小编PyD*_*SRS的帖子

我得到以下错误,我有点卡住:线程"主"中的异常

java.security.InvalidKeyException: Illegal key size or default parameters
at javax.crypto.Cipher.checkCryptoPerm(Cipher.java:1011)
                at javax.crypto.Cipher.implInit(Cipher.java:786)
                at javax.crypto.Cipher.chooseProvider(Cipher.java:849)
                at javax.crypto.Cipher.init(Cipher.java:1213)
                at javax.crypto.Cipher.init(Cipher.java:1153)
                at net.nakou.indie.wtext.engineClass.Session.cryptString(Session.java:52)

我被困了,因为我发现的所有答案都谈到了Java 密码学扩展(JCE),它通常包含在android SDK中.所以我认为我的问题不是这个问题.

我一定忘记了什么,但我找不到什么.也许我的代码是错误的(这是我在Java中使用加密技术的第一种方法,我不是专家,以下代码主要是教程的一些副本).

我使用此代码来加密和解密字符串:

public String cryptString(String s) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, UnsupportedEncodingException, BadPaddingException, IllegalBlockSizeException {
    byte[] KeyData = this.cryptKey.getBytes();
    SecretKeySpec KS = new SecretKeySpec(KeyData, "Blowfish");
    Cipher cipher = Cipher.getInstance("Blowfish");
    cipher.init(Cipher.ENCRYPT_MODE, KS);
    String ret = new String(cipher.doFinal(s.getBytes("UTF-8")));
    return ret;
}

public String decryptString(byte[] s) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
    byte[] KeyData = this.cryptKey.getBytes();
    SecretKeySpec KS = …