Java AES加密解密的简单实现方法

废话不多说，直接上代码

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;
 
/**
 * aes加密解密
 * @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;
 }
 
 /**
  * 详细解释
  * 【ceet为加密的密匙】
  * 【admin为需要加密的字符串】
  * 【67be5ed967dba9b9810c295be6def5d5为解密后的字符串】
  * 【如果更改ceet，那么67be5ed967dba9b9810c295be6def5d5字符串会发生变化】
  * @param args
  */
 // 调用测试
 public static void main(string[] args) {
  system.out.println("需要加密的内容："+ecodes("admin", "ceet"));
  system.out.println("经过解密的内容："+dcodes("67be5ed967dba9b9810c295be6def5d5", "ceet"));
 }
}

以上这篇java aes加密解密的简单实现方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。