RSA使用X509EncodedKeySpec、PKCS8EncodedKeySpec生成公钥和私钥
privatestaticfinalStringKEY_ALGORITHM="RSA";privatestaticfinalStringPUBLIC_KEY="publicKey";privatestaticfinalStringPRIVATE_KEY="privateKey";publicstaticvoidmain(String[]args)throwsException{MapkeyMap=