One such key is used for creating a digital signature or transforming data into a seemingly unintelligible form, and the other one for verifying a digital signature or returning the message to its original form.
其中一套钥匙用于产生数字签字或将数据转变为表面上不可懂的形态，另一套钥匙用来核查数字签字或将电文还原为原有形态。