单选题Why does a digital signature CONTAIN a message digest?为什么数字签名包含一个消息摘要？（）ATo confirm the identity of the receiver 为了确认接收者的身份BTo indicate the encryption algorithm 为了标注加密算法CTo detect any alteration of the message 为了检测对消息的篡改DTo enable transmission in a digital format 为了便于进行数字格式传输
单选题
Why does a digital signature CONTAIN a message digest?为什么数字签名包含一个消息摘要？（）
A
To confirm the identity of the receiver 为了确认接收者的身份
B
To indicate the encryption algorithm 为了标注加密算法
C
To detect any alteration of the message 为了检测对消息的篡改
D
To enable transmission in a digital format 为了便于进行数字格式传输
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名词解释题digital signature数字签名