android RSA公钥加密 公钥解密，解决乱码问题

/** * <p> * 公钥解密 * </p> * * @param encryptedData 已加密数据 * @param  publicKey  公钥 （无需base64编码，靠，网上的代码为毛说要base64编码，坑啊哥哥们） * @return  （已解决解密乱码问题） * @throws Exception */public static byte[] decryptByPublicKey(byte[] encryptedData，String publicKey )        throws Exception {    X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);    KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);    Key publicK = keyFactory.generatePublic(x509KeySpec);    Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");    cipher.init(Cipher.DECRYPT_MODE, publicK);    int inputLen = encryptedData.length;    ByteArrayOutputStream out = new ByteArrayOutputStream();    int offSet = 0;    byte[] cache;    int i = 0;    // 对数据分段解密    while (inputLen - offSet > 0) {        if (inputLen - offSet > MAX_DECRYPT_BLOCK) {            cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK);        } else {            cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet);        }        out.write(cache, 0, cache.length);        i++;        offSet = i * MAX_DECRYPT_BLOCK;    }    byte[] decryptedData = out.toByteArray();    out.close();    return decryptedData;}

/** * <p> * 公钥加密 * </p> * * @param data      源数据 * @param * @return * @throws Exception */public static byte[] encryptByPublicKey(byte[] data，String publicKey)        throws Exception {    byte[] keyBytes = Base64.decode(publicKey, Base64.DEFAULT);    X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);    KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);    Key publicK = keyFactory.generatePublic(x509KeySpec);    // 对数据加密    Cipher cipher = Cipher.getInstance("RSA/None/PKCS1Padding");    cipher.init(Cipher.ENCRYPT_MODE, publicK);    int inputLen = data.length;    ByteArrayOutputStream out = new ByteArrayOutputStream();    int offSet = 0;    byte[] cache;    int i = 0;    // 对数据分段加密    while (inputLen - offSet > 0) {        if (inputLen - offSet > MAX_ENCRYPT_BLOCK) {            cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK);        } else {            cache = cipher.doFinal(data, offSet, inputLen - offSet);        }        out.write(cache, 0, cache.length);        i++;        offSet = i * MAX_ENCRYPT_BLOCK;    }    byte[] encryptedData = out.toByteArray();    out.close();    return encryptedData;}

注：本方法中base64为util包下  
 android.util.Base64;
另外：方法中公钥 为"ASDFG"这种  ，网上有好多公钥前后有---BIGIN   END—— 这种，在本文中并不适用。
本人菜鸟，不知道问什么，求告知