Building strong passwords based on information theory
Jianmin Li · Journal of Shenzhen Institute of Information Technology · 2007
A password is the string of characters entered by a user to verify his or her identity to the network.The system compares the code against a stored list of authorized passworld and users.If the code is legitimate,the system allows the user access at whatever security level has been approved for the owner of the password.Ideally a password is a combination of text,numbers,and punctuation or other characters thal cannot be guessed at or easily cracked by intruders,It is one of the most important ways to protect computer information security,Passwords could be classified as weak and strong.How to build a strong password is an unavoidable consideration to guarantee computer information security.