我想使用我自己的密鑰使用AES加密字符串。但是我在密鑰的位長度上遇到了麻煩。您能否查看我的代碼并查看需要修復(fù)/更改的內(nèi)容。public static void main(String[] args) throws Exception {    String username = "bob@google.org";    String password = "Password1";    String secretID = "BlahBlahBlah";    String SALT2 = "deliciously salty";    // Get the Key    byte[] key = (SALT2 + username + password).getBytes();    System.out.println((SALT2 + username + password).getBytes().length);    // Need to pad key for AES    // TODO: Best way?    // Generate the secret key specs.    SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");    // Instantiate the cipher    Cipher cipher = Cipher.getInstance("AES");    cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);    byte[] encrypted = cipher.doFinal((secrectID).getBytes());    System.out.println("encrypted string: " + asHex(encrypted));    cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);    byte[] original = cipher.doFinal(encrypted);    String originalString = new String(original);    System.out.println("Original string: " + originalString + "\nOriginal string (Hex): " + asHex(original));}現(xiàn)在，我得到一個(gè)異?！?無效的AES密鑰長度：86個(gè)字節(jié) ”。我是否需要墊鑰匙？我該怎么辦？還需要為ECB或CBC設(shè)置任何內(nèi)容嗎？