hash encryption

Objective The previous article recorded how to use HTTPS (SSL) in Kestrel, which is actually used in our current project. Data security is often a part of the developer's easy to overlook, including myself. In the past two years there have been a

1 Find character position function: Strpos ($str, Search,[int]): Find the first position of search in $str starting from int; Stripos ($str, search,[int]): function returns the position where the string first appears in another string. This function

DEBUGLZQ on the Internet search related file encryption program, found that the basic is for "character creation", "text" encryption and decryption. For video files, pictures and other general files encryption and decryption procedures are few, so

Technology StackVue.js Main frame Vuex state management Vue-router Routing Management General Process In the general login process, a front-end scheme is: Check the status: When the page or route changes to check whether there is a login status

Block chain knowledge level Four examination, examination time 30 minutes, total score 100 points, please seriously answer, the topic person and Proctor Teacher: Gao Zhihao, please reprint note, thank you for your support. One, single topic (5

addcslashes-to add a backslash escape character for some characters inside a string Addslashes-the characters inside a string in a specified manner bin2hex-converts binary data to hexadecimal representations alias function for Chop-rtrim ()

This article includes the following: 1, cryptography Application Block of a simple introduction (refer to the English document with its own) 2, Configure Cryptography Application Block (this article to configure symmetric encryption Provider as an

Users, Groups, permissionsSecurity contextPermissionsR,w,xFile:R: Readable, you can view the contents of the file using commands like CatW: writable, can edit or delete this fileX: Executable, can be submitted to the kernel at the command prompt as

Permissions:r,w,xfiles:R, readable ,w can be edited or deleted , X, executable, run command to kernel at command promptdirectory:r can perform LS on this directory to list all directories. W, can create files in this directory , x available CD

Encryption method:Symmetric encryption: Encrypt and decrypt using the same passwordPublic Key cryptography: each password appears in pairs, one for the private key (secret key) and one for the public keyOne-way encryption, hash encryption:

I. User's permissions1. For documents:R: Readable, you can view the contents of the file using commands like CatW: writable, can edit or delete this fileX: Executable, exacutable, can be submitted to the kernel at the command prompt as a command to

Users, Groups, permissionsSecurity context (Secure):Permissions:R,w,xFile:R: Readable, you can use similar commands such as cat to view the contents of the file;W: writable, can edit or delete this file;X: Executable, exacutable, can be submitted to

7.1, User Configuration files7.2, user management related files7.3, user management commands7.4, user Group Management Command Delete user Userdel [[email protected]~]# Userdel [-r] User name//Be sure to add-R to delete home directoriesIn addition

One, user filesFiles:/etc/passwdThis file records the user's user name, user ID, owning group, home directory, Shell information:[[email protected] ~]# tail-n3/etc/passwdruanwenwu:x:1003:1003::/home/ruanwenwu:/bin/ bashapache:x:

Week Five Lesson NotesI. installation of the application software1. Know the software: |libmp3lame0|-3.99.3-23|. el7|. x86_64|. RpmSoftware name   software version applicable system 64-bit Red hat applicable software2. How to install the

Week Five Lesson NotesI. installation of the application software1. Know the software: |libmp3lame0|-3.99.3-23|. el7|. x86_64|. RpmSoftware name   software version applicable system 64-bit Red hat applicable software2. How to install the

I. The process of user login verification1. Find out if there is an account entered in/etc/passwd? If not then jump out, if any, then the account corresponding UID and GID (in/etc/group) read out, in addition, the account's home directory and shell

Learning resources from: www.magedu.comMistakes are unavoidable in the learning process, and if found, they are also pointed out by the great gods.Some of the sample operations are related to historical operations, and if the previous example

The more server security requirements of servers, the more need to establish a reasonable level of user rights and server operating norms. In Linux, user information is viewed and modified primarily through user profiles .1 User information file (1)

Seven field explanations in the/etc/passwd directory Account user name is also called login name Password encrypted user name is typically x true user encrypted password under/etc/shadow file ID of UID User Group ID of the GID