Php Encrypt Password Example

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 ...

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 ...

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_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 ...

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 ...

Use MySQL, security issues can not fail to pay attention. Here are 23 things to note about MySQL prompts: 1. If the client-server connection needs to cross and pass an untrusted network, then you need to use an SSH tunnel to encrypt the connection's traffic. 2. Set password statement to modify the user's password, three steps, first "mysql-u root" landing database system, and then "mysql> update mysql.user set password = pas ...

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Use MySQL, security issues can not fail to pay attention. The following are 23 tips for MySQL tips: 1. If the client-server connection needs to cross and pass an untrusted network, then you need to use an SSH tunnel to encrypt the connection's traffic. 2. Set password statement to modify the user's password, three steps, first "mysql-u root" landing database system, and then "mysql> update mysql.user set password = passwor ...