皮皮学，免费搜题
登录
搜题
【单选题】
用户B收到用户A带数字签名的消息M,为了验证M的真实性,首先需要从CA 获取用户A的数字证书,验证该证书的真伪后,利用 ( ) 验证M 的真实性。A.
CA 的公钥
B.
B 的私钥
C.
A 的公钥
D.
B 的公钥
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】Life is difficult. It is a great truth because once we truly understand and accept it, then life is no longer difficult. Most do not fully see this truth. Instead they complain about their problems an...
【简答题】Life Is Difficult What makes life difficult is that the process of facing and solving problems is a painful one. Problems cause______（31）, anger, fear or despair. These are______（32）feelings, often as...
【简答题】Life is difficult. But life is no longer difficult when we truly understand and accept it. Most people do not fully see this truth. Instead, they complain about their problems and difficulties. They t...
【简答题】After the flood, life in the region is (extreme) ______ difficult.
【单选题】________ some students are not aware of is ________ difficult life can be if they are not devoted to study.
A.
That; how
B.
Which; what
C.
What; what
D.
What; how
【简答题】Life is difficult. It is a great truth because once we truly understand and accept it, then life is no longer difficult. Most do not fully see this truth. Instead they complain(抱怨) about their problem...
【简答题】After the flood, life was (extreme) ________ difficult for the farmers in this area.
【单选题】You can't imagine ______ in those days.
A.
how difficult my life was
B.
how my life was difficult
C.
how was my life difficult
D.
my life was how difficult
相关题目：
参考解析：
知识点：
题目纠错 0
发布
