How do I create and store md5 passwords in mysql

Question

Probably a very newbie question but  Ive been reading around and have found some difficulty in understanding the creation and storage of passwords  From what i ve read md5 hash passwords are the best ways to store them in a database  However  how would I go about creating those passwords in the first place   So say I have a login page with user bob  and password bob123  - how will I  1  get bobs password into the database to begin with  hashed  2  how do I retrive and confirm the hashed password   Thanks

User · Answer

PHP has a method called md5  -  Just  password   md5  passToEncrypt    If you are searching in a SQL u can use a MySQL Method MD5   too       SELECT   FROM user WHERE Password    md5  password       or      SELECT   FROM ser WHERE Password MD5     password      To insert it u can do it the same way

User · Answer

Why don t you use the MySQL built in password hasher   http   dev mysql com doc refman 5 1 en password-hashing html  mysql gt  SELECT PASSWORD  mypass     -------------------------------------------    PASSWORD  mypass                             -------------------------------------------     6C8989366EAF75BB670AD8EA7A7FC1176A95CEF4    -------------------------------------------    for comparison you could something like this   select id from PassworTable where Userid   lt userid gt   and Password PASSWORD   lt password gt      and if it returns a value then the user  is correct

User · Answer

you have to reason in terms of hased password   store the password as md5  bob123    when bob is register to your app   query    INSERT INTO users  username password  VALUES  bob     md5  bob123          then  when bob is logging-in    query    SELECT   FROM users WHERE username    bob  AND password      md5  bob123         obvioulsy use variables for username and password  these queries are generated by php and then you can execute them on mysql

User · Answer

Insertion   INSERT INTO     VALUES   bob   MD5  bobspassword       retrieval   SELECT     FROM     WHERE     AND password md5  hopefullybobspassword      is how d you d do it directly in the queries  However  if your MySQL has query logging enabled  then the passwords  plaintext will get written out to this log  So    you d want to do the MD5 conversion in your script  and then insert that resulting hash into the query

User · Answer

just get the hash by following line and store it into the database    encryptedValue   md5  YOUR STRING

User · Answer

Please don t use MD5 for password hashing  Such passwords can be cracked in milliseconds   You re sure to be pwned by cybercriminals   PHP offers a high-quality and future proof password hashing subsystem based on a reliable random salt and multiple rounds of Rijndael   AES encryption    When a user first provides a password you can hash it like this     pass    whatever the user typed in     hashed password   password hash   secret pass phrase   PASSWORD DEFAULT      Then  store  hashed password in a varchar 255  column in MySQL   Later  when the user wants to log in  you can retrieve the hashed password from MySQL and compare it to the password the user offered to log in     pass    whatever the user typed in     hashed password    what you retrieved from MySQL for this user    if   password verify    pass    hashed password             future proof the password        if   password needs rehash  hashed password   PASSWORD DEFAULT               recreate the hash            rehashed password   password hash  pass  PASSWORD DEFAULT              store the rehashed password in MySQL                   password verified  let the user in        else           password not verified  tell the intruder to get lost         How does this future-proofing work   Future releases of PHP will adapt to match faster and easier to crack encryption  If it s necessary to rehash passwords to make them harder to crack  the future implementation of the  password needs rehash   function will detect that   Don t reinvent the flat tire  Use professionally designed and vetted open source code for security

User · Answer

I m not amazing at PHP  but I think this is what you do    password   md5  password   and  password would be the   POST  password   or whatever

User · Answer

To increase security even more  You can have md5 encryption along with two different salt strings  one static salt defined in php file and then one more randomly generated unique salt for each password record   Here is how you can generate salt  md5 string and store        unique salt string   hash  md5   microtime           password   hash  md5     POST  password    static salt   unique salt string        query    INSERT INTO users  username password salt  VALUES  bob      password         unique salt string        Now you have a static salt  which is valid for all your passwords  that is stored in the  php file  Then  at registration execution  you generate a unique hash for that specific password   This all ends up with  two passwords that are spelled exactly the same  will have two different hashes  The unique hash is stored in the database along with the current id  If someone grab the database  they will have every single unique salt for every specific password  But what they don t have is your static salt  which make things a lot harder for every  hacker  out there   This is how you check the validity of your password on login php for example         user     username input        db query   mysql query  SELECT salt FROM users WHERE username   user          while  salt   mysql fetch array  db query                  password   hash  md5    POST  userpassword    static salt   salt salt        This method is very powerful and secure  If you want to use sha512 encryption  just to put that inside the hash function instead of md5 in above code

User · Answer

Edit 2017 11 09  Be sure to take a look at the answer from O Jones   First off MD5 isn t the greatest hashing method you could use for this try sha256 or sha512  That said lets use hash  sha256   instead of md5   to represent the hashing part of the process   When you first create a username and password you will hash the raw password with some salt  some random extra characters added to each password to make them longer stronger    Might look something like this coming in from the create user form    escapedName   mysql real escape string   POST  name       use whatever escaping function your db requires this is very important   escapedPW   mysql real escape string   POST  password        generate a random salt to use for this account  salt   bin2hex mcrypt create iv 32  MCRYPT DEV URANDOM      saltedPW     escapedPW    salt    hashedPW   hash  sha256    saltedPW     query    insert into user  name  password  salt  values    escapedName     hashedPW     salt         Then on login it ll look something like this    escapedName   mysql real escape string   POST  name      escapedPW   mysql real escape string   POST  password       saltQuery    select salt from user where name     escapedName      result   mysql query  saltQuery     you ll want some error handling in production code      see http   php net manual en function mysql-query php Example  2 for the general error handling template  row   mysql fetch assoc  result    salt    row  salt      saltedPW     escapedPW    salt    hashedPW   hash  sha256    saltedPW     query    select   from user where name     escapedName  and password     hashedPW         if nonzero query return then successful login

[php] How do I create and store md5 passwords in mysql

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