Passphrase

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. Which is a passphrase?

A Purple1

B purple-tractor-melon-sky

2. What makes a passphrase strong?

A It is short and uses one common word

B It is long and uses several unrelated words

3. Which words make the best passphrase?

A Random words that do not belong together

B Words from your name and birthday

4. How can you make a passphrase even stronger?

A Add numbers or symbols

B Make it shorter

5. A passphrase can be built from a memorable sentence. Which is a true example?

A The sentence 'My cat eats 3 green apples' becomes Mycat3greenapples

B The sentence 'My cat eats 3 green apples' becomes 123

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1purple-Teapot-runs-87		AA passphrase built from a memorable sentence, using the first letters or words plus numbers and a symbol
2Myd0gEats2Pies!		BA passphrase that combines random, unrelated words and adds numbers and a symbol to make it stronger
3A passphrase is made by combining several random, unrelated words		CThis is not a passphrase. It is a short password using a name and a year, which is easy to guess. Use several unrelated words instead.
4You can make a passphrase stronger by adding numbers or symbols		DThe words are related and form a personal sentence that is easy to guess. Use unrelated words instead, such as from your own memorable sentence.
5Sam2012		Ecloud-banana-rocket-pencil
6my-name-is-sam-and-i-like-cats		Ffrog-lamp-ocean-42!

Definitions

passphrase

Fill in the Blanks

Complete each line of code by filling in the missing parts.

__________ = "purple-tiger-cloud-boat"

passphrase = word1 _ word2 + word3

words = "blue-frog-tree" passphrase = words + ______ + symbol

sentence = "My dog likes red apples" passphrase = sentence._______(" ", "-")

passphrase = "purple-tiger-cloud-boat" if len(passphrase) __ 16: print("Long and strong")

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A words = ["frog","lamp","tea"]

B passphrase = "".join(words)

C passphrase += "42"

D print(passphrase2)

Question 2

A sentence = "I eat 3 red pies"

B letters = ""

C for w in sentence.split()

D letters += w[0]

E print(letters)

Question 3

A import random

B words = ["moon","tree","bus"

C pick = random.sample(words,3)

D passphrase = "-".join(pick)

E print(passphrase)

Question 4

A passphrase == "pig-rain-kite"

B if len(passphrase) >= 12:

C print("Long enough")

D else:

E print("Add more words")

Question 5

A words = ["pen","sky","fox"]

B passphrase = " ".join(words)

C passphrase = passphrase + 7

D print(passphrase)

Answer Key

Passphrase

Section A: Quick Questions

B — purple-tractor-melon-sky

B — It is long and uses several unrelated words

A — Random words that do not belong together

A — Add numbers or symbols

A — The sentence 'My cat eats 3 green apples' becomes Mycat3greenapples

Section B: Match the Pairs

purple-Teapot-runs-87 → A passphrase that combines random, unrelated words and adds numbers and a symbol to make it stronger

Myd0gEats2Pies! → A passphrase built from a memorable sentence, using the first letters or words plus numbers and a symbol

A passphrase is made by combining several random, unrelated words → cloud-banana-rocket-pencil

You can make a passphrase stronger by adding numbers or symbols → frog-lamp-ocean-42!

Sam2012 → This is not a passphrase. It is a short password using a name and a year, which is easy to guess. Use several unrelated words instead.

my-name-is-sam-and-i-like-cats → The words are related and form a personal sentence that is easy to guess. Use unrelated words instead, such as from your own memorable sentence.

Section C: Definitions

passphrase — A password made of several unrelated words that is long but easy to remember. You can add numbers or symbols to make it stronger.

Section D: Fill in the Blanks

passphrase = "purple-tiger-cloud-boat"

passphrase = word1 + word2 + word3

words = "blue-frog-tree"
passphrase = words + number + symbol

sentence = "My dog likes red apples"
passphrase = sentence.replace(" ", "-")

passphrase = "purple-tiger-cloud-boat"
if len(passphrase) >= 16:
    print("Long and strong")

Section E: Spot the Error

D — The variable holding the passphrase is called passphrase, not passphrase2. Python would give a NameError. It should be print(passphrase).

C — A for loop line must end with a colon. It should be for w in sentence.split():

B — The list of random words is missing its closing square bracket. It should end with ].

A — A single = stores the passphrase in a variable. == only compares values, so passphrase would not exist. It should be passphrase = "pig-rain-kite".

C — Numbers and symbols added to a passphrase must be text. 7 is not in quotes, so Python cannot add it to a string. It should be + "7!" or + "7".