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我使用下面的代碼來創建一個128位AES加密,如何使用AES加密128位字符串創建包含128 0的
String initializer = "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000";
byte[] initializer2 = new BigInteger(initializer, 2).toByteArray();
String encrypt = encrypt(binary_string_firsthalf, initializer2);
public static String encrypt(String plainText, byte[] key) {
try {
SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
byte[] cipherText = cipher.doFinal(plainText.getBytes("UTF8"));
String encryptedString = new String(Base64.encode(cipherText));
return encryptedString;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
但代碼返回一個例外,說無效AES密鑰長度。 如何使用128 0創建密碼。