In 2004, Professor Wang Xiaoyun of Shandong University in China rushed to the United States to attend the Cryptography Conference, which was the most authoritative academic discussion in the field of cryptography. At the meeting, Wang Xiaoyun directly announced that she and her team had successfully cracked the MD5 password. MD5 encryption technology uses completely irreversible algorithm encryption, which is the fundamental reason for the complexity of this algorithm. The computation of MD5 is as high as 2 to the 80th power. According to the calculation, it will take 100 years to decipher the algorithm even if the world's most advanced supercomputer is used for day and night operation.

Before Wang Xiaoyun successfully cracked it, American experts boasted that MD5 was the safest encryption algorithm in the world, and even directly claimed that it would not be cracked for at least 100 years.