mysql password hash algorithm

Transfer from http://www.smatrix.org/bbs/simple/index.php?t5591.html//////////////////////////////////////////////////////////////////////////////Directory1. PHP hash function and its application2. Symmetric cipher algorithm in PHP and its

It is of great significance to study the encryption and decryption of MySQL database in the course of network attack and defense. Imagine that once you have access to the site's permissions, if you can get the data stored in MySQL, through the

(a) Why do I use hash functions to encrypt passwords If you need to save a password (such as a website user's password), you should consider how to protect the password data, and it is extremely unsafe to write the password directly to the database

How to useCREATE TABLE ' user ' (' ID ' bigint) NOT NULL auto_increment, ' username ' varchar (a) NOT null COMMENT ' username ', ' password ' varchar (+) not NULL COMMENT ' password, encrypted storage ', ' phone ' varchar ' default NULL COMMENT '

There is a business scenario that needs to be compared in 2 tables that exist in table A, and do not exist in table B data. The table structure is as follows:T_settings_backup | CREATE TABLE ' t_settings_backup ' ( ' FID ' bigint () not NULL

MySQL currently has the following types of indexes: Normal index allows the same indexed content to appear (normal) Unique indexes unique can not appear the same value, can have a null value Primary key index Promary key

Understanding MySQL-index and optimization summary, mysql Index Summary Preface: indexes have a crucial impact on the query speed. Understanding indexes is also the starting point for optimizing database performance. Consider the following: Assume

Understanding MySQL-index and optimization is at the beginning: indexes have a crucial impact on the query speed. understanding indexes is also the starting point for database performance tuning. Consider the following: assume that a table in the

Understanding MySQL-index and optimization [Reprinted] bitsCN.com Reprinted from: http://www.cnblogs.com/hustcat/archive/2009/10/28/1591648.html Preface: indexes have a crucial impact on the query speed. understanding indexes is also the starting

Write in front: indexes have a critical impact on the speed of queries, and understanding indexes is also a starting point for database Performance tuning. Consider the following scenario, assuming that a table in the database has 10^6 records, the