加密技术是一种通过数学算法将明文转换为密文的技术，以保护数据的

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【单选题】【消耗次数：1】

① 机密性和完整性

② 所有权和开发权

③ 可读性和可操作性

④ 共享和开放

⑤ 接口和通信

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