content; byte[] byteRresult = new byte[content.length() / 2]; for (int i = 0; i < content.length() / 2; i++) { int high = Integer.parseInt(content.substring(i * 2, i * 2 + 1), 16); int low = Integer.parseInt(content.substring(i * 2 + 1, i * 2 + 2), 16); byteRresult[i] = (byte) (high * 16 + low); } try { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128, new SecureRandom(key.getBytes())); SecretKey secretKey = kgen.generateKey(); byte[] enCodeFormat = secretKey.getEncoded(); SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, "AES"); Cipher cipher = Cipher.getInstance("AES"); cipher.init(Cipher.DECRYPT_MODE, secretKeySpec); byte[] result = cipher.doFinal(byteRresult); return new String(result); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (NoSuchPaddingException e) { e.printStackTrace(); } catch (InvalidKeyException e) { e.printStackTrace(); } catch (IllegalBlockSizeException e) { e.printStackTrace(); } catch (BadPaddingException e) { e.printStackTrace(); } return null; } /** * 詳細解釋 * 【ceet為加密的密匙】 * 【admin為需要加密的字符串】 * 【67BE5ED967DBA9B9810C295BE6DEF5D5為解密后的字符串】 * 【如果更改ceet，那么67BE5ED967DBA9B9810C295BE6DEF5D5字符串會發生變化】 * @param args */ // 調用測試 public static void main(String[] args) { System.out.println("需要加密的內容："+Ecodes("admin", "ceet")); System.out.println("經過解密的內容："+Dcodes("67BE5ED967DBA9B9810C295BE6DEF5D5", "ceet")); }} |
以上這篇Java AES加密解密的簡單實現方法就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持服務器之家。
