Encryption crossword: crossword puzzle for Grade 11, page 1 preview

Crossword puzzle · Computers & Digital Literacy

Encryption crossword · Grade 11

Solve a crossword of up to 13 words about encryption from short definition clues, with a word bank to help. Builds vocabulary, spelling and reading for meaning.

Grade 11 · ages 16 to 17
Easy
20 to 30 minutes
1 page
Free

The answer key is a separate page for grown-ups. Sign in to download it.

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The crossword clues

Directions: Read each clue and pick the answer from the word bank. Write one letter in each box.

Word bank
BRUTE FORCE · CAESAR · CERTIFICATE · CIPHERTEXT · DECRYPT · END-TO-END · HASH
HTTPS · PLAINTEXT · PRIVATE KEY · SALT · SIGNATURE · SYMMETRIC
Across
3 One-way fingerprint of data that cannot be reversed (4)
6 Turn scrambled data back into readable form (7)
7 Random extra data mixed into each password before storing it (4)
9 A readable message before it is scrambled (9)
10 Digital ID that proves a website is who it claims to be (11)
12 Encryption where only the two people talking can read the messages (3, 2, 3)
13 Kept secret; the only thing that can unlock what was locked for you (7, 3)
Down
1 Ancient shift cipher named after a Roman general (6)
2 Trying every possible key until one works (5, 5)
4 Encryption where the same secret both locks and unlocks (9)
5 Mathematical proof that a message came from its sender unchanged (9)
8 Scrambled message that looks like nonsense (10)
11 Secure version of the web protocol; look for it in the address (5)

What your child practices

Your child builds vocabulary, spelling and reading for meaning. The skill is “Safety, privacy and security”: protect personal information, recognize threats and make responsible choices online.

Grades and ages: Grade 11, ages 16 to 17
Time: About 20 to 30 minutes
Subject: Computers & Digital Literacy
Level: Easy for Grade 11
Answer key: Yes, for grown-ups who sign in
Printing: 1 page, US Letter or A4, low-ink option
Updated: October 15, 2026

How to use it

Read the first across clue together so the format is clear. Use a pencil so mistakes rub out easily, and check every answer at the end. It is one of the easier sheets for Grade 11, good as a warm-up or a first look at the skill.

An answer key comes with it as a separate page that grown-ups download after signing in.

Tip for grown-ups: Use the letter count after each clue and any crossing letters when a clue gets stuck.

Done on paper? A grown-up can record it on the child's page in PlayOwl; downloading alone doesn't count as finished.