Authentication

Authentication

Creating an authentication algorithm

Multiple Select

In this lesson I am going to learn to ... ?

• Define 'authentication'

• Create an authentication algorithm

• Implement authentication algorithm using a 2D data structure

Multiple Select

What information is usually requested when logging in to a computer system or restricted website ?

• Username

• Password

• Full name

• Phone number

• Date of birth

Multiple Choice

What type of data structure is this?

• 2D list

• 1D list

• String

• Tuple

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Multiple Choice

This is a possible algorithm for authentication.

What format is used to represent it?

• Structured English

• Flowchart

• Pseudocode

• Program code

Multiple Choice

What should be in the ?

• User ID found?

• User password found?

• User ID and password entered?

• Valid password?

Multiple Choice

What should be in the ?

• Find user ID in data structure

• Is valid user ID?

• Get user ID

• Does password match user ID?

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Multiple Choice

What file format is most suitable for storing user credentials such as usernames and passwords?

• .csv

• .txt

• .doc

• .pdf

Multiple Choice

What process should have happened to the password data before it is stored in the data file?

• Encryption

• Compression

• Validation

• Verification

Multiple Select

What two methods are available to a programmer when accessing a persistent data file of user credentials?

• Read all the data into a data structure and then process it

• Read and process the data directly from the data file

• Read and process the data one line at a time

• Read some of the data into a data structure before processing

Multiple Choice

Which would be the most appropriate method?

Checking if a particular username has been used or not

• Read all data into data structure

• Leave data in file and process it from there

Multiple Choice

Which would be the most appropriate method?

Sorting all the usernames into alphabetical order

• Read all data into data structure

• Leave data in file and process it from there

Multiple Choice

Which would be the most appropriate method?

Allowing students to change their passwords

• Read all data into data structure

• Leave data in file and process it from there

Multiple Choice

Which would be the most appropriate method?

Checking if an entered password matches the username

• Read all data into data structure

• Leave data in file and process it from there

Multiple Choice

Which would be the most appropriate method?

Increasing the password strength of all users

• Read all data into data structure

• Leave data in file and process it from there

Multiple Select

In this lesson I have learned to ...

• Define 'authentication'

• Create an authentication flowchart

• Implement authentication using a 2D data structure

Open Ended

Thinking Hard

What is the most interesting thing you’ve learnt today?

Compare your idea with a friend.

Explain why your idea is more important ...

(press Shift+Enter to take a new line ...)

Poll

How much of this lesson have you understood?

• None of it

• Some of it

• Most of it

• All of it