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Q.3.4 Using a flow diagram, demonstrate how input validation of usernames/passwords should be performed using the positive security model.

Q.3.4 Using a flow diagram, demonstrate how input validation of usernames/passwords should be performed using the positive security model.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Q.3.4 Using a flow diagram, demonstrate how input validation of usernames/passwords should be performed using the positive security model. (8)
Transcribed Image Text:Q.3.4 Using a flow diagram, demonstrate how input validation of usernames/passwords should be performed using the positive security model. (8)
Expert Solution
Step 1

Validation of username/password

<!doctype html>

<html>

<body>

<form>

<font size=5><font color="black"><input type="text" placeholder="Username" name="text1"><br /><br /></font>

<font size=5><font color="white"><input type="password" placeholder="Password" name="text2"><br /><br /></font>

<font size=5><input type="submit" value="Login" onclick=javascript.validate(test1.value,test2.value)></font>

</form>

<! javascript>

<script language="javascript">

function validate(text1,text2)

{

if(text1==workshop && text2==workshop)

load("run.html");

else

{

load("fail.html");

}

}

function load(url)

{

location href=url;

}

</script>

</body>

</html>

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