What encryption method is mysql password?

Mysql password is SHA-1 encryption method. It is an encryption method based on a hash algorithm, which converts the entered password into a hash value of 40 characters in length. The hash value is unique and irreversible. In MySQL, when user passwords are stored, what is actually stored is a hash value rather than a clear text password. Even if the database is attacked and the password file is leaked, the hacker will not be able to know the user's real password because it cannot be reversed from the hash value. Push out the original password.

The operating system of this tutorial: Windows 10 system, mysql version 8.0, Dell G3 computer.

MySQL password is encrypted using SHA-1 (Secure Hash Algorithm 1) encryption method.

SHA-1 is an encryption method based on a hash algorithm, which converts the entered password into a 40-character hash value. The hash value is unique and irreversible.

In MySQL, when a user password is stored, its hash value is actually stored instead of the clear text password. The advantage of this is that even if the database is attacked and the password file is leaked, the hacker will not be able to learn the user's real password because they cannot deduct the original password from the hash value.

The process of using SHA-1 for password encryption is as follows:

1. When a user registers or changes a password, MySQL first converts the password entered by the user into plain text format and parsed.

2. Next, MySQL will apply the SHA-1 hash algorithm to the plain text password.

3. The hash algorithm converts the plain text password into a fixed-length hash value.

4. Finally, MySQL stores the hash value in the user's account record.

When a user logs in, MySQL will follow the following steps to verify their password:

1. When the user enters a password for authentication, MySQL will calculate the SHA of the entered password -1 hash value.

2. MySQL will then compare the hash value of the password entered by the user with the password hash value stored in the user account record.

3. If the two hash values ​​match, the user password verification is successful and you can continue to access the database.

SHA1 is a Hash algorithm with high encryption strength, which can encrypt the password into a 40-character long hexadecimal string. SHA2 is an improved version of SHA1 that can encrypt passwords into a 512-bit hexadecimal string. MD5 is a relatively simple Hash algorithm that can encrypt passwords into a 32-bit hexadecimal string.

In order to protect the security of user data, MySQL recommends that users use the SHA2 algorithm for password encryption. At the same time, MySQL also supports the use of salt (Salt) to improve password security. Salting means adding some random strings to the original password, and then performing Hash calculations. In this way, even if a hacker obtains the MySQL system table, he cannot deduce the original password through the hash value.

Although SHA-1 is a relatively old hash algorithm, it is not considered very secure and is susceptible to brute force or collision attacks. To improve database security, it is recommended to use stronger encryption algorithms such as SHA-256 or SHA-512.

MySQL provides some more secure encryption plug-ins and authentication methods, such as MySQL Native Password Plugin, MySQL SHA256 Password Plugin, etc. These plugins use stronger hashing algorithms, providing greater security and the ability to protect user passwords.

In short, MySQL passwords are encrypted using the SHA-1 hashing algorithm. Although it is an older encryption algorithm, it can provide some security. In order to increase the security of the database, it is recommended to use stronger and more secure encryption algorithms

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