How to decrypt Hash Password in Laravel
Stefan Izdrail
Founder & Senior Architect · 2026-06-29
Title: Decrypting Hashed Passwords in Laravel: A Comprehensive Guide
Introduction
Decrypting hashed passwords can be a complex task for developers. However, it is crucial to understand the process if you are working with sensitive data like user credentials. In this blog post, we will discuss how to decrypt hash passwords in Laravel and provide useful tips and best practices to ensure proper security measures are taken.
The Code Sample Explained
Firstly, let's review your code snippet:
```php
$results = DB::select("select * from dockl_users where email='" . Input::get('email') ."';");
foreach($results as $data){
$password= $data->password;
$email= $data->email;
}
Mail::send('passwordRecovery', array('email' =>$password), function($message)
{
$message->to(Input::get('email'))->subject('Password Recovery');
});
```
In this code, you are retrieving a user with the given email from your database using the query. You then send an email to the user containing their email address and what appears to be their password—in fact, it is an encrypted version of their real password, stored as a hash. Upon closer inspection, we notice that you attempt to decrypt the retrieved "password" using Laravel's encryption methods:
```php
$decrypt = Crypt::decrypt($data->password);
```
Unfortunately, this doesn't work and throws an error as it is trying to decrypt hashed passwords that were initially encrypted with a different algorithm. The error message—"Invalid data" and the `DecryptException`—indicates that the data being decrypted does not match its original format.
Proper Way to Decrypt Hashed Passwords in Laravel
To securely decrypt hashed passwords, you should follow these steps:
1. Store users' passwords as hashes, which are encrypted with a salted one-way algorithm like Bcrypt or Argon2. These algorithms make it computationally infeasible to reverse the encryption process and reveal the original plaintext.
2. If you must send the user their data by email for any reason, consider sending their username or a random token instead of their password. This will not compromise their security since anyone who wants to misuse such information would need to log in with the correct credentials anyway. Refer to our blog post about [resetting passwords](https://laravelcompany.com/blog/password-reset-using-email-confirmation) using tokens for a better understanding.
3. If you are absolutely determined to send hashed passwords, use Laravel's encryption methods only with plaintext data that requires encryption and not the password hash. Remember, encryption is a different process than hashing, and they serve different purposes.
Conclusion
In summary, decrypting hashed passwords in Laravel is not possible since these passwords are one-way encrypted using secure algorithms like Bcrypt or Argon2. Instead, you should focus on securing your application and user data in other ways, such as token-based authentication for resetting passwords. This ensures a higher level of security and protects sensitive information from being compromised.