Binary and Logic L7 - Caesar Cipher Encryption

Posljednje ažuriranje over 1 year ago

Binary and Logic L7 - Caesar Cipher Encryption

Posljednje ažuriranje over 1 year ago

Lesson intentions To know that text can be protected using “encryption”

Success Criteria:

1: Be know that encryption turns plain text into cipher text

2: To be able to encrypt and decrypt messages

3: To be aware of disadvantages of using the caesar cipher.

Caesar Cipher: A method of "Encrypting" messages by "Shifting" the alphabet by a certain amount.

Encryption:

Turning "plain text" into "Cipher text". This makes it so that people without the "key" cannot understand it.

Decryption:

Turning "Cipher Text" into "Plain text"

Key: The method in encrypting and decrypting. Only you and the person you are sharing with should know this key.

Match the keyword to the definition

Stavka koja se može prevući		Odgovarajuća stavka
Encryption:		Shifting the alphabet by a certain key
Decryption		Turning "plain text" into "Cipher text".
Cipher text		Turning "Cipher Text" into "Plain text"
Caesar Cipher		How much you shift the alphabet by to decrypt and encrypt
Key		An encrypted message

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Encrypt the message "Bye".

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Decrypt the message "phulw"

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Hfjxfw Hnumjw
Key: 5

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Mr Chau
Key: 7

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Em apitt uizkp ib liev.
Key: 8

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Ovanel naq Ybtvp
Key: 13

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Caesar Cipher
Key: 17

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Password
Key: 17

What is a disadvantage of using the Caesar Cipher?

Create your own secret message
https://cryptii.com/pipes/caesar-cipher

Go onto
https://learncomputing.org/binary
and do some revision for converting binary to denary or vise versa
or some binary addition.
Screenshot your progress.

Binary and Logic L7 - Caesar Cipher Encryption

Binary and Logic L7 - Caesar Cipher Encryption

Match the keyword to the definition

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Encrypt the message "Bye".

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Decrypt the message "phulw"

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Hfjxfw Hnumjw
Key: 5

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Mr Chau
Key: 7

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Em apitt uizkp ib liev.
Key: 8

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Ovanel naq Ybtvp
Key: 13

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Caesar Cipher
Key: 17

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Password
Key: 17

What is a disadvantage of using the Caesar Cipher?

Create your own secret message
https://cryptii.com/pipes/caesar-cipher

Go onto
https://learncomputing.org/binary
and do some revision for converting binary to denary or vise versa
or some binary addition.
Screenshot your progress.

Match the keyword to the definition

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to ENCRYPT the letter A, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.
What does the letter A turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to ENCRYPT the letter B, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.
What does the letter B turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Encrypt the message "Hello".

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Encrypt the message "Bye".

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to DECRYPT the letter D, you look for this letter in the inner circle, then use the letter on the blue ring.
What does D decrypt to?

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to DECRYPT the letter E, you look for this letter in the inner circle, then use the letter on the blue ring.
What does D decrypt to?

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Decrypt the message "phulw"

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Hfjxfw Hnumjw
Key: 5

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Mr Chau
Key: 7

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Em apitt uizkp ib liev.
Key: 8

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Ovanel naq Ybtvp
Key: 13

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Caesar Cipher
Key: 17

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Password
Key: 17

What is a disadvantage of using the Caesar Cipher?

Create your own secret message
https://cryptii.com/pipes/caesar-cipher

Go onto
https://learncomputing.org/binary
and do some revision for converting binary to denary or vise versa
or some binary addition.
Screenshot your progress.

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to ENCRYPT the letter A, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.
What does the letter A turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to ENCRYPT the letter B, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.
What does the letter B turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Encrypt the message "Hello".

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to DECRYPT the letter D, you look for this letter in the inner circle, then use the letter on the blue ring.
What does D decrypt to?

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to DECRYPT the letter E, you look for this letter in the inner circle, then use the letter on the blue ring.
What does D decrypt to?

Binary and Logic L7 - Caesar Cipher Encryption

Binary and Logic L7 - Caesar Cipher Encryption

Match the keyword to the definition

The Image shows a Caesar Cipher wheel. It has a key of 3.You look at the outer ring then replace it with the letter in the inside ring.Encrypt the message "Bye".

The Image shows a Caesar Cipher wheel. It has a key of 3.You look at the outer ring then replace it with the letter in the inside ring.Decrypt the message "phulw"

Use the website: https://caesar-cipher.com/caesar-cipher-wheelWork out my secret message: Hfjxfw HnumjwKey: 5

Use the website: https://caesar-cipher.com/caesar-cipher-wheelEncrypt the message: Mr ChauKey: 7

Use the website: https://caesar-cipher.com/caesar-cipher-wheelWork out my secret message: Em apitt uizkp ib liev.Key: 8

Use the website: https://caesar-cipher.com/caesar-cipher-wheelWork out my secret message: Ovanel naq YbtvpKey: 13

Use the website: https://caesar-cipher.com/caesar-cipher-wheelEncrypt the message: Caesar CipherKey: 17

Use the website: https://caesar-cipher.com/caesar-cipher-wheelEncrypt the message: PasswordKey: 17

What is a disadvantage of using the Caesar Cipher?

Create your own secret messagehttps://cryptii.com/pipes/caesar-cipher

Go onto https://learncomputing.org/binaryand do some revision for converting binary to denary or vise versaor some binary addition.Screenshot your progress.

Match the keyword to the definition

The Image shows a Caesar Cipher wheel. It has a key of 3.So to ENCRYPT the letter A, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.What does the letter A turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.So to ENCRYPT the letter B, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.What does the letter B turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.You look at the outer ring then replace it with the letter in the inside ring.Encrypt the message "Hello".

The Image shows a Caesar Cipher wheel. It has a key of 3.You look at the outer ring then replace it with the letter in the inside ring.Encrypt the message "Bye".

The Image shows a Caesar Cipher wheel. It has a key of 3.So to DECRYPT the letter D, you look for this letter in the inner circle, then use the letter on the blue ring.What does D decrypt to?

The Image shows a Caesar Cipher wheel. It has a key of 3.So to DECRYPT the letter E, you look for this letter in the inner circle, then use the letter on the blue ring.What does D decrypt to?

The Image shows a Caesar Cipher wheel. It has a key of 3.You look at the outer ring then replace it with the letter in the inside ring.Decrypt the message "phulw"

Use the website: https://caesar-cipher.com/caesar-cipher-wheelWork out my secret message: Hfjxfw HnumjwKey: 5

Use the website: https://caesar-cipher.com/caesar-cipher-wheelEncrypt the message: Mr ChauKey: 7

Use the website: https://caesar-cipher.com/caesar-cipher-wheelWork out my secret message: Em apitt uizkp ib liev.Key: 8

Use the website: https://caesar-cipher.com/caesar-cipher-wheelWork out my secret message: Ovanel naq YbtvpKey: 13

Use the website: https://caesar-cipher.com/caesar-cipher-wheelEncrypt the message: Caesar CipherKey: 17

Use the website: https://caesar-cipher.com/caesar-cipher-wheelEncrypt the message: PasswordKey: 17

What is a disadvantage of using the Caesar Cipher?

Create your own secret messagehttps://cryptii.com/pipes/caesar-cipher

Go onto https://learncomputing.org/binaryand do some revision for converting binary to denary or vise versaor some binary addition.Screenshot your progress.

The Image shows a Caesar Cipher wheel. It has a key of 3.So to ENCRYPT the letter A, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.What does the letter A turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.So to ENCRYPT the letter B, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.What does the letter B turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.You look at the outer ring then replace it with the letter in the inside ring.Encrypt the message "Hello".

The Image shows a Caesar Cipher wheel. It has a key of 3.So to DECRYPT the letter D, you look for this letter in the inner circle, then use the letter on the blue ring.What does D decrypt to?

The Image shows a Caesar Cipher wheel. It has a key of 3.So to DECRYPT the letter E, you look for this letter in the inner circle, then use the letter on the blue ring.What does D decrypt to?

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Encrypt the message "Bye".

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Decrypt the message "phulw"

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Hfjxfw Hnumjw
Key: 5

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Mr Chau
Key: 7

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Em apitt uizkp ib liev.
Key: 8

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Ovanel naq Ybtvp
Key: 13

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Caesar Cipher
Key: 17

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Password
Key: 17

Create your own secret message
https://cryptii.com/pipes/caesar-cipher

Go onto
https://learncomputing.org/binary
and do some revision for converting binary to denary or vise versa
or some binary addition.
Screenshot your progress.

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to ENCRYPT the letter A, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.
What does the letter A turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to ENCRYPT the letter B, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.
What does the letter B turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Encrypt the message "Hello".

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Encrypt the message "Bye".

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to DECRYPT the letter D, you look for this letter in the inner circle, then use the letter on the blue ring.
What does D decrypt to?

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to DECRYPT the letter E, you look for this letter in the inner circle, then use the letter on the blue ring.
What does D decrypt to?

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Decrypt the message "phulw"

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Hfjxfw Hnumjw
Key: 5

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Mr Chau
Key: 7

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Em apitt uizkp ib liev.
Key: 8

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Work out my secret message: Ovanel naq Ybtvp
Key: 13

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Caesar Cipher
Key: 17

Use the website: https://caesar-cipher.com/caesar-cipher-wheel
Encrypt the message: Password
Key: 17

Create your own secret message
https://cryptii.com/pipes/caesar-cipher

Go onto
https://learncomputing.org/binary
and do some revision for converting binary to denary or vise versa
or some binary addition.
Screenshot your progress.

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to ENCRYPT the letter A, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.
What does the letter A turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to ENCRYPT the letter B, it moves 3 spaces to the right. You look at the outer ring then replace it with the letter in the inside ring.
What does the letter B turn into?

The Image shows a Caesar Cipher wheel. It has a key of 3.
You look at the outer ring then replace it with the letter in the inside ring.
Encrypt the message "Hello".

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to DECRYPT the letter D, you look for this letter in the inner circle, then use the letter on the blue ring.
What does D decrypt to?

The Image shows a Caesar Cipher wheel. It has a key of 3.
So to DECRYPT the letter E, you look for this letter in the inner circle, then use the letter on the blue ring.
What does D decrypt to?