Course Intermediate  11273

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17597

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Advanced  11309

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

Course Introduction：PHP provides encryption and decryption technology to protect sensitive information in web development. Its built-in functions include md5(), sha1() and hash(), which are used to generate irreversible hash values. Third-party libraries (such as PHPseclib, sodium_compat) can also be used to implement higher levels of encryption, such as symmetric and asymmetric encryption. In practice, user passwords should be stored as encrypted hashes rather than clear text to prevent passwords from being exposed in the event of a database breach.

2024-05-02 comment 0  1020

Course Introduction：Usage examples of PHP high-order data structures: array: stores an ordered collection of key-value pairs; list: stores an ordered collection of numeric key data; set: stores a collection of unique values, unordered; heap: a priority queue, elements are sorted by priority; Hash table: A collection of key-value pairs to quickly find key values. Practical case: User database, using arrays to store user data, and processing data through array functions, such as finding John Doe's email address.

2024-05-07 comment 0  857

Course Introduction：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.

2023-07-11 comment 0  4594

Course Introduction：PHP Data Filtering: Effective Handling of Password Encryption and storage of passwords is one of the key protection measures for user accounts, so it is very important that passwords are encrypted and stored. In PHP, there are several methods that can be used to encrypt and store passwords. This article will introduce an effective method to filter and process passwords. First, we need to encrypt the password using an appropriate encryption algorithm. In PHP, one of the most commonly used encryption algorithms is bcrypt. The bcrypt algorithm is a more efficient algorithm than algorithms such as MD5 and SHA-1.

2023-07-29 comment 0  1089

Course Introduction：PHP encryption extension library—Mhash extension library What is Mhash extension library: Mhash is an irreversible PHP encryption extension library based on the principle of discrete mathematics. It is not enabled by default. mhash can be used to create verification values, message digests, message authentication codes, and save key information (such as passwords) without the original text. 1. Mhash extension library installation The installation of the Mhash library is similar to the installation of the Mcrypt extension library. I won’t go into more details here. You can refer to the previous article "PHP Encryption Extension Library—Mcrypt Extension Library...

2017-06-12 comment 0  1741