#CodeIgniter PBKDF2 LibraryPBKDF2 PHP Class Library for CodeIgniter.
PBKDF2 (Password-Based Key Derivation Function) is a key stretching algorithm.It can be used to hash passwords in a computationally intensive manner,so that dictionary and brute-force attacks are less effective.
##HOW TO USE
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###1) Customizing the PBKDF2 (optional)
The following is a list of all the preferences you can pass to the initialization function to customize PBKDF2 encryption.
PBKDF2 uses SHA-256 by default; If the algorithm does not exist,
sha256
will be set.It is set to 1000 by default, recommended by RFC#2898.
It is set to 32 characters (128-bit) by default.
It is set to 32 characters (128-bit) by default.
####Usage:Example of Initializing the library
###2) Explanation of
Encrypt
MethodSyntax:
Usage:
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- SecondReturn:An object (stdClass) with 'salt', 'password', 'hash' propertieswhich vaule of 'hash' is concatenation of 'salt' and 'password'.
- ThirdUsing
$good_hash
which has been fetched from database to generate$password
hash while$good_hash
could be salt or hash (concatenation of salt and password).Return:An associative array with 'salt', 'password', 'hash' keyswhich vaule of 'hash' is concatenation of 'salt' and 'password'. - FourthUsing
$good_hash
which has been fetched from database to generate$password
hash while$good_hash
could be salt or hash (concatenation of salt and password).Return:An object (stdClass) with 'salt', 'password', 'hash' propertieswhich vaule of 'hash' is concatenation of 'salt' and 'password'.
salt
and password
indexes/properties are 128-bit|16-byte|32-char hash value by default. so hash
would be double (256-bit).###3) Register user
####Step 1:
Load
pbkdf2
library into your controller:####Step 2:
Encrypt user's password sent from login.
Register user by using
$pbkdf2['password']
as user's password and storing $pbkdf2['salt']
in seperate column for lateral usingOR
Register user by using
$pbkdf2['hash']
as user's password which has been recommended; no need to store user's salt
seperately.NOTE: Usernames MUST be unique. be ensured that users aren't able to choose duplicate usernames. make some restrictions on registering users.
###4) Logging in user
####Step 1:
Load
pbkdf2
library into your controller:####Step 2:
Fetch user's password using posted username.
Assuming a model named
user.php
exists, which returns an associative array contains user's password
and whatever-you-need from database using posted username
.NOTE: Usernames MUST be unique. be ensured that users aren't able to choose duplicate usernames. make some strictions on registering users.
####Step 3:
Check if the given password is exactly equal to password stored in database.
What Is An Hmac
In the example below, it is assumed that concatenation of
salt
and password
which called hash
is used as user's password. the encrypt method select the salt
automatically.NOTE: If you want to store
salt
in database separately, you MUST pass the salt
as second parameter to encrypt method.Generate Codeigniter 3 Hmac Key West
License
CodeIgniter PBKDF2 Library was created by Hashem Qolami and released under the MIT License, based on RFC#2898.
Any suggestions are welcome. create an issue if you have any problems/ideas.
Any suggestions are welcome. create an issue if you have any problems/ideas.
![Code Code](/uploads/1/2/5/7/125716790/996018369.png)
Generate Codeigniter 3 Hmac Key Number
Thanks,
-Hashem Qolami <[email protected]>
-Hashem Qolami <[email protected]>