试题详情
- 单项选择题The key lengths for DES and 3DES， respectively， are：（）
A、 128 bits and 256 bits
B、 128 bits and 384 bits
C、 1024 bits and 3072bits
D、 64 bits and 192 bits
E、 56 bits and 168 bits
F、 128 bytes and 384 bytes
- E
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