How to use SHA256 hash in PHP?
The following code shows how to use the SHA256 hash in PHP: PHP offers the built-in hash() function. The first argument to the function is the name of the algorithm (you can pass algorithm names like sha256, sha512, md5, sha1, and many others). The second argument is the string to be encoded.
Table of Contents
What is the best way to encrypt a PHP password?
You should use a stronger hash function than MD5(). Ideally you should use SHA256. This hash method is available in PHP using the hash() function. You must also apply a random salt to the password. Store a different salt value for each user account. This helps defeat dictionary attacks and rainbow table attacks.
How to compare MySQL hash to PHP hash?
The least risk is getting the hash string of the password from the database in the PHP application, comparing it to the hash of the user input (also in the PHP code), and then discarding these variables. First of all, make sure you properly escape your variables before using them in the query: use mysql_real_escape_string().
How to compare database password with input?
When the first time the user enters the password, it encrypts them and stores them in the database. When the user accesses the application, it encrypts the password exactly as before and compares it to the stored encrypted password. If the password is the same and the encryption is the same, the encrypted values must match.
Is there a way to encode a password in PHP?
You must encode the login password and compare the result with the hash stored in the database. There are different algorithms to generate hash of a text. The most popular are: MD5, SHA1 and Bcrypt. Each of these algorithms are supported by PHP.
What is the built-in hash function in PHP?
PHP offers the built-in hash() function. The first argument to the function is the name of the algorithm (you can pass algorithm names like sha256, sha512, md5, sha1, and many others). The second argument is the string to be encoded. The result it returns is the hash string. Being paranoid about the security of your system is a good thing.