两个实用的方法从Base64字符串生成RSAPublicKey及RSAPrivatekey

     public static RSAPublicKey getRSAPublidKeyBybase64(String base64s) {

         X509EncodedKeySpec keySpec = new X509EncodedKeySpec(CodeUtils.base64Decode(base64s));

         RSAPublicKey publicKey = null;

 　　　　　KeyFactory keyFactory = KeyFactory.getInstance("RSA");

         try {

             publicKey = (RSAPublicKey)keyFactory.generatePublic(keySpec);

         } catch (InvalidKeySpecException var4) {

             LOGGER.error("base64编码=" + base64s + "转RSA公钥失败", var4);

         }

         return publicKey;

     }

     public static RSAPrivateKey getRSAPrivateKeyBybase64(String base64s) {

         PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(CodeUtils.base64Decode(base64s));

         RSAPrivateKey privateKey = null;

         KeyFactory keyFactory = KeyFactory.getInstance("RSA");

         try {

             privateKey = (RSAPrivateKey)keyFactory.generatePrivate(keySpec);

         } catch (InvalidKeySpecException var4) {

             LOGGER.error("base64编码=" + base64s + "转RSA私钥失败", var4);

         }

         return privateKey;

     }