AES encryption generates random key solutions under Linux

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 PackageCom.segerp.tygl.weixin.common;Importjava.io.UnsupportedEncodingException;Importjava.security.GeneralSecurityException;ImportJava.security.SecureRandom;ImportJavax.crypto.Cipher;ImportJavax.crypto.KeyGenerator;ImportJavax.crypto.SecretKey;ImportJavax.crypto.spec.SecretKeySpec;/*** String encryption and decryption class **/ Public classAesstrutils {//private static final String Secretkey = "f0d7432cfdb62e21f8df70cf47f06948";    Private Static FinalString Secretkey = "Bb6d93b3bd1fb173ddadb78748e0c6d3";  Public Static voidMain (string[] args)throwsException {//EncryptString encryptresultstr = Encryptstr ("123", Secretkey); System.out.println ("After encryption:" +encryptresultstr); //decryptionString Decryptresultstr =decryptstr (Encryptresultstr, Secretkey); System.out.println ("After decryption:" +decryptresultstr); }    /*** String Encryption * *@paramSRCSTR * Encrypt String *@paramPassword * Encryption key **/     Public Staticstring Encryptstr (string srcstr, string password) {byte[] Encryptresult =Encryptdata_aes (srcstr, password); String Encryptresultstr=parsebyte2hexstr (Encryptresult); returnEncryptresultstr; }    /*** String Decryption * *@paramSrcstr * Decrypting a String *@paramPassword * Encryption key **/     Public Staticstring Decryptstr (string srcstr, String password) {string ReturnValue= ""; Try {            byte[] Decryptfrom =Parsehexstr2byte (SRCSTR); byte[] Decryptresult =Decryptdata_aes (decryptfrom, password); ReturnValue=NewString (Decryptresult, "Utf-8"); } Catch(unsupportedencodingexception e) {e.printstacktrace (); }        returnreturnvalue; }    /*** Convert binary to 16 binary * *@paramBUF *@return     */    Private StaticString Parsebyte2hexstr (bytebuf[]) {StringBuffer SB=NewStringBuffer ();  for(inti = 0; i < buf.length; i++) {String hex= Integer.tohexstring (Buf[i] & 0xFF); if(hex.length () = = 1) {hex= ' 0 ' +Hex;        } sb.append (Hex.touppercase ()); }        returnsb.tostring (); }    /*** Encryption * *@paramcontent * What you need to encrypt *@paramPassword * Encrypted password *@return     */    Private Static byte[] Encryptdata_aes (string content, string password) {Try {            //Secretkey secretkey = getKey (password); //byte[] Encodeformat = secretkey.getencoded ();            byte[] Encodeformat =parsehexstr2byte (password); Secretkeyspec Key=NewSecretkeyspec (Encodeformat, "AES"); Cipher Cipher= Cipher.getinstance ("AES");//Create a password device            byte[] bytecontent = Content.getbytes ("Utf-8"); Cipher.init (Cipher.encrypt_mode, key);//Initialize            byte[] result =cipher.dofinal (bytecontent); returnResult//Encrypt}Catch(Exception e) {e.printstacktrace (); }        return NULL; }    /*** Convert 16 binary to binary * *@paramHexstr *@return     */    Private Static byte[] Parsehexstr2byte (String hexstr) {if(Hexstr.length () < 1)            return NULL; byte[] result =New byte[Hexstr.length ()/2];  for(inti = 0; I < Hexstr.length ()/2; i++) {            intHigh = Integer.parseint (Hexstr.substring (i * 2, I * 2 + 1), 16); intLow = Integer.parseint (Hexstr.substring (i * 2 + 1, I * 2 + 2),                    16); Result[i]= (byte) (High * 16 +Low ); }        returnresult; }    /*** Generate the key for the specified string * *@paramSecret the character to generate the key *@returnSecretkey the generated key *@throwsgeneralsecurityexception*/    Private StaticSecretkey GetKey (String secret)throwsgeneralsecurityexception {Try{keygenerator _generator= Keygenerator.getinstance ("AES"); SecureRandom SecureRandom= Securerandom.getinstance ("Sha1prng");                Securerandom.setseed (Secret.getbytes ()); _generator.init (128, SecureRandom); return_generator.generatekey (); }  Catch(Exception e) {Throw NewRuntimeException ("Initialization key exception occurred"); }      }    /*** Decryption * *@paramcontent * What to decrypt *@paramPassword * Decryption key *@return     */    Private Static byte[] Decryptdata_aes (byte[] content, String password) {        Try {            //Secretkey secretkey = getKey (password); //byte[] Encodeformat = secretkey.getencoded ();            byte[] Encodeformat =parsehexstr2byte (password); Secretkeyspec Key=NewSecretkeyspec (Encodeformat, "AES"); Cipher Cipher= Cipher.getinstance ("AES");//Create a password deviceCipher.init (Cipher.decrypt_mode, key);//Initialize            byte[] result =cipher.dofinal (content); returnResult//Encrypt}Catch(Exception e) {e.printstacktrace (); }        return NULL; }}

Getkey This method is not used later, because the method that is provided on the web is still going to change the seed generated under Linux.
I was thinking, anyway, to provide the seed, in the Windows environment, generate a key, the generated key as a seed, anyway, the generated key will not change
In the Linux environment to try a bit, it can be done, do it!

AES encryption generates random key solutions under Linux