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Hello Friends Today, through this tutorial, I will tell you How to creates a one-way string hashing for password storage and security php With Example? To create one-way string hashing for password storage and security in PHP, you typically use a combination of functions like `password_hash()` and `password_verify()`. Here’s how you can do it:
1. Hashing the Password:
You use the `password_hash()` function to hash the password. This function automatically generates a strong salt and chooses the appropriate hashing algorithm based on the provided options.
2. Verifying the Password:
When a user attempts to log in, you use the `password_verify()` function to check if the entered password matches the hashed password stored in your database.
Here’s a basic example:
<?php
// User's password to be hashed
$password = 'user_password';
// Hash the password
$hashedPassword = password_hash($password, PASSWORD_DEFAULT);
// Print or store $hashedPassword in the database
// Now, let's simulate a login attempt with a password entered by the user
$enteredPassword = 'user_password';
// Check if the entered password matches the hashed password
if (password_verify($enteredPassword, $hashedPassword)) {
echo "Password is correct. You are logged in.";
} else {
echo "Incorrect password. Please try again.";
}
?>
In this example:
1. We first hash the user’s password using `password_hash()`.
2. The hashed password is then stored in the database or printed out.
3. During a login attempt, we compare the entered password with the hashed password retrieved from the database using `password_verify()`.
This approach ensures secure password storage because:
1. It automatically generates and manages a secure salt for each password.
2. It uses a strong hashing algorithm (determined by `PASSWORD_DEFAULT`, which is currently bcrypt).
3. It provides a convenient way to verify passwords securely without needing to manage the salt or hashing algorithm manually.