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android开发 java与c# 兼容AES加密
由于android客户端采用的是AES加密,服务器用的是asp.net(c#),所以就造成了不一致的加密与解密问题,下面就贴出代码,已经试验过。
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Security.Cryptography;using System.IO;namespace BLL{ public class AESHelper { /// <summary> /// 有密码的AES加密 /// </summary> /// <param name="text">加密字符</param> /// <param name="password">加密的密码</param> /// <param name="iv">密钥</param> /// <returns></returns> public static string Encrypt(string toEncrypt, string key) { byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key); byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt); RijndaelManaged rDel = new RijndaelManaged(); rDel.Key = keyArray; rDel.Mode = CipherMode.ECB; rDel.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = rDel.CreateEncryptor(); byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); return Convert.ToBase64String(resultArray, 0, resultArray.Length); } /// <summary> /// AES解密 /// </summary> /// <param name="text"></param> /// <param name="password"></param> /// <param name="iv"></param> /// <returns></returns> public static string Decrypt(string toDecrypt, string key) { byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key); byte[] toEncryptArray = Convert.FromBase64String(toDecrypt); RijndaelManaged rDel = new RijndaelManaged(); rDel.Key = keyArray; rDel.Mode = CipherMode.ECB; rDel.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = rDel.CreateDecryptor(); byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); return UTF8Encoding.UTF8.GetString(resultArray); } }}
java
import android.util.Base64;import javax.crypto.Cipher;import javax.crypto.spec.SecretKeySpec;/** * AES加密器 * @author Eric_Ni * */public class AESEncryptor { // 加密 public static String Encrypt(String sSrc, String sKey) throws Exception { if (sKey == null) { System.out.print("Key为空null"); return null; } // 判断Key是否为16位 if (sKey.length() != 16) { System.out.print("Key长度不是16位"); return null; } byte[] raw = sKey.getBytes("utf-8"); SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");//"算法/模式/补码方式" cipher.init(Cipher.ENCRYPT_MODE, skeySpec); byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8")); return Base64.encodeToString(encrypted,Base64.DEFAULT);//.encodeToString(encrypted,0);//此处使用BASE64做转码功能,同时能起到2次加密的作用。 } // 解密 public static String Decrypt(String sSrc, String sKey) throws Exception { try { // 判断Key是否正确 if (sKey == null) { System.out.print("Key为空null"); return null; } // 判断Key是否为16位 if (sKey.length() != 16) { System.out.print("Key长度不是16位"); return null; } byte[] raw = sKey.getBytes("utf-8"); SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, skeySpec); byte[] encrypted1 = Base64.decode(sSrc,Base64.DEFAULT);//先用base64解密 try { byte[] original = cipher.doFinal(encrypted1); String originalString = new String(original,"utf-8"); return originalString; } catch (Exception e) { System.out.println(e.toString()); return null; } } catch (Exception ex) { System.out.println(ex.toString()); return null; } }}
我开始在网上看到别人用BASE64,引用的是:import
org.apache.commons.codec.binary.Base64;
但是我下载过,又报错Base64().encodeToString nosuchMethod 烦躁...
后面改为引用import android.util.Base64;一样可以用,注意 android端采用了静态的方法,不需要new
测试数据 android客户端 待加密字符:13 经加密后为:6U64XSoSkheXXhyQ3vxC3Q==
服务器端: 收到字符串:6U64XSoSkheXXhyQ3vxC3Q== 解密后:13
参考文档:http://www.oschina.net/code/snippet_242957_9931
android开发 java与c# 兼容AES加密
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