Java, C # bilingual version of AES Plus decryption example

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

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

 PackageNb.tmall.util;Importjava.security.NoSuchAlgorithmException;ImportJava.security.SecureRandom;ImportJavax.crypto.*;ImportJavax.crypto.spec.SecretKeySpec;ImportSun.misc.*; @SuppressWarnings ("Restriction") Public classEncryptutil { Public StaticString Aesencrypt (String str, string key)throwsException {if(str = =NULL|| Key = =NULL)return NULL; Cipher Cipher= Cipher.getinstance ("aes/ecb/pkcs5padding"); Cipher.init (Cipher.encrypt_mode,NewSecretkeyspec (Key.getbytes ("Utf-8"), "AES")); byte[] bytes = cipher.dofinal (str.getbytes ("Utf-8")); return NewBase64encoder (). Encode (bytes); }     Public StaticString Aesdecrypt (String str, string key)throwsException {if(str = =NULL|| Key = =NULL)return NULL; Cipher Cipher= Cipher.getinstance ("aes/ecb/pkcs5padding"); Cipher.init (Cipher.decrypt_mode,NewSecretkeyspec (Key.getbytes ("Utf-8"), "AES")); byte[] bytes =NewBase64decoder (). Decodebuffer (str); Bytes=cipher.dofinal (bytes); return NewString (Bytes, "Utf-8"); }}

C # Edition

usingSystem;usingSystem.Security.Cryptography;usingSystem.Text;namespacecsharp.util.security{/// <summary>        ///AES Encryption/// </summary>        /// <param name= "str" ></param>        /// <param name= "key" ></param>        /// <returns></returns>         Public Static stringAesencrypt (stringStrstringkey) {            if(string. IsNullOrEmpty (str))return NULL; Byte[] Toencryptarray=Encoding.UTF8.GetBytes (str); System.Security.Cryptography.RijndaelManaged RM=NewSystem.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); returnConvert.tobase64string (Resultarray,0, resultarray.length); }        /// <summary>        ///AES Decryption/// </summary>        /// <param name= "str" ></param>        /// <param name= "key" ></param>        /// <returns></returns>         Public Static stringAesdecrypt (stringStrstringkey) {            if(string. IsNullOrEmpty (str))return NULL; Byte[] Toencryptarray=convert.frombase64string (str); System.Security.Cryptography.RijndaelManaged RM=NewSystem.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); returnEncoding.UTF8.GetString (resultarray); }    }}

Java, C # bilingual version of AES Plus decryption example