I have some different requirement, i don't want to decode the password, but i am building some other app based on SAME DATABASE for LOGIN so what i can do to "encrypt the password value so that it matches the backend password encrypted code".
I want to provide LOGIN from CODEIGNITOR app where data base is created by admin app in LARAVEL ... this is the issue...
So through CodeIgnitor if someone is LOGIN the password will be encrypted equivalent hash encrypted laravel application code.
The Encrypted Password is
$2y$10$cwd15HRgON0ytqkkV5F9zupfUOkqaii7fpbB9Kjd9I7W46LRYY0Km
And the real PASSWOORD is
123456
Please help...
Caddy DZ's answer is right, but to better answer your question you should know that every time you generate a new password with bcrypt function, a new random salt is used.
This leads you to end up getting a different hash for the same password each time you generate one.
The only way you have to verify the correctness of the password, is to use a built-in php function called password_verify.
That function will hash your password (that you provide as a second argument) with the same salt that has been used to generate the stored password (the salt to use is stored in the password hash) you already have in the database:
$password = '123456';
$saved = 'your stored hash';
if (password_verify($password, $saved)) {
echo 'Correct password.';
}
You can check the documentation about password_verify
This is not standard encryption that can be decrypted, this is hashing which is only one (1) way encryption..
To make this work in, you need to use the same hashing algorithm between the two apps (Laravel and CodeIgniter)
For instance laravel uses bcrypt by default to hash the password, so you need to configure CodeIgniter to use the same or vice versa.
bcrypt for codeigniter
Related
There is no option to convert hashed text back to plain text. Thats the reason why we use that method to store password - only the author of a password can know the real value - nobody else (developers and someone who can stole passwords). The popular method used to break hashed password is called "brute force attack" and is based on comparing already known hashed values of popular passwords to existing ones in database.
Now i need to show current password when user change password. but hash password cant not return back.
how to solve this issue?
convert hashed password to normal password?
Encryption is a two-way function; what is encrypted can be decrypted with the proper key.
Hashing is a one-way function that scrambles plain text to produce a unique message digest. With a properly designed algorithm, there is no way to reverse the hashing process to reveal the original password.
Now i need to show current password when user change password. but hash password cant not return back. how to solve this issue?
You do not need to show the password to anyone, including the owner of the password.
If you want to check, you can use check method, allows you to verify that a given plain-text string corresponds to a given hash.
if (Hash::check('plain-text', $hashedPassword)) {
// The passwords match...
}
I have question if you want:
- Why password hash bcrypt in laravel is random unlike sha1?
I test password 12345678in bcrypt and the result are different or with sha1 the same result.
So, how the system recognize password bcrypt in login app?
Thank you
That's just how bcrypt() and Hash::make work. Every time you run the method, you get a different string.
To check if password is correct, Laravel uses Hash::check() method:
Hash::check($passord, $hashedPassword)
Verifying A Password Against A Hash
The check method allows you to verify that a given plain-text string corresponds to a given hash.
Under the hood this method uses password_verify PHP function.
https://laravel.com/docs/5.5/hashing#basic-usage
I have a slight problem after upgrading to laravel 5.4
When i do a password reset, the email gets generated and sent perfectly, however the token it saves to the user record in the database is as follows:
$2y$10$N0WFuqEkEIFto.CazxYLdOUmY1X9tBHfvDn8iWKUdlq2W9uOc00Ku
But the token it sends to the user to do a password reset is:
bc1c82830bc8ad1356aa5e2a2a5a342ae6c6fabd385add503795cca1a1993e15
My question is why are the two tokens different. and how do i perform a check now to validate if the token exists in the database as i need to get the email address to post to the reset controller.
Thanx in advance.
Token you store in database is hashed same as your password column in users table.
However the token you recieve is not hashed. Thats why they are different
Due to get this password ;
$2y$10$N0WFuqEkEIFto.CazxYLdOUmY1X9tBHfvDn8iWKUdlq2W9uOc00Ku
you have to do
Hash::make('bc1c82830bc8ad1356aa5e2a2a5a342ae6c6fabd385add503795cca1a1993e15');
And you cannot revert this process backwards.
The token in the database is encrypted with Bcrypt. That's why it is different in the database.
The token will still work when you use it.
The token it stores in the database is the same string, but hashed with bcrypt, a secure and adaptive algorithm based on the Blowfish cipher.
You can see the documentation for the vanilla PHP password_hash() function to see how it's built, and the password_verify() function to verify that the hashed string is valid against an unhashed version of it (what is sent to the user, in this case).
Laravel Hashing
Laravel includes its own hashing objects and facades which are documented.
To create a hash:
$string = 'Hello world.';
$hash = Hash::make($string);
To verify the hash against a plain string:
if (Hash::check($string, $hash)) {
// The passwords match...
}
Note: In Laravel 5.4, the email token changed from SHA256 to bcrypt in an undocumented change (as issue #18570 shows), so bear that in mind if you are upgrading from Laravel 5.3 or lower.
I want to add a number of test user accounts and it's a lot faster to do it directly from the Database.
There are a couple of fields that I cannot figure out:
secret_token: How do I generate this on the fly? Is it necessary? Can I copy it from other accounts?
password: Even though I have created some accounts the normal way (register page), with the same password, the password fields are different for each user. Therefore I assume it's not a simple copy/paste case (question also applies to changing a user's password from the DB).
Any insight appreciated, thank you.
secret_token is an md5 hash, and is created by the User::generateActivationToken() method. It is used for special account activities like email verification, password reset, and password creation for new accounts.
password is a 60-character salted hash generated by password_hash using the bcrypt function. Since the salt is randomly generated each time a password is created, it will be different from user to user, even if their plaintext passwords are exactly the same. Indeed, this is the purpose of using a salt.
If you are just setting up test accounts for development purposes, you can leave secret_token empty and use password_hash to generate passwords (perhaps by running a custom PHP script from the command line).
If you need to generate accounts in bulk for real users, you may want to set a secret_token but leave the password empty, generate a "password reset" event for each user, and then send them a password creation email so they can choose their own passwords. This is in fact what is done in the createUser controller method:
$data['password'] = "";
...
$user = new User($data);
...
$user->newEventPasswordReset();
You can see the code for newEventPasswordReset here.
I use the mentions software stack above and I need to encrypt password before save into database. I also need to decrypt password because when someone will change password he she needs to give in the old password and then the new onw twice and I need to check the old password.
I have searched a lot but I still not sure what is the right way to do this.
I have found this link Encrypting but are there other hints to do this?
I also not sure if maybe MongoDB provides something to protect passwords.
First read Steven Carlson´s answer about password hashing.
The good thing is that Spring Security will do this for you. Spring Security 3.2 introduced the new org.springframework.security.crypto.password.PasswordEncoder interface and some implementations: BCryptPasswordEncoder, StandardPasswordEncoder (and NoOpPasswordEncoder).
Important: Do not confuse org.springframework.security.crypto.password.PasswordEncoder with the old deprecated org.springframework.security.authentication.encoding.PasswordEncoder
The interface (and therefore the implementations) has the two methods you need:
public String encode(CharSequence rawPassword)
public boolean matches(CharSequence rawPassword, String encodedPassword)
I recommend to use org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder.
The BCryptPasswordEncoder (in contrast to the StandardPasswordEncoder) use an salt that is different for each password (but not global like the one from StandardPasswordEncoder). When you encode a raw password (public String encode(CharSequence rawPassword)) then the returned encoded password is not just the encoded password, it also contains some meta information about the used hash-algorithm, the used salt and of course the encoded password.
You should not be "encrypting" the password at all. I know this sounds counter-intuitive. But there is zero reason your system should need to decrypt the password. To do so would open your database to a hacker, because if you store your decryption password in your codes/server a hacker can steal that information.
The correct process is to hash the password. A hash is a one-way (cannot be decypted back to the original text) process. The current standard would be to use SHA256 to hash your password. Here is a basic flow-chart:
Take user submitted password. Example password "mypass" would hash out to ea71c25a7a602246b4c39824b855678894a96f43bb9b71319c39700a1e045222
Store this hash (ea71c25a7a602246b4c39824b855678894a96f43bb9b71319c39700a1e045222) in your database.
When a user logs in you take the password he just submitted and hash it. If he enters the same password it will hash out to the same value in your database.
When a user goes to change passwords you hash the "enter your old password" to verify the old password still matches, if it does you hash the "enter your new password" and save it.
One thing I did not mention in my example is salt. This is something you must use in your system as it protects your data from rainbow table exploits. But that is for another discussion.
Hope this helps :)