Asymmetric and symmetric ciphers differ in which of the following way（s）？ （）
- A、Asymmetric ciphers use pre-shared keys
- B、Symmetric ciphers are faster to compute
- C、Asymmetric ciphers are faster to compute
- D、Asymmetric ciphers use public and private
正确答案:B,D
答案解析:有
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