There are two login accounts for the integrated office platform: administrator account and user account: 1. Administrator account: the administrator account created by the system by default for customers, which has the highest management authority. 2. User account: use the mobile phone number as the login account of Tianyi mobile phone user account, and the initialization password is: 123456, and the password is forced to be changed when logging in for the first time.

Cryptography is one of the most basic and core means to protect information security. Cryptography has moved from the diplomatic and military fields to the general public. It is an interdisciplinary subject which combines mathematics, computer science, electronics and communication.