Java, C # bilingual version of AES Plus decryption example

These days to find a serious can use things that is really difficult, on-line search a big pile, serious can use few, get, finally still have to rely on their own, happened to meet the need to AES plus decryption place, but also Java and C # Mutual decryption operation, here to do a memo

Here the use of encryption and decryption using the Base64 transcoding method, the ECB mode, pkcs5padding fill, password must be 16 bits, otherwise it will be error ha

Mode: The ECB of Java corresponds to C # System.Security.Cryptography.CipherMode.ECB

Fill method: Java pkcs5padding corresponds to C#SYSTEM.SECURITY.CRYPTOGRAPHY.PADDINGMODE.PKCS7

Java and C # version of the encryption and decryption is interoperability, that is, can be decrypted with each other, the code explicitly specifies the use of UTF-8, there is need for other coding methods, please expand themselves

Java Edition

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) RET        Urn 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 # Edition

Using system;using system.security.cryptography;using system.text;namespace csharp.util.security{//<summar Y>//AES encryption//</summary>//<param name= "str" ></param>//<para M name= "key" ></param>///<returns></returns> public static string Aesencrypt (String St R, 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 decryption//</summary>//<param name= "str" ></param&        Gt <param name= "key" ></param>///<returns></returns> public static string Aesdecry PT (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); }    }}

Java, C # bilingual version of AES Plus decryption example