Php How To Encrypt Password

Recent learning URL jump when new into three PHP encryption and decryption function is very good, looks like the discuz ... Use these encryption to decrypt the reason is because sometimes their own URL address was acquired after you want to break inside the value of the content you must know your key, no key, he should be broken for a while to know the content of your URL. Pack them into a file called fun.php bar <?php function Passport_encrypt ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall 　　A lot of hacker intrusion personal website is an important way to get the administrator account and password through the SQL injection vulnerability, and then openly into your management backstage, upload asp or PHP Trojan Horse, and then the right administrator or do something else. But a little understanding of hashing (MD5 message digest algorithm) encryption ...

php tutorial generic anti-injection is mainly to filter some sql command and php post get pass over reference / we want to filter some illegal characters, so that you can prevent the basic injection, and that off the apache server installation settings method is also necessary. Administrator user name and password are taken md5 encryption, so that we can effectively prevent the injection of php. There are servers and mysql tutorials should also strengthen some security precautions. For linux server security settings: encrypted password, use "/ usr / sbin / authconf ...

The .htaccess file allows us to modify some server settings for a particular directory and its subdirectories. Although this type of configuration is best handled in the section of the server's own configuration file, sometimes we do not have permission to access this configuration file at all, especially when We are on a shared hosting host, and most shared hosting providers only allow us to change server behavior in .htaccess. .htaccess file is a simple text file, note the "." before the file name is very important, we can use your favorite text editor ...

MD5 is the most common cryptographic algorithm used in Web applications. Since the MD5 is irreversible, the ciphertext after MD5 calculation can not get the original text through the reverse algorithm. The intention of using MD5 encrypted text passwords in Web applications is to prevent the passwords stored in the database from being compromised and then being directly acquired. However, the attackers not only have a large number of password dictionaries, but also set up a lot of MD5 original/ciphertext control database, can quickly find common password MD5 ciphertext, is the efficient way to decipher MD5 ciphertext. However, the number of MD5 ciphertext ...

Databases are the basis of E-commerce, finance, and ERP systems, and often hold important business partners and customer information. Electronic data from most businesses, organizations, and government departments are kept in various databases, where they keep personal data and sensitive financial data. But databases are often not as secure as operating systems and networks. Data is the lifeblood of an organization, so it is critical to choose a secure database. I installed the MSSQL and MySQL by default with admin account on my machine to be in the same ...

MCRYPT_ECB uses the ECB to add/decrypt information. Syntax: string MCRYPT_ECB (int cipher, string key, string data, int mode);  Return value: String function kind: Encoding processing &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Content description ...

MCRYPT_CFB uses CFB to add/decrypt data. Syntax: string MCRYPT_CFB (int cipher, string key, string data, int mode, string iv); Return value: String function kind: Encoding processing &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp ...

MCRYPT_CBC use CBC to add/Decrypt data. Syntax: string MCRYPT_CBC (int cipher, string key, string data, int mode, string [IV]); Return value: String function kind: Encoding processing &http://www.aliyun.com/zixun/aggregation/37954.html ">NB ...

MCRYPT_OFB use OFB to add/decrypt data. Syntax: string mcrypt_ofb (int cipher, string key, string data, int mode, string iv); Return value: String function kind: Encoding processing content Description This function uses OFB password to retrieve this (output feedback), encrypt and decrypt the data. parameter cipher to add/decrypt method, for example ...