这年头找个正经能用的东西那是真难，网上一搜索一大堆，正经能用的没几个，得，最后还是得靠自己，正巧遇上需要AES加解密的地方了，而且还是Java和C#间的相互加解密操作，这里做个备忘
这里采用的加解密使用base64转码方法，ECB模式，PKCS5Padding填充，密码必须是16位，否则会报错哈
模式：Java的ECB对应C#的System.Security.Cryptography.CipherMode.ECB
填充方法：Java的PKCS5Padding对应C#System.Security.Cryptography.PaddingMode.PKCS7
Java和C#版的加解密是互通的，也就是能相互加解密，编码明确指定了采用UTF-8，有需要其他编码方法的请自行扩展
Java版
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package nb.tmall.util; import java.security.NoSuchAlgorithmException; import java.security.SecureRandom; import javax.crypto.*; import javax.crypto.spec.SecretKeySpec; import sun.misc.*; @SuppressWarnings("restriction") public class EncryptUtil { public static String aesEncrypt(String str, String key) throws Exception { if (str == null || key == null) return null; Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key.getBytes("utf-8"), "AES")); byte[] bytes = cipher.doFinal(str.getBytes("utf-8")); return new BASE64Encoder().encode(bytes); } public static String aesDecrypt(String str, String key) throws Exception { if (str == null || key == null) return null; Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(key.getBytes("utf-8"), "AES")); byte[] bytes = new BASE64Decoder().decodeBuffer(str); bytes = cipher.doFinal(bytes); return new String(bytes, "utf-8"); } } |
C#版
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using System; using System.Security.Cryptography; using System.Text; namespace CSharp.Util.Security { /// <summary> /// AES 加密 /// </summary> /// <param name="str"></param> /// <param name="key"></param> /// <returns></returns> public static string AesEncrypt(string str, string key) { if (string.IsNullOrEmpty(str)) return null; Byte[] toEncryptArray = Encoding.UTF8.GetBytes(str); System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged { Key = Encoding.UTF8.GetBytes(key), Mode = System.Security.Cryptography.CipherMode.ECB, Padding = System.Security.Cryptography.PaddingMode.PKCS7 }; System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateEncryptor(); Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); return Convert.ToBase64String(resultArray, 0, resultArray.Length); } /// <summary> /// AES 解密 /// </summary> /// <param name="str"></param> /// <param name="key"></param> /// <returns></returns> public static string AesDecrypt(string str, string key) { if (string.IsNullOrEmpty(str)) return null; Byte[] toEncryptArray = Convert.FromBase64String(str); System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged { Key = Encoding.UTF8.GetBytes(key), Mode = System.Security.Cryptography.CipherMode.ECB, Padding = System.Security.Cryptography.PaddingMode.PKCS7 }; System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateDecryptor(); Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); return Encoding.UTF8.GetString(resultArray); } } } |
from:http://www.cnblogs.com/lzrabbit/p/3639503.html