Question

In: Computer Science

Create a web form that will accept a string as a password and determine the strength...

Create a web form that will accept a string as a password and determine the strength of that password. The strength of a password is determined by the characters making up the password. These characters are divided into three categories:

USING PHP

The uppercase characters, which are A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z The lowercase characters, which are a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z
The special characters which are ~!@#$%^&*()_?+><

The strength of the password can be:

  • INVALID : if the string is less than 8 characters long or has invalid characters

  • POOR: if the string contains only one set of the above characters in it

  • MEDIUM: if the string contains only two sets of the above characters in it

  • GOOD: if the string contains all three sets of the above characters.

    T

  • Strength Message should display “INVALID”, “POOR”,”MEDIUM” or “GOOD”.

    For “INVALID”, “POOR” or ”MEDIUM” strengths give the reason(s) why. The Reason

is less than 8 characters”,
does not contain uppercase characters”
does not contain lowercase characters”
does not contain special characters”
does not contain uppercase or lowercase characters” does not contain uppercase or special characters” does not contain lowercase or special characters” contains uppercase, lowercase and special characters” contains invalid characters”

  • “Password

  • “Password

  • “Password

  • “Password

  • “Password

  • “Password

  • “Password

Message can be:

“Password

“Password

Solutions

Expert Solution

HTML page :

<html>
<body>

<form action="validate_password.php" method="post">
Password: <input type="password" name="password">
<input type="submit">
</form>

</body>
</html>

PHP code (validate_password.php):

<?php

$password = $_POST["password"]
$uppercase = preg_match('@[A-Z]@', $password);
$lowercase = preg_match('@[a-z]@', $password);
$special_chars = preg_match('/[^a-zA-Zd]/', $password);

$length = strlen($password);
if ($length < 8)
{
   echo "INVALID. Reason is less than 8 characters";
}
elseif ($uppercase && $lowercase && $special_chars)
{
    echo "GOOD";
}
elseif ($uppercase && $lowercase)
{
    echo "MEDIUM. Reason is does not contain special characters";
}
elseif ($uppercase && $special_chars)
{
    echo "MEDIUM. Reason is does not contain lowercase characters";
}
elseif ($lowercase && $special_chars)
{
    echo "MEDIUM. Reason is does not contain uppercase characters";
}
elseif (!$uppercase && !$special_chars)
{
    echo "POOR. Reason is does not contain uppercase and special characters";
}

elseif (!$uppercase && !$lowercase)
{

    echo "POOR. Reason is does not contain uppercase and lowercase characters";
}

elseif (!$lowercase && !$special_chars)
{
    echo "POOR.   Reason is does not contain lowercase and special characters";
}

else{

    echo "GOOD";

}

?>

PLEASE THUMBS UP!!!!!

venereology answered 8 months ago
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