[Logic_]

++ EDIT: check Andy's tut (https://sampforum.blast.hk/showthread.php?tid=597639) and mine too (https://sampforum.blast.hk/showthread.php?tid=602819)

At the top most of your script, right under the includes, put the native given below as there is no Whirlpool include but only a plugin.

PHP код:

native WP_Hash(buffer[], len, const str[]); 


Put this right under the register dialog

PHP код:

WP_Hash(PlayerInfo[playerid][Key], 129, inputtext); // hashing it!
new INI:file = INI_Open(UserPath(playerid)); //opening the file
.....
INI_WriteString(file, "Key", PlayerInfo[playerid][Key]); //write the hashed string
.....
INI_Close(file); // close the file.
..... // these naughty kids (dots) means etc stuff 


put this right under the login dialog

PHP код:

                new    hashpass[129]; // new string variable!
                WP_Hash(hashpass, sizeof(hashpass), inputtext); //hashing the inputted text
                if(!strcmp(hashpass, PlayerInfo[playerid][Password])) // if the password matches
                {
                ............... // bla bla bla your login system stuff
                }
                else
                {
                ..............// bla bla if the password is wrong
                }