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Asp. password protection in net, the use of MD5 and SHA1 algorithms| algorithm your home page or you manage the site has a variety of password need to protect, put the password directly in the database or file there are many security risks, so password encryption after storage is the most common practice.

SNMP installation configuration under Linux

Take the installation configuration of Redhat as an example: Compiling and installing First we need to download NET-SNMP source code, select a version, such as the latest version of 5.7.1, the address is as follows:

PHP encryption function principle of DISCUZ forum Program

Kangsheng's Authcode function can be said to make a significant contribution to China's PHP industry. Including Kangsheng's own products, and most Chinese companies using PHP use this function for encryption, Authcode is encrypted and decrypted

From cookies to the Driving School web site to understand the security risks

The source of the loophole: Driving School website System 1.0 Vulnerability Hazard: Get Webmaster Account and password In the domestic Driving School website, 80% is built with the Driving School website System 1.0, and this program is hidden a

Using MD5 encryption in ASP

Encryption when you need to use MD5 encryption: -------------------------------------------------------------------------------- MD5 (encrypted characters) --------------------------------------------------------------------------------

Win8 can not install the music circle how to solve?


Win8 system, the installation of the Paladin 6 before the installation of the music circle, but recently there are many users reflect that the music can not install the circle, resulting in the Paladin 6 can not be installed. So how does that work

PHP source code Analysis of DZX1.5 encryption and decryption function Authcode usage

This article describes the PHP source code analysis of the DZX1.5 encryption and decryption function Authcode usage. Share to everyone for your reference. The specific analysis is as follows: ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

How to solve the duplication problem of uniqid in PHP under high concurrency

The problem with generating token checksums is useful in recent projects. First consider using the Uniqid () function in PHP to generate random strings, but because the function seems to be based on the microsecond time level. In the case of high

Build anti-Virus anti-spam System (III)

hosts = Modify courier Related Settings,/ETC/COURIER/IMAPD: Authmodules= "Authdaemon" imap_capability= "IMAP4rev1 CHILDREN NAMESPACE Thread=orderedsubjectThread=references SORT auth=cram-md5 auth=cram-sha1 IDLE

A simple encryption and decryption code for PHP

  Share a PHP encryption and decryption class, when the user is registered to send mail validation when the estimated use of the code as follows     Code as follows: Class syscrypt{ private $crypt _key= ' ';//key  public

Modify Discuz compatible with your own development pass

Modify Discuz,uchome,ucenter compatible with your own development of the pass recently slightly contact, modify some of the code, to contribute to the key part of it. Modify Discuz,uchome,ucenter compatible with your own development passA few recent

Extended stored procedures using BCB to edit SQL Server2000

This stored procedure is calculated MD5 value, can be used for password authentication encryption. SQL Server's extended stored procedures (Extended Stored Procedure, abbreviated XP) are implemented by registering functions encapsulated in a. dll

ASP encryption function code

Private Const Bits_to_a_byte = 8 Private Const Bytes_to_a_word = 4 Private Const Bits_to_a_word = 32 Private M_lonbits (30) Private M_l2power (30) Private Function LShift (LValue, Ishiftbits) If ishiftbits = 0 Then LShift =

mysql5.0 version Download Address collection

mysql5.0 version is a more classic version, this version of the majority of CMS support is better, but the official website is not easy to find the download address, here Special collation, convenient to need mysql5.0 friend

Authentication Methods for VPN

In addition to VPN authentication using the PPP authentication method, here are a few ways to authenticate a VPN. Chap:chap negotiates a secure form of cryptographic authentication by using MD5, an industry-standard hashing scheme. CHAP uses a

How to use SendMail under the AIX operating system

First, the basic knowledge:SendMail is the most widely used message transfer agent in a UNIX environment, SendMail mail server features powerful but complex configuration, sendmail version upgrades very frequently, The SendMail version number used

Method of installing Rpmforge in CentOS system

Rpmforge is a combination of Dag, dries, and other software packages. They provide CentOS with over 4,000 packages, including MPlayer, Xmms-mp3, and other popular media playback tools. Rpmforge is not part of a Red Hat Linux product or CentOS, but

PHP Write an attachment to send an instance of the program

Program ?Error_reporting (63);Include (' ');/**************************************** * Example of usage.***************************************//**************************************** * Read the file background.gif into* *

Linux password anti-cracking and account File Protection

Linux as a multitasking, multi-user operating system, in the same time period may be used for many users, and the user's management is directly related to the security of the entire system, users need to the password management and account file

Using MD5 transform algorithm to prevent poor lifting (collision) Decipher password

Conversion | algorithm MD5 is the most commonly used cryptographic encryption algorithm in Web applications. Since the MD5 is irreversible, the ciphertext after MD5 calculation can not get the original text through the reverse algorithm.The

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