Teacher's login account: faculty number, initial password:111111.

Student login account: student number, initial password: 666666.

Vocational Education Yun Tong Classroom is an educational App under Hubei Vocational Education Technology Co., Ltd. ..

20 19 12.24 was put on record by the Ministry of Education, with the record number of Jiao APP North No.4200026.

Cryptographic synthesis

Password is a symbol compiled according to a specific law, which is used to transmit the information of both parties. In other words, a password is a series of symbols that hide the real content. It changes the information expressed by an open and standard information code into an information code that can't be read by anyone except the two communication parties through a transformation method. This unique information code is a password.

Cryptography is a science with a long history. In the war between ancient Greece and the Persian Empire, passwords were used to transmit secret information. In modern wars, the transmission of information and the command of war are inseparable from passwords, and so is the diplomatic struggle.