.NET/android/java/iOS AES通用加密解密(修正安卓)
移动端越来越火了,我们在开发过程中,总会碰到要和移动端打交道的场景,比如.NET和android或者iOS的打交道。为了让数据交互更安全,我们需要对数据进行加密传输。今天研究了一下,把几种语言的加密都实践了一遍,实现了.NET,java(android),iOS都同一套的加密算法,下面就分享给大家。(转载自:http://www.cnblogs.com/jys509/p/4768120.html 有对安卓的代码单独贴出。)
AES加密有多种算法模式,下面提供两套模式的可用源码。
加密方式:
- 先将文本AES加密
- 返回Base64转码
解密方式:
- 将数据进行Base64解码
- 进行AES解密
一、CBC(Cipher Block Chaining,加密块链)模式
是一种循环模式,前一个分组的密文和当前分组的明文异或操作后再加密,这样做的目的是增强破解难度.
- 密钥
- 密钥偏移量
java加密AESOperator类:
1 package com.bci.wx.base.util; 2 3 import javax.crypto.Cipher; 4 import javax.crypto.spec.IvParameterSpec; 5 import javax.crypto.spec.SecretKeySpec; 6 7 import sun.misc.BASE64Decoder; 8 import sun.misc.BASE64Encoder; 9 10 11 /** 12 * AES 是一种可逆加密算法,对用户的敏感信息加密处理 对原始数据进行AES加密后,在进行Base64编码转化; 13 */ 14 public class AESOperator { 15 16 /* 17 * 加密用的Key 可以用26个字母和数字组成 此处使用AES-128-CBC加密模式,key需要为16位。 18 */ 19 private String sKey = "smkldospdosldaaa";//key,可自行修改 20 private String ivParameter = "0392039203920300";//偏移量,可自行修改 21 private static AESOperator instance = null; 22 23 private AESOperator() { 24 25 } 26 27 public static AESOperator getInstance() { 28 if (instance == null) 29 instance = new AESOperator(); 30 return instance; 31 } 32 33 public static String Encrypt(String encData ,String secretKey,String vector) throws Exception { 34 35 if(secretKey == null) { 36 return null; 37 } 38 if(secretKey.length() != 16) { 39 return null; 40 } 41 Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); 42 byte[] raw = secretKey.getBytes(); 43 SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); 44 IvParameterSpec iv = new IvParameterSpec(vector.getBytes());// 使用CBC模式,需要一个向量iv,可增加加密算法的强度 45 cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv); 46 byte[] encrypted = cipher.doFinal(encData.getBytes("utf-8")); 47 return new BASE64Encoder().encode(encrypted);// 此处使用BASE64做转码。 48 } 49 50 51 // 加密 52 public String encrypt(String sSrc) throws Exception { 53 Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); 54 byte[] raw = sKey.getBytes(); 55 SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); 56 IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());// 使用CBC模式,需要一个向量iv,可增加加密算法的强度 57 cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv); 58 byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8")); 59 return new BASE64Encoder().encode(encrypted);// 此处使用BASE64做转码。 60 } 61 62 // 解密 63 public String decrypt(String sSrc) throws Exception { 64 try { 65 byte[] raw = sKey.getBytes("ASCII"); 66 SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); 67 Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); 68 IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes()); 69 cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv); 70 byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);// 先用base64解密 71 byte[] original = cipher.doFinal(encrypted1); 72 String originalString = new String(original, "utf-8"); 73 return originalString; 74 } catch (Exception ex) { 75 return null; 76 } 77 } 78 79 public String decrypt(String sSrc,String key,String ivs) throws Exception { 80 try { 81 byte[] raw = key.getBytes("ASCII"); 82 SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); 83 Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); 84 IvParameterSpec iv = new IvParameterSpec(ivs.getBytes()); 85 cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv); 86 byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);// 先用base64解密 87 byte[] original = cipher.doFinal(encrypted1); 88 String originalString = new String(original, "utf-8"); 89 return originalString; 90 } catch (Exception ex) { 91 return null; 92 } 93 } 94 95 public static String encodeBytes(byte[] bytes) { 96 StringBuffer strBuf = new StringBuffer(); 97 98 for (int i = 0; i < bytes.length; i++) { 99 strBuf.append((char) (((bytes[i] >> 4) & 0xF) + ((int) 'a'))); 100 strBuf.append((char) (((bytes[i]) & 0xF) + ((int) 'a'))); 101 } 102 103 return strBuf.toString(); 104 } 105 106 public static void main(String[] args) throws Exception { 107 // 需要加密的字串 108 String cSrc = "[{\"request_no\":\"1001\",\"service_code\":\"FS0001\",\"contract_id\":\"100002\",\"order_id\":\"0\",\"phone_id\":\"13913996922\",\"plat_offer_id\":\"100094\",\"channel_id\":\"1\",\"activity_id\":\"100045\"}]"; 109 110 // 加密 111 long lStart = System.currentTimeMillis(); 112 String enString = AESOperator.getInstance().encrypt(cSrc); 113 System.out.println("加密后的字串是:" + enString); 114 115 long lUseTime = System.currentTimeMillis() - lStart; 116 System.out.println("加密耗时:" + lUseTime + "毫秒"); 117 // 解密 118 lStart = System.currentTimeMillis(); 119 String DeString = AESOperator.getInstance().decrypt(enString); 120 System.out.println("解密后的字串是:" + DeString); 121 lUseTime = System.currentTimeMillis() - lStart; 122 System.out.println("解密耗时:" + lUseTime + "毫秒"); 123 } 124 125 }
Android加密AESOperator类:(以下红色部分是JAVA和安卓代码不同的地方,安卓代码里面和IOS,c#结果一样的加密/解密方法是Encrypt64/Decrypt64)
1 package com.example.demo2; 2 3 import javax.crypto.Cipher; 4 import javax.crypto.spec.IvParameterSpec; 5 import javax.crypto.spec.SecretKeySpec; 6 7 import android.util.Base64; 8 9 public class AESEncrypto { 10 public static byte[] _key = { 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 97, 11 98, 99, 100, 101, 102 };// 初始化矩阵 12 public static String ivParameter="0392039203920300"; 13 // 加密 14 public static String Encrypt64(String sSrc, String sKey) throws Exception { 15 if (sKey == null) { 16 System.out.print("Key为空null"); 17 return null; 18 } 19 // 判断Key是否为16位 20 if (sKey.length() != 16) { 21 System.out.print("Key长度不是16位"); 22 return null; 23 } 24 byte[] raw = sKey.getBytes(); 25 SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); 26 Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");// "算法/模式/补码方式" 27 IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());// 使用CBC模式,需要一个向量iv,可增加加密算法的强度 28 cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv); 29 byte[] encrypted = cipher.doFinal(sSrc.getBytes()); 30 31 return Base64.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。 32 } 33 34 // 解密 35 public static String Decrypt64(String sSrc, String sKey) throws Exception { 36 try { 37 // 判断Key是否正确 38 if (sKey == null) { 39 System.out.print("Key为空null"); 40 return null; 41 } 42 // 判断Key是否为16位 43 if (sKey.length() != 16) { 44 System.out.print("Key长度不是16位"); 45 return null; 46 } 47 byte[] raw = sKey.getBytes("ASCII"); 48 SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); 49 Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); 50 IvParameterSpec iv = new IvParameterSpec( 51 ivParameter.getBytes()); 52 cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv); 53 byte[] encrypted1 = Base64.decode(sSrc, 0);// 先用base64解密 54 try { 55 byte[] original = cipher.doFinal(encrypted1); 56 String originalString = new String(original); 57 return originalString; 58 } catch (Exception e) { 59 System.out.println(e.toString()); 60 return null; 61 } 62 } catch (Exception ex) { 63 System.out.println(ex.toString()); 64 return null; 65 } 66 } 67 68 public static String Encrypt(String sSrc, String sKey) throws Exception { 69 if (sKey == null) { 70 System.out.print("Key为空null"); 71 return null; 72 } 73 // 判断Key是否为16位 74 if (sKey.length() != 16) { 75 System.out.print("Key长度不是16位"); 76 return null; 77 } 78 byte[] raw = sKey.getBytes(); 79 SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); 80 Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); 81 IvParameterSpec iv = new IvParameterSpec(_key); 82 cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv); 83 byte[] encrypted = cipher.doFinal(sSrc.getBytes()); 84 85 return byte2hex(encrypted).toLowerCase(); 86 } 87 88 public static String Decrypt(String sSrc, String sKey) throws Exception { 89 try { 90 // 判断Key是否正确 91 if (sKey == null) { 92 System.out.print("Key为空null"); 93 return null; 94 } 95 // 判断Key是否为16位 96 if (sKey.length() != 16) { 97 System.out.print("Key长度不是16位"); 98 return null; 99 } 100 byte[] raw = sKey.getBytes("ASCII"); 101 SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); 102 Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); 103 IvParameterSpec iv = new IvParameterSpec(_key); 104 cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv); 105 byte[] encrypted1 = hex2byte(sSrc); 106 try { 107 byte[] original = cipher.doFinal(encrypted1); 108 String originalString = new String(original); 109 return originalString; 110 } catch (Exception e) { 111 System.out.println(e.toString()); 112 return null; 113 } 114 } catch (Exception ex) { 115 System.out.println(ex.toString()); 116 return null; 117 } 118 } 119 120 public static byte[] hex2byte(String strhex) { 121 if (strhex == null) { 122 return null; 123 } 124 int l = strhex.length(); 125 if (l % 2 == 1) { 126 return null; 127 } 128 byte[] b = new byte[l / 2]; 129 for (int i = 0; i != l / 2; i++) { 130 b[i] = (byte) Integer.parseInt(strhex.substring(i * 2, i * 2 + 2), 131 16); 132 } 133 return b; 134 } 135 136 public static String byte2hex(byte[] b) { 137 String hs = ""; 138 String stmp = ""; 139 for (int n = 0; n < b.length; n++) { 140 stmp = (java.lang.Integer.toHexString(b[n] & 0XFF)); 141 if (stmp.length() == 1) { 142 hs = hs + "0" + stmp; 143 } else { 144 hs = hs + stmp; 145 } 146 } 147 return hs.toUpperCase(); 148 } 149 150 }
.NET AES加密解密:
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Security.Cryptography; 5 using System.Text; 6 using System.Threading.Tasks; 7 8 namespace AES_Dome 9 { 10 class Program 11 { 12 private static string key = "smkldospdosldaaa";//key,可自行修改 13 private static string iv = "0392039203920300"; //偏移量,可自行修改 14 static void Main(string[] args) 15 { 16 string encrytpData = Encrypt("abc", key, iv); 17 Console.WriteLine(encrytpData); 18 19 string decryptData = Decrypt("5z9WEequVr7qtd+WoxV+Kw==", key, iv); 20 Console.WriteLine(decryptData); 21 22 Console.ReadLine(); 23 } 24 public static string Encrypt(string toEncrypt, string key, string iv) 25 { 26 byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key); 27 byte[] ivArray = UTF8Encoding.UTF8.GetBytes(iv); 28 byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt); 29 30 RijndaelManaged rDel = new RijndaelManaged(); 31 rDel.BlockSize = 128; 32 rDel.KeySize = 256; 33 rDel.FeedbackSize = 128; 34 rDel.Padding = PaddingMode.PKCS7; 35 rDel.Key = keyArray; 36 rDel.IV = ivArray; 37 rDel.Mode = CipherMode.CBC; 38 39 ICryptoTransform cTransform = rDel.CreateEncryptor(); 40 byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); 41 42 return Convert.ToBase64String(resultArray, 0, resultArray.Length); 43 } 44 45 public static string Decrypt(string toDecrypt, string key, string iv) 46 { 47 byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key); 48 byte[] ivArray = UTF8Encoding.UTF8.GetBytes(iv); 49 byte[] toEncryptArray = Convert.FromBase64String(toDecrypt); 50 51 // 这里的模式,请保持和上面加密的一样。但源代码里,这个地方并没有修正,虽然也能正确解密。看到博客的朋友,请自行修改。 52 // 这是个人疏忽的地址,感谢@jojoka 的提醒。 53 RijndaelManaged rDel = new RijndaelManaged(); 54 //rDel.Key = keyArray; 55 //rDel.IV = ivArray; 56 //rDel.Mode = CipherMode.CBC; 57 //rDel.Padding = PaddingMode.Zeros; 58 59 rDel.BlockSize = 128; 60 rDel.KeySize = 256; 61 rDel.FeedbackSize = 128; 62 rDel.Padding = PaddingMode.PKCS7; 63 rDel.Key = keyArray; 64 rDel.IV = ivArray; 65 rDel.Mode = CipherMode.CBC; 66 ICryptoTransform cTransform = rDel.CreateDecryptor(); 67 68 byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); 69 70 return UTF8Encoding.UTF8.GetString(resultArray); 71 } 72 } 73 }
二、ECB(Electronic Code Book,电子密码本)模式
是一种基础的加密方式,密文被分割成分组长度相等的块(不足补齐),然后单独一个个加密,一个个输出组成密文。
只需要提供密码即可。
iOS,android,java已调通源码:源码下载
AES在线加解密验证工具: http://www.seacha.com/tools/aes.html