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How long does it usually take to calculate a digital signature?
Five days. Because digital signature belongs to asymmetric encryption, asymmetric encryption depends on complex mathematical operations, including large number multiplication, large number and simulation. It took 5 days. Digital signature (also known as public key digital signature) is a digital string that can only be generated by the sender of information, and others cannot forge it. This number string is also an effective proof of the authenticity of the information sent by the information sender.