单选题Which of the following best describes a hash function？（）AAn irreversible fast encryption methodBA reversible fast encryption methodCA reversible value computed from a piece of data and used to detect modificationsDAn irreversible value computed froma piece of data and used to detect modificationsEA table inwhich values are stored for efficient retrieval.
单选题
Which of the following best describes a hash function？（）
A
An irreversible fast encryption method
B
A reversible fast encryption method
C
A reversible value computed from a piece of data and used to detect modifications
D
An irreversible value computed froma piece of data and used to detect modifications
E
A table inwhich values are stored for efficient retrieval.
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