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为了保障数据的存储和传输安全,需要对一些重要数据进行加密。由于对称密码算法(15),因此特别适合对大量的数据进行加密。国际数据加密算法IDEA的密钥长度是(16)位。

  • A.比非对称密码算法更安全
  • B.比非对称密码算法密钥长度更长
  • C.能同时用于身份认证
  • D.比非对称密码算法效率更高
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