有关使用JCE类执行此操作的标准方法，请参见下面的代码。
import javax.crypto.Cipher;import javax.crypto.SecretKey;import javax.crypto.spec.SecretKeySpec;import javax.xml.bind.DatatypeConverter;public class EncryptionExample { public static void main(String[] args) throws Exception { final String keyHex = "00000000000000000000000000123456"; final String plaintextHex = "00000000000000000000000000000000"; SecretKey key = new SecretKeySpec(DatatypeConverter .parseHexBinary(keyHex), "AES"); Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding"); cipher.init(Cipher.ENCRYPT_MODE, key); byte[] result = cipher.doFinal(DatatypeConverter .parseHexBinary(plaintextHex)); System.out.println(DatatypeConverter.printHexBinary(result)); }}印刷品：
3FA9F2A6E4C2B440FB6F676076A8BA04
