Java AES ECB NoPadding

java_aes_ecb_nopadding

// 加密
    public static byte[] ecbEncrypt(byte sSrc[], String sKey) throws Exception {
        if (sKey == null) {
            System.out.print("Key为空null");
            return null;
        }

        // 判断Key是否为16倍数
        if (sKey.length() % 16 != 0) {
            System.out.print("Key长度不是16倍数");
            return null;
        }

        byte[] raw = sKey.getBytes("utf-8");
        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
        Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");//"算法/模式/补码方式"
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
        byte[] encrypted = cipher.doFinal(sSrc);

        return encrypted;
    }

    // 解密
    public static byte[] ecbDecrypt(byte sSrc[], String sKey) throws Exception {
        try {
            // 判断Key是否正确
            if (sKey == null) {
                System.out.print("Key为空null");
                return null;
            }

            // 判断Key是否为16倍数
            if (sKey.length()%16 != 0) {
                System.out.print("Key长度不是16倍数");
                return null;
            }

            byte[] raw = sKey.getBytes("utf-8");
            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
            cipher.init(Cipher.DECRYPT_MODE, skeySpec);
            try {
                return cipher.doFinal(sSrc);
            } catch (Exception e) {
                System.out.println(e.toString());
                return null;
            }
        } catch (Exception ex) {
            System.out.println(ex.toString());
            return null;
        }
    }