search
HomeDatabaseMysql TutorialIn-depth analysis of MySQL password encryption method

With the development of the Internet, MySQL, as an open source relational database management system, is widely used in various applications. One of the important security issues is the encryption and storage of MySQL user passwords. So, what are the methods for MySQL password encryption? This article will give you an in-depth analysis.

MySQL password storage method

Before understanding the MySQL password encryption method, let’s first understand the storage method of MySQL password. Before MySQL version 5.7, the one-way hash algorithm (SHA1) was used to encrypt user passwords and store them in the authentication_string field in the mysql.user table. After version 5.7, MySQL proposed to change to use a new password hash (caching_sha2_password) for encryption to improve security.

MySQL password encryption method

  1. SHA1

SHA1 is a one-way hash algorithm that can convert user passwords into fixed-length hashes value, and the hash value generated by the same plaintext password is always the same. This algorithm is commonly used in security fields such as digital signatures and message authentication codes. The syntax of the SHA1 function is as follows:

SELECT SHA1('password');

However, because the algorithm is one-way and does not add salt, it is easy to be cracked by brute force. Therefore, MySQL no longer uses this algorithm for password encryption after version 5.7.

  1. MD5

MD5 is also a one-way hash algorithm that is currently widely used in the development field. Although the MD5 algorithm has been cracked in some cases, it is secure enough for ordinary password encryption. Similarly, using the MD5 function to encrypt user passwords also risks being cracked by brute force.

SELECT MD5('password');

  1. SHA2

SHA2 is an enhanced version of SHA1 and has higher security. The SHA2 function accepts two parameters, the first parameter is the password plaintext, the second parameter is the salted string, and returns the salted password hash value.

SELECT SHA2('password123','salthere');

When using the SHA2 function for encryption, the choice of salted string is very important, because the more complex the salted string, The harder it is to crack.

  1. PASSWORD

PASSWORD is a built-in function in MySQL that can encrypt user passwords in a one-way hash. The PASSWORD function uses a hash function composed of a salted string to encrypt the plaintext password and store it in the authentication_string field.

SELECT PASSWORD('password');

However, this method is also easy to be cracked by brute force.

  1. Caching_sha2_password

Caching_sha2_password is a new password encryption method added after MySQL version 5.7. It uses the SHA-256 algorithm. When using Caching_sha2_password for password encryption, you first need to enable the encryption feature:

SET GLOBAL validate_password.policy=LOW; SET GLOBAL validate_password.length=6; ALTER USER 'username'@'localhost' IDENTIFIED BY 'password' ;

Among them, the validate_password.policy parameter specifies the password policy, and the validate_password.length parameter specifies the minimum length of the encrypted password.

The password hash value encrypted using Caching_sha2_password is stored in the authentication_string field of the mysql.user table. Compared with previous password encryption methods, Caching_sha2_password can better prevent brute force cracking and dictionary attacks.

Summary

There are many MySQL password encryption methods, such as SHA1, MD5, SHA2, PASSWORD and Caching_sha2_password, etc. When choosing an appropriate encryption method, you need to make a choice based on specific application scenarios and requirements. At the same time, when encrypting and storing user passwords, you also need to pay attention to the selection of salt strings and the configuration of encryption strength to better ensure the security of passwords.

The above is the detailed content of In-depth analysis of MySQL password encryption method. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
MySQL: Essential Skills for Beginners to MasterMySQL: Essential Skills for Beginners to MasterApr 18, 2025 am 12:24 AM

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL: Structured Data and Relational DatabasesMySQL: Structured Data and Relational DatabasesApr 18, 2025 am 12:22 AM

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL: Key Features and Capabilities ExplainedMySQL: Key Features and Capabilities ExplainedApr 18, 2025 am 12:17 AM

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

The Purpose of SQL: Interacting with MySQL DatabasesThe Purpose of SQL: Interacting with MySQL DatabasesApr 18, 2025 am 12:12 AM

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

MySQL for Beginners: Getting Started with Database ManagementMySQL for Beginners: Getting Started with Database ManagementApr 18, 2025 am 12:10 AM

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA

MySQL's Role: Databases in Web ApplicationsMySQL's Role: Databases in Web ApplicationsApr 17, 2025 am 12:23 AM

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

MySQL: Building Your First DatabaseMySQL: Building Your First DatabaseApr 17, 2025 am 12:22 AM

The steps to build a MySQL database include: 1. Create a database and table, 2. Insert data, and 3. Conduct queries. First, use the CREATEDATABASE and CREATETABLE statements to create the database and table, then use the INSERTINTO statement to insert the data, and finally use the SELECT statement to query the data.

MySQL: A Beginner-Friendly Approach to Data StorageMySQL: A Beginner-Friendly Approach to Data StorageApr 17, 2025 am 12:21 AM

MySQL is suitable for beginners because it is easy to use and powerful. 1.MySQL is a relational database, and uses SQL for CRUD operations. 2. It is simple to install and requires the root user password to be configured. 3. Use INSERT, UPDATE, DELETE, and SELECT to perform data operations. 4. ORDERBY, WHERE and JOIN can be used for complex queries. 5. Debugging requires checking the syntax and use EXPLAIN to analyze the query. 6. Optimization suggestions include using indexes, choosing the right data type and good programming habits.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
Will R.E.P.O. Have Crossplay?
1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools